Kuray Dericiler, Sajid Alvi, Amanda Persdotter, Valentina Matovic, Samik Roy Moulik, Lorenzo Stievano, Magnus Hörnqvist Colliander, Patrik Johansson
{"title":"(De)Sodiation Mechanisms and Cycling Stability of Entropy-Engineered Sodium-Ion Battery Alloy Anodes by Operando X-ray Diffraction","authors":"Kuray Dericiler, Sajid Alvi, Amanda Persdotter, Valentina Matovic, Samik Roy Moulik, Lorenzo Stievano, Magnus Hörnqvist Colliander, Patrik Johansson","doi":"10.1002/batt.70521","DOIUrl":"https://doi.org/10.1002/batt.70521","url":null,"abstract":"<p>Alloy anodes represent a high-capacity alternative to the prevalent hard carbon-based anodes for sodium ion-batteries. The major challenge is their large volumetric changes during (de)sodiation, consuming electrolyte and ultimately leading to pulverization of the anode and hence limited cycle life of the battery. To overcome this fundamental challenge, a proof-of-concept solution is introduced in SnSbBiSe<sub>1.5</sub>Te<sub>1.5</sub>, a high-entropy alloy, as shown by comparing its cycling performance with those of its low-entropy (Sb<sub>2</sub>Te<sub>3</sub>) and medium-entropy (SbBiSe<sub>1.5</sub>Te<sub>1.5</sub>) analogs. Using <i>operando</i> synchrotron X-ray diffraction, major differences are revealed during the (de)sodiation as function of configurational entropy, and by cross-sectional SEM further insight is gained on the roles of particle size and distribution, both initially and after cycling. Overall, this study highlights the importance of entropy-engineered and controlled particle size alloy anodes to limit volumetric changes and render stable cycling.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 11","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/batt.70521","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149356146","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":"A Novel Composite Cathode of Indanthrone/Graphene Oxide with an Expanded Ion Transport Channel for Aqueous Zinc-Ion Batteries","authors":"YiFan Li, XiaoFan Liu, Huan Li, Xingjiang Liu, Qiang Xu","doi":"10.1002/batt.70529","DOIUrl":"https://doi.org/10.1002/batt.70529","url":null,"abstract":"<p>Aqueous zinc-ion batteries (AZIBs) have attracted extensive attention owing to their abundant raw material reserves and superior safety. Compared with traditional inorganic cathode materials, organic cathodes exhibit promising prospects for next-generation batteries. Indanthrone (RD) consists of two imine-bridged anthraquinone units. The numerous redox-active sites within RD allow efficient coordination with Zn<sup>2+</sup>. To further improve the discharge performance of AZIBs, a novel RD/G composite cathode is fabricated via a hydrothermal method in this work, where RD is tightly coupled with graphene oxide (GO) possessing large interlayer spacing. In the RD/G composite, π–π stacking interactions between RD and GO construct a stable stacked architecture, accelerating electron transport and reinforcing structural integrity. Galvanostatic charge/discharge measurements reveal that the Zn|aqueous ZnSO<sub>4</sub>|RD/G-2 full cell delivers an initial discharge capacity of 83.5 mAh g<sup>−1</sup> at 800 mA g<sup>−1</sup>, and maintains a capacity of 83.7 mAh g<sup>−1</sup> wth 80.4% capacity retention after 2500 cycles. Density functional theory (DFT) calculations verify that the incorporation of GO increases the number of active sites, enhances cathode conductivity, and strengthens Zn<sup>2+</sup> binding affinity, thus accelerating Zn<sup>2+</sup> storage kinetics. This work offers a viable strategy and new insight toward developing high-performance aqueous zinc-ion batteries.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 11","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149355892","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}
Ngoc Tram Nguyen, Martin Eckert, Ulrike Wunderwald, Gero Frisch, Franziska Jach
{"title":"Optimization of the Cathode Composition for Aluminum Graphite Dual Ion Batteries","authors":"Ngoc Tram Nguyen, Martin Eckert, Ulrike Wunderwald, Gero Frisch, Franziska Jach","doi":"10.1002/batt.70516","DOIUrl":"https://doi.org/10.1002/batt.70516","url":null,"abstract":"<p>Li-free aluminum graphite dual ion batteries (AGDIB) have attracted attention due to abundant raw materials and low costs. AGDIB uses Al foils as anode material, natural graphite flakes as cathode, and AlCl<sub>3</sub>/[EMIm]Cl as electrolyte. To allow future upscaling, a significant increase of the cathode loading and optimization of cathode composition are inevitable. This is systematically investigated by varying graphite loading, water-soluble binders, such as sodium alginate and sodium carboxymethyl cellulose (CMC), as well as conductive additive content (Super C65, SC). The cathode loading was successfully increased to 10 mg cm<sup>−2</sup> achieving a specific capacity of 62.2 mAh g<sup>−1</sup> and a Coulombic efficiency of 97.5% at 1 C employing 700 kDa CMC and 5 wt% SC. At high currents, capacities fade more drastically when employing high-loading electrodes—mainly caused by increasing anodic overpotentials and only minimally by the cathode. GITT measurements revealed increasing apparent diffusion coefficients (<i>D</i><sub>app</sub>) for high C-rates indicating pseudocapacitive kinetics and highlighting high-power capabilities of AGDIB. Binder and electrode stability in the corrosive IL electrolyte is emphasized by a long-term cycle stability >700 cycles (1 C). The optimized cathode recipe yields ~61% gain in absolute cell capacity providing a foundation for future scale-up of AGDIBs.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 11","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/batt.70516","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149355701","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":"Growth of MnFe2O4 Nanoparticles on gC3N4 Nanosheets for Enhanced Charge Storage: A Heterostructure Approach to High-Performance Supercapacitors","authors":"Debika Gogoi, Rajeshvari Samatbhai Karmur, Narendra Nath Ghosh, Rakesh K. Sharma","doi":"10.1002/batt.70522","DOIUrl":"https://doi.org/10.1002/batt.70522","url":null,"abstract":"<p>The development of electrode materials with high specific capacitance, excellent rate capability, and long-term cycling stability is essential for advancing next-generation electrochemical energy-storage devices. In this work, MnFe<sub>2</sub>O<sub>4</sub>–gC<sub>3</sub>N<sub>4</sub> heterostructures containing different gC<sub>3</sub>N<sub>4</sub> loadings were synthesized through a facile solvothermal route to exploit the synergistic interaction between pseudocapacitive MnFe<sub>2</sub>O<sub>4</sub> nanoparticles and two-dimensional gC<sub>3</sub>N<sub>4</sub> nanosheets. Electrochemical investigations revealed that the incorporation of gC<sub>3</sub>N<sub>4</sub> significantly enhanced the charge-storage behavior compared with pure MnFe<sub>2</sub>O<sub>4</sub>. Among the prepared materials, the 70MnF–30gC<sub>3</sub>N<sub>4</sub> heterostructure exhibited the best electrochemical performance, delivering a high specific capacitance (<i>C</i><i><sub>s</sub></i>) of 701.8 F g<sup>−1</sup> at 1 A g<sup>−1</sup>, substantially exceeding that of other composites. Furthermore, a flexible all-solid-state supercapacitor device was assembled using the optimized heterostructure and tea-waste-derived porous carbon, which delivered an energy density of 89.3 Wh kg<sup>−1</sup> and retained ~96% of its initial capacitance after 5000 charge–discharge cycles while maintaining excellent electrochemical performance under bending and twisting conditions. These findings demonstrate that MnFe<sub>2</sub>O<sub>4</sub>–gC<sub>3</sub>N<sub>4</sub> heterostructures are promising electrode materials for flexible and high-performance supercapacitor applications.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 11","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149355702","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":"Progress on Failure Mechanisms and Modification Strategies of Ni-Rich Ternary Cathode Materials","authors":"Liang Peng, Jian Zhu, Zhaocheng Li, Xiangju Zhang, Bing-Xin Lei, Zhao-Qing Liu","doi":"10.1002/batt.70479","DOIUrl":"https://doi.org/10.1002/batt.70479","url":null,"abstract":"<p>Ni-rich ternary cathode materials deliver high reversible capacity and energy density, making them leading candidates for next-generation high-energy-density lithium-ion batteries. However, increasing Ni content inevitably destabilizes the layered structure, accelerates interfacial side reactions, and induces mechanical degradation, creating a trade-off between capacity and longevity. This review provides a comprehensive analysis of the coupled failure mechanisms that underlie this trade-off. Cation mixing and lattice oxygen release are identified as primary triggers that initiate irreversible phase transitions and surface reconstruction, which in turn promote microcracking and electrolyte infiltration, establishing a self-amplifying degradation loop that accelerates capacity fading. Based on this mechanistic understanding, recent advances in modification strategies are critically examined, including elemental doping, surface coating, concentration-gradient design, single-crystal engineering, defect regulation, and morphology optimization. The review highlights a paradigm shift from isolated modifications toward synergistic, multiscale design that integrates bulk structural stabilization, surface and interfacial protection, and particle mechanical integrity. Finally, future directions are proposed, emphasizing the extension of these synergistic design principles to all-solid-state battery systems, where solid–solid interfacial compatibility poses new challenges and opportunities.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 11","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149355741","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":"Pore Structure Engineering Enables Enhanced Sodium Storage in Boron-Doped Hard Carbon","authors":"Yanli Gong, Peng Zheng, Yichi Zhang, Peng Gao","doi":"10.1002/batt.70524","DOIUrl":"https://doi.org/10.1002/batt.70524","url":null,"abstract":"<p>Hard carbon (HC) has been considered a promising anode material for sodium-ion batteries (SIBs). However, a simultaneous regulation strategy to achieve multiscale structure optimization is highly desirable. Herein, we have systematically investigated the effects of pore structure engineering on boron-doped HC’s microstructure and Na<sup>+</sup> storage capability. An appropriate amount of boron atoms incorporated into the carbon matrix leads to the expansion of the closed pores that create more Na<sup>+</sup> storage sites, as well as the formation of BC<sub>3</sub> configurations that enhance Na<sup>+</sup> diffusion between adjacent carbon layers, as reported in our previous work. Moreover, the pore-forming treatment further increased sodium storage active sites such as micropores on the surface of HC without affecting other structure parameters. As a result, the boron-doped HC anode with optimized pore structure exhibits enhanced rate and cycling performance. In general, this work unravels the critical role of pore structure engineering in optimizing the charge transfer and ion diffusion of boron-doped HC, which enables rational design of sodium-ion battery anode with enhanced Na<sup>+</sup> storage performance.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 11","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149356576","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}
Min Wang, Ruyue Wang, Jiming Peng, Fengchun Wei, Qichang Pan, Fenghua Zheng, Qingyu Li, Hongqiang Wang, Sijiang Hu
{"title":"The Multifunctional Role of Ionic Liquids in Aqueous Zinc–Iodine Batteries","authors":"Min Wang, Ruyue Wang, Jiming Peng, Fengchun Wei, Qichang Pan, Fenghua Zheng, Qingyu Li, Hongqiang Wang, Sijiang Hu","doi":"10.1002/batt.70497","DOIUrl":"https://doi.org/10.1002/batt.70497","url":null,"abstract":"<p>Aqueous zinc–iodine batteries (ZIBs) are promising candidates for next-generation energy storage because of their inherent safety, high theoretical energy density, and low cost. However, their practical application is hindered by polyiodide shuttling at the cathode, dendrite growth at the zinc anode, and water-induced side reactions such as corrosion and hydrogen evolution. Conventional electrolytes fail to address these issues simultaneously. Ionic liquids (ILs) offer a versatile and designable electrolyte platform that can mitigate all three challenges. At the anode, ILs regulate the Zn<sup>2+</sup> solvation structure, construct a water–poor interfacial layer, and guide uniform (002)-oriented deposition. At the cathode, IL cations immobilize polyiodides through strong coordination, suppressing the shuttle effect and enhancing redox kinetics. In this review, we systematically discuss the fundamental properties of ILs and their specific effects on both electrodes in ZIBs. We also summarize recent progress in advanced characterization techniques and molecular simulations that provide insights into interfacial processes and solvation structures. Finally, we outline remaining challenges and future directions, including cost-effective IL synthesis, low-temperature operation, and practical device integration. This review aims to offer theoretical guidance and design principles for developing high-performance, long-life ZIBs through ILs electrolyte engineering.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 11","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149356632","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":"Laser-Induced Graphite as a Charge Storage Host for Reversible Intercalation of Potassium Ions","authors":"Priyaranjan Sahoo, Narendra Kurra","doi":"10.1002/batt.70518","DOIUrl":"https://doi.org/10.1002/batt.70518","url":null,"abstract":"<p>Conventional graphite is known to intercalate potassium ions in a reversible manner; however, thick and unstable solid electrolyte interphase (SEI) formation impedes the transportation of potassium ions. In this work, we report on the deployment of laser-induced graphitic carbon as an anode material for electrochemical intercalation of potassium ions. Despite an initial low coulombic efficiency, stable SEI formation on the laser-induced graphite electrode shows a reversible and stable potassiation capacity of 263 mAh/g at a specific current density of 25 mA/g, with 84% capacity retention over 150 cycles. The morphology of laser-induced graphite (LIG) probably promotes the controlled growth of interphase, unlike the case of conventional restacked graphite electrodes. Distribution of relaxation times (DRT) analysis confirms the facile diffusion of K<sup>+</sup> ions through the SEI layer formed on LIG electrodes.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 11","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149259178","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":"Transition Metal Oxide-Based Aqueous Zinc Ion Hybrid Supercapacitors: A Review","authors":"Abhirami Sukumaran, Helen Annal Therese","doi":"10.1002/batt.70511","DOIUrl":"https://doi.org/10.1002/batt.70511","url":null,"abstract":"<p>Transition metal oxide (TMO)-based aqueous zinc-ion hybrid supercapacitors (ZIHSCs) have emerged as promising next-generation energy-storage systems that bridge the gap between batteries and supercapacitors by combining the high energy-storage capability of battery-type Zn anodes with the rapid charge–discharge characteristics of capacitor-type or pseudocapacitive cathodes. Their intrinsic safety, environmental compatibility, and enhanced electrochemical performance make them promising alternatives for advanced energy-storage applications. TMOs are widely investigated as cathode materials owing to their multiple oxidation states, rich redox activity, structural tunability, natural abundance, and high theoretical capacitance. However, their practical application remains constrained by poor electrical conductivity, structural instability, active-material dissolution, and sluggish Zn<sup>2+</sup> diffusion kinetics. This review systematically summarizes recent advances in TMO-based aqueous ZIHSCs, covering device configurations, Zn<sup>2+</sup> storage fundamentals, and charge-storage mechanisms, particularly emphasizing on rational cathode design strategies, including nanostructure engineering, defect and vacancy modulation, and composite integration, to improve electrochemical performance. Furthermore, electrochemical charge-storage mechanisms, Zn<sup>2+</sup> intercalation/deposition behavior, electrolyte optimization, and interfacial reaction kinetics are critically discussed. Finally, key challenges, including Zn dendrite growth, cathode degradation, and electrolyte instability, are highlighted, and future research directions are proposed. This review provides a comprehensive perspective and strategic framework for developing high-performance TMO-based aqueous ZIHSCs for next-generation energy-storage applications.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 11","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149259379","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}
Avaneesh Balasubramanian, Francisco Fernandez, Alejandro A. Franco
{"title":"Insights Into Electrolyte Effects on Interfacial Kinetics and Transport in Porous Redox Flow Battery Electrodes: A Multiparadigm Modeling Study","authors":"Avaneesh Balasubramanian, Francisco Fernandez, Alejandro A. Franco","doi":"10.1002/batt.70512","DOIUrl":"https://doi.org/10.1002/batt.70512","url":null,"abstract":"<p>Redox flow batteries (RFBs) have emerged as promising candidates for large-scale energy storage owing to their decoupled energy and power densities. Electrolyte formulation plays a key role in determining the electrochemical performance of RFBs, influencing interfacial kinetics and transport within porous electrodes. Herein, we develop a multiscale modeling framework to investigate the coupled effects of the electrolyte concentration (methyl viologen (MV) and NaCl) and the fibrous 3D microstructure on the porous transport and electrochemical kinetics in organic RFBs using a kinetic Monte Carlo model. We link this interfacial kinetics to the advection–diffusion transport in stochastically generated carbon felt electrode microstructures through lattice Boltzmann method simulations via an interpolation-based coupling. We use two performance descriptors, the fiber-averaged rate of potential loss and convective area fraction, to quantify the kinetics and transport effects, along with their interplay. While increasing MV concentration enhances the interfacial kinetics, it limits the transport within the electrode microstructure. The interfacial kinetics shows to be nontrivially governed by the supporting electrolyte. A surface area–permeability trade-off appears across microstructures with different electrolyte concentrations. This multiparadigm modeling workflow provides mechanistic insights into porous transport and interfacial electrochemical kinetics, enabling the coupled optimization of microstructures and electrolytes in RFBs.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 11","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/batt.70512","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149258959","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}