Issue 28, 2018

A porous Zn cathode for Li–CO2 batteries generating fuel-gas CO

Abstract

Global climate change and energy concerns trigger worldwide interest in sustainable, economical CO2 reductive transformation into valuable chemicals. However, traditional electro/thermo-catalysis strategies usually consume a large amount of energy and suffer from low efficiency. Herein, a three-dimensional porous fractal Zn cathode is synthesized by redox-coupled electrodeposition and it exhibits excellent electrocatalytic properties for CO2-to-CO conversion. Inspired by the coupling of a metal battery and CO2 electroreduction, a novel fuel-gas CO generating Li–CO2 battery is firstly realized with the as-prepared porous fractal Zn cathode. Meanwhile, CO formation can be easily tuned within a wide range of discharge currents and reach a maximum faradaic efficiency of up to 67%. Finally, based on gas and solid discharge product analysis, the related mechanism of CO main product production is proposed as 2Li+ + 2CO2 + 2e → CO + Li2CO3. Hence the present work presents a new way for the further development of metal–CO2 batteries to generate useful chemicals and fuels besides electrical energy.

Graphical abstract: A porous Zn cathode for Li–CO2 batteries generating fuel-gas CO

Supplementary files

Article information

Article type
Paper
Submitted
26 Mar 2018
Accepted
25 Jun 2018
First published
26 Jun 2018

J. Mater. Chem. A, 2018,6, 13952-13958

A porous Zn cathode for Li–CO2 batteries generating fuel-gas CO

J. Xie, Q. Liu, Y. Huang, M. Wu and Y. Wang, J. Mater. Chem. A, 2018, 6, 13952 DOI: 10.1039/C8TA02771D

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