| Literature DB >> 28137835 |
Nancy Li1, D Kwabena Bediako1, Ryan G Hadt2, Dugan Hayes2, Thomas J Kempa1, Felix von Cube3, David C Bell3, Lin X Chen2,4, Daniel G Nocera5.
Abstract
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.Entities:
Keywords: catalysis; electrocatalysis; oxygen evolution reaction; renewable energy; water splitting
Year: 2017 PMID: 28137835 PMCID: PMC5321006 DOI: 10.1073/pnas.1620787114
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN: 0027-8424 Impact factor: 11.205