NiFe Layered-Double-Hydroxide Nanosheet Arrays on Graphite Felt: A 3D Electrocatalyst for Highly Efficient Water Oxidation in Alkaline Media

Peng Ding; Chuqian Meng; Jie Liang; Tingshuai Li; Yan Wang; Qian Liu; Yonglan Luo; Guanwei Cui; Abdullah M Asiri; Siyu Lu; Xuping Sun

doi:10.1021/acs.inorgchem.1c01783

NiFe Layered-Double-Hydroxide Nanosheet Arrays on Graphite Felt: A 3D Electrocatalyst for Highly Efficient Water Oxidation in Alkaline Media

Inorg Chem. 2021 Sep 6;60(17):12703-12708. doi: 10.1021/acs.inorgchem.1c01783. Epub 2021 Aug 6.

Authors

Peng Ding^{1

2}, Chuqian Meng¹, Jie Liang¹, Tingshuai Li¹, Yan Wang¹, Qian Liu³, Yonglan Luo³, Guanwei Cui⁴, Abdullah M Asiri⁵, Siyu Lu², Xuping Sun¹

Affiliations

¹ Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China.
² Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
³ Institute for Advanced Study, Chengdu University, Chengdu 610106, China.
⁴ College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China.
⁵ Chemistry Department, Faculty of Science & Center of Excellence for Advanced Materials Research, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia.

PMID: 34357774
DOI: 10.1021/acs.inorgchem.1c01783

Abstract

It is of great importance to rationally design and develop earth-abundant nanocatalysts for high-efficiency water electrolysis. Herein, NiFe layered double hydroxide was in situ grown hydrothermally on a 3D graphite felt (NiFe LDH/GF) as a high-efficiency catalyst in facilitating the oxygen evolution reaction (OER). In 1.0 M KOH, NiFe LDH/GF requires a low overpotential of 214 mV to deliver a geometric current density of 50 mA cm^-2 (η_{50 mA cm^-2} = 214 mV), surpassing that NiFe LDH supported on a 2D graphite paper (NiFe LDH/GP; η_{50 mA cm^-2} = 301 mV). More importantly, NiFe LDH/GF shows good durability at 50 mA cm^-2 within 50 h of OER catalysis testing and delivers a faradaic efficiency of nearly 100% in the electrocatalysis of OER.