Issue 23, 2021

Anionic redox reaction triggered by trivalent Al3+ in P3-Na0.65Mn0.5Al0.5O2

Abstract

P3-Na0.65Mn0.5Al0.5O2 (NMAO) has been synthesized and studied as a cathode for sodium batteries, and shows anionic redox reaction (ARR) and exhibits a first charging capacity of ∼110 mA h g−1. The electrochemical mechanism of NMAO was comprehensively investigated by X-ray absorption spectroscopy (XAS), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and density functional theory (DFT) calculations. The reversible oxygen redox behaviour is triggered by Al3+ through oxygen quasi non-bonding states generated by the relatively ionic interaction of Al and O. Furthermore, the presence of Al3+ can suppress oxygen loss in ARR. This work provides new insights into the design and mechanism of anionic redox active cathode materials.

Graphical abstract: Anionic redox reaction triggered by trivalent Al3+ in P3-Na0.65Mn0.5Al0.5O2

Supplementary files

Article information

Article type
Communication
Submitted
22 Jan 2021
Accepted
16 Feb 2021
First published
17 Feb 2021

Chem. Commun., 2021,57, 2867-2870

Anionic redox reaction triggered by trivalent Al3+ in P3-Na0.65Mn0.5Al0.5O2

D. Shi, T. Wang, Z. Shadike, L. Ma, X. Yang, S. Chu, Z. Zhao, Z. Peng and Z. Fu, Chem. Commun., 2021, 57, 2867 DOI: 10.1039/D1CC00373A

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