过电位
氢氧化物
电化学
电容
材料科学
析氧
化学工程
层状双氢氧化物
阴极
电极
超级电容器
电流密度
储能
纳米技术
化学
物理化学
物理
工程类
功率(物理)
量子力学
作者
Mengdi Wang,Xingyu Liu,Hengqi Liu,Depeng Zhao,Xiang Wu
标识
DOI:10.1016/j.jallcom.2022.163926
摘要
As important electrode materials, 2D layered double hydroxides (LDHs) have attracted much attention owing to their high reaction activity, tunable composition and unique structure. However, the poor cycling stability restricts their large scale industrial applications. To solve this problem, we fabricate several NiCo-LDH nanosheets through regulating the ratio of Ni and Co ions. The as-obtained samples are utilized as cathode for supecapacitor. Thereinto, the NiCo3-LDH product possess a specific capacitance of 699 C g−1 at 1 A g−1. The as-assembled device delivers an energy density of 90.75 W h kg−1 at 2700 W kg−1 and keep 91.84% of its initial capacitance after 10000 cycles. Moreover, as oxygen evolution reaction (OER) electrocatalysts, the obtained product presents an overpotential of 270 mV at 20 mA cm−2 and excellent cycle stability.
科研通智能强力驱动
Strongly Powered by AbleSci AI