Article Open Access

A High-efficiency Cathode Using Co3O4 and Carbon Paper by Electrodeposition for Rechargeable Lithium-oxygen Batteries

Sustainable Polymer & Energy. 2023, 1(2), 10007; https://doi.org/10.35534/spe.2023.10007
Jing Chen 1,†    Tiedong Liu 1,†    Bin Zhang 1 *    Yu Min 2    Hongqiang Wang 3    Qing-yu Li 3 *   
1
Electronic and Electrical Inspection Division, Shenzhen Academy of Metrology & Quality Inspection, Shenzhen 518060, China
2
Guangdong Research Center for Interfacial Engineering of Functional Materials, Shenzhen University, Shenzhen 518060, China
3
Guangxi Key Laboratory of Low Carbon Energy Materials, School of Chemical and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
These authors contributed to the work equally and should be regarded as co-first authors.
*
Authors to whom correspondence should be addressed.

Received: 08 Dec 2022    Accepted: 23 Apr 2023    Published: 08 May 2023   

Abstract

The conductivity, microstructure, low cost, eco-friendliness, simple and controllable preparation are key points of the preparation and application of cathode materials for lithium-oxygen batteries. Considering the above-mentioned important factors comprehensively, the Co3O4@CP electrode with a three-dimensional structure was prepared by directly growing Co3O4 on the surface of carbon paper (CP) using a simple and controllable electrodeposition method. The obtained Co3O4 depositing layer has a nanosheet microstructure and can provide abundant catalytic active sites for the oxygen evolution and reduction reactions. The network architecture of electronic transmission is constructed by CP in the cathode, promoting the efficiency of the electrode reaction. It’s worth noting that the binder-free and conductive additive-free cathode is beneficial to reduce side reactions. The lithium-oxygen battery assembled with the obtained Co3O4@CP electrode showed satisfactory electrochemical performance. The cell assembled with the obtained Co3O4@CP electrode provided a discharge specific capacity of 10954.7 mA·h·g−1 at a current density of 200 mA·g−1, and the voltage profiles of the cell were good under 100 mA·g−1 at a limited capacity of 500 mA·h g−1 based on the mass of Co3O4. Therefore, the Co3O4@CP composite material is a promising candidate with good application prospects as a cathode material for lithium-oxygen batteries.

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