Synthesis of Tunable Syngas on Cobalt-Based Catalysts towards Carbon Dioxide Reduction.

Impact Factor:

3.154

DOI number:

10.1002/cnma.202000529

Journal:

ChemNanoMat

Key Words:

Co catalysts, CO2 electroreduction, syngas synthesis, Carbon dioxide, Doping (additives), Electrolytic reduction, Pollution control, Carbon dioxide reduction, Co-existence, Cobalt-based catalysts, Electro reduction, Faradaic efficiencies, Renewable electricity, Reversible hydrogen electrodes, Structural characterization, Synthesis gas

Abstract:

CO2 electroreduction, which coupled the application of renewable electricity, paved a promising way for syngas synthesis. Herein, we demonstrated that Co-based N doped carbon prepared by a simple pyrolysis method provided an ideal platform to generate syngas with tunable ratios of H-2 to CO. During CO2 electroreduction, Co-based N doped carbon exhibited the highest faradaic efficiency (FE) of 56.3% for CO with a total current density of 10.8 mA cm(-2) at -0.9 V versus reversible hydrogen electrode. Structural characterizations showed that the co-existence of Co-0 and Co2+ was responsible for the synthesis of tunable syngas. Notably, we obtained syngas with tunable ratios of H-2 to CO ranging from similar to 1 : 1 to 3 : 1 with the highest current density reaching 47.6 mA cm(-2). This work provides a green way to produce syngas for further applications.

Co-author:

Xiangdong Kong, Cheng Wang, Zhigang Geng

First Author:

Mengke Huang

Correspondence Author:

Jie Zeng, Jun Bao

Document Type:

SCI

Volume:

7

Issue:

1

Page Number:

2-6

Translation or Not:

no

Date of Publication:

2020-11-17

Links to published journals:

https://onlinelibrary.wiley.com/doi/abs/10.1002/cnma.202000529