超级电容器
氧化钴
复合数
钴
电极
材料科学
氧化物
电化学
复合材料
化学工程
化学
冶金
工程类
物理化学
作者
Batoul Hosseinzadeh,Bhawna Nagar,Raúl Benages‐Vilau,Pedro Gómez‐Romero,Sayed Habib Kazemi
标识
DOI:10.1016/j.electacta.2021.138657
摘要
By pyrolysis of a simple Cobalt Metal Organic Framework (MOF) we have been able to synthesize a high-performance hybrid composite electrode with fibrous morphology conformal to the MOF, in a single step and at relatively low temperature (700°C). Indeed, the composite material containing cobalt oxide micro-nano-particles in highly graphitized carbon matrix (cobalt oxide/C-700) presents superb capacity of 1372 F/g (381 mAh/g) at a current density of 2.5 A/g. Besides, an asymmetric supercapacitor (ASC) was fabricated by using the Co x O y /C-700 composite as positive electrode and activated carbon (AC) as negative electrode. This ASC system delivered maximum energy density of 51.5 Wh/kg and maximum power density of 1687 W/kg
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