{"title":"Development of NiS and Biomass-Derived Carbon Spheres Composite for High-Performance Supercapacitor Electrodes","authors":"Mahima Sheoran, Rohit Sharma, Sunil Ojha, Anit Dawar, Om Prakash Sinha","doi":"10.1002/est2.70224","DOIUrl":null,"url":null,"abstract":"<div>\n \n <p>The development of innovative and efficient energy storage technologies has become a critical concern in modern society due to the ongoing depletion of conventional power reserves and increasing environmental pollution. To address the rising current and future energy demands, it is imperative to implement a “Green” strategy that leverages the numerous accessible energy sources, minimizing environmental impact while deriving value from waste. Consequently, this study reports the synthesis of a nickel sulfide and onion peel-derived carbon sphere composite (NiS/OPCS) through an economical hydrothermal process. The synthesized composite has been optimized using various characterization techniques. Electrochemical performance was optimized through cyclic voltammetry (CV), galvanostatic charge–discharge (GCD), and electrochemical impedance spectroscopy (EIS) analyses. The NiS/OPCS composite demonstrated exceptional retention of 95.66% after 6000 cycles, with a significant specific capacitance value of 707 F/g at 1 A/g current density. Both capacitive-controlled and diffusion-controlled mechanisms were found to contribute significantly to charge storage. Therefore, NiS/OPCS is a promising candidate as an electrode material for supercapacitor applications.</p>\n </div>","PeriodicalId":11765,"journal":{"name":"Energy Storage","volume":"7 5","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Energy Storage","FirstCategoryId":"1085","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/est2.70224","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
The development of innovative and efficient energy storage technologies has become a critical concern in modern society due to the ongoing depletion of conventional power reserves and increasing environmental pollution. To address the rising current and future energy demands, it is imperative to implement a “Green” strategy that leverages the numerous accessible energy sources, minimizing environmental impact while deriving value from waste. Consequently, this study reports the synthesis of a nickel sulfide and onion peel-derived carbon sphere composite (NiS/OPCS) through an economical hydrothermal process. The synthesized composite has been optimized using various characterization techniques. Electrochemical performance was optimized through cyclic voltammetry (CV), galvanostatic charge–discharge (GCD), and electrochemical impedance spectroscopy (EIS) analyses. The NiS/OPCS composite demonstrated exceptional retention of 95.66% after 6000 cycles, with a significant specific capacitance value of 707 F/g at 1 A/g current density. Both capacitive-controlled and diffusion-controlled mechanisms were found to contribute significantly to charge storage. Therefore, NiS/OPCS is a promising candidate as an electrode material for supercapacitor applications.
由于常规电力储备的不断枯竭和环境污染的日益严重,发展创新高效的储能技术已成为现代社会关注的焦点。为了应对当前和未来不断增长的能源需求,必须实施“绿色”战略,利用众多可获得的能源,最大限度地减少对环境的影响,同时从废物中获取价值。因此,本研究报告了通过经济的水热法合成硫化镍和洋葱皮衍生的碳球复合材料(NiS/OPCS)。利用各种表征技术对合成的复合材料进行了优化。通过循环伏安法(CV)、恒流充放电法(GCD)和电化学阻抗谱(EIS)分析优化了电化学性能。NiS/OPCS复合材料在6000次循环后的保留率为95.66%,在1 a /g电流密度下的比电容值为707 F/g。电容控制和扩散控制机制都对电荷存储有重要贡献。因此,NiS/OPCS是一种很有前途的超级电容器电极材料。