首页|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

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

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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.

SupercapacitorNiCo-LDHCarbon nanotubesSulfur and nitrogen co-dopedConvenient synthesis

Li Song、Xiao-Hong Zhong、Fang-Lin Wang、Zhi-Hui Huang、Zhe Hong、Yun-Fang Gao、Hai-Dong Wang、Jian-Wei Ren、Sheng-Jie Peng、Lei Li

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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

College of Chemical Engineering,Zhejiang University of Technology,Hangzhou,310014,China

Department of Mechanical Engineering Science,University of Johannesburg,Auckland Park,Johannesburg 2092,South Africa

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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaZhejiang Provincial Natural Science Foundation of ChinaZhejiang Provincial Natural Science Foundation of ChinaJiaxing Key Research Projectthe"Innovation Jiaxing·Excellent Talent Support Plan"Top Talent for Innovation and Entrepreneurship

219781112227817522108094LZ24B060001LY22E0200162022BZ10001

2024

10.1007/s12598-024-02742-5

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
年,卷(期)：2024.43(9)
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