In-situ growth of series-connected CoNi2S4 hollow nanocages strung by carbon nanotubes for high-performance hybrid supercapacitors

IF 8.9 2区 工程技术 Q1 ENERGY & FUELS
Xinbiao Mao , Hongtao Guan , Jufeng Zhou, Wenwen Zhou, Xiaobei Shi, Xin Xu, Yunfang Gao
{"title":"In-situ growth of series-connected CoNi2S4 hollow nanocages strung by carbon nanotubes for high-performance hybrid supercapacitors","authors":"Xinbiao Mao ,&nbsp;Hongtao Guan ,&nbsp;Jufeng Zhou,&nbsp;Wenwen Zhou,&nbsp;Xiaobei Shi,&nbsp;Xin Xu,&nbsp;Yunfang Gao","doi":"10.1016/j.est.2024.114751","DOIUrl":null,"url":null,"abstract":"<div><div>For supercapacitors (SCs), there is an urgent need to develop positive materials with excellent electrochemical performance. In this work, in-situ growth of series-connected CoNi<sub>2</sub>S<sub>4</sub> hollow nanocages derived from zeolitic imidazolate framework-67 (ZIF-67) and strung by carboxylated carbon nanotubes (C-CNTs) were successfully synthesized through a two-step ordered ion etching/exchange procedure. The special connection structure and synergistic effect between CoNi<sub>2</sub>S<sub>4</sub> nanocages and C-CNTs greatly improve the electrochemical performance of the hybrid (CoNi<sub>2</sub>S<sub>4</sub>/C-CNTs), in which porous CoNi<sub>2</sub>S<sub>4</sub> hollow nanocages offer electrochemical active sites and fast ion diffusion channels, while C-CNTs provide electron transport paths. The optimized hybrid, CoNi<sub>2</sub>S<sub>4</sub>/C-CNTs20, exhibits excellent electrochemical performance with a high specific capacity (1314.6C g<sup>−1</sup> at 1 A g<sup>−1</sup>) and an impressive rate capability (72.1 % retention at 20 A g<sup>−1</sup>). Furthermore, the hybrid supercapacitor (HSC) using CoNi<sub>2</sub>S<sub>4</sub>/C-CNTs20 and active rice husk carbon (ARHC) as the positive and negative electrodes, respectively, demonstrates an outstanding energy density of 47.9 Wh kg<sup>−1</sup> at a power density of 800 W kg<sup>−1</sup> and remarkable cycling stability of 90 % at 5 A g<sup>−1</sup> after 8500 cycles. Our work will open up a brand-new strategy to oriented design electrode materials for various energy storage devices.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"105 ","pages":"Article 114751"},"PeriodicalIF":8.9000,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of energy storage","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2352152X24043378","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
引用次数: 0

Abstract

For supercapacitors (SCs), there is an urgent need to develop positive materials with excellent electrochemical performance. In this work, in-situ growth of series-connected CoNi2S4 hollow nanocages derived from zeolitic imidazolate framework-67 (ZIF-67) and strung by carboxylated carbon nanotubes (C-CNTs) were successfully synthesized through a two-step ordered ion etching/exchange procedure. The special connection structure and synergistic effect between CoNi2S4 nanocages and C-CNTs greatly improve the electrochemical performance of the hybrid (CoNi2S4/C-CNTs), in which porous CoNi2S4 hollow nanocages offer electrochemical active sites and fast ion diffusion channels, while C-CNTs provide electron transport paths. The optimized hybrid, CoNi2S4/C-CNTs20, exhibits excellent electrochemical performance with a high specific capacity (1314.6C g−1 at 1 A g−1) and an impressive rate capability (72.1 % retention at 20 A g−1). Furthermore, the hybrid supercapacitor (HSC) using CoNi2S4/C-CNTs20 and active rice husk carbon (ARHC) as the positive and negative electrodes, respectively, demonstrates an outstanding energy density of 47.9 Wh kg−1 at a power density of 800 W kg−1 and remarkable cycling stability of 90 % at 5 A g−1 after 8500 cycles. Our work will open up a brand-new strategy to oriented design electrode materials for various energy storage devices.
用碳纳米管串接CoNi2S4空心纳米笼原位生长制备高性能混合超级电容器
对于超级电容器来说,迫切需要开发具有优异电化学性能的正极材料。在这项工作中,通过两步有序离子蚀刻/交换过程,成功地原位生长了由沸石基吡唑酸骨架-67 (ZIF-67)和羧化碳纳米管(C-CNTs)串联的串联CoNi2S4空心纳米笼。CoNi2S4纳米笼与C-CNTs之间特殊的连接结构和协同效应极大地提高了CoNi2S4/C-CNTs复合材料的电化学性能,其中多孔CoNi2S4中空纳米笼提供了电化学活性位点和快速离子扩散通道,而C-CNTs提供了电子传递途径。优化后的混合物CoNi2S4/C-CNTs20具有优异的电化学性能,在1 a g−1条件下具有较高的比容量(1314.6C g−1)和较高的倍率(20 a g−1条件下保持率为72.1%)。此外,以CoNi2S4/C-CNTs20和活性稻壳碳(ARHC)为正极和负极的混合超级电容器(HSC)在功率密度为800 W kg - 1时的能量密度为47.9 Wh kg - 1,在5 a g - 1下循环8500次后的稳定性为90%。我们的工作将为各种储能装置电极材料的定向设计开辟一条全新的策略。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
Journal of energy storage
Journal of energy storage Energy-Renewable Energy, Sustainability and the Environment
CiteScore
11.80
自引率
24.50%
发文量
2262
审稿时长
69 days
期刊介绍: Journal of energy storage focusses on all aspects of energy storage, in particular systems integration, electric grid integration, modelling and analysis, novel energy storage technologies, sizing and management strategies, business models for operation of storage systems and energy storage developments worldwide.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信