Jump to main content
Jump to site search


Copper-Modulated Nanocrystal Bismuth Alters Formate Formation Pathway to Achieve Highly Selective CO2 Electroreduction

Abstract

The electrochemical reduction reaction of CO2 (CO2RR) has attracted significant interest recently, as it is a possible reaction for the storage of renewable energy. However, this approach involves highly complex multistep reactions, and for efficient electroconversion of CO2 to formate, the CO and H2 production must be suppressed. We incorporated Cu element into nanocrystal Bi to modulate the local electronic environment of Bi atoms, altering the HCOOH formation pathway from the COOH* to OCHO* intermediates. Thus, the evolution of by-products CO and H2 could be significantly suppressed, and the resulting CuBi catalyst behaves excellent CO2RR performance for maintaining high FEHCOOH about 90 % in a wide range of negative potentials (-0.8 to -1.5 V vs RHE) and achieves high jHCOOH beyond -60 mA cm-2, which surpasses most CO2RR catalysts for HCOOH. This work opens up a strategy to alter the formate formation pathway for a CO2RR catalyst, effectively suppressing the evolution of CO and H2 by-products in aqueous media, and achieving high jHCOOH.

Back to tab navigation

Supplementary files

Publication details

The article was received on 06 Jun 2018, accepted on 05 Aug 2018 and first published on 08 Aug 2018


Article type: Communication
DOI: 10.1039/C8TA05355C
Citation: J. Mater. Chem. A, 2018, Accepted Manuscript
  •   Request permissions

    Copper-Modulated Nanocrystal Bismuth Alters Formate Formation Pathway to Achieve Highly Selective CO2 Electroreduction

    M. Zu, L. Zhang, C. Wang, L. Zheng and H. Yang, J. Mater. Chem. A, 2018, Accepted Manuscript , DOI: 10.1039/C8TA05355C

Search articles by author

Spotlight

Advertisements