材料科学
退火(玻璃)
超级电容器
壳体(结构)
化学工程
芯(光纤)
功率密度
电极
电容
电解质
复合材料
镍
氢氧化物
电化学
储能
层状双氢氧化物
纳米颗粒
冶金
功率(物理)
化学
物理化学
工程类
物理
量子力学
作者
Yuqiang Zhang,Yan Wang,Jiahui Zhu,Xubin Zhang,Wangfeng Cai
出处
期刊:Nanotechnology
[IOP Publishing]
日期:2021-05-31
卷期号:32 (34): 345702-345702
被引量:4
标识
DOI:10.1088/1361-6528/abe074
摘要
Abstract A flower-like structured electrode material of Co 3 O 4 @Ni–Co layered double hydroxide (LDH) grown on Ni foam (Co 3 O 4 @Ni–Co LDH/NF) was prepared via an in situ growth, annealing and electrodeposition process. The Co 3 O 4 @Ni–Co LDH/NF electrode was prepared with the optimized conditions of annealing temperature 300 °C, deposition time 20 min and Ni/Co ratio 1:1. The results showed that the as-prepared electrode material exhibited an excellent specific capacitance and great cycling stability. Furthermore, an quasi-solid-state supercapacitor was assembled using the prepared Co 3 O 4 @Ni–Co LDH/NF as the positive electrode and activated carbon on Ni foam (AC/NF) as the negative electrode. The as-assembled device presented a high energy density and power density.
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