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Ni nanoparticle-decorated-MnO₂ nanodendrites as highly selective and efficient catalysts for CO₂ electroreduction

Author:
He, Xu-Jun, Feng, Jin-Xian, Ren, Qian, Li, Gao-Ren
Source:
Journal of materials chemistry 2018 v.6 no.40 pp. 19438-19444
ISSN:
2050-7496
Subject:
carbon dioxide, carbon fibers, catalysts, catalytic activity, energy, formates, hydrogen, manganese dioxide, nickel
Abstract:
Ni nanoparticle-decorated-MnO₂ nanodendrites supported on carbon fibers (Ni NPs/MnO₂ NDs-CFs) are reported as efficient electrocatalysts for CO₂ reduction to formate, and they exhibit low CO₂/HCOO⁻ reduction overpotential, superior catalytic activity, high formate selectivity and high faradaic efficiency of over 85%. Further studies indicate that the strong electronic interactions between Ni and MnO₂ in Ni NPs/MnO₂ NDs-CFs can realize high hydrogen storage capacity and low energy barriers of the intermediates and products and can obviously promote the selective electroreduction of CO₂ to formate. Furthermore, the electronic interactions induced by metal–metal oxide composites will promote the development of next generation high-performance catalysts for CO₂ reduction.
Agid:
6172477