CoMn Layered Double Hydroxides/Carbon Nanotubes Architectures as High‐Performance Electrocatalysts for the Oxygen Evolution Reaction. Issue 6 (6th April 2016)

• Record Type: Journal Article
• Authors: Liu, Zhibin; Yu, Chang; Han, Xiaotong; Yang, Juan; Zhao, Changtai; Huang, Huawei; Qiu, Jieshan
• Is Part Of: ChemElectroChem. Volume 3:Issue 6(2016)
• Page Start: 906
• Page End: 912
• Publication Date: 2016-04-06
• Subjects: carbon nanotubes -- electrocatalysis -- layered double hydroxides -- oxygen evolution reaction -- water oxidation; Electrochemistry -- Periodicals; 541.37
• DOI: 10.1002/celc.201600116
• Languages: English
• ISSNs: 2196-0216

Abstract

Abstract: High‐efficiency, earth‐abundant oxygen evolution reaction (OER) catalysts are highly desired and required for the half reaction of water splitting. Herein, an integrated system composed of CoMn layered double hydroxides (CoMn‐LDH) and carbon nanotubes (CNTs) were configured for the OER. Ultrathin CoMn‐LDH nanoplates can grow and assemble in situ on conducting CNT frameworks to form the CoMn‐LDH/CNT nanoarchitectures. The CNT frameworks provide conducting channels for fast charge transfer, whereas CoMn‐LDH features highly active sites and is capable of catalyzing the OER process. Benefiting from functional integration of the highly active CoMn‐LDH nanoplates and the strong coupling effects between ultrathin nanoplates and conducting CNT frameworks, the as‐made CoMn‐LDH/CNT nanohybrids achieve excellent OER performance with a small overpotential (355 mV at 10 mA cm −2 ), low Tafel slope (45 mV dec −1 ), and prominent electrochemical durability. Abstract : Express delivery : An integrated system composed of high‐quality CoMn layered double hydroxide nanoplates anchored on carbon nanotube frameworks (denoted as CoMn‐LDH/CNT nanohybrids) is reported, towards its electrochemical behavior for the oxygen evolution reaction (OER). The as‐made CoMn‐LDH/CNT nanohybrids deliver an excellent OER activity with a small overpotential (lower than that of CoMn‐LDH nanoplates, precious RuO2 and CNT catalysts) and long‐term stability.