假电容
材料科学
氧化物
电化学
超级电容器
储能
能量密度
电化学储能
电容器
电解质
功率密度
电极
纳米技术
工程物理
冶金
化学
电压
电气工程
工程类
热力学
物理
功率(物理)
物理化学
作者
Veronica Augustyn,Patrice Simon,Bruce Dunn
摘要
Electrochemical energy storage technology is based on devices capable of exhibiting high energy density (batteries) or high power density (electrochemical capacitors). There is a growing need, for current and near-future applications, where both high energy and high power densities are required in the same material. Pseudocapacitance, a faradaic process involving surface or near surface redox reactions, offers a means of achieving high energy density at high charge–discharge rates. Here, we focus on the pseudocapacitive properties of transition metal oxides. First, we introduce pseudocapacitance and describe its electrochemical features. Then, we review the most relevant pseudocapacitive materials in aqueous and non-aqueous electrolytes. The major challenges for pseudocapacitive materials along with a future outlook are detailed at the end.
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