2019
DOI: 10.1021/acsami.9b10868
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Engineering Surface Structure of Spinel Oxides via High-Valent Vanadium Doping for Remarkably Enhanced Electrocatalytic Oxygen Evolution Reaction

Abstract: Spinel oxides (AB 2 O 4 ) with unique crystal structures have been widely explored as promising alternative catalysts for efficient oxygen evolution reactions; however, developing novel methods to fabricate robust, cost-effective, and high-performance spinel oxide based electrocatalysts is still a great challenge. Here, utilizing a complementary experimental and theoretical approach, pentavalent vanadium doping in the spinel oxides (i.e., Co 3 O 4 and NiFe 2 O 4 ) has been thoroughly investigated to engineer t… Show more

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Cited by 78 publications
(56 citation statements)
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“…[1][2][3][4] V-Doped Co oxide materials have recently emerged as a promising class of alkaline OER catalysts. Previous studies of V-doped Co oxide materials show increased activity for the OER at low overpotentials, [5][6][7][8][9][10][11][12][13][14] and typically suggest that this increased activity is a result of changes to the catalyst's electronic structure and/or in increased stabilization of adsorbed OER intermediates. [5][6][7][8] In this study, we report a CoV 2 O 4 material that shows exceptional specific activity per BET surface area for the OER based on as-synthesized characterization data.…”
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confidence: 99%
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“…[1][2][3][4] V-Doped Co oxide materials have recently emerged as a promising class of alkaline OER catalysts. Previous studies of V-doped Co oxide materials show increased activity for the OER at low overpotentials, [5][6][7][8][9][10][11][12][13][14] and typically suggest that this increased activity is a result of changes to the catalyst's electronic structure and/or in increased stabilization of adsorbed OER intermediates. [5][6][7][8] In this study, we report a CoV 2 O 4 material that shows exceptional specific activity per BET surface area for the OER based on as-synthesized characterization data.…”
mentioning
confidence: 99%
“…This XPS characterization is consistent with other synthesized CoV 2 O 4 materials. 5,19 OER activity measurements were performed using previously reported protocols. 20,21 Catalyst inks were prepared by mixing the as-synthesized catalyst particles and Nafion in a water-isopropanol solution, and the resulting inks were dropcast onto polished glassy carbon electrode surfaces (0.196 cm 2 ) resulting in films with mass loadings of 0.84 mg cm À2 .…”
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