Navigating surface reconstruction of spinel oxides for electrochemical water oxidation

Yuanmiao Sun, Jiarui Wang, Shibo Xi, Jingjing Shen, Songzhu Luo, Jingjie Ge, Shengnan Sun, Yubo Chen, John V. Hanna, Shuzhou Li, Xin Wang, Zhichuan J. Xu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

25 Citations (Scopus)

Abstract

Understanding and mastering the structural evolution of water oxidation electrocatalysts lays the foundation to finetune their catalytic activity. Herein, we demonstrate that surface reconstruction of spinel oxides originates from the metal-oxygen covalency polarity in the MT–O–MO backbone. A stronger MO–O covalency relative to MT–O covalency is found beneficial for a more thorough reconstruction towards oxyhydroxides. The structure-reconstruction relationship allows precise prediction of the reconstruction ability of spinel pre-catalysts, based on which the reconstruction degree towards the in situ generated oxyhydroxides can be controlled. The investigations of oxyhydroxides generated from spinel pre-catalysts with the same reconstruction ability provide guidelines to navigate the cation selection in spinel pre-catalysts design. This work reveals the fundamentals for manipulating the surface reconstruction of spinel pre-catalysts for water oxidation.

Original languageEnglish
Article number2467
JournalNature Communications
Volume14
Issue number1
DOIs
Publication statusPublished - 28 Apr 2023
Externally publishedYes

ASJC Scopus subject areas

  • General Chemistry
  • General Biochemistry,Genetics and Molecular Biology
  • General Physics and Astronomy

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