Journal of energy storage最新文献

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Understanding the voltage inconsistency features in lithium-ion battery module
IF 8.9 2区 工程技术
Journal of energy storage Pub Date : 2025-02-27 DOI: 10.1016/j.est.2025.116007
Bin Gou , Yanyun He , Peifeng Huang , Wei Zhang , Yuezhi Zhang , Zhonghao Bai
{"title":"Understanding the voltage inconsistency features in lithium-ion battery module","authors":"Bin Gou ,&nbsp;Yanyun He ,&nbsp;Peifeng Huang ,&nbsp;Wei Zhang ,&nbsp;Yuezhi Zhang ,&nbsp;Zhonghao Bai","doi":"10.1016/j.est.2025.116007","DOIUrl":"10.1016/j.est.2025.116007","url":null,"abstract":"<div><div>Abusive behaviors can induce voltage inconsistency due to their influence on the basic properties of battery cells. The extraction and identification of voltage inconsistency characteristics serve as vital methods for conducting safety risk assessments and early warnings of batteries. However, the inconsistency features caused by variations in cell's basic properties and various abusive behaviors remain unclear. To address this, a series of battery module cycling tests were conducted to comprehensively analyze inconsistency features and quantify these features using mean normalization (MN) and coefficient of consistency variation methods. Some inconsistency features such as “V-type” and “Λ-type” features, sharp fall feature, and continuous increase of deviation feature, that caused by the variation of initial SOC, capacity, and resistance were captured and quantitatively analyzed. Moreover, the inconsistency features of mechanical deformation, overcharge, over-discharge and low-temperature operation were investigated. “V-type” feature and sharp fall of MN value feature can be found in mechanical deformation, overcharge, and low-temperature operation at 0.5C-rate. For the cell with 6.8 mm indentation depth, the ISC induced continuous increase of low voltage deviation with cycling was also characterized. For low-temperature operation at high C-rates, the “V-type” feature vanished but the sharp fall feature aggravated. These results provide insight into understanding voltage inconsistency features and highlight new directions for safety risk assessment.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"115 ","pages":"Article 116007"},"PeriodicalIF":8.9,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143508791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The impact of orientation and scale of kite-shaped anisotropic metal foam layers on paraffin-based latent heat thermal energy storage units
IF 8.9 2区 工程技术
Journal of energy storage Pub Date : 2025-02-27 DOI: 10.1016/j.est.2025.115989
Hakim S. Sultan Aljibori , Ahmad Hajjar , Zehba Raizah , Faisal Alresheedi , Ali Akremi , Ahmed Elhassanein , Mohammad Ghalambaz
{"title":"The impact of orientation and scale of kite-shaped anisotropic metal foam layers on paraffin-based latent heat thermal energy storage units","authors":"Hakim S. Sultan Aljibori ,&nbsp;Ahmad Hajjar ,&nbsp;Zehba Raizah ,&nbsp;Faisal Alresheedi ,&nbsp;Ali Akremi ,&nbsp;Ahmed Elhassanein ,&nbsp;Mohammad Ghalambaz","doi":"10.1016/j.est.2025.115989","DOIUrl":"10.1016/j.est.2025.115989","url":null,"abstract":"<div><div>The impact of using kite-shaped anisotropic metal foam layer (AMFL) on melting heat transfer of a channel shape latent heat thermal energy storage (LHTES) unit was investigated to optimize heat transfer and conserve energy efficiently. The system employs water channels to transfer heat into a paraffin wax phase change material (PCM) via copper conduits, strategically capturing and storing surplus thermal energy. Housed within a closed 15 cm × 15 cm compartment with selective heating on one side and adiabatic boundaries elsewhere, the LHTES system integrates uniform metal foam alongside AMFL configurations varying from 25 % to 75 % of the unit's volume. The Darcy-Brinkman-Forchheimer model further elucidates fluid flow through porous media, to take into account the liquid PCM flow. Mathematical modeling utilizes finite element method solutions to simulate PCM phase change and fluid dynamics within the metal foam structure, governed by partial differential equations encompassing mass, momentum, and energy conservation principles. The optimal energy storage rate is achieved by placing the thick base of the kite-shaped AMFL at the bottom, near the hot wall. Covering 25 % and 75 % of the enclosure with an AMFL resulted in a 2.2 % and 5.6 % change in the melting rate, respectively.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"115 ","pages":"Article 115989"},"PeriodicalIF":8.9,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143512535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
High-performance thermal storage materials using wastepaper aerogels for green building applications
IF 8.9 2区 工程技术
Journal of energy storage Pub Date : 2025-02-27 DOI: 10.1016/j.est.2025.115986
Jun Li , Yingbiao Yuan , Yingfen Zeng , Dehao Li , Lihang Yang , Guiyue Wang , Haidong Ju , Mingfeng Chen , Renjie Chen
{"title":"High-performance thermal storage materials using wastepaper aerogels for green building applications","authors":"Jun Li ,&nbsp;Yingbiao Yuan ,&nbsp;Yingfen Zeng ,&nbsp;Dehao Li ,&nbsp;Lihang Yang ,&nbsp;Guiyue Wang ,&nbsp;Haidong Ju ,&nbsp;Mingfeng Chen ,&nbsp;Renjie Chen","doi":"10.1016/j.est.2025.115986","DOIUrl":"10.1016/j.est.2025.115986","url":null,"abstract":"<div><div>Aerogel-based phase change composites offer significant potential for reducing building energy consumption. However, challenges such as high costs, solvent dependency, and limited functionality have hindered their widespread adoption. This study addresses these challenges by repurposing untreated waste cardboard to create oriented aerogels through a solvent-free directional freeze-casting technique. The aerogel's hierarchical porosity facilitates the efficient encapsulation of n-eicosane with 87.48 % loading. This is followed by sealing the composite with polydimethylsiloxane to create a shape-stabilized composite with a latent heat of 188.64 J/g. Unlike previous approaches that rely on chemical cellulose extraction, our method retains raw wastepaper fibers, significantly reducing production costs to $0.106/g. The composite demonstrates exceptional thermal stability, with less than 2.1 % enthalpy loss after 200 thermal cycles, and effectively prevents PCM leakage even when exposed to 60 °C for 80 min. Dynamic indoor and outdoor experiments conducted in Kunming, a region with temperature fluctuations greater than 15 °C, show a reduction in peak temperature by 4.8 °C and an extended thermal retention period 2.3 times longer than without the composite. Additionally, the phase change composite exhibits excellent cushioning properties in its molten state, as validated by controlled impact tests. This work introduces a dual-functional, low-carbon material that combines waste recycling with energy-efficient building solutions, advancing the practical realization of zero-energy buildings.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"115 ","pages":"Article 115986"},"PeriodicalIF":8.9,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143508576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Noble metals improved the dehydrogenation, electronic and optical properties of TiH4 as the hydrogen storage material
IF 8.9 2区 工程技术
Journal of energy storage Pub Date : 2025-02-27 DOI: 10.1016/j.est.2025.115962
Tianrun Zheng
{"title":"Noble metals improved the dehydrogenation, electronic and optical properties of TiH4 as the hydrogen storage material","authors":"Tianrun Zheng","doi":"10.1016/j.est.2025.115962","DOIUrl":"10.1016/j.est.2025.115962","url":null,"abstract":"<div><div>Although the metallic-based tetrahydride is a promising high hydrogen capacity hydrogen storage material, the dehydrogenation mechanism of TiH<sub>4</sub> is entirely unknown. To explore the dehydrogenation mechanism and improve the dehydrogenation of TiH<sub>4</sub>, the dehydrogenation of TiH<sub>4</sub> and the influence of noble metals (TM = Pt, Pd and Ru) on the stability, dehydrogenation, electronic and optical properties of TiH<sub>4</sub> are studied by the first-principles method. The result shows that the Pd-doping has better stability in comparison to the Pt-doped and Ru-doped TiH<sub>4</sub>. Furthermore, the calculated hydrogen dissociation energy of TiH<sub>4</sub> is 2.7613 eV. Note that these noble metals can improve the hydrogen decomposed capacity of TiH<sub>4</sub> because the dissociation energy of the TM-doped TiH<sub>4</sub> is lower than that of the parent TiH<sub>4</sub>. In particular, the Ru-doping has better hydrogen decomposed capacity compared to the Pd-doping and Pt-doping. Naturally, the better dehydrogenation of the TM-doped TiH<sub>4</sub> is that these additive noble metals weaken the localized hybridization between Ti and H, which is demonstrated by the Ti<img>H bond. In addition, the undoped TiH<sub>4</sub> and the TM-doped TiH<sub>4</sub> show ultraviolet properties. In particular, the Ru-doping induces the main peak to occur migration from the ultraviolet region to the visible light region for TiH<sub>4</sub> hydrogen storage material. Therefore, I believe that the Ru metal is a better catalyst to improve the dehydrogenation of TiH<sub>4</sub>.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"115 ","pages":"Article 115962"},"PeriodicalIF":8.9,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143509443","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Numerical and experimental study on the influence of thermal behavior of phase change plate in high temperature and low ventilation speed environment
IF 8.9 2区 工程技术
Journal of energy storage Pub Date : 2025-02-27 DOI: 10.1016/j.est.2025.115977
Xiang Li , Zujing Zhang , Jiri Zhou , Ruiyong Mao , Hongwei Wu , Xing Liang
{"title":"Numerical and experimental study on the influence of thermal behavior of phase change plate in high temperature and low ventilation speed environment","authors":"Xiang Li ,&nbsp;Zujing Zhang ,&nbsp;Jiri Zhou ,&nbsp;Ruiyong Mao ,&nbsp;Hongwei Wu ,&nbsp;Xing Liang","doi":"10.1016/j.est.2025.115977","DOIUrl":"10.1016/j.est.2025.115977","url":null,"abstract":"<div><div>Against the backdrop of rising energy prices, the rational utilization of energy resources has become a pivotal concern. The effective application of phase change plates constitutes a crucial strategy for achieving this objective. A fundamental aspect of employing phase change plates is the selection of optimal thickness, a process that necessitates meticulous consideration to ensure optimal performance. In this paper, the effects of the external encapsulation material, environment temperature, ventilation speed, and thermal conductivity, melting temperature and latent heat of the internal phase change material on the melting time of the phase change plate were studied by experiments combined with numerical simulations. Subsequently, the relationship between thickness and time is modelled through fitting procedures. The main results are as follows: (1) The melting time of the phase change plate is linearly positively correlated with the thickness of the phase change plate, and the correlation is strong; (2) The effects of encapsulation materials, <em>V</em><sub><em>s</em></sub>, <em>T</em><sub><em>e</em></sub>, <em>T</em><sub>m</sub>, <em>Δr</em> and <em>λ</em> on the melting time of the phase change plate were obtained; (3) The encapsulation material of the phase change plate has little influence on its heat transfer, and cheaper materials can be selected when selecting the encapsulation material; (4) A relationship between the thickness of the phase change plate and the melting time is obtained, and this relationship is related to <em>V</em><sub><em>s</em></sub>, <em>T</em><sub><em>e</em></sub>, <em>T</em><sub>m</sub>, <em>Δr</em> and <em>λ</em>.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"115 ","pages":"Article 115977"},"PeriodicalIF":8.9,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143512537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Interlayer spaced hybrid WS2/NiCo(PO4)3/MXenes nanosheets for highly efficient asymmetric supercapacitors
IF 8.9 2区 工程技术
Journal of energy storage Pub Date : 2025-02-27 DOI: 10.1016/j.est.2025.115957
Palanisamy Rajkumar , Kasinathan Kasirajan , Vediyappan Thirumal , Akshaya Subhramaniyan Rasappan , Abdullah N. Alodhayb , Khalid E. Alzahrani , Saravanan Pandiaraj , Hong Kyoon Choi , Kisoo Yoo , Jinho Kim
{"title":"Interlayer spaced hybrid WS2/NiCo(PO4)3/MXenes nanosheets for highly efficient asymmetric supercapacitors","authors":"Palanisamy Rajkumar ,&nbsp;Kasinathan Kasirajan ,&nbsp;Vediyappan Thirumal ,&nbsp;Akshaya Subhramaniyan Rasappan ,&nbsp;Abdullah N. Alodhayb ,&nbsp;Khalid E. Alzahrani ,&nbsp;Saravanan Pandiaraj ,&nbsp;Hong Kyoon Choi ,&nbsp;Kisoo Yoo ,&nbsp;Jinho Kim","doi":"10.1016/j.est.2025.115957","DOIUrl":"10.1016/j.est.2025.115957","url":null,"abstract":"<div><div>Designing highly efficient ternary composite electrode materials with novel nanostructures plays a crucial role in enlightening both the high energy density and structure stability of supercapacitors. In this connection, we synthesized MXenes (Ti<sub>₃</sub>C₂) adorned tungsten disulfide (WS₂) and nickel cobalt phosphate (NCP) using a probe sonication process and facile hydrothermal method, respectively. The integration of WS₂ quantum dots and NCP microflowers within the Ti₃C₂ layers (NCP-M-W) significantly enhances the electrocatalytic efficiency of the NCP-M-W composite by eliminating the restacking issue, thereby making it a highly effective electrode for energy storage applications. Subsequently, the advantages of synthesizing the NCP-M-W with ternary metal formulation increase the layer-to-layer distance that allows the KOH electrolyte to penetrate the inner surface of the electrode. Due to the optimized inter-layer spacing, the NCP-M-W electrode achieved an impressive specific capacitance of 1020 F/g at a current density of 1 A/g. Interestingly, the fabricated NCP-M-W//AC asymmetric supercapacitor device (ASC) delivered outstanding energy and power densities of 38 Wh/kg and 703 W/kg at the 1 A/g current density owing to high specific surface area with more metal active sites and good conductivity. Whereas, the capacitance retention and coloumbic efficiency of the fabricated device are 73 % and 99.5 % for 15,000 cycles respectively. Hence, these results distinctly reveal that the prepared ternary electrode NCP-M-W can act as a proficient and reliable option as an electrode for high-performance supercapacitor applications.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"115 ","pages":"Article 115957"},"PeriodicalIF":8.9,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143508790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
In-situ observation of lithium dendrite growth regulated by the external magnetic field
IF 8.9 2区 工程技术
Journal of energy storage Pub Date : 2025-02-27 DOI: 10.1016/j.est.2025.116004
Shikang Wang , Qibo Deng , Jie Gu , Hai Liu , Yiou Wu , Pingwei Chen , Liuli Zhang , Cuihua An , Ning Hu
{"title":"In-situ observation of lithium dendrite growth regulated by the external magnetic field","authors":"Shikang Wang ,&nbsp;Qibo Deng ,&nbsp;Jie Gu ,&nbsp;Hai Liu ,&nbsp;Yiou Wu ,&nbsp;Pingwei Chen ,&nbsp;Liuli Zhang ,&nbsp;Cuihua An ,&nbsp;Ning Hu","doi":"10.1016/j.est.2025.116004","DOIUrl":"10.1016/j.est.2025.116004","url":null,"abstract":"<div><div>Lithium (Li) metal-based batteries are anticipated to play a pivotal role in the future evolution of battery technology due to their exceptionally high theoretical capacity. Nevertheless, the unregulated growth of Li dendrites remains a major impediment to their practical utilization. The production of Li dendrites results in a short circuit and a significant reduction in battery life. In this work, the growing state of Li dendrites at different current densities is in-situ observed, and a new strategy for suppressing Li dendrites using a magnetic field is proposed. Under the dual action of magnetic and electric fields, the lithium ion (Li<sup>+</sup>) is acted upon by the Lorentz force and forms a spiral motion. The results show that the Li dendrites are spherically deposited under a magnetic field, eliminating the influence of the tip effect. Moreover, it exhibits excellent cycling stability in Li//Cu cells, and the coulombic efficiency is as a whole up to 93.2 % over 150 cycles. The full-cell assembled with the ternary LiNi<sub>0.5</sub>Co<sub>0.2</sub>Mn<sub>0.3</sub>O<sub>2</sub> (NCM523) cathode exhibits high capacity retention and excellent rate performance. In summary, the innovative strategy of using a magnetic field to inhibit Li dendrite growth, as proposed in this study, holds significant research potential for driving the frontiers of Li metal-based batteries.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"115 ","pages":"Article 116004"},"PeriodicalIF":8.9,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143508580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The heat transfer enhancement mechanism for composite phase change material based on variable heating power and pore density
IF 8.9 2区 工程技术
Journal of energy storage Pub Date : 2025-02-27 DOI: 10.1016/j.est.2025.115954
Zilong Wang , Hua Zhu , Jintao Gui , Hua Zhang , Weidong Wu , Ying Li
{"title":"The heat transfer enhancement mechanism for composite phase change material based on variable heating power and pore density","authors":"Zilong Wang ,&nbsp;Hua Zhu ,&nbsp;Jintao Gui ,&nbsp;Hua Zhang ,&nbsp;Weidong Wu ,&nbsp;Ying Li","doi":"10.1016/j.est.2025.115954","DOIUrl":"10.1016/j.est.2025.115954","url":null,"abstract":"<div><div>Adding foam metal materials is one of the key methods to enhance the thermal conductivity of phase change materials (PCMs). To investigate the heat transfer mechanism of PCMs under different heat source powers and foam metal pore densities, a visualized thermal energy storage device was designed and constructed in this study. The effects of heat source power and the pore density of copper foam metal on the thermal properties of the composite PCMs, including internal temperature differences, equivalent thermal conductivity, comprehensive heat transfer coefficient, and heat storage performance during the melting process, were thoroughly analyzed. An empirical correlation for calculating the Nusselt number (<em>Nu</em>) of the composite PCMs was also derived. The research results indicate that the rate of temperature rise in the internal temperature difference of the composite PCMs increased with the rise in heat source power, while the melting time shortened accordingly. When the heat source power was increased from 30 W to 90 W, for composite PCMs with copper foam, the pore density of copper foam increased from 5PPI to 25PPI, and the rate of temperature rise in the internal temperature difference during the melting process enhanced from 176.9 % to 183.5 %, while the reduction in melting time enhanced from 61.9 % to 62.5 %. The comprehensive heat transfer coefficient of the composite PCMs is directly proportional to the heating power and inversely proportional to the pore density. When the heating power is increased from 30 W to 90 W, the comprehensive heat transfer coefficient of the composite PCM with a pore density of 5PPI is increased by 61 %, while that of 25PPI is increased by 59 %. Additionally, based on the structural parameters of copper foam metal, an empirical correlation for the <em>Nu</em> during the melting process of the composite PCM was derived, the error between the experimental value and the calculated value is ±5 %. In addition, the dimensionless heat-storage rate and dimensionless heat-storage density decrease with the increase of heating power. For 5PPI foam metal copper composite paraffin PCM, when the heating power increases from 30 W to 90 W, the dimensionless heat-storage rate and dimensionless heat-storage density decrease from 1.14 to 1.04 and from 0.98 to 0.93, respectively. For the foam metal copper composite paraffin PCM with different pore density, the dimensionless heat-storage rate decreases with the increase of pore density. When the heating power is 30 W, the values are 1.14, 1.11 and 1.08, respectively. On the other hand, the dimensionless heat-storage density increased with the increase of pore density, and the values of 0.984, 0.988, and 0.995, respectively.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"115 ","pages":"Article 115954"},"PeriodicalIF":8.9,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143508585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Shared hybrid energy storage system optimal configuration in multi-energy microgrid system considering the transformer waste heat utilization: A tri-layer programming approach
IF 8.9 2区 工程技术
Journal of energy storage Pub Date : 2025-02-27 DOI: 10.1016/j.est.2025.115501
Zhuoying LIAO , Tonghe WANG , Jing WANG , Jing ZHANG , Tian TIAN , Jie SHU
{"title":"Shared hybrid energy storage system optimal configuration in multi-energy microgrid system considering the transformer waste heat utilization: A tri-layer programming approach","authors":"Zhuoying LIAO ,&nbsp;Tonghe WANG ,&nbsp;Jing WANG ,&nbsp;Jing ZHANG ,&nbsp;Tian TIAN ,&nbsp;Jie SHU","doi":"10.1016/j.est.2025.115501","DOIUrl":"10.1016/j.est.2025.115501","url":null,"abstract":"<div><div>The shared hybrid energy storage system (SHESS) offers a potential solution to high initial investment costs for multi-energy microgrid system (MEMS) users and satisfies demands of loads with fluctuations across multiple timescales. In this context, this paper focuses on SHESS applied in MEMS. Firstly, a pricing method combining capacity leasing with flow billing is proposed. Secondly, a tri-layer programming approach is constructed to obtain the optimal leased capacities of different types of energy storage (ES). This approach balances the interests of SHESS operators and MEMS users in the upper and middle layers, while considering the response characteristics in the lower layer. Additionally, this paper introduces a transformer waste heat utilization system (TWHUS) to reduce energy costs in MEMS. To facilitate the calculation of waste heat, a three-dimensional finite element model is established to derive a quadratic mathematical model for heat generation power based on the transformer load rate. Finally, simulation results from various comparative experiments demonstrate that: (1) The proposed pricing method reduces the cost of MEMS by 14.92 %. (2) The comparison of operating costs with and without TWHUS shows a 22.64 % reduction in overall costs, confirming the system's economic viability. (3) Comparing different types of ES combinations reveals that a three-type ES combination minimizes operational power fluctuations in SHESS. (4) The proposed combination of algorithms can efficiently and effectively solve complex tri-layer optimization problems. (5) The offered tri-layer programming approach can achieve a more balanced and reasonable leased capacity configuration, with highly efficient, needing only 5 iterations to converge.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"115 ","pages":"Article 115501"},"PeriodicalIF":8.9,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143508798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hemp-derived hierarchically porous carbon cathode enabling high energy storage for advanced zinc-ion hybrid capacitor
IF 8.9 2区 工程技术
Journal of energy storage Pub Date : 2025-02-27 DOI: 10.1016/j.est.2025.115975
Quanxing Liao, Shenteng Wan, Yongdong Liu, Xiaohui Niu, Deyi Zhang, Hongxia Li, Kunjie Wang
{"title":"Hemp-derived hierarchically porous carbon cathode enabling high energy storage for advanced zinc-ion hybrid capacitor","authors":"Quanxing Liao,&nbsp;Shenteng Wan,&nbsp;Yongdong Liu,&nbsp;Xiaohui Niu,&nbsp;Deyi Zhang,&nbsp;Hongxia Li,&nbsp;Kunjie Wang","doi":"10.1016/j.est.2025.115975","DOIUrl":"10.1016/j.est.2025.115975","url":null,"abstract":"<div><div>Zinc-ion hybrid capacitors (ZIHCs) combining the advantages of secondary metal-ion batteries and supercapacitors, show promising application prospects in energy storage realm due to its intrinsic low cost, safety and scalable production. However, the low charge storage capability of carbon cathode does not match the high capacity of zinc anode, resulting in unsatisfied energy supply and poor cycling durability. The designing and tuning of carbon materials microstructure is one of the key breakthroughs for achieving high performance ZIHCs. Herein, a biomass porous carbon rich in oxygen functional groups (HRPC-X) was controllably prepared by pyrolysis of HEMP assisted with high temperature chemical activation. The features of high specific surface area, hierarchically porous structure and abundant oxygen-containing functional groups of HRPC-4 can not only provide abundant active sites and shorten ion/electron transfer distance but also improve the surface wettability and pseudocapacitance contribution. Hence, the as-prepared HRPC-4 demonstrates a superior capacitance performance in both KOH and Zn(CF<sub>3</sub>SO<sub>3</sub>)<sub>2</sub> aqueous electrolyte. Specifically, the as-assembled Zn//2 M Zn(CF<sub>3</sub>SO<sub>3</sub>)<sub>2</sub>//HRPC-4 ZIHC device delivers a high energy density of 168.8 W h kg<sup>−1</sup>, a power output of 45 kW kg<sup>−1</sup> and an excellent cycling stability with as high as 95.2 % of capacity retention after 10,000 cycles at 5 A g<sup>−1</sup>.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"115 ","pages":"Article 115975"},"PeriodicalIF":8.9,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143512534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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