Issue 15, 2024

Manganese, nitrogen co-doped porous carbon with high-loading active sites as the oxygen reduction catalyst for Zn–air batteries

Abstract

Manganese–nitrogen–carbon (Mn–N–C) materials have been considered ideal catalysts for the oxygen reduction reaction (ORR). However, avoiding metal agglomeration during pyrolysis while ensuring the construction of Mn–Nx active centers is still difficult. Furthermore, the influence of pyrolysis temperature on structures of Mn–N–C is controversial, and needs an in-depth understanding. Herein, we prepare single atom Mn–N–C via a spatial confinement method. This is achieved through the pyrolysis of the ZIF precursor, where single Mn(acac)3 molecules are trapped within its cavities. Compared with 800 °C and 1000 °C, 900 °C is the optimal pyrolysis temperature for the synthesis of ZIF-derived Mn–N–C, which promotes the formation of the porous framework and dense Mn–Nx centers (27.47%). As a result, Mn–N–C-900 possesses an outstanding performance with a half-wave potential (E1/2) of 0.882 V in alkaline media. Impressively, the Zn–air battery using Mn–N–C-900 delivers a high peak power density of 84 mW cm−2.

Graphical abstract: Manganese, nitrogen co-doped porous carbon with high-loading active sites as the oxygen reduction catalyst for Zn–air batteries

Supplementary files

Article information

Article type
Paper
Submitted
09 jun 2024
Accepted
20 jun 2024
First published
21 jun 2024

Sustainable Energy Fuels, 2024,8, 3290-3295

Manganese, nitrogen co-doped porous carbon with high-loading active sites as the oxygen reduction catalyst for Zn–air batteries

H. Xu, Y. Gao, R. Li, W. Sun, X. Lu, J. Bai and P. Yang, Sustainable Energy Fuels, 2024, 8, 3290 DOI: 10.1039/D4SE00771A

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