Shengzhang Deng , Jian Zhang , Lin Lin , Jing Liu , Junyou Shi
{"title":"Freeze-thaw synergistic salt template prepared self-supporting MXene/wood-derived porous carbon electrode for supercapacitors","authors":"Shengzhang Deng , Jian Zhang , Lin Lin , Jing Liu , Junyou Shi","doi":"10.1016/j.est.2024.114846","DOIUrl":"10.1016/j.est.2024.114846","url":null,"abstract":"<div><div>Supercapacitors are anticipated to be utilized in the upcoming generation of emerging energy storage devices. The electrode stands out as the most crucial component of the supercapacitor, and a bulk electrode containing sufficient electrochemically active substances is beneficial for enhancing the energy density of the energy storage device. Furthermore, the pore structure and wettability regulation of the electrode are pivotal factors that determine its electrochemical performance. In this study, we propose a monolithic electrode which was created by impregnating different concentrations of MXene dispersions into wood-based carbon materials co-treated with freeze-thaw/LiCl salt template, assisted by freezing treatment. The integration of MXene and freeze-thaw/LiCl salt template wood results in a layered porous structure that enhances both wettability and conductivity of the electrode. Freeze-thaw/LiCl salt template carbonized wood@MXene-4 (FCW@MXene-4) demonstrates an impressive electrochemical performance reaching 7.7 F cm<sup>−2</sup> (184.5 F g<sup>−1</sup>) at a current density of 1 mA cm<sup>−2</sup>. Additionally, when assembled into a symmetric supercapacitor (SSC), it exhibits high specific capacitance at 3.4 F cm<sup>−2</sup> (34.1 F g<sup>−1</sup>/17 F cm<sup>−3</sup>) and high energy density at 0.478 mWh cm<sup>−2</sup> (6 Wh kg<sup>−1</sup>/2.39 mWh cm<sup>−3</sup>) at 1 mA cm<sup>−2</sup>, with a capacity retention rate of 88 % after 10,000 cycles. This research introduces an innovative self-supporting thick electrode design strategy for high-performance energy storage devices.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"106 ","pages":"Article 114846"},"PeriodicalIF":8.9,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142759267","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}
Zan Xu, Tao Zhou, Yanfei Ha, Xuanye Chen, Xiaoyu Zhu, Junwen Tao, Yongsheng Liu
{"title":"Mn-doped NiCo LDH nanosheets with rich oxygen vacancies for high-performance supercapacitors and efficient oxygen evolution","authors":"Zan Xu, Tao Zhou, Yanfei Ha, Xuanye Chen, Xiaoyu Zhu, Junwen Tao, Yongsheng Liu","doi":"10.1016/j.est.2024.114848","DOIUrl":"10.1016/j.est.2024.114848","url":null,"abstract":"<div><div>Nickel‑cobalt layered double hydroxides (NiCo LDHs), as competitive pseudocapacitive materials, are commonly used in supercapacitors. But relatively low capacitance caused by poor electrical conductivity restricts their further applications in future supercapacitors and so it is urgent to find a suitable modification method for NiCo LDH. Herein we simultaneously introduce Mn and oxygen vacancies into NiCo LDH via a facile hydrothermal method, and the as-synthesized NiCo LDH containing oxygen-rich vacancy and Mn (We abbreviate it as Ov-NCM) with improved electrical conductivity and morphology exhibits 4253 F g<sup>−1</sup> specific capacitance at a current density of 1 A g<sup>−1</sup>. Furthermore, the Asymmetric supercapacitors (ASC) device, composed of Ov-NCM as the positive electrode and activated carbon (AC) as the negative electrode, provides 71 Wh kg<sup>−1</sup> energy density and 801 W kg<sup>−1</sup> power density in 2 M KOH/polyvinyl alcohol (PVA). After 10,000 cycles, the capacitance retention rate of this device reaches 93.6 % when the current density is 8 A g<sup>−1</sup>, indicating a good cycle stability. This work provides a new strategy for developing high effective energy storage devices.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"106 ","pages":"Article 114848"},"PeriodicalIF":8.9,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142759270","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}
{"title":"Novel multi-modular power conditioning system and decoupling control strategy for SMES with coupled superconducting coil","authors":"Wenyong Guo, Yun Hong, JianYu Lan, Wenju Sang, Wenxu Liu, Shaotao Dai","doi":"10.1016/j.est.2024.114536","DOIUrl":"10.1016/j.est.2024.114536","url":null,"abstract":"<div><div>The high-temperature superconducting magnetic energy storage system (HTS-SMES) utilizes a superconducting coil (SC) to store electric energy in a magnetic field. It has several advantages such as high efficiency, fast response, and infinite charge–discharge cycles. Coupling two SCs made of different HTS materials, known as coupled SC (CSC), can enhance the utilization rate of HTS tapes, reduce manufacturing costs, increase the energy storage density of the SC, and lower magnetic leakage. However, the presence of a coupled magnetic field in CSC makes precise power and current regulation of the individual SC challenging. Additionally, the self-inductances of the individual SCs, composed of different materials, typically differ from each other. Consequently, the current variation induces electromotive force in each SC that differs from the others, necessitating the design of power converters with different voltage ratings connected to each SC. To address the difficulties associated with SMES implementation using CSC, this paper proposes novel modular power conditioning system (MPCS) and decoupling control strategy for SMES. The MPCS enables the flexible design of individual SC power ratings by selecting the appropriate number of power modules. The decoupling control ensures precise current control of each individual SC, which significantly reduces the current ripple of the SCs. Moreover, by employing carrier phase shift modulation, the total harmonic distortion (THD) of the PCS output current is as low as 0.79%. Furthermore, the feedforward power control is proposed to reduce the power control overshoot, and the current sharing control is presented to ensure precise current sharing between each SC. Simulation results verify the efficacy of the proposed approaches.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"106 ","pages":"Article 114536"},"PeriodicalIF":8.9,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142759320","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}
{"title":"Review of integrated thermal management system research for battery electrical vehicles","authors":"Zhijie Zhu , Yongchang Zhang , Agula Chen , Jiajia Chen , Yu Wu , Xiaolin Wang , Tianxiang Fei","doi":"10.1016/j.est.2024.114662","DOIUrl":"10.1016/j.est.2024.114662","url":null,"abstract":"<div><div>The integration of thermal management systems (TMS) is a key development trend for battery electric vehicles (BEVs). This paper reviews the integrated thermal management systems (ITMS) of BEVs, analyzes existing systems, and classifies them based on the integration modes of the air conditioning system, power battery, and electric motor electronic control system. The characteristics of different integration modes are compared in detail. Additionally, the traditional control strategies and new control strategies combined with intelligent optimization algorithms are summarized. Finally, the evaluation metrics and research methods for TMS in BEVs are reviewed. Based on the above analysis, the following conclusions are drawn: (1) ITMS represent the future development trend. Energy consumption of two integrated subsystems is approximately 10 % lower than that of a distributed system, and the energy consumption of three integrated subsystems is about 20 % lower than that of two subsystems; (2) Currently, ITMS primarily use feedback control to manage key components of individual subsystems, such as compressor speed, water pump speed, and expansion valve opening. However, it has not yet coordinated the control of various components from the perspective of the vehicle integrated system to achieve intelligent control; (3) Existing evaluation metrics for TMS tend to focus on local subsystems, while there is limited research on a comprehensive evaluation from a macro vehicle-wide perspective. A unified evaluation system for integrated vehicle thermal management has yet to be established.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"106 ","pages":"Article 114662"},"PeriodicalIF":8.9,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142759232","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}
Yanghan Su , Junjie Shen , Xing Chen , Xiaobin Xu , Shaojun Shi , Xiaolin Wang , Fei Zhou , Xinyan Huang
{"title":"Corrigendum to “Bio-based eutectic composite phase change materials with enhanced thermal conductivity and excellent shape stabilization for battery thermal management” [J. Energy Storage 100 (2024) 113712]","authors":"Yanghan Su , Junjie Shen , Xing Chen , Xiaobin Xu , Shaojun Shi , Xiaolin Wang , Fei Zhou , Xinyan Huang","doi":"10.1016/j.est.2024.114837","DOIUrl":"10.1016/j.est.2024.114837","url":null,"abstract":"","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"106 ","pages":"Article 114837"},"PeriodicalIF":8.9,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142759234","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}
Qin Dong , Xiangwei Zhao , Xingyue Ren , Wei Hong , Rong Li , Xinglong Gou , Tao Wang , Cunpu Li
{"title":"Dopamine-modified separator anchoring polysulfides via electrostatic interaction for enhanced Lithium-sulfur batteries","authors":"Qin Dong , Xiangwei Zhao , Xingyue Ren , Wei Hong , Rong Li , Xinglong Gou , Tao Wang , Cunpu Li","doi":"10.1016/j.est.2024.114855","DOIUrl":"10.1016/j.est.2024.114855","url":null,"abstract":"<div><div>Lithium‑sulfur (Li<img>S) batteries possess high energy density and low cost, which have been considered as the most promising energy storage devices. However, the commercialization of Li<img>S batteries has been impeded by the severe shuttling of soluble polysulfides during the charge-discharge cycling. In this work, we propose a novel strategy to modify polypropylene (PP) separator by grafting dopamine, a compound with phenolic hydroxyl and amino groups, to anchor polysulfides while maintaining the separator's porous structure for efficient lithium ion transport. Density functional theory (DFT) calculations reveal that dopamine polymer layer can effectively suppress polysulfides shuttling through electrostatic interaction with lithium atoms in polysulfides. Moreover, dopamine-modified separator enhances the electrolytes affinity and facilitates lithium ion transport. Cyclic voltammetry measurements, a high initial capacity of 1123 mAh·g<sup>−1</sup> at 0.5C, lithium metal corrosion resistance, and the morphology of the cycled separators all confirm that dopamine-modified separator effectively mitigates the shuttle effect while maintaining the improved battery performance. This work opens up a new approach for the practical application of Li<img>S batteries.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"106 ","pages":"Article 114855"},"PeriodicalIF":8.9,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142759266","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}
{"title":"Integrated optimization for sizing, placement, and energy management of hybrid energy storage systems in renewable power systems","authors":"Seugnchan Jeon, Sungwoo Bae","doi":"10.1016/j.est.2024.114793","DOIUrl":"10.1016/j.est.2024.114793","url":null,"abstract":"<div><div>Power systems reliant on renewable energy sources (RES) encounter supply-demand imbalances and stability challenges due to their inherent uncertainties. Hybrid energy storage systems (HESS) have emerged as a flexible and cost-effective solution to address these issues. This paper proposes an integrated optimization method for the capacity, location, and energy management of a HESS in RES-based power systems. The method optimizes battery energy storage system (BESS), electrolyzer (EL), fuel cell (FC), and hydrogen storage tank (HST) to minimize total costs, including power purchase, curtailment compensation, operation and maintenance (O&M), and investment costs, alongside voltage profile deviation index (VPDI) and active power loss index (APLI). A novel hybrid framework is proposed, utilizing mixed-integer linear programming (MILP) optimization at the master level and non-dominated sorting genetic algorithm II (NSGA-II) optimization at the slave level. This framework ensures that MILP provides robust solutions, while NSGA-II derives balanced optimal solutions from the optimal Pareto front. The proposed method was validated using real seasonal data from Korea and tested in IEEE 33 and IEEE 69 bus systems against various benchmark cases. Results indicate significant improvements, with VPDI enhanced by 16.00 % and 10.11 %, APLI by 15.64 % and 12.15 %, and total costs reduced by 58.67 % and 50.56 %, respectively. The sensitivity analysis demonstrated the robustness of the proposed method, showing zero sensitivity to iterations and positive correlations with increased levels of RES. Further verification against other optimization algorithms showed that the proposed method excels in cost efficiency, voltage stability, and line loss reduction, providing highly reliable results.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"106 ","pages":"Article 114793"},"PeriodicalIF":8.9,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142759272","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}
{"title":"A design analysis of EV charging using multiport converter and control strategy using MWOA","authors":"Chitra Devi S , Ramkumar A , Rajesh K","doi":"10.1016/j.est.2024.114735","DOIUrl":"10.1016/j.est.2024.114735","url":null,"abstract":"<div><div>Recently, there is a massive growth of electric cars and renewable Electric Vehicles (EVs). The hybrid energy sources like Photovoltaic (PV), and battery system is employed for EV system as an input. The energy and battery sources are converted using Multi-port DC-to-DC converter. In this study, we propose a multiport converter-based EV charging system that utilizes both PV and battery sources. The multiport DC-to-DC converter manages the energy flow from these sources to the EVs. The modified whale optimization algorithm (MWOA) is employed to optimize the PWM duty cycle and controller parameters for enhanced performance. A brief modeling of the multiport converter-dependent charging station for EV to integrate power generation of PV, battery energy storage system is employed using MATLAB software. An EV charging control strategy is presented finally. Besides, the switching operation to charge and discharge the battery source are carried based on demand requirements of EV's. The simulation outcomes are estimated and the outcomes of PV and batter power, SOC charging percentage, and EV charging current is projected. Also, the proposed method based on multiport converter system integrated with PV and battery offers enhanced rate of stabilization which includes voltage gain, current ripple, efficiency, switching loss, THD, conduction loss, duty cycle. The outcomes compared reveals that the proposed strategy is offering enhanced outcome than others.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"106 ","pages":"Article 114735"},"PeriodicalIF":8.9,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142759322","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}
{"title":"Multi-agent modeling for energy storage charging station scheduling strategies in the electricity market: A cooperative learning approach","authors":"Xintao Zheng, Changjiang Ju, Genke Yang, Jian Chu","doi":"10.1016/j.est.2024.114226","DOIUrl":"10.1016/j.est.2024.114226","url":null,"abstract":"<div><div>With integration of an energy storage system (ESS), an energy storage charging station serves as pivotal intermediaries between the smart grid and electric vehicles (EVs). This station utilizes the ESS to enhance grid stability and facilitate energy management. Participation in electricity market transactions offers revenue opportunities for charging stations, but it also introduces operational challenges, due to fluctuating electricity market prices and diverse energy demands and supplies. In this paper, we study the operation strategy optimization problem for the charging station, addressing economic and service challenges influenced by market volatility and energy diversity. The optimization objective considers not only maximizing economic benefits from the electricity market and EV services but also minimizing penalties associated with EV service quality. We propose a model that accounts for the dynamics of the electricity market, uncertainties from EV demands, and disturbances from green power generation, optimizing the power scheduling of the ESS and multiple charging piles (CPs) to determine transaction power in the market. The cooperative scheduling strategies for the ESS and CPs are learned using the proposed heterogeneous Multi-agent Deep Deterministic Policy Gradient method. This approach features distributed agents learning to determine decision variables for both the ESS and CPs, while a joint critic network assesses the station’s overall objectives to guide their cooperative learning. The proposed method was tested against three state-of-the-art benchmark methods, which showed our method achieves better results.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"106 ","pages":"Article 114226"},"PeriodicalIF":8.9,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142759321","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}
Si-Xin Jia , Sheng Liang , Tian-Qi Xiang , Jin-Rong Zhang , Da-Dong Yan , Jian-Jun Zhou , Lin Li
{"title":"Liquid electrolyte confined in polymer crystals: A novel strategy for quasi-solid-state lithium‑oxygen batteries","authors":"Si-Xin Jia , Sheng Liang , Tian-Qi Xiang , Jin-Rong Zhang , Da-Dong Yan , Jian-Jun Zhou , Lin Li","doi":"10.1016/j.est.2024.114806","DOIUrl":"10.1016/j.est.2024.114806","url":null,"abstract":"<div><div>Lithium‑oxygen batteries (LOBs) have very high theoretical energy density, but the cycle performance is not satisfactory due to numerous obstacles such as the poor interfacial stability of liquid electrolyte (LE) on both cathode and Li metal anode, the leakage of liquid electrolyte, the cross-over of oxygen and moisture, etc. Quasi-solid-state polymer electrolytes are feasible choices to deal with the problems associated with LE and Li anode. Here, a novel strategy is used to prepare quasi-solid-state polymer electrolytes by confining LE in polymer crystals. The trioxymethylene is polymerized in LE, and the as formed polyoxymethylene (POM) crystallizes with the formation of lamellar crystals of hierarchical micro/nano architectures, which confine the liquid exponents in LE and become quasi-solid-state POM electrolytes (POMEs). The POME-30 has high ionic conductivity, wide electrochemical stability window and high Li<sup>+</sup> transference number. Molecular dynamics simulation shows that there exist channels for Li<sup>+</sup> to migrate faster on the interface of POM lamellar crystals. POME-30 has excellent interfacial compatibility with Li anode, and can promote more uniform Li deposition and stripping. The in situ formed quasi-solid-state Li|POME-30|O<sub>2</sub> batteries can be cycled for 143 cycles in O<sub>2</sub> and 67 cycles in ambient air. XPS analysis results suggest that the cross-over of H<sub>2</sub>O and CO<sub>2</sub> can be greatly suppressed. Moreover, the quasi-solid-state Li|POME-30|air pouch battery can be stably cycled for over 30 cycles, showing great safety performance even folded or cut. Our strategy of in situ integrating rigid lamellar crystals in LE has paved a new way for exploring advanced polymer electrolyte, which is sure to promote the development of high energy-density lithium metal batteries.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"106 ","pages":"Article 114806"},"PeriodicalIF":8.9,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142757740","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}