Facile synthesis of a nano-structured nickel oxide electrode with outstanding pseudocapacitive properties
Facile synthesis of a nano-structured nickel oxide electrode with outstanding pseudocapacitive properties
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轻松合成具有出色赝电容特性的纳米结构氧化镍电极
DOI:
10.1016/j.electacta.2013.05.031
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发表时间:
2013-08
影响因子:
6.6
通讯作者:
Wang, Xuefeng
中科院分区:
文献类型:
--
作者:
Wang, Huanwen;Yi, Huan;Chen, Xiao;Wang, Xuefeng
A superior electrode for high-performance supercapacitors has been designed by growing homogeneous NiO nanoparticles on conductive Ni foam substrate through a facile two-step method. The preparation strategy involves the electrodeposition of nickel hydroxide precursor on Ni foam and subsequent low-temperature annealing process. These NiO nanoparticles are interconnected with each other, forming a loose network with a highly open and porous structure. This unique 3D NiO–Ni foam electrode manifests the electrolyte penetration and ion migration as well as large electroactive surface area. As a result, outstanding pseudocapacitive performance is achieved with a high specific capacitance (2558Fg−1at 2Ag−1in a potential window of 0.5V) and excellent rate capability (70% capacity retention at 40Ag−1), which shows great potential in the development of high-performance energy-storage systems.
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影响因子:
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通讯作者:
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影响因子:
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