Issue 8, 2023

Electroreduction of CO2 to syngas with controllable H2/CO ratios in a wide potential range over Ni–N co-doped ultrathin carbon nanosheets

Abstract

The conversion of CO2 to syngas (H2 and CO) via electrochemical reduction has been considered a promising strategy to mitigate the greenhouse effect. However, it is a great challenge to control H2/CO ratios over a wide voltage window. Herein, a new method of fabricating Ni–N co-doped carbon nanosheets by molten salt-assisted pyrolysis, impregnation and re-carbonization is proposed. Benefiting from their ultrathin structure and tunable Ni–Nx active site content, the H2/CO ratios can be adjusted from 1/2 to 2/1 within a wide applied voltage range (−0.7 to −1.3 V vs. RHE). After electrochemical stability testing for 10 h, the current density and H2/CO ratios remained almost constant, revealing robust long-term stability. This work may benefit the construction of efficient and low-budget electrocatalysts for the production of tunable syngas.

Graphical abstract: Electroreduction of CO2 to syngas with controllable H2/CO ratios in a wide potential range over Ni–N co-doped ultrathin carbon nanosheets

Supplementary files

Article information

Article type
Research Article
Submitted
15 yan 2023
Accepted
09 mar 2023
First published
10 mar 2023

Inorg. Chem. Front., 2023,10, 2414-2422

Electroreduction of CO2 to syngas with controllable H2/CO ratios in a wide potential range over Ni–N co-doped ultrathin carbon nanosheets

K. Gan, H. Li, R. Li, J. Niu, J. He, D. Jia and X. He, Inorg. Chem. Front., 2023, 10, 2414 DOI: 10.1039/D3QI00108C

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements