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Title: The comprehensive understanding of 10 mA cm(geo)−2 as an evaluation parameter for electrochemical water splitting
Authors: Wei, Chao
Xu, Jason Zhichuan
Keywords: Engineering::Materials
Issue Date: 2018
Source: Wei, C., & Xu, J. Z. (2018). The comprehensive understanding of 10 mA cm(geo)−2 as an evaluation parameter for electrochemical water splitting. Small Methods, 2(11), 1800168-. doi:10.1002/smtd.201800168
Journal: Small Methods
Abstract: Comparing the overpotential required to reach the current density of 10mA cm(geo)-2 (per geometric area of an electrode) (η@10mA cm(geo)-2) 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@ 10 mA cm(geo)-2, here, its historical origin and its limitations on reflecting the intrinsic electrocatalytic activity are discussed. The η@10mA cm(geo)-2 is a valid practical parameter to assess water-splitting devices, but it cannot determine whether a particular electrocatalyst is intrinsically active or not.
ISSN: 2366-9608
DOI: 10.1002/smtd.201800168
Rights: © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MSE Journal Articles

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