2015
DOI: 10.1021/acs.jpclett.5b01650
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Revised Oxygen Evolution Reaction Activity Trends for First-Row Transition-Metal (Oxy)hydroxides in Alkaline Media

Abstract: First-row transition-metal oxides and (oxy)hydroxides catalyze the oxygen evolution reaction (OER) in alkaline media. Understanding the intrinsic catalytic activity provides insight into improved catalyst design. Experimental and computationally predicted activity trends, however, have varied substantially. Here we describe a new OER activity trend for nominally oxyhydroxide thin films of Ni(Fe)O(x)H(y) > Co(Fe)O(x)H(y) > FeO(x)H(y)-AuO(x) > FeO(x)H(y) > CoO(x)H(y) > NiO(x)H(y) > MnO(x)H(y). This intrinsic tre… Show more

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Cited by 458 publications
(598 citation statements)
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“…[1][2][3][4][5][6][7] Next to scarce noble metal oxides, several first-row transition metal oxides and, in particular, perovskite-based systems with the general formula ABO 3 perform well as OER catalysts. [6][7][8][9][10] Theoretical studies suggest that the catalytic activity of the four-electron transfer reaction forming molecular O 2 depends on strength and flexibility of the metal-oxygen bond, which can shift the redox activity from metal to lattice oxygen surface sites due to ligand hole formation. [7,28,34,39,40] Thus, an understanding of the underlying microscopic mechanisms, the nature of active sites, and catalyst stability is necessary to rationalize the search for active and stable catalysts.…”
Section: Introductionmentioning
confidence: 99%
“…[1][2][3][4][5][6][7] Next to scarce noble metal oxides, several first-row transition metal oxides and, in particular, perovskite-based systems with the general formula ABO 3 perform well as OER catalysts. [6][7][8][9][10] Theoretical studies suggest that the catalytic activity of the four-electron transfer reaction forming molecular O 2 depends on strength and flexibility of the metal-oxygen bond, which can shift the redox activity from metal to lattice oxygen surface sites due to ligand hole formation. [7,28,34,39,40] Thus, an understanding of the underlying microscopic mechanisms, the nature of active sites, and catalyst stability is necessary to rationalize the search for active and stable catalysts.…”
Section: Introductionmentioning
confidence: 99%
“…The behavior of Fe-doped Ni (Fe:Ni) oxide films under basic conditions (1 M KOH) has been revisited (9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19) and in this recent body of work, the role of Fe in these films has come under debate. X-ray absorption spectra of Fe:Ni oxide films supported by computational studies have led to the contention that Fe 3+ species are the active sites for water oxidation (13).…”
mentioning
confidence: 99%
“…X-ray absorption spectra of Fe:Ni oxide films supported by computational studies have led to the contention that Fe 3+ species are the active sites for water oxidation (13). The conductivity of the metal (Ni and Co) oxido framework has been observed to increase with Fe content, with the oxide also potentially serving as a scaffold for Fe active sites (16,17). Interestingly, unary Fe oxide films, however, are inferior OER catalysts.…”
mentioning
confidence: 99%
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“…Theoretical modelling and experiments by Diaz-Morales et al [39], and results from a variant of scanning electrochemical microscopy designed by Ahn and Bard [53], furthermore support the assignment of Fe as the active site. Furthermore, it has been proposed that even the poor OER activity of pure FeOOH does not match with a revised general trend for transition metal oxyhydroxides [54], and that a high intrinsic activity of Fe sites could be masked by the lack of electronic conductivity in…”
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confidence: 99%