Construction of porous core-shell MnCo2S4 microrugby balls for efficient oxygen evolution reaction

被引：14
作者：
Dai, Zheng [1 ]
Feng, Xueting [1 ]
Li, Qun [1 ]
Su, Pengju [1 ]
Shen, Xueran [1 ]
Zheng, Yang [1 ]
Jiao, Qingze [1 ,2 ]
Zhao, Yun [1 ]
Li, Hansheng [1 ]
Feng, Caihong [1 ]
机构：
[1] Beijing Inst Technol, Sch Chem & Chem Engn, Beijing Key Lab Chem Power Source & Green Catalys, Beijing 100081, Peoples R China
[2] Beijing Inst Technol, Sch Mat & Environm, Jinfeng Rd 6, Xiangzhou Dist 519085, Zhuhai, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2021年 / 872卷
基金：
中国国家自然科学基金;
关键词：
Oxygen evolution reaction; MnCo2S4; Core-shell; Porous; Alkaline electrolyte; BIFUNCTIONAL ELECTROCATALYST; NANOPARTICLES; FABRICATION; NANOSHEETS; REDUCTION; NICO2S4; SURFACE; ANODES; FOAM;
D O I：
10.1016/j.jallcom.2021.159652
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
It is critical to rationally design highly efficient, stable, and cost-effective electrocatalysts for oxygen evolution reaction (OER). Herein, the porous core-shell MnCo2S4 microrugby balls are successfully synthesized via a two-step solvothermal method. Benefiting from the desired porous structure, strong electronic interaction and large specific surface area, it shows a small overpotential of 317 mV at a current density of 10 mA cm(-2), a low Tafel slope of 73.7 mV dec(-1) and robust stability, which is better than that of the corresponding metal oxides and commercial IrO2. The significantly enhanced OER performance of MnCo2S4 microrugby balls can be attributed to their high electrochemical active surface area and electrical conductivity. This work provides a new perspective to design and synthesize core-shell structured electrocatalysts. (C) 2021 Elsevier B.V. All rights reserved.
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页数：8
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