Interfacial cation engineering in δ-MnO2 nanosheets for efficient oxygen reduction reaction

Dan Wu; Hao Wan; Zhicheng Zheng; Chengwei Kuang; Ning Zhang; Gen Chen; Xiaohe Liu; Renzhi Ma

doi:10.1039/D5CC01863C

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Interfacial cation engineering in δ-MnO₂ nanosheets for efficient oxygen reduction reaction†

Dan Wu,^a Hao Wan,

^b Zhicheng Zheng,^a Chengwei Kuang,^a Ning Zhang,

^a Gen Chen,

*^a Xiaohe Liu

*^ab and Renzhi Ma

Author affiliations

* Corresponding authors

^a School of Materials Science and Engineering, Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province, Central South University, Changsha 410083, China
E-mail: geenchen@csu.edu.cn, liuxh@csu.edu.cn

^b Zhongyuan Critical Metals Laboratory, Zhengzhou University, Zhengzhou 450001, China

^c International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan

Abstract

The cationic effect on δ-MnO₂ nanosheets for the oxygen reduction reaction (ORR) is investigated by intercalating different interfacial cations (Li, Cs, diallyldimethylammonium (DADMA) and polydimethyl diallyl ammonium (PDDA)). Experimental and theoretical analyses demonstrate that interfacial cations can modulate the catalytic activity by tailoring the electronic structure and spatial water molecule distribution between δ-MnO₂ nanosheets.

This article is part of the themed collection: 2025 Emerging Investigators

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Article information

DOI: https://doi.org/10.1039/D5CC01863C
Article type: Communication
Submitted: 02 Ebr 2025
Accepted: 06 Mai 2025
First published: 06 Mai 2025

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Chem. Commun., 2025, Advance Article

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Interfacial cation engineering in δ-MnO₂ nanosheets for efficient oxygen reduction reaction

D. Wu, H. Wan, Z. Zheng, C. Kuang, N. Zhang, G. Chen, X. Liu and R. Ma, Chem. Commun., 2025, Advance Article , DOI: 10.1039/D5CC01863C

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