Interfacial creation of positively charged sites in LaPO4/Fe3(PO4)2 heterojunctions for high-current-density oxygen evolution

Sitong Liu; Yudi Zhang; Wen Sun; Junqiang Wang; Dengsong Zhang; Juntao Huo; Guowei Li

doi:10.1039/D5CC00018A

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Interfacial creation of positively charged sites in LaPO₄/Fe₃(PO₄)₂ heterojunctions for high-current-density oxygen evolution†

Sitong Liu,^ab Yudi Zhang,^bc Wen Sun,^bc Junqiang Wang,

^bc Dengsong Zhang,

*^a Juntao Huo

*^bc and Guowei Li

*^bc

Author affiliations

* Corresponding authors

^a State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, International Joint Laboratory of Catalytic Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China
E-mail: dszhang@shu.edu.cn

^b CAS Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
E-mail: huojuntao@nimte.ac.cn, liguowei@nimte.ac.cn

^c Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

Abstract

The creation of positively charged active sites is crucial for enhancing the adsorption of negatively charged hydroxide ions, thereby improving the sluggish oxygen evolution reaction (OER). We engineered LaPO₄/Fe₃(PO₄)₂ heterojunctions with a low flat-band potential, facilitating interfacial charge transfer and generation of positively charged holes, resulting in a highly active and stable OER catalyst at 500 mA cm⁻².

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Article information

DOI: https://doi.org/10.1039/D5CC00018A
Article type: Communication
Submitted: 02 Jan 2025
Accepted: 24 Jan 2025
First published: 25 Jan 2025

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Chem. Commun., 2025, Advance Article

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Interfacial creation of positively charged sites in LaPO₄/Fe₃(PO₄)₂ heterojunctions for high-current-density oxygen evolution

S. Liu, Y. Zhang, W. Sun, J. Wang, D. Zhang, J. Huo and G. Li, Chem. Commun., 2025, Advance Article , DOI: 10.1039/D5CC00018A

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