Issue 37, 2023

Boosting the rate performance of primary Li/CFx batteries through interlayer conductive network engineering

Abstract

As an attractive cathode material with an ultra-high theoretical capacity and energy density, graphite fluoride (CFx) is a promising option for lithium primary batteries. However, its application in high-power-demanding scenarios is limited by its poor rate performance, mainly due to its intrinsic low electrical conductivity and sluggish electrochemical kinetics. Herein, we demonstrate an innovative method that could improve the electron-transport properties and electrochemical kinetics of CFx simultaneously. This was achieved by exfoliating CFx into quasi-2D flakes and constructing conductive networks within the interlayers. The strong electronic interaction between CFx and the conductive network enabled facile charge transfer, as reflected by photoluminescence quenching and electrochemical characterization tests. This newly designed CFx cathode outperformed conventional ones in a lithium primary battery, delivering a specific capacity of 580 mA h g−1 at a high discharge rate of 2C, which was 77% of the charge capacity at 0.1C.

Graphical abstract: Boosting the rate performance of primary Li/CFx batteries through interlayer conductive network engineering

Supplementary files

Article information

Article type
Paper
Submitted
12 Jul 2023
Accepted
25 Aug 2023
First published
30 Aug 2023

J. Mater. Chem. A, 2023,11, 20187-20192

Boosting the rate performance of primary Li/CFx batteries through interlayer conductive network engineering

F. Zhang, Y. Lan, R. Li, J. Wang, S. Wu, L. Cai, Y. Zhao and W. Wang, J. Mater. Chem. A, 2023, 11, 20187 DOI: 10.1039/D3TA04102F

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