Journal
CHEMCATCHEM
Volume 13, Issue 22, Pages 4824-4832Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cctc.202101131
Keywords
Alkaline medium; Carbon paste electrode; Fuel cells; Metal-organic framework; Methanol electrocatalytic oxidation
Categories
Funding
- National Natural Science Foundation of China [21702143]
- Natural Science Foundation of Jiangsu Province [BK20170377]
- College of Chemistry, Molecular Engineering of Qingdao University of Science and Technology [QUSTHX201906]
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In this study, Ni-MOF-74 was successfully synthesized and showed promising electrocatalytic properties for methanol oxidation, along with high electrochemical stability.
Developing non-noble metal catalysts for methanol oxidation in fuel cells is of importance. In this work, Ni-MOF-74 was synthesized through a simple solvothermal method and fully characterized. The as-made Ni-MOF-74 modified carbon paste electrode (Ni-MOF-74/CPE) was applied for methanol electrooxidation reaction in 0.1 M NaOH solution. Ni-MOF-74 had high electrochemical stability and exhibited good electrocatalytic property for methanol oxidation, a mechanism for the reaction was proposed, the current density increases impressively on Ni-MOF-74/CPE compared with carbon paste electrode, and a really high catalytic rate constant (k(cat)) of 8.1x10(5) cm(3) . mol(-1) . s(-1) was obtained in this work. The given results indicate that Ni-MOF-74 can be a promising candidate of electrocatalysts for direct methanol fuel cells (DMFCs).
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