过电位
分解水
电催化剂
析氧
电化学
排名(信息检索)
电解水
材料科学
计算机科学
纳米技术
催化作用
化学
电解
物理化学
情报检索
电极
有机化学
电解质
光催化
作者
Chao Wei,Zhichuan J. Xu
标识
DOI:10.1002/smtd.201800168
摘要
Abstract Comparing the overpotential required to reach the current density of (per geometric area of an electrode) (η@ ) is a popular method of ranking electrocatalysts for water‐splitting reactions, i.e., the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER). However, such methodology is, in essence, not reasonable for studying the intrinsic chemistry difference of electrocatalysts. To have a rational understanding of η@ , here, its historical origin and its limitations on reflecting the intrinsic electrocatalytic activity are discussed. The η@ is a valid practical parameter to assess water‐splitting devices, but it cannot determine whether a particular electrocatalyst is intrinsically active or not.
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