Nickel-Nitrogen-Modified Graphene: An Efficient Electrocatalyst for the Reduction of Carbon Dioxide to Carbon Monoxide

Panpan Su; Kazuyuki Iwase; Shuji Nakanishi; Kazuhito Hashimoto; Kazuhide Kamiya

doi:10.1002/smll.201602158

Nickel-Nitrogen-Modified Graphene: An Efficient Electrocatalyst for the Reduction of Carbon Dioxide to Carbon Monoxide

Small. 2016 Nov;12(44):6083-6089. doi: 10.1002/smll.201602158. Epub 2016 Sep 16.

Authors

Panpan Su¹, Kazuyuki Iwase¹, Shuji Nakanishi², Kazuhito Hashimoto¹, Kazuhide Kamiya¹

Affiliations

¹ Department of Applied Chemistry, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan.
² Research Center for Solar Energy Chemistry, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka, 560-8531, Japan.

PMID: 27634486
DOI: 10.1002/smll.201602158

Abstract

Nickel-nitrogen-modified graphene (Ni-N-Gr) is fabricated and Ni-N coordination sites on Ni-N-Gr as active centers effectively reduce CO₂ to CO. The faradaic efficiency for CO formation reaches 90% at -0.7 to -0.9 V versus RHE, and the turnover frequency for CO production comes up to ≈2700 h^-1 at -0.7 V versus RHE.

Keywords: CO2 reduction; N-doped graphene; electrocatalysis; single Ni atom.