Facile synthesis of ZnCo-ZIFs-derived ZnxCo3-xO4 hollow polyhedron for efficient oxygen evolution reduction

被引：34
|
作者：
Wang, Lei [1 ]
Meng, Tianjiao [1 ]
Chen, Chunxia [1 ]
Fan, Yanwei [1 ]
Zhang, Qianqian [1 ]
Wang, Huan [1 ]
Zhang, Yufan [1 ]
机构：
[1] Hebei Univ, Key Lab Analyt Sci & Technol Hebei Prov, Coll Chem & Environm Sci, Key Lab Med Chem & Mol Diag,Minist Educ, Baoding 071002, Peoples R China
来源：
JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2018年 / 532卷
基金：
中国国家自然科学基金;
关键词：
ZnxCO3-xO4; Binary metal oxide; Zeolitic imidazolate frameworks; Oxygen evolution reaction; METAL-ORGANIC FRAMEWORKS; WATER OXIDATION; BIFUNCTIONAL ELECTROCATALYST; ELECTROCHEMICAL APPLICATIONS; ENERGY-CONVERSION; CARBON; OXIDE; CATALYSIS; DESIGN; SELECTIVITY;
D O I：
10.1016/j.jcis.2018.08.038
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：
The construction of highly active and stable non-noble metal electrocatalysts for oxygen evolution reaction (OER) is a crucial requirement for green energy utilization. Herein, we report a novel hybrid nanostructure of Zn/Co bimetallic oxide (ZnxCo3-xO4) hollow polyhedron through a pyrolysis-oxidation strategy derived from bimetallic Zn, Co-zeolitic imidazolate frameworks (ZnCo-ZIFs) rhombic polyhedral. Benefiting from the synergistic effects between highly active metal oxide and the unique polyhedron structure, the ZnxCo3-xO4 hollow polyhedron hybrid displayed outstanding electrocatalytic performances in alkaline media. When the ZnxCo3-xO4 polyhedron was employed as electrocatalysts for OER, a potential as low as 1.66 V (vs. RHE) was required to deliver the current density of 10 mA cm(-2) in 1 M KOH, and ZnxCo3-xO4 still presented superior activity after continuously working for cyclic voltammetric scanning of 1000 cycles. (C) 2018 Elsevier Inc. All rights reserved.
引用
收藏
页码：650 / 656
页数：7
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