Pavithra Siddu, Sree Raj K A, Sithara Radhakrishnan, Sang Mun Jeong, Chandra Sekhar Rout
{"title":"Cover Feature: 3D Ternary Hybrid of VSe2/e-MXene/CNT with a Promising Energy Storage Performance for High Performance Asymmetric Supercapacitor (Batteries & Supercaps 1/2025)","authors":"Pavithra Siddu, Sree Raj K A, Sithara Radhakrishnan, Sang Mun Jeong, Chandra Sekhar Rout","doi":"10.1002/batt.202580103","DOIUrl":"https://doi.org/10.1002/batt.202580103","url":null,"abstract":"<p><b>The Cover Feature</b> represents the application of MXene-based ternary hybrids to supercapacitors due to their better physicochemical properties, including high conductivity, expansive surface area, and abundant redox-active sites. The 3D ternary hybrid structure was engineered by combining metallic VSe₂, Ti₃C₂Tx MXene, and carbon nanotubes to overcome the limitations typically encountered with 2D-material-based electrodes in supercapacitor applications. More information can be found in the Research Article by S. M. Jeong, C. S. Rout and co-workers (DOI: 10.1002/batt.202400466).\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure>\u0000 </p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"8 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/batt.202580103","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143115338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mohamed M. Elnagar, Hagar K. Hassan, Ludwig A. Kibler, Timo Jacob
{"title":"Cover Picture: Effect of Chloride Ions on the Electrochemical Performance of Magnesium Metal-Organic-Frameworks-Based Semi-Solid Electrolytes (Batteries & Supercaps 1/2025)","authors":"Mohamed M. Elnagar, Hagar K. Hassan, Ludwig A. Kibler, Timo Jacob","doi":"10.1002/batt.202580101","DOIUrl":"https://doi.org/10.1002/batt.202580101","url":null,"abstract":"<p><b>The Front Cover</b> illustrates the impact of chloride ions on magnesium deposition/dissolution on copper electrodes by using a semi-solid electrolyte based on a metal–organic framework. Chloride ions enhance magnesium dissolution, dissolving the copper surface and forming active sites for magnesium deposition. Galvanostatic cycling induces pitting corrosion and nanoparticle formation. More information can be found in the Research Article by H. K. Hassan, T. Jacob and co-workers (DOI: 10.1002/batt.202400420).\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure>\u0000 </p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"8 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/batt.202580101","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143115336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sebastian Klick, Hendrik Laufen, Moritz Schütte, Bowen Qian, Katharina Lilith Quade, Dr. Christiane Rahe, Dr. Matthieu Dubarry, Prof. Dirk Uwe Sauer
{"title":"Failure Mode and Degradation Analysis of a Commercial Sodium-Ion Battery With Severe Gassing Issue","authors":"Sebastian Klick, Hendrik Laufen, Moritz Schütte, Bowen Qian, Katharina Lilith Quade, Dr. Christiane Rahe, Dr. Matthieu Dubarry, Prof. Dirk Uwe Sauer","doi":"10.1002/batt.202400546","DOIUrl":"https://doi.org/10.1002/batt.202400546","url":null,"abstract":"<p>Sodium-ion batteries offer a promising alternative to lithium-ion batteries by addressing ecological and economic challenges. However, to assess the applicability of these cells for different sectors, understanding aging behavior, including degradation modes, is crucial. This work presents a comprehensive aging analysis of 67 commercial sodium-ion batteries under various temperatures, C-rates, and depths of discharge. We analyzed the initial cell-to-cell variance and the aging trajectories regarding capacity fade and resistance increase. We demonstrated that the cycling rate does not significantly influence the aging trajectories, whereas smaller depths of discharge significantly reduce degradation. The degradation gradients for 25 °C and 40 °C were similar; for −10 °C, we observed rapid capacity fading that can be attributed to irreversible sodium plating. Furthermore, we identified the degradation modes for four different aging categories. Since some aging tests stopped due to gas-induced current interrupt device triggering at low current rates and states of charge, we proposed two hypotheses for the gassing under specific conditions, suggesting inadequate gas consumption in cathode-electrolyte side reactions or solid electrolyte interphase instability as potential causes. Overall, this work provides a valuable in-depth analysis of the aging behavior of a commercial sodium-ion battery as a function of temperature, C-rate, and depth of discharge, with data made available for further research.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"8 4","pages":""},"PeriodicalIF":5.1,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/batt.202400546","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143826719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Influence of Electrolyte on the Electrochemical Performance of the Biomass-Derived Hard Carbon for Potassium Ion Batteries","authors":"Raghunath Sahoo, Subramanian Venkatachalam, Ramaprabhu Sundara","doi":"10.1002/batt.202400682","DOIUrl":"https://doi.org/10.1002/batt.202400682","url":null,"abstract":"<p>There is a promising aspect of potassium-ion batteries (KIB) alternative to lithium-ion batteries (LIB) due to a similar charge storage mechanism. However, the major hurdles, such as higher volume pulverization during continuous cycling, lower Coulombic efficiency, and subsequent fading, need to be addressed before the commercialization of KIB. In this regard, the choice of electrolytes and their impact on the electrochemical performance of the electrode is quite crucial. Here, a two-step pyrolysis method was used to synthesize hard coconut shell-derived hard carbon (HHC). The synthesized powder was characterized by various analytical techniques to confirm the formation of pyrolyzed carbon. The surface area of the synthesized powder was calculated to be around 40.9 m<sup>2</sup>.g<sup>−1</sup>. Three types of electrolytes such as 1 M KPF<sub>6</sub> in EC: DEC (1 : 1 v/v), 0.8 M KPF<sub>6</sub> in EC: DEC (1 : 1 v/v), and 1 M KTFSI in TEGDME, were prepared to study the electrochemical performance of the assembled KIB cell. The study demonstrated that compared to other electrolytes, 0.8 M KPF<sub>6</sub> in EC: DEC (1 : 1 v/v) exhibited higher coulombic efficiency, higher charge storage capacity, and much better capacity retention. The EIS studies revealed that a lower solution resistance and a higher pseudo capacitance have aided in better electrochemical performance for 0.8 M KPF<sub>6</sub> in EC: DEC (1 : 1 v/v) electrolyte. The cell exhibited a higher specific capacity of 187.3 mAh g<sup>−1</sup> at a current density of 200 mA g<sup>−1</sup> with a higher coulombic efficiency of 96.8 % and retained about 86.7 % of the original capacity after 100 cycles of charge-discharge. This promising combination of appropriate electrolytes and electrodes can further advance the research progress of potassium ion batteries.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"8 6","pages":""},"PeriodicalIF":5.1,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144339103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jie Lei, Shenglong Li, Yanchen Liu, Taoxiang Wang, Jin Li, Minghui Gu, Hengjian Pu, Kang Li, Prof. Teng Zhai, Hui Chen, Prof. Hui Xia
{"title":"Unveiling the Adsorption-Desorption Mechanism in Phosphorus-Doped Activated Carbon for Enhanced Double-Layer Pouch-Cell Supercapacitors","authors":"Jie Lei, Shenglong Li, Yanchen Liu, Taoxiang Wang, Jin Li, Minghui Gu, Hengjian Pu, Kang Li, Prof. Teng Zhai, Hui Chen, Prof. Hui Xia","doi":"10.1002/batt.202400730","DOIUrl":"https://doi.org/10.1002/batt.202400730","url":null,"abstract":"<p>Activated carbon (AC) suffers from low energy density in the organic system of electric double-layer capacitors (EDLCs). Currently, the research spotlight for enhancing the specific capacitance of AC in EDLC is to optimize the pore size distribution and enhance the specific surface area, but the increase of porosity in turn decreases the conductivity of AC. The surface modification is an effective strategy to improve the surface properties of carbon electrodes and enhance electrochemical performance. However, little attention has been paid to the interaction between AC surface and organic electrolyte. In this work, we have developed a phosphorus doping aimed at modulation of adsorption/desorption dynamics of organic electrolytes on the AC electrode. It was found that the phosphorus-carbon bonding increases the adsorbed amounts of TEA<sup>+</sup>/BF<sub>4</sub><sup>−</sup> per unit surface area, altering the charge storage mechanism and leading to improved specific capacitance. Furthermore, we fabricated a symmetrical pouch-cell supercapacitor with an energy density of 36.2 Wh kg<sup>−1</sup>. The capacitance retention of 93.7 % was maintained after 30,000 cycles at a current density of 10 A g<sup>−1</sup>. These findings significantly advance our understanding of the charge storage dynamics in phosphorus-doped AC and will guide the design of improved carbon-based supercapacitors.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"8 7","pages":""},"PeriodicalIF":5.1,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144635558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jaka Sivavec, Julian F. Baumgärtner, Dragos C. Stoian, Matthias Klimpel, Wouter van Beek, Maksym V. Kovalenko, Kostiantyn V. Kravchyk
{"title":"On the Feasibility of Pairing Pyrochlore Iron(III) Hydroxy Fluoride Cathode with Argyrodite Li6PS5Cl Solid-State Electrolyte for Low-Cost All-Solid-State Batteries","authors":"Jaka Sivavec, Julian F. Baumgärtner, Dragos C. Stoian, Matthias Klimpel, Wouter van Beek, Maksym V. Kovalenko, Kostiantyn V. Kravchyk","doi":"10.1002/batt.202400731","DOIUrl":"https://doi.org/10.1002/batt.202400731","url":null,"abstract":"<p>As demand for low-cost, high-energy-density all-solid-state batteries continues to rise, exploring novel cathodes composed of earth-abundant elements is imperative. Iron hydroxy fluorides with the pyrochlore structure (Pyr-IHF) emerge as compelling cathode materials due to abundant natural reserves of their constituent elements, high energy density, and rate capability. In this work, we explore the viability of Pyr-IHF as a cathode material in all-solid-state batteries when paired with argyrodite-type Li<sub>6</sub>PS<sub>5</sub>Cl (LPSCl) solid-state electrolyte. Our findings show that the Pyr-IHF/LPSCl cathode delivers a high initial charge capacity of 172 mAh g<sup>−1</sup> at a 0.1 C rate, with <i>ca</i>. 65 % capacity retention after 50 cycles. Advanced characterization techniques, including focused ion beam-scanning electron microscopy, scanning electron microscopy coupled with energy dispersive X-ray spectroscopy, and X-ray absorption spectroscopy, indicate a pronounced redox reaction between Pyr-IHF and LPSCl upon cell preparation, resulting in significant capacity contributions from the sulfur redox of LPSCl decomposition products during electrochemical cycling.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"8 7","pages":""},"PeriodicalIF":5.1,"publicationDate":"2025-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/batt.202400731","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144635449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Arpita Das, Mohammed Riyaz, Dr. Sushobhan Kobi, Dipannita Saha, Prof. Amartya Mukhopadhyay
{"title":"Ethylene Carbonate Free Sulfone-Based Electrolyte for Enabling Superior Performance of High Ni-containing Li-Transition Metal Oxide Cathodes at High Voltage and High Temperature","authors":"Arpita Das, Mohammed Riyaz, Dr. Sushobhan Kobi, Dipannita Saha, Prof. Amartya Mukhopadhyay","doi":"10.1002/batt.202400608","DOIUrl":"https://doi.org/10.1002/batt.202400608","url":null,"abstract":"<p>The present study introduces an ethylene carbonate (EC) free electrolyte, composed of 1 M LiPF<sub>6</sub> in ethyl methyl sulfone (EMS) and dimethyl carbonate (DMC) (3 : 7 by volume), for Li-ion batteries, which is better suited for usage with higher upper cut-off potentials, with high Ni-containing ‘layered’ Li- transition metal oxide cathodes (like Li−NMC811), and at elevated temperature. The as-designed and developed sulfone-based electrolyte exhibits superior anodic stability and lower electrolyte resistance, while suppressing the decomposition of LiPF<sub>6</sub> and facilitating the formation of a S-containing, more passivating, thinner and uniform CEI layer on Li−NMC811, despite the usage of a high upper cut-off potential of 4.5 V (vs. Li/Li<sup>+</sup>). Compared with conventional EC-based electrolyte, the sulfone-based electrolyte results in notably suppressed rise in impedance and improved cyclic-stability, with capacity retentions of ~87 % (vs. ~78 % for EC-based electrolyte) after 50 cycles @ C/10 at room temperature (going up to 4.5 V). Even at 45 °C, the sulfone-based electrolyte results in significantly higher initial Coulombic efficiency (<i>viz</i>., >80 % vs. ~40 %), higher reversible capacity (~230 mAh/g vs. ~178 mAh/g) and superior cyclic stability (~74 % vs. ~46 % retention after 50 cycles @ C/10); thus, revealing its superiority for usage at elevated temperature.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"8 5","pages":""},"PeriodicalIF":5.1,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144100504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ting Ma, Yibo Xiao, Xiaoxia Lv, Haixia Yue, Yaxin Huang, Xin Li, Na He, Changzhen Zhan, Yu Bai, Ding Nan
{"title":"Functional Carbon Interlayer with Indium Oxide-Rich Nanoparticles for High-Performance Lithium–Sulfur Batteries","authors":"Ting Ma, Yibo Xiao, Xiaoxia Lv, Haixia Yue, Yaxin Huang, Xin Li, Na He, Changzhen Zhan, Yu Bai, Ding Nan","doi":"10.1002/batt.202400726","DOIUrl":"https://doi.org/10.1002/batt.202400726","url":null,"abstract":"<p>Lithium–sulfur batteries are gaining a lot of attention from researchers due to their high energy density, high theoretical specific capacity, and low raw material prices. Nevertheless, the dissolution and diffusion of certain polysulfides during charge and discharge cycles result in a shuttle effect, while reduced sulfur utilization remains a barrier to their commercial viability. In this study, we propose the use of carbon nanofibers enriched with indium oxide nanoparticles (be called In<sub>2</sub>O<sub>3</sub>@CNF) as a functional interlayer for lithium–sulfur batteries. The interlayer of this innovation serves a dual purpose. Indium oxide nanoparticles can adsorb polysulfide to inhibit the shuttle effect, and accelerate the catalytic transformation of polysulfide to enhance the reaction kinetics. As a result, the electrochemical performance of the battery with the In<sub>2</sub>O<sub>3</sub>@CNF interlayer exhibited remarkable improvements. The initial discharge capacity was 1187 mAh g<sup>−1</sup> at 0.2 C and the capacity retention was 77.5 % after 100 cycles. Furthermore, even at a higher current density of 1 C, the battery demonstrated a substantial initial capacity of 997 mAh g<sup>−1</sup>, maintaining a capacity retention of 589 mAh g<sup>−1</sup> after 400 cycles. Notably, the battery exhibited stable Coulombic efficiency (CE) and minimal single-cycle capacity decay (0.1 %).</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"8 7","pages":""},"PeriodicalIF":5.1,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144635029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Mitigating the Effect of High Overpotential during Al Deposition on Aluminium-Graphite Battery Performance","authors":"Charan Mukundan, Dr. Jean-Francois Drillet","doi":"10.1002/batt.202400718","DOIUrl":"https://doi.org/10.1002/batt.202400718","url":null,"abstract":"<p>This study investigates the impact of current density on electrode potential during aluminium (Al) dissolution/deposition step from/on an Al foil as well as the charge-discharge behaviour of aluminium-graphite batteries (AGB) in various AlCl<sub>3</sub>-based electrolytes. Preliminary experiments in a cell with graphite blocking electrodes evidenced higher chemical stability of 1 : 1.5 Urea : AlCl<sub>3</sub> electrolyte, followed by 1 : 1.5 TEA : AlCl<sub>3</sub> and 1 : 1.5 EMIMCl : AlCl<sub>3</sub>. In Al−Al symmetric cells, current densities above 1 mA cm<sup>−2</sup> led to a notable rise in overpotential up to 100 mV during Al deposition in both TEA : AlCl<sub>3</sub> and Urea : AlCl<sub>3</sub> electrolytes mostly due to low surface area of native Al foil. Similar trend was observed in AGB full cells, where higher overpotentials during Al deposition caused ‘incomplete’ AlCl₄<sup>−</sup> intercalation in natural graphite (NG), resulting in capacity fade at current densities in the range between 0.5 and 5 A g<sup>−1</sup>. By adjusting the upper cut-off voltage (UCV) during charging step as a function of applied current value according to respective electrolyte stability, a significant improvement in specific capacity and energy density was achieved during charging and discharging steps. For instance at 1 A g<sup>−1</sup>, the specific energy density of AGB increased by 10 % in EMIMCl : AlCl<sub>3</sub>, 48 % in TEA : AlCl<sub>3</sub>, and an impressive 250 % in Urea : AlCl<sub>3</sub>.During long-term cycling post-UCV adjustment, the capacities of AGB increased by 10 %, 13 %, and 27 % for AGBs with EMIMCl : AlCl<sub>3</sub>, TEA : AlCl<sub>3</sub> and Urea : AlCl<sub>3</sub>, respectively with a negligible capacity fade of less than 1 % for EMIMCl : AlCl<sub>3</sub> and TEA : AlCl<sub>3</sub>, and a 9 % capacity fade for Urea : AlCl<sub>3</sub>.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"8 7","pages":""},"PeriodicalIF":5.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/batt.202400718","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144635120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mengyao Wang, Guang Yang, Chunyu Sun, Yuchao Wu, Xinyuan Jiang, Prof. Lubin Ni, Prof. Guowang Diao, Prof. Yongge Wei
{"title":"Cesium Phosphotungstate Salt Nanospheres Coated on a 3D Graphene Framework for Lithium Ion Batteries","authors":"Mengyao Wang, Guang Yang, Chunyu Sun, Yuchao Wu, Xinyuan Jiang, Prof. Lubin Ni, Prof. Guowang Diao, Prof. Yongge Wei","doi":"10.1002/batt.202400711","DOIUrl":"https://doi.org/10.1002/batt.202400711","url":null,"abstract":"<p>Traditional cathode materials for lithium-insertion compounds, such as LiCoO<sub>2</sub>, LiMn<sub>2</sub>O<sub>4</sub>, LiNiO<sub>2</sub>, and LiFePO<sub>4</sub>, have been highly successful, but they face severe limitations in terms of energy density and production cost associated with their usage. Therefore, the design of next-generation energy storage devices, such as molecular cluster batteries, is an important and hot topic in current research. While polyoxometalates have been developed for battery components for several years, common POMs, including H<sub>3</sub>PW<sub>12</sub>O<sub>40</sub>, tend to form heteropoly blues that dissolve in the electrolyte during charging and discharging processes. Hence, finding a polyoxometalates that is less soluble in electrolyte and exhibits certain electrical properties is particularly crucial for lithium-ion battery cathodes. Here, we report the synthesis of zero-dimensional Cs<sub>3</sub>PW<sub>12</sub>O<sub>40</sub> nanospheres, followed by the successful embedding of Cs<sub>3</sub>PW<sub>12</sub>O<sub>40</sub> nanospheres into three-dimensional graphene sponge, constructing a novel hybrid material of three-dimensional graphene@polyoxometalate (rGO@Cs<sub>3</sub>PW<sub>12</sub>O<sub>40</sub>) as a new cathode material for LIBs. The prepared rGO@Cs<sub>3</sub>PW<sub>12</sub>O<sub>40</sub> half-cell hybrid exhibits excellent electrochemical performance, with high specific capacity (approximately 240 mAh g<sup>−1</sup> at 50 mA g<sup>−1</sup>), outstanding rate capability (95 mAh g<sup>−1</sup> at 2 A g<sup>−1</sup>), and exceptional cycling stability (700 cycles at 1 A g<sup>−1</sup>). This study provides a new perspective on the application of polyoxometalates in lithium-ion batteries.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"8 6","pages":""},"PeriodicalIF":5.1,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144339494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}