Nickel-cobalt layered double hydroxide hollow nanocages anchored on carbon nanotubes as electrode for supercapacitors

被引：8
|
作者：
Hou, Congcong [1 ]
Li, Tingting [2 ]
Zhang, Zhiming [2 ]
Chang, Chunrui [3 ]
An, Libao [1 ]
机构：
[1] North China Univ Sci & Technol, Coll Mech Engn, Tangshan 063210, Peoples R China
[2] North China Univ Sci & Technol, Coll Mat Sci & Engn, Tangshan 063210, Peoples R China
[3] North China Univ Sci & Technol, Coll Sci, Tangshan 063210, Peoples R China
来源：
MATERIALS LETTERS | 2022年 / 309卷
基金：
中国国家自然科学基金;
关键词：
Supercapacitors; Nickel-cobalt layered double hydroxide; Carbon nanotubes; Electrical properties; COMPOSITE;
D O I：
10.1016/j.matlet.2021.131361
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Herein, the nickel-cobalt layered double hydroxide/carbon nanotubes (NiCo-LDH/CNTs) composites with 3-dimentional (3D) hollow nanocages structure were fabricated. By controlling the reaction conditions, the influence of nickel source dosage on capacitance performance was evaluated. Benefiting from the synergistic effect of highly conductive CNTs and NiCo-LDH hollow nanocages which can provide rich active sites, the NiCo-LDH-120/CNTs composite displayed a high specific capacitance (1505.4 F.g(-1) at 1 Ag-1), decent rate characteristic (82.4% retention at 10 Ag-1) and superior electrochemical stabilization (72.4% retention after 2000 cycles at 10 Ag-1). The appealing electrochemical performance indicates its huge application potential in supercapacitors.
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页数：4
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