Energy Storage Materials最新文献

One Stone Two Birds: Enhancing Energy Density and Temperature Adaptability for Vanadium-based Redox Flow Batteries via Dual Active Species Strategy 一石两鸟：通过双活性物种策略提高钒基氧化还原液流电池的能量密度和温度适应性

IF 20.4 1区材料科学

Energy Storage Materials Pub Date : 2025-10-19 DOI: 10.1016/j.ensm.2025.104693

Jinhui Ying, Huijia Li, Xiongjie Jia, Zihan Yu, Tianshou Zhao, Haoran Jiang

{"title":"One Stone Two Birds: Enhancing Energy Density and Temperature Adaptability for Vanadium-based Redox Flow Batteries via Dual Active Species Strategy","authors":"Jinhui Ying, Huijia Li, Xiongjie Jia, Zihan Yu, Tianshou Zhao, Haoran Jiang","doi":"10.1016/j.ensm.2025.104693","DOIUrl":"https://doi.org/10.1016/j.ensm.2025.104693","url":null,"abstract":"Vanadium-based redox flow batteries, characterized by no cross-contamination issue, are considered as one of the most promising candidates for large-scale energy storage. However, due to vanadium ions show relatively low solubility and are easy to precipitate at extreme temperatures, the battery suffers from the long challenge of low energy density and poor temperature adaptability. In this work, by introducing vanadium and bromine dual active species into the positive electrolyte, a novel V/V-Br redox flow battery (VBrRFB) is developed to boost the energy density and temperature window of vanadium-based flow batteries. The bromine, not only acts as the secondary redox couple to enhance the overall concentration of active species, but also disrupts the hydrogen bond network while optimizing the solvation structure of vanadium. As a result, the VBrRFB achieves an energy density of as high as 152.4 Wh L-1catholyte (38.1 Wh L-1catholyte+anolyte), which is 265.9% higher than traditional all-vanadium redox flow batteries, while maintaining stable cycling over 250 cycles with an energy efficiency of 82.5%. Additionally, the VBrRFB exhibited excellent stability and performance from -10°C to 50°C, with energy densities of 107.6 Wh L-1catholyte at 50 °C and 88.8 Wh L-1catholyte at -10 °C, demonstrating its strong potential for practical energy storage.","PeriodicalId":306,"journal":{"name":"Energy Storage Materials","volume":"116 1","pages":""},"PeriodicalIF":20.4,"publicationDate":"2025-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145314833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Inhibiting Manganese Dissolution in LiFe0.4Mn0.6PO4 Through Synergistic Effect of Ti-Doping and LiTiOPO4-Coating ti掺杂与liopo4涂层协同抑制LiFe0.4Mn0.6PO4中锰的溶解

IF 20.4 1区材料科学

Energy Storage Materials Pub Date : 2025-10-19 DOI: 10.1016/j.ensm.2025.104691

Guodong Li, Shaoyuan Zhao, Yongjie Cao, Mengyan Hou, Mochou Liao, Zhaolu Liu, Kai Zhang, Linfang Wang, Dewen Kong, Haijing Liu, Yongyao Xia

{"title":"Inhibiting Manganese Dissolution in LiFe0.4Mn0.6PO4 Through Synergistic Effect of Ti-Doping and LiTiOPO4-Coating","authors":"Guodong Li, Shaoyuan Zhao, Yongjie Cao, Mengyan Hou, Mochou Liao, Zhaolu Liu, Kai Zhang, Linfang Wang, Dewen Kong, Haijing Liu, Yongyao Xia","doi":"10.1016/j.ensm.2025.104691","DOIUrl":"https://doi.org/10.1016/j.ensm.2025.104691","url":null,"abstract":"Lithium iron manganese phosphate (LiFe0.4Mn0.6PO4, LFMP) cathodes offer higher energy density than LiFePO4 but face challenges with poor cycle stability, primarily due to severe manganese dissolution caused by Jahn-Teller distortion, phase transition stress, and electrolyte corrosion. This study proposes a dual Ti-modification strategy combining Ti-doping and LiTiOPO4 (LTOP) coating to address these challenges. The Ti-doped LFMP@C@LTOP (LFMP-Ti5) was synthesized via a scalable spray-drying method. Ti-doping reduces octahedral distortion, alleviates lattice misfit during phase transitions, and enhances lithium-ion diffusion. Meanwhile, the LTOP coating suppresses Mn dissolution by shielding the cathode from interfacial side reactions. Electrochemical tests demonstrate that LFMP-Ti5 retains capacity of 92.4% after 900 cycles at 1C (room temperature) and 99.6% after 300 cycles at 45°C, outperforming unmodified LFMP (84.5% and 94.0%, respectively). Structural and spectroscopic analyses confirm reduced Mn dissolution (0.79% in LFMP-Ti5 vs. 5.47% in LFMP), minimal lattice volume change (−0.11% vs. −0.93%), reduced lattice volume misfits (6.2% vs. 6.7%), and suppressed Jahn-Teller distortion in charged states. The synergistic Ti-doping and LTOP-coating strategy effectively stabilizes the LFMP structure, and the practical usability of LFMP-Ti5 is validated by the excellent performance in pouch cells.","PeriodicalId":306,"journal":{"name":"Energy Storage Materials","volume":"112 1","pages":""},"PeriodicalIF":20.4,"publicationDate":"2025-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145314708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Molecular Scalpel for Solvation Sheath Surgery: Trace Phosphocholine Chloride Sodium Mediates Dual-Interface Regulation Toward Ultra-Stable Aqueous Zinc-Ion Batteries 用于溶剂化鞘手术的分子手术刀：微量磷酸胆碱氯化钠介导超稳定水锌离子电池的双界面调节

IF 20.4 1区材料科学

Energy Storage Materials Pub Date : 2025-10-19 DOI: 10.1016/j.ensm.2025.104695

Yanjing Rong, Song Zhang, Quan Kuang, Zhixiong Xu, Zhitao Shen, Qinghua Fan, Youzhong Dong, Yunhua Cheng, Yanming Zhao

{"title":"Molecular Scalpel for Solvation Sheath Surgery: Trace Phosphocholine Chloride Sodium Mediates Dual-Interface Regulation Toward Ultra-Stable Aqueous Zinc-Ion Batteries","authors":"Yanjing Rong, Song Zhang, Quan Kuang, Zhixiong Xu, Zhitao Shen, Qinghua Fan, Youzhong Dong, Yunhua Cheng, Yanming Zhao","doi":"10.1016/j.ensm.2025.104695","DOIUrl":"https://doi.org/10.1016/j.ensm.2025.104695","url":null,"abstract":"Uncontrollable and harmful Zn-metal chemistry occurring at the electrode/electrolyte interface significantly impedes the widespread commercialization of aqueous zinc-ion batteries (AZIBs). Herein, a biocompatible phosphocholine chloride sodium salt (PCS) as a trace additive is introduced into the traditional ZnSO4 aqueous electrolyte, effectively stabilizing the dual interfaces at both the anode and cathode sides. The hydrophobic choline moieties and the zincophilic phosphate groups within PCS spontaneously assemble a compact interfacial bilayer on the zinc anode surface, synergistically guiding the uniform deposition of Zn2+ and preventing water adsorption. The PCS can reorganize the Zn2+ solvation structure and capture free water through enhanced strong hydrogen bonds, thereby inhibiting interface corrosion and hydrogen evolution reaction. Furthermore, the adsorption of PCS on the cathode surface not only greatly maintains the integrity of the cathode structure but also enhances the long-cycle stability of the full cells. Consequently, the symmetric Zn//Zn cell achieves a remarkable cumulative capacity of 17.5 Ah cm−2 with outstanding durability over 7002 h at 5 mA cm−2. The Zn//Cu asymmetric cell maintains a 99.89% average coulombic efficiency upon 6576 cycles at 1 mA cm−2, demonstrating high reversibility. Notably, the Zn//NaV3O8⋅1.5H2O full cell demonstrates 83.56% capacity retention after 3000 cycles at 5 A g−1. This work provides a regulation strategy for the bilateral interfaces to achieve highly stable AZIBs.","PeriodicalId":306,"journal":{"name":"Energy Storage Materials","volume":"41 1","pages":""},"PeriodicalIF":20.4,"publicationDate":"2025-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145314832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Achieving 480 Wh kg⁻1 in 4.6 V Lithium Metal Batteries with Ultrahigh-Nickel Cathodes via a Multifunctional Additive 通过多功能添加剂在具有超高镍阴极的4.6 V锂金属电池中实现480 Wh kg⁻1

IF 20.4 1区材料科学

Energy Storage Materials Pub Date : 2025-10-18 DOI: 10.1016/j.ensm.2025.104692

Min Wu, Mingming Fang, Jiangchuan Liu, Shaopan Qin, Shijie Wang, Kang Liang, Zhengping Ding, Jianbin Li, Xiaobing Huang, Jianmin Ma, Yurong Ren

{"title":"Achieving 480 Wh kg⁻1 in 4.6 V Lithium Metal Batteries with Ultrahigh-Nickel Cathodes via a Multifunctional Additive","authors":"Min Wu, Mingming Fang, Jiangchuan Liu, Shaopan Qin, Shijie Wang, Kang Liang, Zhengping Ding, Jianbin Li, Xiaobing Huang, Jianmin Ma, Yurong Ren","doi":"10.1016/j.ensm.2025.104692","DOIUrl":"https://doi.org/10.1016/j.ensm.2025.104692","url":null,"abstract":"High-nickel layered oxides (e.g., LiNi0.90Co0.05Mn0.05O2, NCM9055) coupled with lithium metal anodes are promising for next-generation high-energy-density batteries, yet their practical implementation is hindered by critical interfacial instabilities, including lithium dendrite growth, electrolyte decomposition at high voltages (≥ 4.5 V vs. Li/Li⁺), and transition metal dissolution. To address these concurrent challenges, we introduce 2-propoxy-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (PTDP) as a novel multifunctional electrolyte additive designed for dual-electrode stabilization. The innovative molecular architecture of PTDP integrates a pyridine ring, which chelates transition metals to inhibit dissolution, with a boronic ester group functioning as an anion receptor to enhance Li⁺ transport and homogenize flux. Density functional theory calculations reveal that PTDP preferentially decomposes to form a robust LiF/Li3N/LiBO2 hybrid interphase exhibits an exceptionally high Li⁺ adsorption energy (–6.70 eV), facilitating uniform Li⁺ deposition, accelerated kinetics, and effective dendrite suppression. Concurrently, the PTDP-derived cathode electrolyte interphase preserves the structural integrity of the NCM9055 cathode during cycling. As a result, a 1.5 Ah NCM9055||Li pouch cell employing a carbonate-based electrolyte with only 0.5 wt% PTDP additive demonstrates exceptional cycling stability, retaining 95.8% of its capacity after 60 cycles at 4.6 V, and delivering a high energy density of 480 Wh kg⁻1, significantly outperforming additive-free counterpart.","PeriodicalId":306,"journal":{"name":"Energy Storage Materials","volume":"1 1","pages":""},"PeriodicalIF":20.4,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145314709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Low-Cost High-Air-Stability Argyrodite Electrolyte Delivering Excellent Interface Compatibility in All-Solid-State Lithium Metal Batteries 低成本、高空气稳定性的银柱石电解质在全固态锂金属电池中提供优异的界面兼容性

IF 20.4 1区材料科学

Energy Storage Materials Pub Date : 2025-10-17 DOI: 10.1016/j.ensm.2025.104689

Xin Zhang, Hongming Yi, Yonghao Shi, Kangjun Lu, Miao Zhang, Dewei Zhang, Huizhen Zeng, Shuaishuai Zhang, Dengyue Ji, Pengyu Chen, Bingqing Xu, Chuanjin Tian, Zheng Li, Xue Zhang

{"title":"Low-Cost High-Air-Stability Argyrodite Electrolyte Delivering Excellent Interface Compatibility in All-Solid-State Lithium Metal Batteries","authors":"Xin Zhang, Hongming Yi, Yonghao Shi, Kangjun Lu, Miao Zhang, Dewei Zhang, Huizhen Zeng, Shuaishuai Zhang, Dengyue Ji, Pengyu Chen, Bingqing Xu, Chuanjin Tian, Zheng Li, Xue Zhang","doi":"10.1016/j.ensm.2025.104689","DOIUrl":"https://doi.org/10.1016/j.ensm.2025.104689","url":null,"abstract":"Argyrodite Li6PS5Cl (LPSC) solid electrolytes have shown great promise for all-solid-state lithium batteries owing to their high ionic conductivity and mechanical robustness, yet they face three critical challenges: high production costs, detrimental interfacial reactions with lithium anodes, and poor air stability. In this work, an oxygen and fluorine co-doped argyrodite electrolyte Li5.5PS2.5O2Cl1.4F0.1 (LPSOCF) is developed. Strategic precursor selection lowers the material cost of LPSOCF to only 3.65% that of LPSC, facilitating kilogram-scale synthesis and marking a critical step towards commercialization. The incorporation of oxygen and fluorine stabilizes the PS43- tetrahedral framework and decreases the water adsorption energy, endowing the electrolyte with markedly enhanced air stability (retaining 95.6% of its original ionic conductivity after 10h exposure to 10% humidity). Meanwhile, the synergistic doping of oxygen and fluorine induces the in-situ formation of a Li2O/LiF/Li3PO4 multicomponent interface layer between the electrolyte and the lithium metal anode, conspicuously bolstering interface stability in the all-solid-state lithium metal batteries. Consequently, the Li|LPSOCF|Li symmetric batteries achieve a critical current density (CCD) of 4.5 mA cm-2 and exhibit stable lithium plating/stripping over 2800 hours. Furthermore, the Li|LPSOCF-Li2.5ZrCl5.5O0.5 |LiCoO2 batteries retain 80% of their initial capacity after 635 cycles at 0.5C and 84% after 1000 cycles at 1C. This work constitutes a cornerstone for the scalable commercial deployment of argyrodite electrolytes in all-solid-state batteries.","PeriodicalId":306,"journal":{"name":"Energy Storage Materials","volume":"102 1","pages":""},"PeriodicalIF":20.4,"publicationDate":"2025-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145314710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Ceramic-Topological Polymer Composite Electrolytes: Interfacial Engineering via Dynamic Coordination-Driven Networks for Long-Life, High-Voltage Solid-State Lithium Metal Batteries 陶瓷-拓扑聚合物复合电解质：基于动态协调驱动网络的界面工程用于长寿命高压固态锂金属电池

IF 20.4 1区材料科学

Energy Storage Materials Pub Date : 2025-10-15 DOI: 10.1016/j.ensm.2025.104686

Zhuangzhuang Wei, Bin Wu, Zhengfei Yang, Anyi Hu, Yong Wang, Yixiao Zhang, Jun Huang, Nagahiro Saito, Liwei Chen, Li Yang

{"title":"Ceramic-Topological Polymer Composite Electrolytes: Interfacial Engineering via Dynamic Coordination-Driven Networks for Long-Life, High-Voltage Solid-State Lithium Metal Batteries","authors":"Zhuangzhuang Wei, Bin Wu, Zhengfei Yang, Anyi Hu, Yong Wang, Yixiao Zhang, Jun Huang, Nagahiro Saito, Liwei Chen, Li Yang","doi":"10.1016/j.ensm.2025.104686","DOIUrl":"https://doi.org/10.1016/j.ensm.2025.104686","url":null,"abstract":"Polymer-ceramic composite solid-state electrolytes offer transformative potential for high-energy-density lithium metal batteries but face challenges such as ceramic agglomeration and interfacial incompatibility. Herein, we report a ceramic-topological polymer composite electrolyte synthesized via in situ thermally initiated free radical polymerization. By the weak coordination-inducing effect between surface-modified Li1.3Al0.3Ti1.7(PO4)3 (LATP@M) particles and a poly(ethylene carbonate) matrix, uniform ceramic dispersion and interfacial adhesion are achieved. Simultaneously, a topological polymer architecture establishes a \"dynamic interfacial continuum\", bridging ceramic domains and supporting efficient Li⁺ conduction. The resultant electrolyte exhibits a ceramic-rich \"polymer-in-ceramic\" structure, in which the LATP@M phase acts as the conducting network, suppressing dendrite growth while ensuring rapid ion transport. The optimized electrolyte demonstrates exceptional ionic conductivity (0.72 mS cm-1), a high Li⁺ transference number (0.75), and an ultra-wide electrochemical stability window (5.7 V vs. Li/Li⁺). Full cells paired with LiFePO4 and LiCoO2 cathodes deliver outstanding cycling stability and Coulombic efficiency (> 99.5%), while flexible pouch cells retain functionality under mechanical abuse. This work provides a scalable strategy to harmonize ionic conduction, interfacial compatibility, and mechanical robustness in solid-state batteries, advancing the development of safe, long-lifespan energy storage systems.","PeriodicalId":306,"journal":{"name":"Energy Storage Materials","volume":"5 1","pages":""},"PeriodicalIF":20.4,"publicationDate":"2025-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145289235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Multi-redox Organic Species for High-Energy-Density Aqueous Redox Flow Batteries: Mechanism, Characteristics, and Applications 高能量密度水氧化还原液流电池的多氧化还原有机材料：机理、特性及应用

IF 20.4 1区材料科学

Energy Storage Materials Pub Date : 2025-10-15 DOI: 10.1016/j.ensm.2025.104684

Bo Hu, Tianyi Zhou, Lin Hu, Qichen Lu, Peng Liu, Ruling Huang, Xiaolong Wang

引用次数: 0

Enhanced dielectric insulation of biaxially oriented high temperature polyester films for capacitive energy storage 用于电容储能的双向取向高温聚酯薄膜的增强介电绝缘

IF 20.4 1区材料科学

Energy Storage Materials Pub Date : 2025-10-15 DOI: 10.1016/j.ensm.2025.104687

Tianke Chen, Michael Chen, Jiazhen Liu, Grace Gilson, Siyu Wu, Honghu Zhang, Shihai Zhang, Eric Baer, Lei Zhu

{"title":"Enhanced dielectric insulation of biaxially oriented high temperature polyester films for capacitive energy storage","authors":"Tianke Chen, Michael Chen, Jiazhen Liu, Grace Gilson, Siyu Wu, Honghu Zhang, Shihai Zhang, Eric Baer, Lei Zhu","doi":"10.1016/j.ensm.2025.104687","DOIUrl":"https://doi.org/10.1016/j.ensm.2025.104687","url":null,"abstract":"Biaxially oriented polypropylene (BOPP) films are widely used in dielectric capacitors due to their ultralow loss, high breakdown strength, and long lifetime. However, their poor temperature tolerance limits applications in emerging high-temperature environments such as wide-band-gap power electronics in electric vehicles. Here, we report significantly enhanced dielectric insulation properties of biaxially oriented poly(ethylene 2,6-naphthalate) (BOPEN) films compared to biaxially oriented poly(ethylene terephthalate) (BOPET) films, despite their similar semicrystalline morphologies. BOPEN exhibits higher DC and AC breakdown strengths and markedly extended lifetimes at elevated temperatures. For instance, at 120 °C, the DC Weibull lifetime of BOPEN exceeded that of BOPET by over two orders of magnitude and even surpassed that of BOPP. Through comprehensive analyses—leakage current, electric displacement-electric field (D-E) loops, and thermally stimulated depolarization current—we attribute this superior performance to suppressed homocharge injection and conduction losses, enabled by the rigid naphthalene-based backbone in BOPEN that reduces dipole mobility and chain polarity. These findings underscore the potential of BOPEN as a next-generation polymer dielectric for high-temperature capacitor applications.","PeriodicalId":306,"journal":{"name":"Energy Storage Materials","volume":"67 1","pages":""},"PeriodicalIF":20.4,"publicationDate":"2025-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145289214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Unlocking fast charging of supercapacitors: a job-sharing mechanism for ion transport and storage 解锁超级电容器的快速充电：离子传输和存储的工作共享机制

IF 20.2 1区材料科学

Energy Storage Materials Pub Date : 2025-10-15 DOI: 10.1016/j.ensm.2025.104685

Chenglin Liang , Jianglin Fu , Shengda Tang , Jiye Li , Pan Duan , Shuaikai Xu , Guang Feng , Yongfeng Bu , Tangming Mo

{"title":"Unlocking fast charging of supercapacitors: a job-sharing mechanism for ion transport and storage","authors":"Chenglin Liang , Jianglin Fu , Shengda Tang , Jiye Li , Pan Duan , Shuaikai Xu , Guang Feng , Yongfeng Bu , Tangming Mo","doi":"10.1016/j.ensm.2025.104685","DOIUrl":"10.1016/j.ensm.2025.104685","url":null,"abstract":"<div><div>Mesopores are crucial for balancing fast-charge/high-rate capability with high electrode density in carbon-based supercapacitors. However, the mechanisms governing ion transport and storage within mesopores are often simplified to descriptions of ion buffer pools or diminished pore confinement effects. Herein, we present a comprehensive kinetic model of ion transport and charging dynamics within mesopores by integrating constant-potential molecular dynamics simulations of mesoporous electrodes with experimental electrochemical investigations. Quantitative simulations matching the results of experiments indicate that the charging dynamics and rate performance of mesopores significantly outperform those of micropores. Surpassing traditional understandings, we propose a novel job-sharing mechanism between the diffusion layer and the Stern layer that governs the superior ion dynamics of mesopores. Specifically, the diffusion layer ions facilitate rapid ion migration through preserved solvation structures and low energy barriers, while the Stern layer ions predominantly contribute to charge storage. This spatial separation of ion transport and charge storage provides a fundamental explanation for the enhanced dynamic performance of mesoporous structures, offering valuable guidance for the rational design of porous carbon materials with optimized fast-charge/rate and volumetric performance.</div></div>","PeriodicalId":306,"journal":{"name":"Energy Storage Materials","volume":"83 ","pages":"Article 104685"},"PeriodicalIF":20.2,"publicationDate":"2025-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145289212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Harnessing iodine doping to unlock high-loading SPAN dry-electrode for practical Li–S batteries 利用碘掺杂解锁用于实用锂电池的高负载SPAN干电极

IF 20.2 1区材料科学

Energy Storage Materials Pub Date : 2025-10-14 DOI: 10.1016/j.ensm.2025.104682

Dong Jun Kim , Hyun Wook Jung , Tae Hwa Hong, Seung Min Ko, Jae Seong Lee, Jung Tae Lee

{"title":"Harnessing iodine doping to unlock high-loading SPAN dry-electrode for practical Li–S batteries","authors":"Dong Jun Kim , Hyun Wook Jung , Tae Hwa Hong, Seung Min Ko, Jae Seong Lee, Jung Tae Lee","doi":"10.1016/j.ensm.2025.104682","DOIUrl":"10.1016/j.ensm.2025.104682","url":null,"abstract":"<div><div>Sulfurized polyacrylonitrile (SPAN) is a promising cathode material for high-loading lithium–sulfur batteries owing to its inherent ability to suppress the shuttle effect. However, they undergo severe volume changes during cycling. Fabrication of dry electrodes can mitigate this issue by providing structural integrity and mechanical robustness while enabling high-loading electrodes without binder migration or conductive material aggregation due to the elimination of solvent evaporation. Despite these advantages, the nonpolar nature of the polytetrafluoroethylene (PTFE) binder limits Li+ affinity and ion transport. Herein, we introduce an iodine-doped SPAN (I-SPAN), in which the incorporation of iodine creates an electron-rich environment that enhances Li+ adsorption and diffusion. The dissolution of iodine into the electrolyte triggers nucleophilic substitution with PF6–, forming a LiF/LiI-rich cathode–electrolyte interphase (CEI) that lowers the interfacial resistance and improves structural stability. Consequently, solvent-free I-SPAN dry electrodes with 90 wt% active material deliver an areal capacity of 22.6 mAh cm-2 at a loading of 42.4 mgAM cm-2 and a rate of 0.05 A gAM-1. In addition, at a loading of 8.8 mgAM cm-2, the dry electrode maintained a reversible capacity of approximately 4.0 mAh cm-2 even at a high current density 0.5 A gAM-1.</div></div>","PeriodicalId":306,"journal":{"name":"Energy Storage Materials","volume":"83 ","pages":"Article 104682"},"PeriodicalIF":20.2,"publicationDate":"2025-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145283677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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