Issue 21, 2024

A high-entropy cathode catalyst with multiphase catalytic capability of Li2O2 and Li2CO3 enabling ultralong cycle life in Li–air batteries

Abstract

For Li–air batteries (LABs), the performance enhancement is significantly restricted by the lack of highly efficient cathode catalysts. It is difficult to achieve multiphase catalysis to facilitate the complicated discharge products, such as Li2O2 and Li2CO3, in ambient air. Herein, a broad d-band strategy is proposed as the design guidance to fabricate the cathode catalyst with multiphase catalytic capability for LABs. It is demonstrated that the HESe (FeCoNiMnZn)Se2 exhibits a modulated broad d-band distribution for highly efficient catalyst–adsorbate interaction. Furthermore, the broad d-band distribution leads to the orbital overlaps of metal 3d and O 2p of O2, CO2, LiO2, Li2O2 and Li2CO3, which can facilitate the electron injection during the discharge process and reduce the energy barrier for charge transfer and the desorption of gas species (O2 and CO2) during the charge process. As a result, the HESe cathode delivers an ultralong cycle life over 480 cycles in ambient air without any protection in LABs, and 1050 cycles in Li–CO2 batteries, demonstrating the highly efficient multiphase catalytic capability for Li2O2 and Li2CO3.

Graphical abstract: A high-entropy cathode catalyst with multiphase catalytic capability of Li2O2 and Li2CO3 enabling ultralong cycle life in Li–air batteries

Supplementary files

Article information

Article type
Paper
Submitted
27 Jun 2024
Accepted
18 Sep 2024
First published
01 Oct 2024

Energy Environ. Sci., 2024,17, 8198-8208

A high-entropy cathode catalyst with multiphase catalytic capability of Li2O2 and Li2CO3 enabling ultralong cycle life in Li–air batteries

X. Li, G. Zhang, D. Zhang, R. Yang, H. Yu, X. Zhang, G. Lian, H. Hou, Z. Guo, C. Hou, X. Yang and F. Dang, Energy Environ. Sci., 2024, 17, 8198 DOI: 10.1039/D4EE02817A

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