电极
化学
电化学
超级电容器
电解质
化学工程
钴
电化学能量转换
电化学储能
储能
材料科学
循环伏安法
氧化钴
阳极
作者
Jian-Fei Gao,Jing-Feng Hou,Ling-Bin Kong
标识
DOI:10.1016/j.jelechem.2021.115496
摘要
Abstract Polymer materials and inorganic non-metallic materials have been extensively investigated as electrode materials, but there is very little research on metal materials. Herein, we report a simple NH3-induced reduction process to synthesize metallic Co nanoparticles, and explore them as electrode materials for supercapacitors for the first time. The metallic Co presents a specific capacity of 80C g−1 (209F g−1) at 0.5 Ag−1, higher than the 40C g−1 (105F g−1) of Co3O4. And the capacity retention is 114% after 10,000 cycles. Besides, the as-assembled metallic Co//activated carbon hybrid supercapacitor can achieve the maximum energy density of 12.8 W h kg−1 at 197.1 W kg−1.
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