Potassium ferrate(VI) and decomposed K2FeO4 assisted methanol electro-oxidation in alkaline media |
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| Authors: | Zhihua Xu Juncheng Hu Shuibin Yang Wen Lu |
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| Affiliation: | a College of Chemistry and Applied Chemistry, Huanggang Normal University, Huanggang 438000, PR China
b Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission and Ministry of Education, South-Central University for Nationalities, Wuhan 430074, PR China |
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| Abstract: | The cyclic voltammograms (CVs) and current-time curves of methanol electro-oxidation, assisted by K2FeO4, decomposed K2FeO4 and Fe(NO3)3 added in strong alkaline solution, were investigated on a Pt electrode. The results show that Fe(NO3)3 and K2FeO4, especially decomposed K2FeO4, can promote the activity and poisoning tolerance of a Pt electrocatalyst for methanol oxidation in alkaline solution. We propose that iron(III)-containing compounds such as Fe(OH)3 and FeOOH in a strong alkaline solution tend to encourage the formation of OH adsorption (OHads) species, which are necessary for the promotion of the CO-like intermediates of oxidation on the Pt electrode. |
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| Keywords: | Electro-oxidation Direct methanol fuel cell (DMFC) Ferrate(VI) |
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