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Influence of Calendar Aging on Cell-To-Cell Variation of 18650 NCA Cells With Blended Si- and SiOx-Based/Graphite Electrodes 日历老化对混合硅基和硅氧基/石墨电极18650 NCA电池细胞间变化的影响
IF 4.5 4区 材料科学
Batteries & Supercaps Pub Date : 2026-09-14 DOI: 10.1002/batt.70454
Duc Minh Nguyen, Ahmed Chahbaz, Felix Hildenbrand, Katharina Lilith Quade, Gereon Stahl, Dirk Uwe Sauer
{"title":"Influence of Calendar Aging on Cell-To-Cell Variation of 18650 NCA Cells With Blended Si- and SiOx-Based/Graphite Electrodes","authors":"Duc Minh Nguyen,&nbsp;Ahmed Chahbaz,&nbsp;Felix Hildenbrand,&nbsp;Katharina Lilith Quade,&nbsp;Gereon Stahl,&nbsp;Dirk Uwe Sauer","doi":"10.1002/batt.70454","DOIUrl":"https://doi.org/10.1002/batt.70454","url":null,"abstract":"<p>Silicon-containing negative electrodes increase the energy density of lithium-ion batteries but promote heterogeneous degradation due to their large volume expansion. This study compares calendar aging of Si–graphite (Si–Gr) and SiO<i><sub>x</sub></i>-graphite (SiO<i><sub>x</sub></i>-Gr) cells, focusing on degradation mechanisms and statistical variation. 30 commercial 18650 cells per cell type were aged for up to 323 days at 100% state of charge and 35 °C. Capacity, resistance, and voltage relaxation were monitored, and degradation modes were identified via differential analysis and electrode balancing. Si–Gr cells show initially lower capacity variation but higher resistance variation. With aging, their coefficient of variation increases significantly across capacity, resistance, and degradation modes, indicating increasingly heterogeneous behavior. SiO<i><sub>x</sub></i>-Gr cells exhibit low and stable variation, reflecting homogeneous aging. SiO<i><sub>x</sub></i>-Gr cells show higher capacity fade but moderate resistance increase, whereas Si–Gr cells show lower capacity fade and about three times higher, more widely spread resistance growth. Degradation is dominated by loss of lithium inventory, with more pronounced loss of active material in Si–Gr cells, with silicon being the dominant factor. Voltage relaxation correlates with capacity fade and serves as a noninvasive indicator of aging. The dataset is publicly available.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 9","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/batt.70454","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148994026","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
Spray Pyrolysis-Derived Scalable LiNi0.5Mn0.3Co0.2O2 Submicron Particles as Cathode for Lithium-Ion Battery 喷雾热解衍生可扩展LiNi0.5Mn0.3Co0.2O2亚微米颗粒作为锂离子电池正极材料
IF 4.5 4区 材料科学
Batteries & Supercaps Pub Date : 2026-09-10 DOI: 10.1002/batt.70477
Saravanakumar Pitchai, Gokulnath Subramaniam, Mohamed Yasir Abbas, Afrin Sulthana Kabeer Sherief, Raju Maruthan, Marappan Sathish
{"title":"Spray Pyrolysis-Derived Scalable LiNi0.5Mn0.3Co0.2O2 Submicron Particles as Cathode for Lithium-Ion Battery","authors":"Saravanakumar Pitchai,&nbsp;Gokulnath Subramaniam,&nbsp;Mohamed Yasir Abbas,&nbsp;Afrin Sulthana Kabeer Sherief,&nbsp;Raju Maruthan,&nbsp;Marappan Sathish","doi":"10.1002/batt.70477","DOIUrl":"https://doi.org/10.1002/batt.70477","url":null,"abstract":"<p>Lithium-ion batteries (LIBs) utilizing layered NMC cathode materials are widely used in applications ranging from consumer electronics to electric vehicles due to their high nominal voltage, high capacity, and minimal self-discharge. However, scaling up NMC via conventional methods such as sol–gel, solid-state, coprecipitation, and hydrothermal routes remains challenging due to issues with poor uniformity and performance instability. Consequently, new synthesis strategies are required to overcome these limitations. In this study, spray pyrolysis was employed to synthesize nickel-rich, phase-pure NMC532 with an optimal submicron particle size. Particle size distribution and surface morphology were inspected using FE-SEM, while EELS confirmed the presence of Ni, Co, and Mn in +2, +3, and +4 oxidation states, respectively, matching the chemical states of the commercial NMC. Furthermore, Rietveld refinement of the p-XRD pattern indicated lithium occupation in the 3a site with minimal antisite defects. The synthesized NMC532 delivered a high specific capacity of 180 mAh/g at a C/10 rate and 200 mAh/g at C/20, comparable to NMC synthesized via traditional methods. With a 70% capacity retention, this study establishes spray pyrolysis as a cost-effective and scalable pathway for manufacturing NMC cathode materials for commercial applications.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 9","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148943102","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
Impact of Particle Morphology on Processing and Performance of Sodium Ion Anodes 颗粒形貌对钠离子阳极加工及性能的影响
IF 4.5 4区 材料科学
Batteries & Supercaps Pub Date : 2026-09-10 DOI: 10.1002/batt.70476
Johannes Kühn, Tom Boenke, Florian S. Hoffmann, Thomas Abendroth, Holger Althues, Stefan Kaskel
{"title":"Impact of Particle Morphology on Processing and Performance of Sodium Ion Anodes","authors":"Johannes Kühn,&nbsp;Tom Boenke,&nbsp;Florian S. Hoffmann,&nbsp;Thomas Abendroth,&nbsp;Holger Althues,&nbsp;Stefan Kaskel","doi":"10.1002/batt.70476","DOIUrl":"https://doi.org/10.1002/batt.70476","url":null,"abstract":"<p>Despite pronounced research on hard carbon (HC) anode materials for sodium-ion batteries (SIB), particularly the impact of particle morphology on electrode microstructure poses open questions regarding ionic as well as electrical transport or sodium metal plating. This study systematically compares two hard carbons, one representing a nonspherical particle morphology (HC-Ref) and the other representing a spherical particle morphology (HC-Sph-10:90). Industrially relevant loadings were investigated across powder, electrode, half-cell, and full-cell configurations. The analysis of powder and electrode microstructure revealed that spherical particles exhibited superior packing efficiency, leading to higher electrode densities, whereas nonspherical particles retained electrode porosity upon calendaring, thereby enhancing ionic transport. The formation of multipoint contacts was identified to enhance conductive pathways. The electrochemical characterization revealed a clear trade-off between the dense packing and transport capability of the anode. This trade-off translated into three-electrode full cells, where morphology-related polarization affected the potential-defined onset of sodium metal plating. Sodium metal plating is therefore governed by operating conditions like current density and voltage window, while the electrode structure determines the underlying transport limitations and thus the plating susceptibility. Consequently, electrode microstructure is presented as a critical design parameter, together with design guidelines for the optimization of hard carbon anodes for high-energy and plating-resistant SIBs.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 9","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/batt.70476","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148943106","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
Electroconductive Composite Cathode Material Composed of Lithium Fluoride and Lithium-Doped Nickel Oxide with High Utilization for All-Solid-State Batteries 全固态电池用高利用率氟化锂与掺锂氧化镍复合导电正极材料
IF 4.5 4区 材料科学
Batteries & Supercaps Pub Date : 2026-09-08 DOI: 10.1002/batt.70474
Keigo Tashiro, Sotaro Kato, Sora Takeuchi, Shuhei Shimoda, Yoshiumi Kohno, Yasumasa Tomita
{"title":"Electroconductive Composite Cathode Material Composed of Lithium Fluoride and Lithium-Doped Nickel Oxide with High Utilization for All-Solid-State Batteries","authors":"Keigo Tashiro,&nbsp;Sotaro Kato,&nbsp;Sora Takeuchi,&nbsp;Shuhei Shimoda,&nbsp;Yoshiumi Kohno,&nbsp;Yasumasa Tomita","doi":"10.1002/batt.70474","DOIUrl":"https://doi.org/10.1002/batt.70474","url":null,"abstract":"<p>The improvement of capacity of cathodic active materials in all-solid-state lithium-ion batteries (ASS-LIBs) is a critical challenge for meeting future electronic power demands. In this study, a composite active material consisting of lithium fluoride (LiF) and nickel oxide (NiO) predoped with lithium ion (Li<sup>+</sup>) at various doping levels (<b>Li(<i>x</i>)NiO</b>), denoted as <b>LiF-Li(<i>x</i>)NiO</b>, was synthesized and applied to ASS-LIBs. Notably, predoping of Li<sup>+</sup> into NiO enhanced the electronic conductivity throughout the cathode because of the appearance of energy levels at the bandgap region in an original NiO band structure, which improved the utilization efficiency of Li<sup>+</sup> in <b>LiF-Li(<i>x</i>)NiO</b>. The maximum discharge capacity of 152 mAh g<sup>–1</sup> was achieved when <b>LiF-Li(<i>x</i>)NiO</b> predoped with 20 mol% Li<sup>+</sup> was employed. We demonstrate that the rational enhancement of electronic conductivity in active materials is a promising strategy for the development of better ASS-LIBs.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 9","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148942841","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
Tin-Modified MXene Composite Electrodes as Lithiophilic Hosts for Stable Lithium Metal Anodes 锡修饰MXene复合电极作为稳定锂金属阳极的亲锂基质
IF 4.5 4区 材料科学
Batteries & Supercaps Pub Date : 2026-09-07 DOI: 10.1002/batt.70466
Nicholas Vallana, Antonio Gentile, Stefano Marchionna, Lorenzo Stievano, Riccardo Ruffo
{"title":"Tin-Modified MXene Composite Electrodes as Lithiophilic Hosts for Stable Lithium Metal Anodes","authors":"Nicholas Vallana,&nbsp;Antonio Gentile,&nbsp;Stefano Marchionna,&nbsp;Lorenzo Stievano,&nbsp;Riccardo Ruffo","doi":"10.1002/batt.70466","DOIUrl":"https://doi.org/10.1002/batt.70466","url":null,"abstract":"<p>Lithium metal anodes provide a tenfold higher theoretical capacity than graphite but face issues such as dendritic growth, unstable solid–electrolyte interphases (SEIs), large volume changes, and “dead” lithium formation, which limit their practical application. In this work, a Sn-modified Ti<sub>3</sub>C<sub>2</sub>T<sub><i>x</i></sub> MXene host (Sn@MX) is introduced to combine the lamellar architecture of MXene with Sn-derived lithiophilic sites, enabling controlled lithium deposition. The Sn@MX material was prepared through precursor-assisted expansion of MXene lamellae followed by incorporation of Sn-containing species. Electrochemical testing using the reservoir method shows that Sn@MX maintains stable plating and stripping for over 120 cycles at 1 mA cm<sup>−2</sup>, unlike copper and untreated MXene electrodes, which fail rapidly. Ex situ and <i>operando</i> optical microscopy indicate that lithium preferentially deposits within the Sn@MX electrode structure, resulting in more uniform deposition and reduced dendritic growth. These results emphasize the importance of combining porous lamellar architectures with lithiophilic sites to develop stable lithium metal anodes for advanced batteries.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 9","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/batt.70466","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148942564","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
Internal Magnetic Fields Enhance Capacity Retention in Aqueous Zinc-Organic Batteries With Quinone Cathodes 内磁场增强醌阴极锌有机水电池的容量保持
IF 4.5 4区 材料科学
Batteries & Supercaps Pub Date : 2026-09-03 DOI: 10.1002/batt.70465
Kaylie A. McCracken, Pedaballi Sireesha, Jeffrey G. Bell
{"title":"Internal Magnetic Fields Enhance Capacity Retention in Aqueous Zinc-Organic Batteries With Quinone Cathodes","authors":"Kaylie A. McCracken,&nbsp;Pedaballi Sireesha,&nbsp;Jeffrey G. Bell","doi":"10.1002/batt.70465","DOIUrl":"https://doi.org/10.1002/batt.70465","url":null,"abstract":"<p>The development of alternatives to lithium-ion batteries (LIBs) is critical to address concerns related to resource availability, cost, and sustainability. Aqueous zinc-ion batteries (AZIBs) are promising alternatives to LIBs due to their low cost and ease of fabrication, inherent safety, material abundance, recyclability, and high theoretical specific capacity. However, their practical implementation is hindered by dendrite formation, interfacial instability, and capacity fading. Here, we investigate the use of internal magnetic fields as a passive, zero-energy input strategy to enhance the electrochemical performance of AZIBs employing poly(2-chloro-3,5,6-trisulfide-1,4-benzoquinone) (PCTB) organic cathodes. Through the incorporation of internal magnetic fields into Swagelok-type AZIBs, several electrochemical performance metrics are improved. Interestingly, cells operated under a 50 mT internal magnetic field exhibit reduced charge-transfer resistance (~80% decrease relative to 0 mT), improved specific discharge capacity (16.4% increase after 250 cycles at 1C), and enhanced capacity retention. Electrochemical impedance spectroscopy, galvanostatic cycling, and post-cycling structural analyses suggest that magnetic-field-induced magnetohydrodynamic effects contribute to more uniform zinc deposition and improved interfacial stability. These results demonstrate that internal magnetic fields can serve as an efficient and scalable strategy to improve the performance of AZIBs with organic cathodes, without additional materials or energy input.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 9","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/batt.70465","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149048043","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
Design and Analysis of Bilayer NMC/LFP Cathodes via an Electrochemical–Mechanical Coupled Model 基于电化学-力学耦合模型的双层NMC/LFP阴极设计与分析
IF 4.5 4区 材料科学
Batteries & Supercaps Pub Date : 2026-09-03 DOI: 10.1002/batt.70473
Junpei Wang, Zhan-Sheng Guo
{"title":"Design and Analysis of Bilayer NMC/LFP Cathodes via an Electrochemical–Mechanical Coupled Model","authors":"Junpei Wang,&nbsp;Zhan-Sheng Guo","doi":"10.1002/batt.70473","DOIUrl":"https://doi.org/10.1002/batt.70473","url":null,"abstract":"<p>Thick-electrode design is a promising strategy for achieving high-energy-density lithium-ion batteries. In this work, an electrochemical–mechanical coupled model is developed for bilayer cathodes consisting of two distinct active materials. Using a bilayer LiNi<sub>1/3</sub>Mn<sub>1/3</sub>Co<sub>1/3</sub>O<sub>2</sub> (NMC)/LiFePO<sub>4</sub> (LFP) cathode as a representative system, the effects of material arrangement on Li-ion transport, rate capability, and stress evolution are systematically investigated. The model is validated against experimental polarization data. Results show that the configuration with the NMC layer adjacent to the separator exhibits significantly improved rate capability under high C-rate conditions. Optimization of the sublayer thickness ratio involves a trade-off between maximizing theoretical capacity and maintaining high-rate performance. Owing to the distinct lithiation-induced volume expansion behaviors of NMC and LFP, pronounced stress gradients and severe local stress concentration develop near the bilayer interface, imposing stringent requirements on interfacial adhesion during cycling. Furthermore, when the LFP sublayer occupies a sufficiently large thickness fraction, a saddle-shaped distribution of Li-ion concentration and von Mises stress emerges within the LFP layer near the current collector. These findings provide quantitative design guidelines for bilayer cathodes with balanced electrochemical performance and mechanical durability.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 9","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149043618","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
Complementing the VRFB Membrane Performance Assessment Using Color Sensors for Self-Discharge and Durability Stress Test 利用颜色传感器对VRFB膜进行自放电和耐久性应力测试
IF 4.5 4区 材料科学
Batteries & Supercaps Pub Date : 2026-09-03 DOI: 10.1002/batt.70469
Nikita Buriak, Xiang Li, Ilia Khristoforov, Anastasija Jablanovic, Elena Gryazina, Jinhai Jiang, Chuanyu Sun, Mikhail Pugach
{"title":"Complementing the VRFB Membrane Performance Assessment Using Color Sensors for Self-Discharge and Durability Stress Test","authors":"Nikita Buriak,&nbsp;Xiang Li,&nbsp;Ilia Khristoforov,&nbsp;Anastasija Jablanovic,&nbsp;Elena Gryazina,&nbsp;Jinhai Jiang,&nbsp;Chuanyu Sun,&nbsp;Mikhail Pugach","doi":"10.1002/batt.70469","DOIUrl":"https://doi.org/10.1002/batt.70469","url":null,"abstract":"<p>Reliable assessment of ion-exchange membrane performance is essential for the design of VRFB systems, yet conventional accelerated cycling protocols assessing durability metrics depend on electrolyte volume and cycle duration, limiting their comparability and sensitivity to long-term chemical degradation. This work proposes a stress-test methodology implying the continuous color sensing of both electrolytes under 100% state-of-charge conditions, providing a durability indicator that is less dependent on cycle duration and electrolyte volume compared to conventional cycling-based metrics and capable of resolving the temporal evolution of self-discharge. The method was incorporated in the polarization and galvanostatic cycling tests of four representative membranes: Nafion-212, Asahi, PBI, and SPEEK. The obtained results were validated by post-test FTIR spectroscopy and compared with the Coulombic efficiency, permeability, and self-discharge metrics obtained from open-circuit voltage registration. The results demonstrate that the proposed approach allows for faster capture chemical degradation of the membrane compared to conventional tests. Rapid oxidative failure of SPEEK was observed within 1600 s of exposure to aggressive electrolyte media, followed by an increase in crossover examined in operando regime. FTIR analysis confirms SPEEK oxidation occurred during the stress test. The proposed framework provides insights for membrane durability assessment and material selection.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 9","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149048042","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
ZIF-67-Derived Co1−xS Nanoparticles Encapsulated in N-Doped Carbon Nanotubes as Bifunctional Oxygen Electrocatalysts for High-Performance Rechargeable Zn-Air Batteries 氮掺杂碳纳米管封装的zif -67衍生Co1−xS纳米颗粒作为高性能可充电锌空气电池的双功能氧电催化剂
IF 4.5 4区 材料科学
Batteries & Supercaps Pub Date : 2026-08-31 DOI: 10.1002/batt.70464
Jin Wang, Xiaolong Ji, Xiaoming Zhou, Lili Jiang, Yang Zhou, Lizhi Sheng
{"title":"ZIF-67-Derived Co1−xS Nanoparticles Encapsulated in N-Doped Carbon Nanotubes as Bifunctional Oxygen Electrocatalysts for High-Performance Rechargeable Zn-Air Batteries","authors":"Jin Wang,&nbsp;Xiaolong Ji,&nbsp;Xiaoming Zhou,&nbsp;Lili Jiang,&nbsp;Yang Zhou,&nbsp;Lizhi Sheng","doi":"10.1002/batt.70464","DOIUrl":"https://doi.org/10.1002/batt.70464","url":null,"abstract":"<p>The development of efficient and durable bifunctional oxygen electrocatalysts is crucial for high-performance rechargeable Zn-air batteries. Herein, a hierarchical Co<sub>1−</sub><sub><i>x</i></sub>S@C/NCNTs heterostructure composed of Co-deficient Co<sub>1−<i>x</i></sub>S nanoparticles encapsulated by carbon layers and coupled with N-doped carbon nanotubes is constructed through melamine-assisted pyrolysis followed by vapor-phase sulfuration. During this process, ZIF-67-derived Co nanoparticles catalyze the in situ growth of NCNTs, while subsequent sulfuration converts metallic Co into defect-rich Co<sub>1−<i>x</i></sub>S and partially incorporates sulfur into the carbon/NCNT framework. The resulting hierarchical porous structure, interconnected conductive NCNT network, N,S-doped carbon environment, carbon-layer confinement, and nonstoichiometric Co<sub>1−<i>x</i></sub>S phase synergistically promote electron transfer, oxygen diffusion, electrolyte penetration, and the adsorption/conversion of oxygen-containing intermediates. Consequently, Co<sub>1−<i>x</i></sub>S@C/NCNTs exhibits favorable bifunctional ORR/OER activity, with an ORR half-wave potential of 0.83 V, an OER overpotential of 340 mV at 10 mA cm<sup>−2</sup>, and a low-potential gap of 0.74 V. The assembled rechargeable Zn-air battery delivers an open-circuit voltage of 1.46 V, a peak power density of 120.7 mW cm<sup>−2</sup>, a specific capacity of 581.43 mAh g<sub>Zn</sub><sup>−1</sup>, and stable cycling for 60 h. This work provides a rational strategy for designing defect-rich sulfide/carbon heterostructures for rechargeable Zn-air batteries.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 9","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148943671","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
Extension of the Calendar Lifetime of Silicon Anodes With Prelithiation by Thermal Vapor Deposition 热气相沉积预锂化法延长硅阳极日历寿命
IF 4.5 4区 材料科学
Batteries & Supercaps Pub Date : 2026-08-31 DOI: 10.1002/batt.70440
Rhys A. Otten, Jeff Green, Glenn Teeter, Baris Key, Tyler Sweet, Amanda L. Musgrove, Trevor R. Martin, John Westgard, Nathan R. Neale, Gabriel M. Veith, Amy L. Prieto, Kae E. Fink, Katharine L. Harrison
{"title":"Extension of the Calendar Lifetime of Silicon Anodes With Prelithiation by Thermal Vapor Deposition","authors":"Rhys A. Otten,&nbsp;Jeff Green,&nbsp;Glenn Teeter,&nbsp;Baris Key,&nbsp;Tyler Sweet,&nbsp;Amanda L. Musgrove,&nbsp;Trevor R. Martin,&nbsp;John Westgard,&nbsp;Nathan R. Neale,&nbsp;Gabriel M. Veith,&nbsp;Amy L. Prieto,&nbsp;Kae E. Fink,&nbsp;Katharine L. Harrison","doi":"10.1002/batt.70440","DOIUrl":"https://doi.org/10.1002/batt.70440","url":null,"abstract":"<p>Anodes for lithium-ion batteries utilizing Si nanoparticles have now met critical energy density and cycle lifetime metrics. While their calendar lifetimes have improved due to substantial recent research efforts, the impact of prelithiation on calendar lifetime for advanced Si anodes comprising nanoparticle active material has not been rigorously studied. In this work, prelithiation of Si nanoparticle active material by thermal vapor deposition is explored while assessing the impact of this prelithiation method on electrochemical performance and calendar lifetime. Vapor prelithiation is shown to increase the predicted calendar lifetime as a function of increased prelithiation quantities. This trend is not observed with a systematic increase in prelithiation quantity via electrochemical prelithiation. In addition, the impact of substrate heating on vapor deposition of lithium is explored to provide insight into system-dependent optimization of the vapor deposition process. As a final result, the shelf life of vapor-prelithiated anode materials for practical industrial considerations is reported.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"9 9","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148943497","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
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