Defect-Rich 2D Material Networks for Advanced Oxygen Evolution Catalysts

被引：139

作者：

Zhang, Bowei ^{[1
]}

Qi, Zhiyuan ^{[2
,3
]}

Wu, Zishan ^{[4
,5
]}

Lui, Yu Hui ^{[1
]}

Kim, Tae-Hoon ^{[3
]}

Tang, Xiaohui ^{[1
]}

Zhou, Lin ^{[3
]}

Huang, Wenyu ^{[2
,3
]}

Hu, Shan ^{[1
]}

机构：

[1] Iowa State Univ, Dept Mech Engn, Ames, IA 50011 USA

[2] Iowa State Univ, Dept Chem, Ames, IA 50011 USA

[3] US DOE, Ames Natl Lab, Ames, IA 50011 USA

[4] Yale Univ, Dept Chem, New Haven, CT 06511 USA

[5] Yale Univ, Energy Sci Inst, New Haven, CT 06511 USA

来源：

ACS ENERGY LETTERS | 2019年 / 4卷 / 01期

基金：

美国国家科学基金会;

关键词：

LAYERED DOUBLE HYDROXIDE; COBALT-HYDROXIDE; HIGHLY EFFICIENT; NANOSHEET ARRAYS; METAL-OXIDE; ELECTROCATALYSTS; GRAPHENE; HYDROGEN; EXFOLIATION; PERFORMANCE;

D O I：

10.1021/acsenergylett.8b02343

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：

A versatile and straightforward room-temperature strategy is demonstrated to synthesize boundary defect-rich ultrathin transition metal hydroxide nanosheet networks by in situ etching of a cobalt metal organic framework (Co-MOF, ZIF-L-Co). The resultant defect-rich ultrathin Co(OH)(2) (D-U-Co(OH)(2)) nanoarray is one of the most active monometal-based oxygen evolution catalysts to date. Its activity is 3-4 times higher than that of the commercial RuO2 and superior to that of the reported exfoliated bimetallic catalysts. Co-MOF can also be grown on various substrates, and the chemical composition of the defect-rich 2D materials is tunable by changing the metal ions in the etchants. Owing to these merits of the unique synthesis route, our work provides an opportunity for synthesizing advanced nanomaterials that are difficult to get access to by conventional methods.

引用

页码：328 / 336

页数：17

共 56 条

[1] Cobalt-Iron (Oxy)hydroxide Oxygen Evolution Electrocatalysts: The Role of Structure and Composition on Activity, Stability, and Mechanism [J].