文章基本信息

标题：Influence of iron doping on tetravalent nickel content in catalytic oxygen evolving films
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作者：Nancy Li ; D. Kwabena Bediako ; Ryan G. Hadt 等
期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：2017
卷号：114
期号：7
页码：1486-1491
DOI：10.1073/pnas.1620787114
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：Iron doping of nickel oxide films results in enhanced activity for promoting the oxygen evolution reaction (OER). Whereas this enhanced activity has been ascribed to a unique iron site within the nickel oxide matrix, we show here that Fe doping influences the Ni valency. The percent of Fe³⁺ doping promotes the formation of formal Ni⁴⁺, which in turn directly correlates with an enhanced activity of the catalyst in promoting OER. The role of Fe³⁺ is consistent with its behavior as a superior Lewis acid.
关键词：water splitting ; renewable energy ; electrocatalysis ; oxygen evolution reaction ; catalysis