Batteries & Supercaps最新文献_第2页

Lowered Phase Transition Temperature of VO2(M) via Molybdenum Doping Toward Efficient Aqueous Zinc-Ion Batteries 钼掺杂降低VO2(M)在高效锌离子电池中的相变温度

IF 4.7 4区材料科学

Batteries & Supercaps Pub Date : 2026-04-04 Epub Date: 2025-10-24 DOI: 10.1002/batt.202500702

Selay Aydın Sahin, Busra Aydogdu, Gulsah Yaman Uzunoglu, Recep Yuksel

{"title":"Lowered Phase Transition Temperature of VO2(M) via Molybdenum Doping Toward Efficient Aqueous Zinc-Ion Batteries","authors":"Selay Aydın Sahin, Busra Aydogdu, Gulsah Yaman Uzunoglu, Recep Yuksel","doi":"10.1002/batt.202500702","DOIUrl":"10.1002/batt.202500702","url":null,"abstract":"Rechargeable aqueous zinc-ion batteries have attracted considerable attention as large-scale energy storage systems owing to their safety, sustainability, and cost-effectiveness. However, their practical application has been hindered by limited energy density, primarily determined by cathode performance. Among transition metal oxides, vanadium dioxide (VO2) is particularly appealing due to its layered structure, rich polymorphism, and ability to host Zn2+ ions reversibly. The thermally driven transition from insulating VO2(M) to conductive VO2(R) enhances charge transport through the metal–insulator transition (MIT). In this work, molybdenum doping is employed to lower the MIT temperature of VO2(M). Doping reduces the MIT temperature of the VO2(M) phase to 56.7 °C, resulting in the VO2(R) phase. Electrochemical measurements reveal that Mo-VO2(R) cathodes deliver up to ten times higher capacity than the pristine VO2(M), with 3Mo-VO2(R) reaching 404.8 mAh g–1 at 0.1 A g–1. These findings demonstrate that Mo doping serves as a practical approach to modify VO2(M) and decrease the MIT temperature, while improving electrochemical performance. Moreover, the heteroatom doping strategy suggests a promising pathway for developing other VO2 cathodes for efficient rechargeable batteries, which can leverage the heat dissipated in energy storage systems.","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 4","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147684050","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}

引用次数: 0

Na5FeS4 as High-Capacity Positive Electrode Active Material for All-Solid-State Sodium Batteries Na5FeS4作为全固态钠电池高容量正极活性材料

IF 4.7 4区材料科学

Batteries & Supercaps Pub Date : 2026-04-04 Epub Date: 2025-11-02 DOI: 10.1002/batt.202500551

Yuta Doi, Tomoya Otono, Yushi Fujita, Raku Kato, Masato Torii, Jiong Ding, Shigeo Mori, Kota Motohashi, Atsushi Sakuda, Akitoshi Hayashi

{"title":"Na5FeS4 as High-Capacity Positive Electrode Active Material for All-Solid-State Sodium Batteries","authors":"Yuta Doi, Tomoya Otono, Yushi Fujita, Raku Kato, Masato Torii, Jiong Ding, Shigeo Mori, Kota Motohashi, Atsushi Sakuda, Akitoshi Hayashi","doi":"10.1002/batt.202500551","DOIUrl":"10.1002/batt.202500551","url":null,"abstract":"Meeting the growing demand for energy storage systems requires the development of batteries that satisfy the requirements of high safety, low cost, and high energy density. All-solid-state sodium batteries with sulfide-based active materials are a promising energy storage technology because they satisfy these requirements. In particular, sodium-containing iron sulfides are attractive for positive electrode active materials because of their high capacities and ionic conductivities. In this study, Na5FeS4 is investigated as a positive electrode active material for all-solid-state sodium batteries. Na5FeS4 is synthesized by ambient-pressure heat treatment using sodium polysulfides. All-solid-state cells using Na5FeS4 as a positive electrode active material exhibit a high reversible capacity of 480 mAh g–1 at ≈25 °C. The active material mainly became amorphous during the initial charge, and this amorphous state contribute to reversible charge–discharge with high capacity. This study advances the development of low-cost and high-capacity sulfide positive electrode active materials for all-solid-state sodium batteries suitable for large-scale energy storage.","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 4","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/batt.202500551","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147683074","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}

引用次数: 0

Accelerating the Lithium Storage Kinetics of Organosulfur Copolymers with Pyridine/Selenium Dual-Doping for Lithium-Organosulfur Battery 加速吡啶/硒双掺杂有机硫共聚物在锂-有机硫电池中的锂存储动力学

IF 4.7 4区材料科学

Batteries & Supercaps Pub Date : 2026-04-04 Epub Date: 2025-11-02 DOI: 10.1002/batt.202500741

Wen-Wu Liu, Hua-Xin Shen, Bo Lv, Ya-Wen Zheng, Rong Zou

{"title":"Accelerating the Lithium Storage Kinetics of Organosulfur Copolymers with Pyridine/Selenium Dual-Doping for Lithium-Organosulfur Battery","authors":"Wen-Wu Liu, Hua-Xin Shen, Bo Lv, Ya-Wen Zheng, Rong Zou","doi":"10.1002/batt.202500741","DOIUrl":"10.1002/batt.202500741","url":null,"abstract":"Lithium-organosulfur batteries have positioned themselves at the forefront of energy storage due to high theoretical specific capacity, solid–solid reaction mechanism. In order to further decrease the shuttle effect and improve reaction kinetics, a copolymer cathode (PTSC) with short-chain sulfur (R-S4-R) is first synthesized using propylene coordinated with carbon nanotube (CNT). Subsequently, pyridine and selenium atoms with well electroconductivity are introduced to synthesize the copolymer cathode (PTDSC, PTDSSeC). The lone pair electrons on nitrogen atoms within pyridyl groups establish strong Lewis acid–base interactions with lithium polysulfides, effectively anchoring active species and mitigating capacity fade; concurrently, the conjugated structure of pyridine rings optimizes electron transfer pathways to enhance reaction kinetics. Selenium, leveraging its lower electronegativity, redistributes charge density to reduce SS bond dissociation energy, facilitating reversible polysulfide conversion. The CNTs provide a 3D conductive scaffold and spatially confine polysulfides within the cathode. This synergy achieves quick kinetics of lithium polysulfides redox. Electrochemical result confirms that the copolymer cathode exhibits superior rate stability and capacity retention. Specifically, the PTDSSeC cathode maintains 76.4% of its reversible specific capacity after 500 cycles at a current density of 0.5 A g−1. This work demonstrates the synergistic optimization of “low shuttle-high activity-fast conduction” through the integration of short-chain sulfur, pyridine functional groups, and selenium atoms.","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 4","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147683078","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}

引用次数: 0

Bismuth-Integrated Nitrogen-Doped Carbon Nanostructures Enabling Broad Electrolyte Compatibility for Mg-Ion Batteries 铋集成氮掺杂碳纳米结构使镁离子电池具有广泛的电解质兼容性

IF 4.7 4区材料科学

Batteries & Supercaps Pub Date : 2026-04-04 Epub Date: 2025-11-03 DOI: 10.1002/batt.202500616

Woo Joo No, Jonghyun Han, Mingony Kim, Jihwan Choi, Kyung Yoon Chung, Kwan-Young Lee, Si Hyoung Oh

{"title":"Bismuth-Integrated Nitrogen-Doped Carbon Nanostructures Enabling Broad Electrolyte Compatibility for Mg-Ion Batteries","authors":"Woo Joo No, Jonghyun Han, Mingony Kim, Jihwan Choi, Kyung Yoon Chung, Kwan-Young Lee, Si Hyoung Oh","doi":"10.1002/batt.202500616","DOIUrl":"10.1002/batt.202500616","url":null,"abstract":"Bismuth has emerged as a promising alloying anode for magnesium-ion batteries (MIBs), offering high theoretical capacity with a low electrode potential, and thus serving as a viable alternative to Mg metal. Herein, Bi nanoparticle (NP)-integrated nitrogen-doped carbon nanostructures (Bi@nCN) are synthesized via a scalable one-step carbothermal reduction of BiOCl and Mg phthalocyanine. The resulting Bi@nCN features finely dispersed Bi NPs embedded in a nitrogen-doped carbon matrix, forming a stress-relieving architecture that accommodates the structural changes associated with the two-phase reaction between Bi and Mg3Bi2. Bi@nCN demonstrates excellent electrochemical performance, with high capacity retention, superior rate capability, and minimal polarization growth. Furthermore, full cells employing Bi@nCN anodes exhibit stable operation in chloride-free electrolytes, including ether- and nitrile-based systems, in which Mg metal typically develops insulating passivation layers. These findings highlight the potential of Bi@nCN to enable stable Mg-ion storage in chloride-free electrolytes, overcoming the intrinsic limitations of Mg metal anodes and expanding the scope of MIB chemistry with new electrolyte and cathode combinations.","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 4","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/batt.202500616","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147683189","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}

引用次数: 0

Electrochemical Iodination of Graphene Oxide via Redox Additive Electrolyte: A New Approach for High-Capacitance Supercapacitors 氧化还原添加剂电解氧化石墨烯的电化学碘化：制备高容量超级电容器的新途径

IF 4.7 4区材料科学

Batteries & Supercaps Pub Date : 2026-04-04 Epub Date: 2025-11-20 DOI: 10.1002/batt.202500410

Tanuja N. Shinde, Mangesh A. Desai, Amol S. Vedpathak, Ramchandra S. Kalubarme, Shrikrishna D. Sartale

{"title":"Electrochemical Iodination of Graphene Oxide via Redox Additive Electrolyte: A New Approach for High-Capacitance Supercapacitors","authors":"Tanuja N. Shinde, Mangesh A. Desai, Amol S. Vedpathak, Ramchandra S. Kalubarme, Shrikrishna D. Sartale","doi":"10.1002/batt.202500410","DOIUrl":"10.1002/batt.202500410","url":null,"abstract":"Halogenated graphene oxide (GO), offers a powerful strategy to tailor its structure and enhance electrochemical performance. Incorporating halogen atoms or ions induces a hybridization shift from sp2 to sp3 in graphene, significantly altering its local structure and electronic properties. In this study, an eco-friendly and rapid electrochemical method is presented using an optimized redox additive concentration of 0.6 M KI in a 3 M KOH electrolyte to introduce iodine species into the GO matrix, resulting in the formation of iodinated graphene oxide (I-GO). The formation of I-GO is systematically studied via Raman spectroscopy, x-ray photoelectron spectroscopy, scanning electron microscopy and energy-dispersive x-ray spectroscopy analyses. Structural and morphological characterizations confirm the successful integration of iodine and partial reduction of GO. The I-GO electrode demonstrated a maximum specific capacitance of 379.2 F g−1 at a current density of 3 A g−1 endorsing its excellent energy storage capacity. The fabricated I-GO symmetric supercapacitor coin cell device shows energy density of 24.9 Wh kg−1 and power density of 11.2 kW kg−1 while maintaining 82% capacitance retention after 5000 cycles at 10 A g−1. These findings highlight the potential of I-GO as a promising candidate for next-generation energy storage systems.","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 4","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147683790","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}

引用次数: 0

Synergistic Strategies for High-Energy Carbon Supercapacitors: A Comprehensive Review of Nanostructure, Doping, Composite, and Electrolyte Engineering 高能碳超级电容器的协同策略：纳米结构、掺杂、复合材料和电解质工程的综合综述

IF 4.7 4区材料科学

Batteries & Supercaps Pub Date : 2026-04-04 Epub Date: 2025-11-02 DOI: 10.1002/batt.202500564

Syed Shaheen Shah, Manisha Das, Takaya Ogawa, Asif Ali, Laiq Zada, Sana Ullah, Zafar Said, Muhammad Usman, Adnan Younis, Md. Abdul Aziz, Munetaka Oyama

{"title":"Synergistic Strategies for High-Energy Carbon Supercapacitors: A Comprehensive Review of Nanostructure, Doping, Composite, and Electrolyte Engineering","authors":"Syed Shaheen Shah, Manisha Das, Takaya Ogawa, Asif Ali, Laiq Zada, Sana Ullah, Zafar Said, Muhammad Usman, Adnan Younis, Md. Abdul Aziz, Munetaka Oyama","doi":"10.1002/batt.202500564","DOIUrl":"10.1002/batt.202500564","url":null,"abstract":"Carbon-based supercapacitors provide high power, fast charging, and long cycle life, yet limited energy density remains the main bottleneck. This review integrates complementary strategies that enhance energy storage without sacrificing rate capability or durability. Nanostructure engineering tunes hierarchical porosity, pore-size to ion-size matching, and surface curvature to maximize ion accessibility and shorten transport paths. Heteroatoms doping introduces fast surface redox, improves electronic structure and wettability, and stabilizes interfacial chemistry. Composite architectures that couple carbon with pseudocapacitive phases, including metal oxides, conducting polymers, MXenes, and MOF-derived materials, build percolated electron and ion pathways and mitigate mechanical degradation. Electrolyte optimization expands voltage and kinetics through water-in-salt formulations, gel polymer and solid-state media, and bio-derived electrolytes, with attention to desolvation, viscosity, and thermal tolerance. Emphasis is placed on the electrolyte-electrode interface, including ion confinement, interphase growth, and charge compensation mechanisms. An interaction-aware framework integrates pore architecture, doping chemistry, composite selection, and electrolyte design to propose design rules and performance trade-offs. Remaining gaps include operando diagnostics at relevant length scales, scalable synthesis with narrow property variance, aging models that link microstructure to failure, and sustainability metrics. Prospects center on high-energy, durable carbon supercapacitors for electric vehicles and renewable grid buffering.","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 4","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147683114","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}

引用次数: 0

Status Quo and Foresight of Emerging Aqueous Zn–MnO2 Battery: A Critical Opinion 新兴锌-二氧化锰水溶液电池的现状与展望

IF 4.7 4区材料科学

Batteries & Supercaps Pub Date : 2026-04-04 Epub Date: 2025-11-23 DOI: 10.1002/batt.202500277

Vinod Mathew, Sungjin Kim, Balaji Sambandam, Balamurugan Selvaraj, Moonsu Song, Jaekook Kim

{"title":"Status Quo and Foresight of Emerging Aqueous Zn–MnO2 Battery: A Critical Opinion","authors":"Vinod Mathew, Sungjin Kim, Balaji Sambandam, Balamurugan Selvaraj, Moonsu Song, Jaekook Kim","doi":"10.1002/batt.202500277","DOIUrl":"10.1002/batt.202500277","url":null,"abstract":"Alternative battery technologies have become the need of the hour in the wake of the aggressive demand for safe, affordable, and green energy storage systems (ESSs). From this standpoint, despite the present-day lithium-ion batteries (LIBs) broadly dominating the battery market, LIBs still suffer from bottlenecks of safety, cost, and eco-friendliness. In response to this call, Zn-based battery research has shown great promise due to the highly safe, low-cost, and very less environmental risk of the zinc element. In particular, the mildly acidic Zn–MnO2 battery system which was initially researched sporadically but is rejuvenated recently in 2012 has made great strides and comes a long way to establish itself as an appropriate solution for large-scale ESSs. This commentary provides the hindsight on the present research status related to the developments, issues, and the foreseen predictions of the Zn–MnO2 battery system. In short, the possibility of realizing this safe, low-cost, and eco-friendly battery system for plausible large-scale commercial stationary storage is explored.","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 4","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147684231","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}

引用次数: 0

Synergistic Integration of Carbon Nanotubes and Vertically Aligned Graphene Enables Silicon as Stable and High-Rate Anodes in Lithium-Ion Batteries 碳纳米管和垂直排列的石墨烯的协同集成使硅成为锂离子电池中稳定和高倍率的阳极

IF 4.7 4区材料科学

Batteries & Supercaps Pub Date : 2026-04-04 Epub Date: 2025-10-30 DOI: 10.1002/batt.202500648

Fenghua Yu, Yongbiao Mu, Meisheng Han, Hengyuan Hu, Zhiyu Zou, Kunxiong Zheng, Yuankai Huang, Wenjia Li, Lei Wei, Lin Zeng, Tianshou Zhao

{"title":"Synergistic Integration of Carbon Nanotubes and Vertically Aligned Graphene Enables Silicon as Stable and High-Rate Anodes in Lithium-Ion Batteries","authors":"Fenghua Yu, Yongbiao Mu, Meisheng Han, Hengyuan Hu, Zhiyu Zou, Kunxiong Zheng, Yuankai Huang, Wenjia Li, Lei Wei, Lin Zeng, Tianshou Zhao","doi":"10.1002/batt.202500648","DOIUrl":"10.1002/batt.202500648","url":null,"abstract":"As the demand for high-energy-density lithium-ion batteries grows, research increasingly focuses on high-capacity anode materials to substitute low-capacity graphite. Silicon is a promising, high-theoretical-capacity (4200 mAh g−1) anode material. However, suffering from severe volumetric expansion (≈400%) and poor conductivity (≈10−5 S cm−1), the silicon anode shows unsatisfactory cycling stability and rate performance. Here, a 3D interconnected conductive and porous carbon network is constructed by self-assembling carbon nanotubes onto silicon nanoparticles encapsulated in vertically aligned graphene through the spray drying method. The carbon network provides efficient space, accommodating volumetric expansion of Si. Vertical graphene provides directional ion transportation and carbon nanotubes accelerate the electron transfer due to their high conductivity. The collaboration constructs a 3D robust conductive network to boost charge transport throughout the electrode. With these structural advantages, the electrodes deliver high capacities of 904 mAhg−1 at 5 Ag−1 with high capacity retention of 78.0% after 1000 cycles and 418 mAhg−1 at 20 Ag−1, while exhibiting only a 2.6% thickness change in the cross-sectional direction after 100 cycles at 0.5 Ag−1. Furthermore, the lithium storage mechanism of the silicon–carbon anode is elucidated through cyclic voltammetry and ex situ X-ray diffraction.","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 4","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147684317","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}

引用次数: 0

Entropy-Driven Design of Dual-Polymer Electrolytes for Structural Energy Storage Applications 用于结构储能的双聚合物电解质的熵驱动设计

IF 4.7 4区材料科学

Batteries & Supercaps Pub Date : 2026-04-04 Epub Date: 2025-11-05 DOI: 10.1002/batt.202500647

Md Shovon Hossain, Jesse Z. Estrada-Jauregui, Caiwei Shen

{"title":"Entropy-Driven Design of Dual-Polymer Electrolytes for Structural Energy Storage Applications","authors":"Md Shovon Hossain, Jesse Z. Estrada-Jauregui, Caiwei Shen","doi":"10.1002/batt.202500647","DOIUrl":"10.1002/batt.202500647","url":null,"abstract":"Multifunctional electrolytes with efficient ionic transport and mechanical load-bearing are crucial for next-generation structural energy storage systems. However, existing structural electrolytes face an intrinsic trade-off between ionic conductivity and mechanical integrity. This study introduces an entropy-driven solid polymer electrolyte (SPE) design that simultaneously improves ionic transport and mechanical performance. By blending polylactic acid (PLA) and polymethyl methacrylate (PMMA) at distinct molecular weights with lithium bis(trifluoromethanesulfonyl)imide (LiTFSI), we leverage molecular-weight-mediated configurational entropy to tune SPE performance. Characterizations including differential scanning calorimetry, X-ray diffraction, and Fourier-transform infrared spectroscopy confirm miscible, interpenetrating networks with pervasive Li+-carbonyl coordination and high-entropy states. Electrochemical impedance spectroscopy demonstrates all dual-polymer electrolytes outperform single-polymer counterparts in ionic conductivity. Notably, a high-entropy formulation achieves ionic conductivity three orders of magnitude higher and activation energy 50%–65% lower than single-polymer versions. Mechanically, while single-polymer electrolytes occupy opposite ends of the toughness-stiffness spectrum, dual-polymer electrolytes overcome this by combining both attributes for a balanced response. One formulation attains a synergistic balance, delivering high stiffness (≈0.58 GPa) while preserving substantial toughness. These results illustrate that entropy-driven tuning navigates the conductivity-mechanics trade-off, engineering SPEs with balanced properties for structural energy storage applications.","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 4","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147683167","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}

引用次数: 0

Oxide-Type Positive Electrode Design Toward High-Energy Rechargeable Magnesium Batteries 高能可充电镁电池的氧化物型正极设计

IF 4.7 4区材料科学

Batteries & Supercaps Pub Date : 2026-03-31 DOI: 10.1002/batt.202500945

Takashi Yabu, Reona Iimura, Masaki Matsui, Hiroaki Kobayashi

{"title":"Oxide-Type Positive Electrode Design Toward High-Energy Rechargeable Magnesium Batteries","authors":"Takashi Yabu, Reona Iimura, Masaki Matsui, Hiroaki Kobayashi","doi":"10.1002/batt.202500945","DOIUrl":"10.1002/batt.202500945","url":null,"abstract":"While rechargeable magnesium batteries (RMBs) promise high energy density, their room-temperature operation is still limited; strong Mg2+–O2− interactions suppress ion diffusion and complicate positive electrode evaluation. This concept review outlines a practical pathway coupling cell design with nanoparticle strategies. First, weakly coordinating-anion electrolytes—especially Mg[Z(hfip)4]2 (Z = B, Al) with high oxidative stability—provide a fair baseline for rigorously verifying genuine Mg intercalation. On this foundation, the extreme downsizing strategy is summarized. Nanosized MgMn2O4 operates when particle dimensions approach the Mg penetration depth, and composition control further reduces resistance and overpotential, as electronically conductive CuMn2O4 nanospinels deliver higher capacities and rates. For rigid tunnel frameworks, ultrasmall, low-aspect-ratio α-MnO2 shortens 1D diffusion paths, increases discharge capacity, and improves retention. Beyond size effects, geometry-guided design motivates the exploration for host tunnels with the preferred Mg2+ site; romanechite with asymmetric 3 × 2 channels enables reversible intercalation without phase transition or tunnel collapse. Looking ahead, nanoparticulation remains essential for realizing stable, high-energy RMB positive electrodes operating at room temperature.","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 4","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/batt.202500945","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147684118","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}

引用次数: 0