{"title":"A High-Energy and High-Safety Bisolvent-in-Salt Semisolid Flow Battery","authors":"Xinyi Zou, Pei Zhou, Yangjun Xie, Hongning Chen","doi":"10.1002/batt.70233","DOIUrl":"https://doi.org/10.1002/batt.70233","url":null,"abstract":"<p>Semisolid flow batteries (SSFBs) represent an innovative approach to boosting the energy density by breaking the solubility constraint of active materials. Currently, nonaqueous SSFBs pose safety risks due to the flammability of organic electrolytes, while aqueous SSFBs impede the attainment of high-voltage owing to the limited electrochemical stability window. In this study, a novel SSFB employing the bisolvent-in-salt (BSiS) electrolyte is innovatively developed. LiMn<sub>2</sub>O<sub>4</sub> (LMO) and selenium (Se) are adopted as catholyte and anolyte active materials respectively in the 10 M LiTFSI BSiS electrolyte (H<sub>2</sub>O:1,3-dioxolane (DOL) = 1:1, BSiS-DOL<sub>0.5</sub>) to demonstrate this concept. The BSiS-DOL<sub>0.5</sub> SSFB exhibits superior safety and low temperature performance as evidenced by the evaluation of flame retardancy and low temperature resistance. The proposed SSFB can operate at ~1.8 V, exhibiting an average capacity degradation rate of only 0.37% and a Coulombic efficiency of 93% over 100 cycles, alongside an energy density of 144 Wh L<sup>−1</sup>. Finally, the continuous-flow mode test is conducted to verify the feasibility of Se/LMO BSiS SSFBs for over 210 h. This study illustrates the application conditions of BSiS electrolytes in SSFBs and reveals the formation mechanism of active material-electrolyte interface, which provides a significant pathway for the design of novel high-safety and high-energy SSFBs.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 3","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147567154","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}
Harishchandra S. Nishad, Rajesh R. Jaiswar, Sagar Mane, Jaewoong Lee, Pravin S. Walke
{"title":"Morphology Tuning of Ni3O6/Co3O4 Donut Nanostructure as High-Performance Positive Electrode for Aqueous Hybrid Supercapacitor","authors":"Harishchandra S. Nishad, Rajesh R. Jaiswar, Sagar Mane, Jaewoong Lee, Pravin S. Walke","doi":"10.1002/batt.202500908","DOIUrl":"https://doi.org/10.1002/batt.202500908","url":null,"abstract":"<p>Hybrid supercapacitors (HSs) have a great potential to bridge the gap between battery and supercapacitor by offering high energy density and power simultaneously. It is highly crucial to design appropriate battery-type electrode materials for HSs to deliver both high capacity and fast charge-discharge performance. We report the facile route and rapid preparation technique of bimetallic oxide Ni<sub>3</sub>O<sub>6</sub>/Co<sub>3</sub>O<sub>4</sub> (CNO) nanocomposite with a unique donut-like morphology by simple one-step wet chemical methods. Further, the donut-like morphology was fine-tuned by changing the urea concentration of 5 mmol (CNO-1), 10 mmol (CNO-2), and 20 mmol (CNO-3) without compromising the hexagonal (Ni<sub>3</sub>O<sub>6</sub>)/cubic (Co<sub>3</sub>O<sub>4</sub>) crystal structure of all samples. Moreover, the three-electrode measurements exhibit specific capacitances of 219, 284, and 231 F g<sup>−1</sup> at 0.5 A g<sup>−1</sup> for CNO-1, CNO-2, and CNO-3, respectively. Furthermore, a HS device delivers a specific capacitance of 120 F g<sup>−1</sup> at 1 A g<sup>−1</sup>, along with an energy density of 47 W h kg<sup>−1</sup> and a power density of 8500 W kg<sup>−1</sup>. It maintains 72% capacitance retention and excellent coulombic efficiency of 99% up to 5000 cycles, signifying stable long-term performance. Hence, this work demonstrates an effective and scalable strategy for tailoring the morphology of bimetallic oxide nanocomposites for advanced aqueous HSs.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 3","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147567110","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}
Nick Fehlings, Matthias Weiling, Jakob Hesper, Maximilian Kubot, Martin Winter, Simon Wiemers-Meyer, Sascha Nowak
{"title":"Front Cover: Investigation of Degradation Pathways in Fluoroethylene Carbonate Based Electrolytes via Chromatographic Techniques (Batteries & Supercaps 3/2026)","authors":"Nick Fehlings, Matthias Weiling, Jakob Hesper, Maximilian Kubot, Martin Winter, Simon Wiemers-Meyer, Sascha Nowak","doi":"10.1002/batt.70273","DOIUrl":"https://doi.org/10.1002/batt.70273","url":null,"abstract":"<p><b>The Front Cover</b> shows electrolyte characterizations after varying FEC and EC content in the electrolyte, including the replacement of EC by FEC, as well as the influence of different upper cut-off voltages (4.5 and 4.2 V). Depending on the composition and concentration of the additive, different degradations and cycling performance were observed. More information can be found in the Research Article by S. Nowak and co-workers (DOI: 10.1002/batt.202500610).\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 3","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/batt.70273","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147567106","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}
Syed Fahad Bin Haque, John P. Ferraris, Kenneth J. Balkus Jr.
{"title":"Fulleroid-Containing Carbon-Only Composite for High-Performance Hybrid Supercapacitors","authors":"Syed Fahad Bin Haque, John P. Ferraris, Kenneth J. Balkus Jr.","doi":"10.1002/batt.202500894","DOIUrl":"https://doi.org/10.1002/batt.202500894","url":null,"abstract":"<p>As the global pursuit of efficient and sustainable energy storage solutions intensifies alongside the transition to renewable energy sources and the evolution of electrified transportation systems, hybrid supercapacitors have emerged as promising candidates. Supercapacitors address the requirements of high power density and enhanced energy density storage. This study describes polyacrylonitrile (PAN), poly(methyl methacrylate) (PMMA), and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) composites for hybrid supercapacitor electrodes. Synthesized via electrospinning, stabilization, carbonization, and CO<sub>2</sub> activation, the freestanding electrodes were characterized by cyclic voltammetry, galvanostatic charge–discharge (GCD), electrochemical impedance spectroscopy, and cycling stability tests, as well as physical and chemical characterizations. The results show promising performance, with the PAN/PMMA/PCBM electrodes achieving an energy density of up to 89.2 Wh/kg and a specific capacitance of up to 209 F/g at a current density of 1 A/g in GCD experiments. These findings highlight the potential of PCBM for efficient energy storage and offer valuable insights into advancing sustainable energy storage systems to meet the evolving demands of modern energy applications.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 3","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147567109","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}
Hangchen Qu, Wei Dong, Zhenfei Chang, Chu Wang, Zibo Xu, Yingguang Zhang, Sarah K. W. Leong, Dennis Y. C. Leung, Mingqiang Liu, Yug Joshi, Ming Dong, Wending Pan
{"title":"Recent Advances in Magnesium Battery Chemistry: Electrolyte–Electrolyte-Derived Active Ion Species as the Key to Interfacial Performance","authors":"Hangchen Qu, Wei Dong, Zhenfei Chang, Chu Wang, Zibo Xu, Yingguang Zhang, Sarah K. W. Leong, Dennis Y. C. Leung, Mingqiang Liu, Yug Joshi, Ming Dong, Wending Pan","doi":"10.1002/batt.202500756","DOIUrl":"https://doi.org/10.1002/batt.202500756","url":null,"abstract":"<p>Rechargeable magnesium-ion batteries (MIBs) have garnered significant attention due to their high theoretical energy density and favorable safety profiles. However, their practical application is still hindered by critical interfacial challenges, i.e., passivation of the magnesium metal anode and sluggish Mg<sup>2+</sup> intercalation kinetics in the cathode. Fundamentally, these issues stem from the substantial differences in chemical properties of active ion species (e.g., [MgCl]<sup>+</sup>, [Mg·solvent<sub><i>n</i></sub>]<sup>2+</sup>) across various electrolyte systems, which directly govern the Mg migration capability within electrode, alternating the deposition/intercalation reactions. This review systematically summarizes the mechanisms by which characteristic ion components in diverse electrolytes (i.e., Cl-containing complexes, weakly coordinating anion electrolytes, aqueous electrolytes, and emerging solid-state systems) regulate the thermodynamics and kinetics of interfacial reactions at both the anode and cathode. This review critically deconstructs the persistent gap between the practical performance of Mg-ion batteries and their theoretical targets of >2.5 V and 300 mAh g<sup>−1</sup>. Moving beyond a simple catalog of advances, we diagnose the fundamental electrochemical hurdles and propose targeted electrolyte and interfacial engineering strategies as synergistic solutions. Moreover, we advocate for standardized testing to build reliable data. Overall, this review links diagnostics with solutions to guide the rational design of high-performance MIBs.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 3","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147569932","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":"A Comparative Review of Wet and Dry Electrode Manufacturing Processes: Opportunities, Limitations, and Challenges in the Production of Lithium-Ion Battery Electrodes","authors":"Shoayb Mojtahedi, Francesca Soavi","doi":"10.1002/batt.202500929","DOIUrl":"https://doi.org/10.1002/batt.202500929","url":null,"abstract":"<p>The rising demand for lithium-ion batteries (LIBs) highlights the importance of developing electrode fabrication methods that ensure high performance, cost efficiency, and environmental sustainability. Here, wet (slurry-based) and dry (solvent-free) electrode fabrication methods are compared with a focus on both anodes and cathodes. Despite its integration within an established industrial system, the wet method exhibits significant limitations stemming from the use of volatile solvents such as N-methyl-2-pyrrolidone (NMP), the high energy demand of the drying stage, and the complexity of scaling up thick electrode manufacturing. On the other hand, dry electrode fabrication eliminates the need for solvents, reduces energy use, simplifies production workflows, and improves mechanical integrity. The latter helps in the development of high-loading electrodes for next-generation high-energy density storage systems. However, dry processing introduces new technical challenges that must first be addressed, including binder activation, uniform material dispersion, the need for specialized hardware, and the development of customized equipment. By focusing on the underlying mechanisms, advantages, and practical limitations, this review aims to support the development of optimized electrode fabrication strategies that facilitate the widespread adoption of sustainable battery technologies.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 3","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/batt.202500929","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147569934","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":"Prestressed Silicon Thin Films: Linking Stress Regulation to Electrochemical Stability","authors":"Yibo Ma, Xuanhe Wang, Jingwen Liu, Chao Feng, Kewei Liu, Lingfeng Zhu, Qi Mai, Haimei Xu, Zijun Yong, Hui Li, Zhijun Wu, Hongge Pan, Baohua Jia, Tianyi Ma, Lei Zhang","doi":"10.1002/batt.202500910","DOIUrl":"https://doi.org/10.1002/batt.202500910","url":null,"abstract":"<p>The mechanical reliability of silicon (Si) anodes is fundamentally limited by lithiation-induced stress, leading to cracking and rapid degradation. Here, magnetron-sputtered Si thin films are employed to disentangle stress evolution from electrochemical reaction dynamics. Although lithiation remains the fundamental origin of stress generation, this strategy effectively suppresses electrochemical complexities, thereby enabling a more direct and unambiguous visualization of stress–performance correlations. Designed Li–Si films show a progressive transition from compressive to tensile stress during lithiation, accompanied by surface cracking and dramatic losses in hardness and Young's modulus. By tuning sputtering pressure, the residual stress of pure Si films can be precisely controlled: low pressure generates compressive stress, high-pressure tensile stress, and graded deposition achieves a near stress-free state. The Si films with initial compressive stress exhibit enhanced cycling stability, retaining 95.8% of capacity over 11 cycles. This work establishes prestress engineering as a general strategy to mitigate lithiation-induced damage and design mechanically resilient, high-capacity Si anodes.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 3","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/batt.202500910","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147570169","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":"Prestressed Silicon Thin Films: Linking Stress Regulation to Electrochemical Stability","authors":"Yibo Ma, Xuanhe Wang, Jingwen Liu, Chao Feng, Kewei Liu, Lingfeng Zhu, Qi Mai, Haimei Xu, Zijun Yong, Hui Li, Zhijun Wu, Hongge Pan, Baohua Jia, Tianyi Ma, Lei Zhang","doi":"10.1002/batt.202500910","DOIUrl":"10.1002/batt.202500910","url":null,"abstract":"<p>The mechanical reliability of silicon (Si) anodes is fundamentally limited by lithiation-induced stress, leading to cracking and rapid degradation. Here, magnetron-sputtered Si thin films are employed to disentangle stress evolution from electrochemical reaction dynamics. Although lithiation remains the fundamental origin of stress generation, this strategy effectively suppresses electrochemical complexities, thereby enabling a more direct and unambiguous visualization of stress–performance correlations. Designed Li–Si films show a progressive transition from compressive to tensile stress during lithiation, accompanied by surface cracking and dramatic losses in hardness and Young's modulus. By tuning sputtering pressure, the residual stress of pure Si films can be precisely controlled: low pressure generates compressive stress, high-pressure tensile stress, and graded deposition achieves a near stress-free state. The Si films with initial compressive stress exhibit enhanced cycling stability, retaining 95.8% of capacity over 11 cycles. This work establishes prestress engineering as a general strategy to mitigate lithiation-induced damage and design mechanically resilient, high-capacity Si anodes.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 3","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/batt.202500910","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147569933","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}
Hangchen Qu, Wei Dong, Zhenfei Chang, Chu Wang, Zibo Xu, Yingguang Zhang, Sarah K. W. Leong, Dennis Y. C. Leung, Mingqiang Liu, Yug Joshi, Ming Dong, Wending Pan
{"title":"Recent Advances in Magnesium Battery Chemistry: Electrolyte–Electrolyte-Derived Active Ion Species as the Key to Interfacial Performance","authors":"Hangchen Qu, Wei Dong, Zhenfei Chang, Chu Wang, Zibo Xu, Yingguang Zhang, Sarah K. W. Leong, Dennis Y. C. Leung, Mingqiang Liu, Yug Joshi, Ming Dong, Wending Pan","doi":"10.1002/batt.202500756","DOIUrl":"10.1002/batt.202500756","url":null,"abstract":"<p>Rechargeable magnesium-ion batteries (MIBs) have garnered significant attention due to their high theoretical energy density and favorable safety profiles. However, their practical application is still hindered by critical interfacial challenges, i.e., passivation of the magnesium metal anode and sluggish Mg<sup>2+</sup> intercalation kinetics in the cathode. Fundamentally, these issues stem from the substantial differences in chemical properties of active ion species (e.g., [MgCl]<sup>+</sup>, [Mg·solvent<sub><i>n</i></sub>]<sup>2+</sup>) across various electrolyte systems, which directly govern the Mg migration capability within electrode, alternating the deposition/intercalation reactions. This review systematically summarizes the mechanisms by which characteristic ion components in diverse electrolytes (i.e., Cl-containing complexes, weakly coordinating anion electrolytes, aqueous electrolytes, and emerging solid-state systems) regulate the thermodynamics and kinetics of interfacial reactions at both the anode and cathode. This review critically deconstructs the persistent gap between the practical performance of Mg-ion batteries and their theoretical targets of >2.5 V and 300 mAh g<sup>−1</sup>. Moving beyond a simple catalog of advances, we diagnose the fundamental electrochemical hurdles and propose targeted electrolyte and interfacial engineering strategies as synergistic solutions. Moreover, we advocate for standardized testing to build reliable data. Overall, this review links diagnostics with solutions to guide the rational design of high-performance MIBs.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 3","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147570171","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":"A Comparative Review of Wet and Dry Electrode Manufacturing Processes: Opportunities, Limitations, and Challenges in the Production of Lithium-Ion Battery Electrodes","authors":"Shoayb Mojtahedi, Francesca Soavi","doi":"10.1002/batt.202500929","DOIUrl":"10.1002/batt.202500929","url":null,"abstract":"<p>The rising demand for lithium-ion batteries (LIBs) highlights the importance of developing electrode fabrication methods that ensure high performance, cost efficiency, and environmental sustainability. Here, wet (slurry-based) and dry (solvent-free) electrode fabrication methods are compared with a focus on both anodes and cathodes. Despite its integration within an established industrial system, the wet method exhibits significant limitations stemming from the use of volatile solvents such as N-methyl-2-pyrrolidone (NMP), the high energy demand of the drying stage, and the complexity of scaling up thick electrode manufacturing. On the other hand, dry electrode fabrication eliminates the need for solvents, reduces energy use, simplifies production workflows, and improves mechanical integrity. The latter helps in the development of high-loading electrodes for next-generation high-energy density storage systems. However, dry processing introduces new technical challenges that must first be addressed, including binder activation, uniform material dispersion, the need for specialized hardware, and the development of customized equipment. By focusing on the underlying mechanisms, advantages, and practical limitations, this review aims to support the development of optimized electrode fabrication strategies that facilitate the widespread adoption of sustainable battery technologies.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 3","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/batt.202500929","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147570170","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}