Journal of Electroanalytical Chemistry最新文献_第2页

Mechanical reinforcement of ultrahigh-nickel layered cathodes: zirconia interface engineering and lattice stabilization 超高镍层状阴极的机械强化：氧化锆界面工程与晶格稳定

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-10-01 DOI: 10.1016/j.jelechem.2025.119517

Jianpeng Peng , Shijie Jiang , Zhenya Sui , Guangsheng Huo , Yi Cheng , Yunjiao Li , Zhenjiang He

{"title":"Mechanical reinforcement of ultrahigh-nickel layered cathodes: zirconia interface engineering and lattice stabilization","authors":"Jianpeng Peng , Shijie Jiang , Zhenya Sui , Guangsheng Huo , Yi Cheng , Yunjiao Li , Zhenjiang He","doi":"10.1016/j.jelechem.2025.119517","DOIUrl":"10.1016/j.jelechem.2025.119517","url":null,"abstract":"<div><div>High‑nickel layer cathodes are widely used in electric vehicles for their high energy density, with research now focusing on ultrahigh‑nickel materials (Ni ≥ 90 %). However, increased nickel content induces severe anisotropic strain during phase transitions, causing lattice distortions and microcrack formation. This study presents a dual-modification approach using ZrO₂ coating and Zr doping to enhance structural stability. Comprehensive characterization (spherical aberration-corrected TEM, XRD, SEM) confirmed uniform ZrO₂ coating formation. In-situ XRD with ex-situ SEM analysis showed the modified material exhibits reduced and delayed phase transitions, minimizing mechanical degradation. Micro-compression tests demonstrated improved crushing strength (63.97 MPa vs. 49.08 MPa for unmodified W90-P). Electrochemical testing (2.8–4.3 V, 1C) revealed superior cycling stability, with 87.28 % capacity retention after 300 cycles compared to 75.66 % for the unmodified cathode. XPS analysis indicated fewer surface side products, confirming the ZrO₂ coating effectively suppresses cathode-electrolyte side reactions. The synergistic surface coating and bulk doping strategy successfully mitigates heterogeneous strain-induced structural degradation while enhancing interfacial stability. These findings provide important insights for developing advanced ultrahigh‑nickel cathode materials with improved mechanical and electrochemical performance.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"998 ","pages":"Article 119517"},"PeriodicalIF":4.1,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fe, N co-doped bifunctional carbon materials derived from ZIF-67 for high-performance zinc-air batteries 由ZIF-67衍生的高性能锌空气电池用铁、氮共掺杂双功能碳材料

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-10-01 DOI: 10.1016/j.jelechem.2025.119516

Zichen Liu , Qingshan Li , Guoyu Wang , Xiyang Dai , Yuanna Sun

{"title":"Fe, N co-doped bifunctional carbon materials derived from ZIF-67 for high-performance zinc-air batteries","authors":"Zichen Liu , Qingshan Li , Guoyu Wang , Xiyang Dai , Yuanna Sun","doi":"10.1016/j.jelechem.2025.119516","DOIUrl":"10.1016/j.jelechem.2025.119516","url":null,"abstract":"<div><div>Breakthroughs in engineering high-efficiency non-noble electrocatalysts represent the cornerstone for enabling mass commercialization of zinc-air batteries (ZABs). A fundamental research challenge involves concurrently enhancing the electronic conduction and porous architectures of ZIF-67-derived catalysts for both oxygen evolution reaction (OER) and the oxygen reduction reaction (ORR). In this study, ZIF-67 serves as a precursor, and a non-precious, highly active bifunctional catalyst, N/FeCoNC (800), is successfully fabricated through Fe, N co-doping. The material features a three-dimensional interconnected pore structure, which in addition to merely enhancing the surface area and porosity, also demonstrates excellent electrical conductivity, where both the OER and ORR processes in ZABs are accelerated. Regarding ORR efficiency, N/FeCoNC (800) exhibits a high onset potential (E<sub>onset</sub>) reaching 0.93 V (vs. Reversible Hydrogen Electrode (RHE)), a half-wave potential (E<sub>1/2</sub>) reaching 0.83 V (vs. RHE), and a limiting current density (JL) of 4.3 mA cm<sup>−2</sup>, in line with commercial Pt/C (0.95 V, 0.85 V, 4.4 mA cm<sup>−2</sup>). The catalyst demonstrates exceptional oxygen reduction performance, maintaining a near-ideal 4e<sup>−</sup> pathway (<em>n</em> = 3.91–3.99) with 91 % current retention after prolonged 30,000-s operation, indicating strong long-term stability. For OER performance, N/FeCoNC (800) exhibits a low overpotential (273 mV) as well and a favorable electrochemical active surface area (19.75 mF cm<sup>−2</sup>). ZABs assembled with this catalyst shows excellent electrochemical stability, cycling for over 850 h. This study suggests a cutting-edge solution for synthesizing efficient bifunctional precious-metal-free catalysts from doped ZIFs composite materials.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"998 ","pages":"Article 119516"},"PeriodicalIF":4.1,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145218995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electronic modulation of cobalt active sites via copper doping in ferrocene-based metal-organic frameworks for enhanced oxygen evolution reaction 二茂铁基金属-有机骨架中铜掺杂对钴活性位点的电子调制促进析氧反应

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-10-01 DOI: 10.1016/j.jelechem.2025.119520

Yue Liu , Jinsong Hu , Zengyuan Li , Qianxi shi , Xu Chen , Yanan Li , Zhi Li , Huiying Yao

{"title":"Electronic modulation of cobalt active sites via copper doping in ferrocene-based metal-organic frameworks for enhanced oxygen evolution reaction","authors":"Yue Liu , Jinsong Hu , Zengyuan Li , Qianxi shi , Xu Chen , Yanan Li , Zhi Li , Huiying Yao","doi":"10.1016/j.jelechem.2025.119520","DOIUrl":"10.1016/j.jelechem.2025.119520","url":null,"abstract":"<div><div>Modulating the electronic states of metal active sites offers a promising strategy for optimizing the electrocatalytic performance of MOF-based materials in the energy chemistry field. Here an efficient CoCuFc-MOF catalyst was synthesized by in situ introduction of copper ions during the synthesis process of CoFc-MOF via solvothermal method. The findings indicate that while the coordination configuration of CoFc-MOF remains preserved, the electronic structure of cobalt catalytic sites undergoes modulation through electron adsorption effect induced by copper atom doping. Thus, the optimized Cu<sub>1</sub>Co<sub>2</sub>Fc-MOF exhibits a 238 mV OER overpotential at 10 mA·cm<sup>−2</sup>, and a 48.4 mV dec<sup>−1</sup> Tafel slope. Furthermore, only 5 % increase of overpotential is observed during 24 h durability test and a lower voltage of 1.686 V is needed to perform overall water splitting experiment. Surprisingly, DFT computations disclose that copper integration within the CoFc-MOF architecture significantly modulates the electronic configuration of cobalt active sites, consequently restructuring the rate-limiting mechanism in the OER pathway. It dramatically reduces the theoretical overpotential from 0.546 V in Cu<sub>1</sub>Co<sub>4</sub>Fc-MOF to 0.173 V in Cu<sub>1</sub>Co<sub>2</sub>Fc-MOF by converting OER rate-determining step from *OOH to O<sub>2</sub> to *OH to *O.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"998 ","pages":"Article 119520"},"PeriodicalIF":4.1,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nickel abundant NiS/NiSe2 heterostructure electrode for high performance supercapacitor 高性能超级电容器用富镍NiS/NiSe2异质结构电极

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-10-01 DOI: 10.1016/j.jelechem.2025.119525

Rencheng Jin, Xin Wu, Jinming Liu, Ruiqian Li, Huizhu Yu

{"title":"Nickel abundant NiS/NiSe2 heterostructure electrode for high performance supercapacitor","authors":"Rencheng Jin, Xin Wu, Jinming Liu, Ruiqian Li, Huizhu Yu","doi":"10.1016/j.jelechem.2025.119525","DOIUrl":"10.1016/j.jelechem.2025.119525","url":null,"abstract":"<div><div>Transition metal chalcogenides have been attracted extensive attention for the good conductivity and high specific capacitance when used as faraday pseudo-capacitors. And the Faradic electrode with efficient electrons/ions migration channels is essential for high performance supercapacitors. Here, we introduce a facile strategy to fabricate NiS/NiSe<sub>2</sub> heterostructure for application as supercapacitor electrode. The abundant conductive Ni and NiS-NiSe<sub>2</sub> heterostructure can offer high electrons/ions mobilities, promote the strong attraction of OH- ions on the NiSe<sub>2</sub> side and the phase boundaries, therefore enables a specific capacitance of 1034 F g<sup>−1</sup> at 1 A g<sup>−1</sup>) and excellent rate performance (678 and 484.4 F g<sup>−1</sup> at 10 and 20 A g<sup>−1</sup>, respectively). As positive electrode for asymmetric supercapacitor, the NiS/NiSe<sub>2</sub>//YP-50F exhibits the energy density of 41.1 and 15.3 Wh kg<sup>−1</sup> at a power density of 0.84 kW kg<sup>−1</sup> and 12.8 kW kg<sup>−1</sup>, respectively. Furthermore, the electrode presents good cyclic stability after 2000 cycles at 1 A g<sup>−1</sup>.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"997 ","pages":"Article 119525"},"PeriodicalIF":4.1,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145217476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Doping and defect engineering synergistically enhance sodium ion storage in surface-amorphized MnO2 掺杂和缺陷工程协同增强了表面非晶化二氧化锰中钠离子的储存

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-10-01 DOI: 10.1016/j.jelechem.2025.119519

Jie Hu , Shuyan Chen , Qiyan Zhao , Xunping Zhou , Xiaoli Pan , Ning Di , Yu Deng , Jianghua Wu

引用次数: 0

Low-cost reflux condensation-synthesized nickel cobalt phosphate as an ultra-low overpotential electrode for HER and OER 低成本回流冷凝-合成磷酸钴镍作为HER和OER的超低过电位电极

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-10-01 DOI: 10.1016/j.jelechem.2025.119524

Pooja K. Bhoj , Desta M. Ulisso , I.W.P. Chen , Jaeyeong Heo , Jyotiprakash B. Yadav , Anil V. Ghule

{"title":"Low-cost reflux condensation-synthesized nickel cobalt phosphate as an ultra-low overpotential electrode for HER and OER","authors":"Pooja K. Bhoj , Desta M. Ulisso , I.W.P. Chen , Jaeyeong Heo , Jyotiprakash B. Yadav , Anil V. Ghule","doi":"10.1016/j.jelechem.2025.119524","DOIUrl":"10.1016/j.jelechem.2025.119524","url":null,"abstract":"<div><div>Recently, there has been a growing focus on creating affordable nanostructured electrode materials with outstanding water-splitting capabilities as a promising replacement for precious metal-based materials. Consequently, designing effective bifunctional electrodes for water splitting presents a significant challenge for researchers working in the energy sector around the globe. With this motivation, in this study, we report a facile and efficient synthesis of nickel cobalt phosphate on flexible stainless steel mesh (NCP@FSSM), employing a reflux condensation deposition technique. The as-synthesized electrode delivers ultra-low overpotentials of 230 mV and 101 mV at 10 mA cm<sup>−2</sup> for the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), respectively, positioning it as a high-performance candidate for overall water splitting. Moreover, long-term durability tests reveal robust operational stability with the NCP@FSSM electrode maintaining performance over 80 h for OER and 50 h for HER, meeting a key requirement for commercial viability. The superior electrochemical characteristics of the NCP@FSSM electrode are attributed to its low overpotential, high electrochemical surface area (ECSA), high turnover frequency (TOF) number, good faradic efficiency, and elevated mass activity, which drives efficient electrocatalysis. Additionally, the unique binder-free nanorod architecture ensures a dense distribution of active sites and a synergistic interaction among nickel, cobalt, and phosphorus, optimizing both HER and OER performance. The abovementioned results designate that the NCP@FSSM electrode is a promising bifunctional electrode for the water-splitting application.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"998 ","pages":"Article 119524"},"PeriodicalIF":4.1,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Retraction notice to “Novel glycoluril pharmaceutically active compound as a green corrosion inhibitor for the oil and gas industry” [J. Electroanal. Chem. 907 (2022) 116055] “新型羟基脲类药物活性化合物作为石油和天然气工业的绿色缓蚀剂”的撤回通知[J]。Electroanal。化学。907 (2022)116055]

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-10-01 DOI: 10.1016/j.jelechem.2025.119504

Elyor Berdimurodov , Abduvali Kholikov , Khamdam Akbarov , Lei Guo , Savaş Kaya , Dakeshwar Kumar Verma , Mohamed Rbaa , Omar Dagdag

引用次数: 0

First-principles study on O-doped two-dimensional MoB/graphene heterojunction as a cathode material for lithium‑sulfur batteries o掺杂二维MoB/石墨烯异质结作为锂硫电池正极材料的第一性原理研究

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-10-01 DOI: 10.1016/j.jelechem.2025.119527

Jintao Chang , Jihong Li , Hongtao Xue , Fuling Tang

{"title":"First-principles study on O-doped two-dimensional MoB/graphene heterojunction as a cathode material for lithium‑sulfur batteries","authors":"Jintao Chang , Jihong Li , Hongtao Xue , Fuling Tang","doi":"10.1016/j.jelechem.2025.119527","DOIUrl":"10.1016/j.jelechem.2025.119527","url":null,"abstract":"<div><div>Lithium‑sulfur batteries have attracted significant attention because of their high energy density and cost-effectiveness. However, their cathode materials continue to face some challenges, including poor electrical conductivity, pronounced shuttle effects, and the structural instability of two-dimensional materials. As a cathode material in lithium‑sulfur batteries, two-dimensional MoB exhibits excessive adsorption energy for long-chain polysulfides, which negatively impacts the charge-discharge cycle. Graphene provides a high-conductivity scaffold to reinforce structural integrity. MoB/graphene heterostructure is proposed with doping oxygen atoms onto its surface, where the oxygen concentration is controlled to adjust both conductivity and polysulfide adsorption energy. The first-principles calculations and molecular dynamics were used to systematically assess the structural stability, conductivity, and polysulfide adsorption of the oxygen-doped MoB/graphene heterostructure. As oxygen concentration increases, conductivity decreases and adsorption energy increases. However, excessive oxygen doping harms the charge-discharge cycle. Consequently, we select an optimal oxygen concentration to balance Li<sub>2</sub>S adsorption, avoiding both shuttle effects and excessive adsorption energy that reduce cycling efficiency. This work establishes a dual-strategy framework-heterostructure engineering combined with controlled oxygen doping-for 2D transition metal borides (MBene) cathodes, enabling tailored conductivity-adsorption balance and enhanced electrochemical performance.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"998 ","pages":"Article 119527"},"PeriodicalIF":4.1,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced surface reactivity of single-layer FeNi hydroxide via hydrogenation: a platform for hydrogen production and Na-ion storage 通过加氢提高单层氢氧化镍的表面反应性：一个制氢和钠离子储存的平台

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-10-01 DOI: 10.1016/j.jelechem.2025.119521

Hazem Abdelsalam , Mohamed Abdel Rafea , Mahmoud A.S. Sakr , Ghada M. Abdelrazek , Magdi E.A. Zaki , Omar H. Abd-Elkader , Qinfang Zhang

{"title":"Enhanced surface reactivity of single-layer FeNi hydroxide via hydrogenation: a platform for hydrogen production and Na-ion storage","authors":"Hazem Abdelsalam , Mohamed Abdel Rafea , Mahmoud A.S. Sakr , Ghada M. Abdelrazek , Magdi E.A. Zaki , Omar H. Abd-Elkader , Qinfang Zhang","doi":"10.1016/j.jelechem.2025.119521","DOIUrl":"10.1016/j.jelechem.2025.119521","url":null,"abstract":"<div><div>This study meticulously investigates the structural, electronic, and electrochemical properties of single-layer hydroxides (SLH) composed of mixed iron (Fe) and nickel (Ni) using computational methods. We specifically examine the optimized structures of pristine and hydrogenated SLH-FeNi, revealing that hydrogenation introduces hydroxyl (OH) groups and slight structural distortions to the initially planar configuration. Stability analyses, based on binding energy calculations, indicate that pristine SLH-FeNi exhibits greater stability (BE = 6.417 eV) compared to its hydrogenated counterpart (BE = 5.216 eV), suggesting that hydrogenation weakens internal bonding. Electronic property analysis shows that hydrogenation reduces the HOMO-LUMO energy gap from 1.402 eV in pristine SLH-FeNi to 0.423 eV in SLH-FeNi-H, implying enhanced electronic conductivity upon hydrogenation. Furthermore, we explore the impact of doping SLH-FeNi and SLH-FeNi-H with Cu and Zn, observing that Cu doping generally enhances stability while Zn doping increases surface reactivity. In the context of sodium-ion battery applications, pristine SLH-FeNi demonstrates a high theoretical capacity of 1069.344 mA h/g, with Cu and Zn doping maintaining comparable capacities, while hydrogenation reduces capacity. Finally, we investigate the interaction of SLH-FeNi with hydrogen-containing molecules (BH<sub>3</sub>, NH<sub>3</sub>, CH<sub>3</sub>OH), analyzing adsorption energies, bond lengths, and electronic properties to assess its potential for catalytic hydrogen production. These findings provide a design platform for tuning SLH-FeNi properties toward bifunctional energy applications.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"998 ","pages":"Article 119521"},"PeriodicalIF":4.1,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Flexible solid-state asymmetric supercapacitors based on cobalt oxide@N/O-doped carbon nanofiber and manganese oxide@N/O-doped carbon nanofiber fabrics as binder-free electrodes 基于钴oxide@N/ o掺杂碳纳米纤维和锰oxide@N/ o掺杂碳纳米纤维织物作为无粘结剂电极的柔性固态不对称超级电容器

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-09-30 DOI: 10.1016/j.jelechem.2025.119518

Jyoti Singh , SK Safdar Hossain , Arup Choudhury , Akbar Niaz , Mohammed E. Ali Mohsin , Duck-Joo Yang

{"title":"Flexible solid-state asymmetric supercapacitors based on cobalt oxide@N/O-doped carbon nanofiber and manganese oxide@N/O-doped carbon nanofiber fabrics as binder-free electrodes","authors":"Jyoti Singh , SK Safdar Hossain , Arup Choudhury , Akbar Niaz , Mohammed E. Ali Mohsin , Duck-Joo Yang","doi":"10.1016/j.jelechem.2025.119518","DOIUrl":"10.1016/j.jelechem.2025.119518","url":null,"abstract":"<div><div>In the past few years, flexible supercapacitors have received a lot of attention because of their potential and ability to be integrated into wearable devices. However, they are still restricted in their practical application due to their limited energy density. Here, transition metal oxide anchored N/O-doped carbon nanofiber (N/O-CNF) hybrid fabrics were fabricated by thermal decomposition of electrospun poly(acrylonitrile-<em>co</em>-1-vinylimidazole) fibers hybridized with metal-organic framework (MOFs) such as cobalt-MOFs or manganese-MOFs. As a result of the synergetic effects of highly capacitive transition metal oxides such as Co<sub>3</sub>O<sub>4</sub> or MnO<sub>2</sub> and the highly conductive porous N/O-doped CNF on the electrochemistry of hybrid fibers, the capacitive performances of Co<sub>3</sub>O<sub>4</sub>@N/O-CNF and MnO<sub>2</sub>@N/O-CNF hybrids have greatly improved. All-solid-state asymmetric supercapacitors (ASCs) were constructed using Co<sub>3</sub>O<sub>4</sub>@N/O-CNF hybrid fabric as a positive electrode, MnO<sub>2</sub>@N/O-CNF hybrid fabric as a negative electrode and a KOH or Na<sub>2</sub>SO<sub>4</sub>-loaded P(AN-<em>co</em>-VIM) gel electrolyte. The asymmetric supercapacitors with two different hybrid electrodes having different working potential windows are optimized to cycle reversibly at a high voltage window and deliver superior energy densities of 68.2 and 43.4 Wh kg<sup>−1</sup> at a power density of 200 W kg<sup>−1</sup> in 6 M KOH and 1 M Na<sub>2</sub>SO<sub>4</sub> electrolytes, respectively. The flexible ASCs can power commercial light-emitting diodes (LEDs), demonstrating their potential as next-generation storage for wearable electronics.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"998 ","pages":"Article 119518"},"PeriodicalIF":4.1,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0