Journal of energy storage最新文献_第8页

A fusion extended long short-term memory learning architecture for capacity trajectory prediction of Li-ion battery 一种用于锂离子电池容量轨迹预测的融合扩展长短期记忆学习架构

IF 8.9 2区工程技术

Journal of energy storage Pub Date : 2025-05-26 DOI: 10.1016/j.est.2025.116994

Tingting Luo , Zhengyi Bao , Zhiwei He , Mingyu Gao

{"title":"A fusion extended long short-term memory learning architecture for capacity trajectory prediction of Li-ion battery","authors":"Tingting Luo , Zhengyi Bao , Zhiwei He , Mingyu Gao","doi":"10.1016/j.est.2025.116994","DOIUrl":"10.1016/j.est.2025.116994","url":null,"abstract":"<div><div>The capacity of lithium-ion batteries is a critical indicator for battery management systems(BMS), and accurate capacity prediction is essential for ensuring the reliable and safe operation of battery systems. Traditional deep learning methods often struggle to overcome the inherent limitations of time-series modeling, making it challenging to accurately identify phenomena such as capacity regeneration. To address this issue, this paper introduces a novel approach for predicting lithium battery capacity trajectories, leveraging data preprocessing and the fusion of extended Long Short-Term Memory(LSTM) networks. Initially, we apply the successive variational modal decomposition(SVMD) to preprocess the battery capacity aging curve, which is decomposed into intrinsic mode functions(IMFs) and residuals. A sliding window technique is then employed on these data. The varying IMF data is inputted into the extended LSTM network to facilitate accurate time-series modeling, while the smoothly decreasing residual data is fed into a faster Gated Recurrent Unit to enhance prediction efficiency. This dual-target learning approach effectively captures battery capacity trends, even in the presence of capacity regeneration phenomena and significant inflection points. Extensive experiments are conducted using the NASA and MIT datasets, and the results demonstrate that the proposed method successfully predicts battery capacity trajectories. Notably, compared to state-of-the-art methods, our approach achieves reductions in mean absolute errors(MAEs) and root mean square errors(RMSEs) by an average of 60.44% and 62.85%, respectively.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"128 ","pages":"Article 116994"},"PeriodicalIF":8.9,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144135043","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

Janus POSS-based hydrogel electrolytes with high-ionic conductivity and low-temperature-resistance for all-in-one flexible supercapacitors Janus基于poss的水凝胶电解质，具有高离子电导率和耐低温性能，用于一体化柔性超级电容器

IF 8.9 2区工程技术

Journal of energy storage Pub Date : 2025-05-26 DOI: 10.1016/j.est.2025.117216

Xiaojing Zhang , Luxin Cao , Xiaobo Wang , Zhen Liu , Jiwei Peng , Wentong Yang , Kaiqi Fan

{"title":"Janus POSS-based hydrogel electrolytes with high-ionic conductivity and low-temperature-resistance for all-in-one flexible supercapacitors","authors":"Xiaojing Zhang , Luxin Cao , Xiaobo Wang , Zhen Liu , Jiwei Peng , Wentong Yang , Kaiqi Fan","doi":"10.1016/j.est.2025.117216","DOIUrl":"10.1016/j.est.2025.117216","url":null,"abstract":"<div><div>With the continuous advancement of smart wearable devices and flexible electronics, flexible hydrogel supercapacitors are increasingly becoming one of the ideal wearable energy storage systems due to their high water content and excellent mechanical flexibility. However, it remains a challenge for flexible hydrogel supercapacitors to maintain sufficient flexibility and satisfactory electrochemical performance at sub-zero temperatures. In this study, we developed an innovative hydrogel electrolyte by integrating 2-hydroxypropyl-β-cyclodextrin (HP-β-CD) into the hydrogel network structure of water-soluble Janus-type polyhedral oligosiloxane (AS-POSS)-based hydrogel. This strategic integration significantly enhanced the ionic transport efficiency and mechanical properties of the hydrogel. Our findings revealed that the modified hydrogel electrolyte exhibited not only excellent flexibility (1208.6 % at 25 °C and 1006.3 % at −40 °C) but also impressive ionic conductivity (86.6 mS cm<sup>−1</sup> at 25 °C and 73.2 mS cm<sup>−1</sup> at −40 °C). The integrated supercapacitor, featuring low interfacial resistance, was successfully fabricated via in situ polymerization of aniline. This supercapacitor exhibits a high areal capacitance of 1158.67 mF cm<sup>−2</sup> at a current density of 0.2 mA cm<sup>−2</sup> and a capacitance retention of >95 % in 2000 charge/discharge cycles, surpassing the performance of most previously reported integrated supercapacitors. This approach enhances the mechanical properties and electrical conductivity of the hydrogel electrolyte, offering a potential application for hydrogel supercapacitors in flexible energy storage devices.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"128 ","pages":"Article 117216"},"PeriodicalIF":8.9,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144134992","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

Facile growth of Co2NiO4 nanowire arrays coating on MnO2 nanowires for high performance asymmetric supercapacitor applications Co2NiO4纳米线阵列涂层在MnO2纳米线上的快速生长，用于高性能非对称超级电容器

IF 8.9 2区工程技术

Journal of energy storage Pub Date : 2025-05-26 DOI: 10.1016/j.est.2025.117207

Shijie Ren, Shining Zhang, Xiuyun Zhang, Yajuan Jiang, Chunyu Xu, Zaohui Lei, Minlv Wei, Guisheng Zhu, Yunyun Zhao, Huarui Xu

{"title":"Facile growth of Co2NiO4 nanowire arrays coating on MnO2 nanowires for high performance asymmetric supercapacitor applications","authors":"Shijie Ren, Shining Zhang, Xiuyun Zhang, Yajuan Jiang, Chunyu Xu, Zaohui Lei, Minlv Wei, Guisheng Zhu, Yunyun Zhao, Huarui Xu","doi":"10.1016/j.est.2025.117207","DOIUrl":"10.1016/j.est.2025.117207","url":null,"abstract":"<div><div>This research proposes an efficient method for the synthesis of Co<sub>2</sub>NiO<sub>4</sub> nanowire arrays that are grown on MnO<sub>2</sub> nanowire surface (MnO<sub>2</sub>@Co<sub>2</sub>NiO<sub>4</sub>) for use as composite electrode in supercapacitors. Due to its unique core-shell architecture incorporating double nanowires, the prepared MnO<sub>2</sub>@Co<sub>2</sub>NiO<sub>4</sub> composite exhibits a considerable specific surface area of 101 m<sup>2</sup> g<sup>−1</sup>, and a total pore volume of 0.342 cm<sup>2</sup> g<sup>−1</sup>, which are favorable for the improvement of the electrical properties. So, it exhibits a high specific capacitance of 1025 g<sup>−1</sup> at 1 A g<sup>−1</sup>, and a good rate performance with a capacitance retention of 73 % at 20 A g<sup>−1</sup>. In addition, the fabricated MnO<sub>2</sub>@Co<sub>2</sub>NiO<sub>4</sub>//bagasse porous carbon device also demonstrates an excellent energy density of 46.2 Wh kg<sup>−1</sup> at a power density of 807.3 Wh kg<sup>−1</sup>, along with a good cycle performance with a capacitance retention of 87 % after 5000 cycles at 10 A g<sup>−1</sup>, indicating that the prepared MnO<sub>2</sub>@Co<sub>2</sub>NiO<sub>4</sub> holds broad application prospects as composite electrode in supercapacitors with good performance.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"128 ","pages":"Article 117207"},"PeriodicalIF":8.9,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144134993","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

Advanced thermal regulation of electronic components: Ultrasonic field integration in PCM-based heat sinks under cyclic thermal shock 电子元件的先进热调节：循环热冲击下基于pcm的散热器的超声场集成

IF 8.9 2区工程技术

Journal of energy storage Pub Date : 2025-05-26 DOI: 10.1016/j.est.2025.117116

Amin Shahsavar , Mahan Hasani , Maziar Moradvandi , Müslüm Arıcı

{"title":"Advanced thermal regulation of electronic components: Ultrasonic field integration in PCM-based heat sinks under cyclic thermal shock","authors":"Amin Shahsavar , Mahan Hasani , Maziar Moradvandi , Müslüm Arıcı","doi":"10.1016/j.est.2025.117116","DOIUrl":"10.1016/j.est.2025.117116","url":null,"abstract":"<div><div>Thermal management of electronic equipment in thermal shock conditions is necessary to prevent device failure and reduce efficiency and increase their useful life. In the present research, the effectiveness of using an ultrasonic field to manage the thermal conditions of a heat sink containing phase change material exposed to cyclic thermal shock is numerically investigated. The performance of the system is evaluated over 2000 s. In the first 1000 s, a constant heat flux of 30 W/cm<sup>2</sup> is applied to the bottom of the heat sink, while in the second 1000 s, 5 thermal shocks are applied to the bottom of the heat sink, each lasting for 100 s. Four different values for the shock heat flux (60, 90, 120, and 150 W/cm<sup>2</sup>) and three different transducer powers (15, 30, and 60 W) are considered. The results indicated that for shock heat fluxes of 60, 90, 120, and 150 W/cm<sup>2</sup>, the maximum CPU temperature in the absence of an ultrasonic field reaches the 90 °C safe operating threshold within 1815, 1615, 1450, and 1405 s, respectively. However, when the ultrasonic field is applied, the maximum temperature of the system consistently remains below 90 °C.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"128 ","pages":"Article 117116"},"PeriodicalIF":8.9,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144139311","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

Coordinated power sharing in a low voltage direct current microgrid with photovoltaic and hybrid energy storage system for two-wheeler electric vehicle charging 基于光伏与混合储能系统的低压直流微电网两轮电动车充电协调电力共享

IF 8.9 2区工程技术

Journal of energy storage Pub Date : 2025-05-26 DOI: 10.1016/j.est.2025.117203

Sarthak Mohanty , Shubhranshu Mohan Parida , Pravat Kumar Rout , Buddhadeva Sahoo

{"title":"Coordinated power sharing in a low voltage direct current microgrid with photovoltaic and hybrid energy storage system for two-wheeler electric vehicle charging","authors":"Sarthak Mohanty , Shubhranshu Mohan Parida , Pravat Kumar Rout , Buddhadeva Sahoo","doi":"10.1016/j.est.2025.117203","DOIUrl":"10.1016/j.est.2025.117203","url":null,"abstract":"<div><div>The increasing popularity of electric vehicles (EVs), driven by technological advances and a heightened awareness of environmental sustainability, has led to the commercial production of solar-powered battery charging stations. This shift is further supported by the declining costs of photovoltaic (PV) systems. This study presents a solar-powered EV charging station equipped with a 100 V Direct Current (DC) bus, incorporating a PV system and a hybrid energy storage system (HESS). The HESS integrates batteries and supercapacitors to efficiently regulate charging demand changes and stabilize local loads. A unique State of Charge (SoC)-based current-sharing coefficient and voltage error feed-forward loop facilitate accurate DC bus voltage regulation, reducing battery stress by using supercapacitors for transient load management. The proposed system achieves DC bus voltage regulation within 30–45 ms, reducing undershoot and overshoot by 74.3 % and 78.9 %, respectively, compared to conventional methods. Additionally, the voltage ripple is minimized to 0.9 %, representing an 80.0 % improvement. Two two-wheeler EVs are charged using multi-rate constant current charging, which optimizes SoC levels and enhances the State of Health (SoH) of EV batteries. The power management system is meticulously assessed under various operating conditions, reflecting different levels of PV power availability and load demands. The model is simulated using MATLAB/SIMULINK and validated through OPAL-RT OP-4510 real-time simulator, with results confirming the system's efficiency, stability, and reliability.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"128 ","pages":"Article 117203"},"PeriodicalIF":8.9,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144134953","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

Coherent structure analysis of double-helix vortex rope in pump turbine operating in turbine mode based on POD and DMD 基于POD和DMD的水轮机运行模式双螺旋涡绳相干结构分析

IF 8.9 2区工程技术

Journal of energy storage Pub Date : 2025-05-26 DOI: 10.1016/j.est.2025.117144

Guodong Liu , Longgang Sun , Pengcheng Guo , Yanyan Li , Wei Wang , Zhihu Wang

{"title":"Coherent structure analysis of double-helix vortex rope in pump turbine operating in turbine mode based on POD and DMD","authors":"Guodong Liu , Longgang Sun , Pengcheng Guo , Yanyan Li , Wei Wang , Zhihu Wang","doi":"10.1016/j.est.2025.117144","DOIUrl":"10.1016/j.est.2025.117144","url":null,"abstract":"<div><div>Under low-part load conditions, Double-helix Vortex Rope (DVR) can occur in the draft tube of pump turbines, causing pressure pulsations that contribute significantly to the instability of Pumped Storage Power Stations (PSPS). With the intent of studying the characteristics of the DVR in draft tube, this paper focuses on a model pump turbine that operated stably at 43 % low-part load. Systematic numerical calculations were conducted, extracting 600 snapshots of the flow field from longitude slice of the draft tube during last 5 runner revolutions to form a pressure matrix for Proper Orthogonal Decomposition (POD) and Dynamic Mode Decomposition (DMD). The results show that the pressure pulsation induced by DVR (<em>f</em><sub>DVR</sub>) is 0.8 <em>f</em><sub>n</sub>, which is approximately twice the traditional Single-helix Vortex Rope (SVR). POD analysis revealed that the dominant frequency of the POD mode 1 and 2 are both <em>f</em><sub>DVR</sub> and the summation energy contributions of them exceeded 70 %. However, frequency aliasing existed in each POD modes. In contrast, DMD analysis showed that the frequency of the DMD mode 3 with 1 % energy contribution is 0.85 <em>f</em><sub>n</sub>, which is closed to the <em>f</em><sub>DVR</sub>, and no frequency aliasing existed. POD modes 1, 2, and 5, along with all DMD modes except mode 5, significantly impact the flow field. Pressure contour of the DMD mode 3 is similar to the POD mode 1 and 2, suggesting a link to the DVR. Additionally, the time evolution of DMD mode 3, extracted at different moments, reveals that it characterizes the spinning process of the DVR. This study provides new insights to the DVR and offers a reference for achieving more stable PSPS operation.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"128 ","pages":"Article 117144"},"PeriodicalIF":8.9,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144134991","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

Ultra-thin Zn with preferential crystal plane for aqueous zinc-metal batteries 具有优先晶面的超薄锌水溶液锌金属电池

IF 8.9 2区工程技术

Journal of energy storage Pub Date : 2025-05-26 DOI: 10.1016/j.est.2025.117188

Yin Lin , Xuan Li , Yao Yang, Xueliang Zhang, Yajuan Li

{"title":"Ultra-thin Zn with preferential crystal plane for aqueous zinc-metal batteries","authors":"Yin Lin , Xuan Li , Yao Yang, Xueliang Zhang, Yajuan Li","doi":"10.1016/j.est.2025.117188","DOIUrl":"10.1016/j.est.2025.117188","url":null,"abstract":"<div><div>Dendrite growth, corrosion and side reactions have always been stumbling blocks for the commercialization of aqueous zinc-metal batteries. In order to carry forward the advantages of low-budget of aqueous zinc-metal batteries (AZMBs), it is necessary to improve the utilization rate of Zn anode, that is, to modify the thinnest possible Zn anode to enhance its cycling performance. To address this goal, the ultrathin (20 μm) zinc foil was modified by acid etching with sulfamic acid. The Zn anode prepared by this method has the improved wettability between the electrode and the electrolyte, which facilitates the transport of zinc ions across the interface. In addition, this method can significantly improve the ratio of I <sub>(002)</sub> /I <sub>(100)</sub> on the surface of Zn anode, which can induce zinc ions to deposit along the horizontal direction and greatly reduce the anomalous formation of zinc dendrites. It is demonstrated that SAZ@Zn//SAZ@Zn symmetric cell stably cycles for 2428 h at a current density of 1 mA cm<sup>-2</sup>, and the SAZ@Zn//K<sub>0.54</sub>V<sub>2</sub>O<sub>5</sub> full cell maintains a high discharge specific capacity of 205.1 mAh g<sup>-1</sup> after 2340 cycles at a large current density of 5 A g<sup>-1</sup>. More importantly, the SAZ@Zn//K<sub>0.54</sub>V<sub>2</sub>O<sub>5</sub> pouch cell maintains 96.5 % capacity retention rate (relative to the initial capacity) at a current of 5 A g<sup>-1</sup> for 1500 cycles. The outstanding performance of the strategy indicates that the ultra-thin Zn anode has an important application in the energy storage of AZMBs.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"128 ","pages":"Article 117188"},"PeriodicalIF":8.9,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144139741","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

Experimental study on heat transfer performance of latent heat storage system with phase change material coupled with 3-D finned tube 相变材料耦合三维翅片管潜热储热系统换热性能实验研究

IF 8.9 2区工程技术

Journal of energy storage Pub Date : 2025-05-26 DOI: 10.1016/j.est.2025.117158

Fu-Hao Zhu, Min Cheng, Yu-song Zhou, Yu-dong Ding, Xun Zhu, Qiang Liao

{"title":"Experimental study on heat transfer performance of latent heat storage system with phase change material coupled with 3-D finned tube","authors":"Fu-Hao Zhu, Min Cheng, Yu-song Zhou, Yu-dong Ding, Xun Zhu, Qiang Liao","doi":"10.1016/j.est.2025.117158","DOIUrl":"10.1016/j.est.2025.117158","url":null,"abstract":"<div><div>Latent heat thermal energy storage (LHTES) technologies have demonstrated great potential in improving the efficiency of low-grade thermal energy recovery, particularly in industrial waste heat applications. However, enhancing the rate of heat storage remains a crucial factor in determining its broader application and development. This study investigates the heat transfer characteristics of a three-dimensional (3-D) finned tube LHTES integrated with phase change material (PCM). The 3-D finned tube coupled with PCM demonstrates superior thermal storage performance compared to the smooth tube-PCM configuration, thus effectively improving the low heat transfer rate problem which limits the broader application of LHTES. Specifically, the 3-D finned tube LHTES achieves a maximum power density of 19.56 kW/m<sup>3</sup>, which is 3.47 times greater than that of the smooth tube LHTES. The influence of various design parameters—including fin height, fin width, axial fin spacing, and circumferential fin spacing—on the power density of the heat storage unit is examined in detail using orthogonal design and Taguchi's experimental method. The results indicate that fin height contributes the most to the power density, accounting for 34.31 %. Optimal parameter combinations for the 3-D finned configuration, within the experimental range, were identified and tested under varying inlet conditions. These findings offer valuable insights for the design and optimization of high-efficiency 3-D finned tube LHTES.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"128 ","pages":"Article 117158"},"PeriodicalIF":8.9,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144139742","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

Constructing a high ion conductivity artificial SEI on biomass derived hard carbon for sodium ion battery 基于生物质衍生硬碳制备高离子导电性人工SEI用于钠离子电池

IF 8.9 2区工程技术

Journal of energy storage Pub Date : 2025-05-25 DOI: 10.1016/j.est.2025.117167

Yan Ji , Zhiqing Ge , Huali Zhu , Junfei Duan , Yanxia Wang , Yanling Gu , Zhaoyong Chen

{"title":"Constructing a high ion conductivity artificial SEI on biomass derived hard carbon for sodium ion battery","authors":"Yan Ji , Zhiqing Ge , Huali Zhu , Junfei Duan , Yanxia Wang , Yanling Gu , Zhaoyong Chen","doi":"10.1016/j.est.2025.117167","DOIUrl":"10.1016/j.est.2025.117167","url":null,"abstract":"<div><div>Constructing an artificial SEI on a hard carbon surface effectively enhances initial coulombic efficiency (ICE) and cycling stability. A polymer electrolyte binder containing sodium ions (SPEB), consisting of PAAS and PEO, is designed using a straightforward method. A high ion conductivity artificial SEI is constructed on a pomelo peel-derived hard carbon (PHC) surface through esterification and hydrogen bonding. In hard carbon anodes for sodium ion batteries (SIBs), SPEB plays a crucial role by facilitating pre-sodiation in PHC, enhancing ion conductivity, and guiding the construction of a NaF-rich, ultra-thin, and stable SEI. The synthesized PHC possesses an outstanding reversible specific capacity of 375.13 mAh·g<sup>−1</sup>, a superior ICE of 90.94 %, good rate capability, and excellent cycle stability. After 400 cycles at 0.9 A·g<sup>−1</sup>, it retains 152.52 mAh·g<sup>−1</sup> with almost no decay. Meanwhile, SPEB demonstrates an exciting performance in other hard carbons and helps its commercialization application in SIBs.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"127 ","pages":"Article 117167"},"PeriodicalIF":8.9,"publicationDate":"2025-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144134639","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

Round-trip information timeliness based energy storage control for cyber-physical integrated multi-energy system 基于双向信息时效性的信息物理集成多能系统储能控制

IF 8.9 2区工程技术

Journal of energy storage Pub Date : 2025-05-24 DOI: 10.1016/j.est.2025.116881

Haijun Liao , Hongshuo Zhang , Wenxuan Che , Ziming Li , Wen Zhou , Zhenyu Zhou , Muhammad Tariq

{"title":"Round-trip information timeliness based energy storage control for cyber-physical integrated multi-energy system","authors":"Haijun Liao , Hongshuo Zhang , Wenxuan Che , Ziming Li , Wen Zhou , Zhenyu Zhou , Muhammad Tariq","doi":"10.1016/j.est.2025.116881","DOIUrl":"10.1016/j.est.2025.116881","url":null,"abstract":"<div><div>The cyber–physical integrated multi-energy system (MES) with energy storage plays an essential supporting role in achieving low-carbon operation of distribution grid. Distributed consensus optimization is the core principle to facilitate cost-efficient operation of MES under the volatility of renewable energy output and load. However, the economic control of cyber–physical integrated MES neglects the close coupling between the physical-domain control stability and cyber-domain information interaction timeliness. Meanwhile, there lacks a timeliness model reflecting the timeliness loss in the round-trip information interaction among multi-energy subsystems, and a consensus optimization method considering the round-trip information timeliness and multi-energy subsystem influences, thereby weaking control stability and convergence performance. Thus, a round-trip timeliness model for cyber-domain MES is developed, and a cyber–physical integrated MES control problem is constructed to minimize the total control cost by jointly optimizing cyber-domain interaction sequence, physical-domain consensus variable weights, and multi-energy subsystem output power. A round-trip timeliness minimization-driven control algorithm for cyber–physical integrated MES is proposed. In the offline phase, K-means and radial basis function are used to fit the influence of MESs. In the online phase, a low-complexity externality matching algorithm is proposed to optimize the interaction sequence and adjust the consensus variable update process to improve information timeliness and control economy. Simulation results demonstrate that the proposed algorithm has superior performances in economic control of MES and convergence speed.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"127 ","pages":"Article 116881"},"PeriodicalIF":8.9,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144124121","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