Optimizing the surface state of cobalt-iron bimetallic phosphide via regulating phosphorus vacancies

Shuang Li; Zhibin Geng; Xiyang Wang; Xiaoru Ren; Jinghai Liu; Xiangyan Hou; Yu Sun; Wei Zhang; Keke Huang; Shouhua Feng

doi:10.1039/C9CC09741D

Optimizing the surface state of cobalt-iron bimetallic phosphide via regulating phosphorus vacancies†

Shuang Li,‡^a Zhibin Geng,‡^a Xiyang Wang,^a Xiaoru Ren,^a Jinghai Liu,

^b Xiangyan Hou,^a Yu Sun,^a Wei Zhang,

^c Keke Huang

*^a and Shouhua Feng

^a

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* Corresponding authors

^a State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC), College of Chemistry, Jilin University, No. 2699, Qianjin Street, Changchun 130012, China
E-mail: kkhuang@jlu.edu.cn

^b Inner Mongolia Key Laboratory of Carbon Nanomaterials, Nano Innovation Institute (NII), College of Chemistry and Chemical Engineering, Inner Mongolia University for Nationalities, Tongliao, China

^c School of Materials Science & Engineering and Electron Microscopy Center, Jilin University, No. 2699, Qianjin Street, Changchun, China

Abstract

Herein, we successfully regulated phosphorus vacancies in Co_0.68Fe_0.32P through Ar-plasma treatment. The Ar-plasma treated Co_0.68Fe_0.32P exhibits a delicate surface state where the surface Co and Fe ions show an unusual electron loss. The unique surface state enhances the oxygen evolving performance of the phosphide.

Chemical Communications

Optimizing the surface state of cobalt-iron bimetallic phosphide via regulating phosphorus vacancies†

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Optimizing the surface state of cobalt-iron bimetallic phosphide via regulating phosphorus vacancies

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