期刊
NANOSCALE
卷 12, 期 3, 页码 1921-1938出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9nr08156a
关键词
-
类别
资金
- National Natural Science Foundation of China [51672040, 51972049]
Supercapacitors with high security, excellent energy and power densities, and superior long-term cycling performance are becoming increasingly essential for flexible devices. Herein, this study has reported a novel method to synthesize CoNi2S4, which delivered a high specific capacitance of 1836.6 F g(-1) at 1 A g(-1), with a slight fluctuation in the testing temperature rising up to 50 degrees C (1855.2 F g(-1)) or decreasing to 0 degrees C (1587.6 F g(-1)). In addition, the corresponding solid-state CoNi2S4//AC HSC could achieve a high energy density of 35.8 W h kg(-1) at a power density of 800.0 W kg(-1), with nearly no change when tested at 0 degrees C and 50 degrees C, and possessed excellent long-term electrochemical cycling stability of 132.3% after 50 000 cycles; the solid-state hybrid supercapacitor using biomass-derived carbon (BC) as the negative electrode (CoNi2S4//BC HSC) could also deliver a high energy density of 38.9 W h kg(-1) at a power density of 850.0 W kg(-1) and the specific capacitance retention was 101.2% after cycling for 50 000 times. This work has provided a promising method to prepare high-performance electrode materials for solid-state hybrid supercapacitors with superior cycling stability and energy density.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据