An Fe(TCNQ)2 nanowire array on Fe foil: an efficient non-noble-metal catalyst for the oxygen evolution reaction in alkaline mediaElectronic supplementary information (ESI) available: Experimental section and supplementary figures. See DOI: 10.1039/c7cc09105b

• Main Authors: Xie, Maowen, Xiong, Xiaoli, Yang, Lin, Shi, Xifeng, Asiri, Abdullah M, Sun, Xuping
• Format: Journal Article
• Language: English
• Published: 27.02.2018
• ISSN: 1359-7345; 1364-548X
• DOI: 10.1039/c7cc09105b

It is highly desirable to develop efficient and durable oxygen evolution reaction (OER) electrocatalysts. Herein, we report the in situ development of an Fe-(tetracyanoquinodimethane) 2 nanowire array on Fe foil (Fe(TCNQ) 2 /Fe) via a solution immersion method. As a non-noble-metal OER electrocatalyst, such Fe(TCNQ) 2 /Fe needs an overpotential of only 340 mV to drive a geometrical catalytic current density of 10 mA cm −2 in 1.0 M KOH. Notably, it also shows strong long-term electrochemical durability capable of maintaining its catalytic activity for at least 110 h. An Fe-(tetracyanoquinodimethane) 2 nanowire array in situ developed on Fe foil (Fe(TCNQ) 2 /Fe) acts as an efficient and durable electrocatalyst for water oxidation, needing an overpotential of 340 mV to attain a current density of 10 mA cm −2 in 1.0 M KOH.