Journal of Power Sources最新文献_第6页

A novel hydrated salt gel with high thermal conductivity and enthalpy for thermal management and thermal runaway prevention in lithium-ion batteries 一种新型高导热高焓水合盐凝胶，用于锂离子电池的热管理和热失控预防

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2026-05-15 Epub Date: 2026-03-07 DOI: 10.1016/j.jpowsour.2026.239813

Zelin Wu , Jiandong Zuo , Xiaoming Fang , Ziye Ling , Zhengguo Zhang

{"title":"A novel hydrated salt gel with high thermal conductivity and enthalpy for thermal management and thermal runaway prevention in lithium-ion batteries","authors":"Zelin Wu , Jiandong Zuo , Xiaoming Fang , Ziye Ling , Zhengguo Zhang","doi":"10.1016/j.jpowsour.2026.239813","DOIUrl":"10.1016/j.jpowsour.2026.239813","url":null,"abstract":"<div><div>Hydrated salt phase change materials are ideal for battery thermal management due to their flame retardancy and dual-phase temperature regulation. However, leakage, rigidity, and low thermal conductivity limit their application. Here, a novel hydrated salt gel with high enthalpy and high thermal conductivity is developed using disodium hydrogen phosphate dodecahydrate as the phase change material, polyvinyl alcohol and sodium alginate as the carrier matrix, and hydrophilically-modified expanded graphite (HEG) as the thermally conductive filler. HEG overcomes the typical trade-off between heat storage and conduction. With 5 wt% HEG, the hydrated salt gel achieves a latent heat of 194.2 J/g, thermal decomposition enthalpy of 1216 J/g, and thermal conductivity of 2.88 W/(m·K), while maintaining leakage resistance and mechanical robustness in both crystalline and molten states. After 500 cycles, enthalpy loss is only 6.9%. Experiments demonstrate that the hydrated salt gel can reduce the maximum temperature and maximum temperature difference of the battery pack during 2 C discharge to 45.5 °C and 4.6 °C, respectively. It also effectively suppresses thermal runaway propagation, reducing the peak temperature of the thermal runaway cell by 171.3 °C. This work demonstrates a promising material for safe and efficient battery thermal management.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"674 ","pages":"Article 239813"},"PeriodicalIF":7.9,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Simultaneous interlayer expansion and structural stabilization of δ-MnO2 via sodium/molybdenum co-doping for ultra-stable aqueous zinc-ion batteries 钠/钼共掺杂超稳定水锌离子电池中δ-MnO2的层间膨胀和结构稳定

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2026-05-15 Epub Date: 2026-03-06 DOI: 10.1016/j.jpowsour.2026.239812

Wujie Gao , Jiayue Feng , Xin Wang , Yishen Zhang , Songcan Wang

{"title":"Simultaneous interlayer expansion and structural stabilization of δ-MnO2 via sodium/molybdenum co-doping for ultra-stable aqueous zinc-ion batteries","authors":"Wujie Gao , Jiayue Feng , Xin Wang , Yishen Zhang , Songcan Wang","doi":"10.1016/j.jpowsour.2026.239812","DOIUrl":"10.1016/j.jpowsour.2026.239812","url":null,"abstract":"<div><div>Although δ-MnO<sub>2</sub> is a promising cathode for aqueous zinc-ion batteries (AZIBs), its practical application is hindered by structural instability, Mn dissolution, and irreversible phase transitions during cycling. Herein, we address these challenges by developing a dual Na<sup>+</sup>/Mo<sup>6+</sup> doped δ-MnO<sub>2</sub> (NaMo-MnO<sub>2</sub>) cathode via a hydrothermal-annealing method. Na<sup>+</sup> acts as an interlayer pillar to expand the spacing and facilitate Zn<sup>2+</sup> diffusion, while Mo<sup>6+</sup> doping stabilizes the layered framework and suppresses detrimental phase transitions. This synergistic effect endows NaMo-MnO<sub>2</sub> with exceptional cycling stability (100% capacity retention after 6500 cycles at 3 A g<sup>−1</sup>) and a high reversible capacity (250 mAh g<sup>−1</sup> at 0.1 A g<sup>−1</sup>). Mechanistic studies reveal that optimized activation (30 cycles) induces an irreversible phase transformation to ZnMnO<sub>3</sub>, enabling subsequent stable Zn<sup>2+</sup>/H<sup>+</sup> co-intercalation and controlled Mn dissolution/deposition. This work provides a rational design strategy for high-performance MnO<sub>2</sub> cathodes in AZIBs.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"674 ","pages":"Article 239812"},"PeriodicalIF":7.9,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Region-aware cross-condition electrochemical parameter identification of high-capacity lithium-ion battery through sequential global–local optimization 基于序贯全局-局部优化的区域感知大容量锂离子电池跨工况电化学参数辨识

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2026-05-15 Epub Date: 2026-03-03 DOI: 10.1016/j.jpowsour.2026.239763

Xu Ge , Ruixiang Zheng , Xiaobo Chen , Wei Shen , Jingbo Qu , Mian Li

{"title":"Region-aware cross-condition electrochemical parameter identification of high-capacity lithium-ion battery through sequential global–local optimization","authors":"Xu Ge , Ruixiang Zheng , Xiaobo Chen , Wei Shen , Jingbo Qu , Mian Li","doi":"10.1016/j.jpowsour.2026.239763","DOIUrl":"10.1016/j.jpowsour.2026.239763","url":null,"abstract":"<div><div>The widespread deployment of large-format lithium-ion batteries for grid-scale energy storage demands accurate and computationally tractable electrochemical models tailored to their unique characteristics. Existing parameter identification methods either lack robustness across varying operating conditions or struggle with the high-dimensional, correlated parameter spaces inherent to high-capacity cells. In this paper, we develop a region-aware sequential global–local optimization framework that integrates cross-condition sensitivity analysis, Bayesian exploration, and granular-adaptive local refinement to accurately and efficiently estimate parameters of physics-based battery models. We validate the proposed method using discharge data from a commercial 280 Ah lithium-ion cell across multiple C-rates, demonstrating consistent accuracy and fidelity, particularly in critical state-of-charge regions. Our results reveal the dominant roles of geometric and transport parameters across discharge regimes, offering physically interpretable insights while addressing longstanding challenges in model generalization. This work establishes a rigorous foundation for next-generation battery modeling and management, particularly under the demanding conditions of grid-integrated energy systems.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"674 ","pages":"Article 239763"},"PeriodicalIF":7.9,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Self-supported Ni-Cu catalyst toward ampere level current in urea electrooxidation via multi-active-site coupling 自支撑镍铜催化剂对多活性位点耦合尿素电氧化安培电流的影响

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2026-05-15 Epub Date: 2026-03-06 DOI: 10.1016/j.jpowsour.2026.239796

Zhijiao Ji , Shenghao Zhao , Zhangyou Wang , Lu Hao , Jiawen Li , Fangge Cheng , Mansor Hussain , Wei Su , Jia Liu

{"title":"Self-supported Ni-Cu catalyst toward ampere level current in urea electrooxidation via multi-active-site coupling","authors":"Zhijiao Ji , Shenghao Zhao , Zhangyou Wang , Lu Hao , Jiawen Li , Fangge Cheng , Mansor Hussain , Wei Su , Jia Liu","doi":"10.1016/j.jpowsour.2026.239796","DOIUrl":"10.1016/j.jpowsour.2026.239796","url":null,"abstract":"<div><div>Electrocatalytic urea oxidation reaction (UOR) coupled with hydrogen evolution reaction (HER) to construct urea electrolytic cells is an effective method to achieve low energy consumption for hydrogen production. Two-dimensional Ni(OH)<sub>2</sub> has been widely studied in the field of UOR, however, the development of an ampere-level-current UOR catalyst with fast kinetics is still a challenge. Herein, the self-supporting electrode CF/CNM-S with Cu<sub>2</sub>S/Mo-doped Ni(OH)<sub>2</sub> was synthesized which integrates multiple structural features including a heterojunction, a super-metastable phase, a sulfidized surface, and a nanoarray architecture. Experiments combined with theoretical study revealed that using a foam copper derivative as the carrier effectively enhanced the loading and dispersion of Ni(OH)<sub>2</sub> nanosheets, while the nanoarray architecture significantly improved mass transport and diffusion. During the UOR process, the molybdenum-doped NiOOH and CuOOH species generated via the self-reconstruction of CF/CNM-S were identified as the true active phases. The resulting hierarchical heterostructure enabled fine-tuning of the surface electronic states, and the super-metastable state induced by molybdenum doping regulated the catalyst's activation capability towards urea molecules, and facilitated the cleavage of C-N bonds and the oxidation of CO intermediates. Consequently, the as-prepared CF/CNM-S electrode achieved a UOR current density of 1006 mA cm<sup>−2</sup> at 1.8 V (vs. RHE) in an electrolyte containing 3 M KOH and 3 M urea.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"674 ","pages":"Article 239796"},"PeriodicalIF":7.9,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147388124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hierarchical low Pt-loading “core-shell” electrocatalysts for the oxygen reduction reaction in fuel cells 用于燃料电池氧还原反应的分级低pt负载“核-壳”电催化剂

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2026-05-15 Epub Date: 2026-03-04 DOI: 10.1016/j.jpowsour.2026.239733

Gioele Pagot , Keti Vezzù , Angeloclaudio Nale , Francesco Bonaccorso , Paweł J. Kulesza , Iwona A. Rutkowska , Enrico Negro , Thomas A. Zawodzinski , David A. Cullen , Piotr Zelenay , Vito Di Noto

{"title":"Hierarchical low Pt-loading “core-shell” electrocatalysts for the oxygen reduction reaction in fuel cells","authors":"Gioele Pagot , Keti Vezzù , Angeloclaudio Nale , Francesco Bonaccorso , Paweł J. Kulesza , Iwona A. Rutkowska , Enrico Negro , Thomas A. Zawodzinski , David A. Cullen , Piotr Zelenay , Vito Di Noto","doi":"10.1016/j.jpowsour.2026.239733","DOIUrl":"10.1016/j.jpowsour.2026.239733","url":null,"abstract":"<div><div>The sluggish kinetics of the oxygen reduction reaction (ORR) hinder cost-effective polymer electrolyte fuel cells (PEFCs), which rely on scarce, expensive platinum-based electrocatalysts (ECs). Here, we present a novel synthesis method for ORR ECs achieving exceptional platinum utilization. The design features a hierarchical “<em>multi-carbon</em>” support comprising carbon nanoparticles interacting with graphene nanoplatelets as the “<em>core</em>”, encapsulated by a porous carbon nitride (CN) “<em>shell</em>”. This configuration promotes strong core/shell interactions and a bimodal active site distribution, consisting of chemically dispersed Pt and Ni single-atom complexes and PtNi<sub>x</sub> alloy nanoclusters embedded in the CN shell. These advantages enable high activity and durability, achieving an ORR activity of 1.6 A mg<sub>Pt</sub><sup>−1</sup> at 0.9 V <em>vs</em>. RHE-an order of magnitude higher than Pt/C (0.17 A mg<sub>Pt</sub><sup>−1</sup>). A proof-of-concept PEFC demonstrates a specific power of 12.0 kW g<sub>Pt</sub><sup>−1</sup> at 0.60 V. This approach offers a significant step toward more efficient and sustainable PEFC technologies.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"674 ","pages":"Article 239733"},"PeriodicalIF":7.9,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147388126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Oxygenated iron boride (FeBOx) as a bifunctional electrocatalyst for overall water splitting in prototype electrolyzer 氧合硼化铁（FeBOx）作为双功能电催化剂在原型电解槽中的整体水分解

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2026-05-15 Epub Date: 2026-03-05 DOI: 10.1016/j.jpowsour.2026.239786

Aasiya S. Jamadar , Rupesh S. Pedanekar , Rohit B. Sutar , Suprimkumar D. Dhas , Sung Jin Kim , Jyotiprakash B. Yadav

{"title":"Oxygenated iron boride (FeBOx) as a bifunctional electrocatalyst for overall water splitting in prototype electrolyzer","authors":"Aasiya S. Jamadar , Rupesh S. Pedanekar , Rohit B. Sutar , Suprimkumar D. Dhas , Sung Jin Kim , Jyotiprakash B. Yadav","doi":"10.1016/j.jpowsour.2026.239786","DOIUrl":"10.1016/j.jpowsour.2026.239786","url":null,"abstract":"<div><div>We report a scalable synthesis of novel oxygenated iron boride (FeBO<sub>x</sub>) thin films using the successive ionic layer adsorption and reaction (SILAR) method. The influence of deposition cycle numbers on the structural, morphological, and electrocatalytic properties is systematically examined for both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). The FeBO<sub>x</sub> catalyst deposited over 100 SILAR cycles exhibits excellent bifunctional activity, requiring overpotentials of only 96 mV for HER and 300 mV for OER at 10 mA cm<sup>−2</sup>. Tafel analysis reveals a transition in HER kinetics from a Volmer to a Heyrovsky limited mechanism with increasing deposition cycles, while OER primarily followed the adsorbate evolution mechanism (AEM). Enhanced redox reversibility, larger electrochemically active surface area (ECSA), and improved catalytic site accessibility have been confirmed through cyclic voltammetry. The optimized FeBO<sub>x</sub> catalyst demonstrates remarkable stability over 100 h at 10 mA cm<sup>−2</sup>, maintaining a stable cell voltage of ∼1.87 V. In a prototype alkaline electrolyzer, the FeBO<sub>x</sub> (100 cycles) catalyst sustains 100 h of continuous operation, generating ∼245 mL h<sup>−1</sup> of O<sub>2</sub> with a 2:1 H<sub>2</sub>:O<sub>2</sub> ratio. These results establish FeBO<sub>x</sub> as a durable, cost-effective, and (platinum) Pt-free catalyst for efficient and cost-effective alkaline water splitting.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"674 ","pages":"Article 239786"},"PeriodicalIF":7.9,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147388122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rational design and facile synthesis of IrCoMo ternary electrocatalysts supported on reduced graphene oxide for enhanced oxygen evolution reaction in acidic media 还原氧化石墨烯负载的IrCoMo三元电催化剂的合理设计和简便合成，用于酸性介质中增强析氧反应

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2026-05-15 Epub Date: 2026-02-28 DOI: 10.1016/j.jpowsour.2026.239737

Yunbo Xu , Tao Du , Changjian Wang

{"title":"Rational design and facile synthesis of IrCoMo ternary electrocatalysts supported on reduced graphene oxide for enhanced oxygen evolution reaction in acidic media","authors":"Yunbo Xu , Tao Du , Changjian Wang","doi":"10.1016/j.jpowsour.2026.239737","DOIUrl":"10.1016/j.jpowsour.2026.239737","url":null,"abstract":"<div><div>Reduced graphene oxide (rGO) is widely recognized as an effective catalyst support material. Its utility stems from its ability to provide abundant anchoring sites, which promote nanoparticle nucleation, growth, and robust attachment. More significantly, rGO enhances the intrinsic catalytic activity of the supported nanoparticles through electronic interactions at the metal-support interface. The rGO sheets served as a unique support to anchor ultrasmall, multicomponent Ir-based nanoparticles via a straightforward hydrothermal treatment followed by annealing. The IrCoMo/rGO-600 catalyst in this research achieves an optimal compromise between diminished noble-metal consumption and enhanced catalytic performance in PEMWE applications. It delivers a low overpotential of 211 mV at a current density of 10 mA cm<sup>−2</sup>, while also showing excellent long-term stability, which surpasses those of traditional IrO<sub>2</sub> catalysts. Furthermore, the catalyst exhibits remarkable operational stability, maintaining this current density for over 30 h without significant degradation. Thus, the improved electrocatalytic performance of the IrCoMo/rGO-600 catalyst mainly stems from the robust electronic interaction between the IrCoMo atomic components and the graphite support. This interaction increases the electron density of the metal centers, resulting in an optimal electronic configuration for the OER.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"674 ","pages":"Article 239737"},"PeriodicalIF":7.9,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147388125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Robust dynamic operation of high temperature electrolysis solid oxide cells 高温电解固体氧化物电池的鲁棒动态运行

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2026-05-15 Epub Date: 2026-03-05 DOI: 10.1016/j.jpowsour.2026.239770

Zhikuan Zhu , Michael J. Dzara , Heather Slomski , Madeline Van Winkle , Oscar Hathaway , Liam A.V. Nagle-Cocco , Nicholas A. Strange , Brian P. Gorman , Sarah Shulda , Michael C. Tucker

{"title":"Robust dynamic operation of high temperature electrolysis solid oxide cells","authors":"Zhikuan Zhu , Michael J. Dzara , Heather Slomski , Madeline Van Winkle , Oscar Hathaway , Liam A.V. Nagle-Cocco , Nicholas A. Strange , Brian P. Gorman , Sarah Shulda , Michael C. Tucker","doi":"10.1016/j.jpowsour.2026.239770","DOIUrl":"10.1016/j.jpowsour.2026.239770","url":null,"abstract":"<div><div>This study evaluates the durability of Ni/YSZ-supported SOECs under dynamic operating conditions relevant to real-world applications. Systematic tests were conducted to assess cell performance under steam cycling (3 to 75% humidified H<sub>2</sub>), mode cycling between SOFC and SOEC operation, thermal cycling (150 to 750 °C at OCV, and 600 to 800 °C at 1.3V), and redox cycling (between 50% humidified H<sub>2</sub> and 50% humidified N<sub>2</sub>). Steam cycling, mode cycling, and thermal cycling at OCV do not significantly accelerate performance degradation. Thermal cycling at 1.3V caused minimal damage within 600 to 800 °C. Full redox cycling (multi-hour oxidation holds) induced cell structural failure, while partial redox cycling (0.5 h holds) was tolerated. Extensive characterization revealed some material evolution, namely Sr and Co secondary phase formation, within the oxygen electrode due to La<sub>0.6</sub>Sr<sub>0.4</sub>Co<sub>0.2</sub>Fe<sub>0.8</sub>O<sub>3-δ</sub> instability, especially for steam cycling and mode cycling. Minimal changes were identified within the Ni-YSZ fuel electrodes. These findings provide critical insights into SOEC reliability under dynamic conditions, supporting their application in dynamic or intermittent energy systems.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"674 ","pages":"Article 239770"},"PeriodicalIF":7.9,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147388130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Onium salt derived N, S and F co-doped porous carbon electrodes for constructing high performance supercapacitors 用于构建高性能超级电容器的氮、硫、氟共掺杂多孔碳电极

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2026-05-15 Epub Date: 2026-03-03 DOI: 10.1016/j.jpowsour.2026.239759

Jiao Wu , Lingxia Liu , Xiao Liang , Yujia Wu , Jiangtao Meng , Jingkuan Li , Chunxiang Jiang

{"title":"Onium salt derived N, S and F co-doped porous carbon electrodes for constructing high performance supercapacitors","authors":"Jiao Wu , Lingxia Liu , Xiao Liang , Yujia Wu , Jiangtao Meng , Jingkuan Li , Chunxiang Jiang","doi":"10.1016/j.jpowsour.2026.239759","DOIUrl":"10.1016/j.jpowsour.2026.239759","url":null,"abstract":"<div><div>Porous carbon materials are regarded as attractive electrodes for supercapacitor on account of their unique surface area, exceptional charge transport efficiency, and remarkable stability, however, there is still a bottleneck in energy density for electric double-layer energy storage. Heteroatom doping can break through the limitation by enhancing conductivity and introducing pseudo-capacitance. Herein, a straightforward one-step pyrolysis strategy, utilizing onium salts as precursors, has been employed to synthesize carbon materials co-doped with N, S, and F heteroatoms (NSFC-T). Consequently, the optimized NSFC-800 electrode with precisely regulated heteroatom content and calcination temperature delivers 206.9 F g<sup>−1</sup> at a current density of 0.5 A g<sup>−1</sup>. Moreover, it maintains 90.77% of its initial capacitance following 10,000 consecutive cycles. The assembled NSFC-800||NSFC-800 symmetric device achieves an energy density of 5.7 W h kg<sup>−1</sup> at a power density of 247.2 W kg<sup>−1</sup>. Through the rational structural design and synergistic effects of multiple heteratoms doping, the rapid charge/discharge kinetics and cycling stability of NSFCs have been significantly improved.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"674 ","pages":"Article 239759"},"PeriodicalIF":7.9,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147388082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Natural molecular armor: Black bean extract-architected O/N coordination networks enabling durable zinc-air batteries 天然分子盔甲：黑豆提取物构建的O/N协调网络使持久的锌空气电池

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2026-05-15 Epub Date: 2026-03-04 DOI: 10.1016/j.jpowsour.2026.239791

Wenxu Liu , Yunfei Gao , Fang Guo , Yue Yin , Xuerong Zheng , Yujie Qiang , Jinfang Wu , Wenbo Wang

{"title":"Natural molecular armor: Black bean extract-architected O/N coordination networks enabling durable zinc-air batteries","authors":"Wenxu Liu , Yunfei Gao , Fang Guo , Yue Yin , Xuerong Zheng , Yujie Qiang , Jinfang Wu , Wenbo Wang","doi":"10.1016/j.jpowsour.2026.239791","DOIUrl":"10.1016/j.jpowsour.2026.239791","url":null,"abstract":"<div><div>Aqueous zinc-air batteries (ZABs) have emerged as a promising next-generation energy storage technology, offering high theoretical energy density, inherent safety, cost-effectiveness, and environmental sustainability. However, the practical application is hindered by severe zinc anode corrosion, which leads to irreversible capacity loss and limited cycle life. In this study, we introduce black bean extract (BBE) as a sustainable, plant-derived electrolyte additive to effectively address these challenges. Through systematic compositional analysis, we identify catechin, linoleic acid, oligosaccharide, pectin, and vitamin B5 as the active components in BBE, which collectively enable a corrosion inhibition efficiency of ∼90% in 6 M KOH electrolyte. The BBE additive significantly enhances the electrochemical performance of ZABs, delivering a high specific capacity of 810 mAh g<sup>−1</sup> and extending the cycling stability to 850 h. A combination of in situ spectroscopic techniques, electrochemical characterization, and theoretical analyses reveal that BBE components adsorb onto zinc anode through O- and N-containing functional groups, forming a protective interface that suppresses both self-corrosion and hydrogen evolution reactions. This work not only demonstrates the feasibility of molecular-level mechanism of plant-derived inhibitors, paving the way for sustainable electrolyte engineering in advanced metal-air battery systems.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"674 ","pages":"Article 239791"},"PeriodicalIF":7.9,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0