Convenient room-temperature synthesis of sulfur and nitrogen co-doped NiCo-LDH coupled with CNTs on NiCo foam as battery-type electrode for high performance hybrid supercapacitor

Li Song ¹Xiao-Hong Zhong ²Fang-Lin Wang ¹Zhi-Hui Huang ¹Zhe Hong ¹Yun-Fang Gao ³Hai-Dong Wang ¹Jian-Wei Ren ⁴Sheng-Jie Peng ⁵Lei Li¹

扫码查看

作者信息

1. College of Biological,Chemical Sciences and Engineering,Jiaxing University,Jiaxing 314001,China
2. College of Biological,Chemical Sciences and Engineering,Jiaxing University,Jiaxing 314001,China;College of Chemical Engineering,Zhejiang University of Technology,Hangzhou 310014,China;College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Research and Development Department,Jiangxi Ganfeng LiEnergy Technology Co.,Ltd.,Xinyu 338000,China
3. College of Chemical Engineering,Zhejiang University of Technology,Hangzhou,310014,China
4. Department of Mechanical Engineering Science,University of Johannesburg,Auckland Park,Johannesburg 2092,South Africa
5. College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China
折叠

Abstract

The convenient synthesis of the composite electrode with high supercapacitance performance plays an important role in practical application but is challenging.Herein,the carbon nanotubes(CNTs)coupled with low-crystalline sulfur and nitrogen co-doped NiCo-LDH(de-noted as SN-NiCo-LDH)nanosheets array are grown on NiCo foam(NCF)substrate by two convenient steps of metal induced self-assembly and corrosion engineering,which present the advantages of operating at room-temperature and low preparation costs.Benefiting from the S-N co-doping and low-crystallinity of NiCo-LDH,the prepared SN-NiCo-LDH@CNTs@NCF electrode presents a topping charge capacity of 2470 C·g-1(4.94 C·cm-2)at 5 mA·cm-2.Furthermore,the fabricated asymmetry supercapacitor(ASC)achieves an extraordinary energy density of 77 Wh·kg-1(0.617 mWh·cm-2)at a power density of 438 W·kg-1(3.5 mW·cm-2)and outstanding stability(91％capacity retention after 5000 cycles at 20 mA·cm-2).Impressively,the structure evolution of NiCo-LDH during the charge/discharge processes has been thoroughly elucidated by in-situ Raman spectra.Therefore,this work verifies a powerful strategy and practical value for preparing composite electrodes with high supercapaci-tance performance,and also provides guidance for the rational design of the smart electrodes.

Key words

Supercapacitor/NiCo-LDH/Carbon nanotubes/Sulfur and nitrogen co-doped/Convenient synthesis

引用本文复制引用

基金项目

National Natural Science Foundation of China(21978111)

National Natural Science Foundation of China(22278175)

National Natural Science Foundation of China(22108094)

Zhejiang Provincial Natural Science Foundation of China(LZ24B060001)

Zhejiang Provincial Natural Science Foundation of China(LY22E020016)

Jiaxing Key Research Project(2022BZ10001)

the"Innovation Jiaxing·Excellent Talent Support Plan"Top Talent for Innovation and Entrepreneurship()

出版年

2024

稀有金属(英文版)

中国有色金属学会

稀有金属(英文版)

CSTPCDEI

影响因子：0.801

ISSN：1001-0521

参考文献量2

段落导航