纳米片
双金属片
超级电容器
材料科学
电极
纳米技术
储能
金属有机骨架
化学工程
电容
化学
金属
冶金
工程类
有机化学
功率(物理)
物理
物理化学
量子力学
吸附
作者
Yanqiu Xie,Haopeng Zhang,Kai Zhang,Rongrong Liu,Yuxi Sun,Xin Gao,Bin He,Yao Feng,Hongyan Yue
标识
DOI:10.1016/j.electacta.2024.143784
摘要
Bimetallic organic frameworks possess distinctive structural and component benefits that make them essential materials for energy storage devices with outstanding capabilities. Here, ultra-thin 2D VNi-MOF nanosheet arrays (NSAs) have been in-situ grown on nickel foam (NF) which served as both the current collector and the Ni source by pretreatment and one-step solvothermal method and used as an efficient electrode material for high performance supercapacitors. Benefiting from its ultra-thin 2D NSAs structure and the synergy of bimetallic ions, the VNi-MOF NSAs/NF exhibits a high specific capacity performance (516.5 C g−1 at 1 A g−1) and outstanding cycling stability (85.6 % capacity retention over 12, 000 cycles at 20 A g−1). Battery-type VNi-MOF NSAs/NF and capacitive-type AC are integrated to assemble a HSC. The prototype HSC achieves a remarkably high energy density of 43 Wh kg−1 (at 800 W kg−1), which demonstrates the great potential of VNi-MOF (bimetallic organic framework) as a HSC electrode.
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