Fe(TCNQ)2 Nanorod Array: A Conductive Non-Noble-Metal Electrocatalyst toward Water Oxidation in Alkaline Media

It is extremely desired to develop cost-effective and high-efficient water oxidation electrocatalysts in alkaline electrolytes. In this Letter, we report the topotactic conversion of Cu­(tetracyanoquinodimethane) nanoarray, denoted as Cu­(TCNQ), into Fe­(TCNQ)2 nanoarray via low-temperature cationic...

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Bibliographic Details
Published in:ACS sustainable chemistry & engineering 2018-02, Vol.6 (2), p.1545-1549
Main Authors: Guo, Xiaoxi, Zhu, Shuyun, Kong, Rong-Mei, Zhang, Xiaoping, Qu, Fengli
Format: Article
Language:English
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Summary:It is extremely desired to develop cost-effective and high-efficient water oxidation electrocatalysts in alkaline electrolytes. In this Letter, we report the topotactic conversion of Cu­(tetracyanoquinodimethane) nanoarray, denoted as Cu­(TCNQ), into Fe­(TCNQ)2 nanoarray via low-temperature cationic exchange. As a 3D electrode, such Fe­(TCNQ)2 possesses superior oxygen evolution reaction (OER) performance needing overpotentials as low as 321 and 353 mV to afford 20 and 50 mA cm–2 in 1.0 M KOH, respectively. Remarkably enough, such a catalyst shows good durability in the long term electrochemical process with its catalytic activity being retained for 25 h at lowest. This work demonstrates that Fe­(TCNQ)2 nanoarray may open up new possibilities for OER application.
ISSN:2168-0485
2168-0485
DOI:10.1021/acssuschemeng.7b03962