Highly Boosted Oxygen Reduction Reaction Activity by Tuning the Underwater Wetting State of the Superhydrophobic Electrode

Pengwei Wang; Toru Hayashi; Qing'an Meng; Qianbin Wang; Huan Liu; Kazuhito Hashimoto; Lei Jiang

doi:10.1002/smll.201601250

Highly Boosted Oxygen Reduction Reaction Activity by Tuning the Underwater Wetting State of the Superhydrophobic Electrode

Small. 2017 Jan;13(4). doi: 10.1002/smll.201601250. Epub 2016 Aug 11.

Authors

Pengwei Wang¹, Toru Hayashi², Qing'an Meng¹, Qianbin Wang¹, Huan Liu¹, Kazuhito Hashimoto², Lei Jiang¹

Affiliations

¹ Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, Beihang University, No. 37 Xueyuan Road, Haidian district, Beijing, 100191, P. R. China.
² Department of Applied Chemistry, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan.

PMID: 27510500
DOI: 10.1002/smll.201601250

Abstract

By rationally designing superhydrophobic electrodes with different underwater wetting states, it is revealed that only the underwater Wenzel-Cassie coexistent state shows the clearly enhanced ability in catalyzing the oxygen reduction reaction, a typical underwater gas-consuming reaction at electrode. It is proposed that the maximizing and stabilizing the liquid/gas/solid triphase interface, endowed by the underwater Wenzel-Cassie coexistent state, plays a rather crucial role.

Keywords: liquid/gas/solid triphase, ORR; superhydrophobic electrodes; underwater; wetting state.