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Jang, Ji-Wook
JW Energy Lab.
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Superaerophobic hydrogels for enhanced electrochemical and photoelectrochemical hydrogen production

Author(s)
Jeon, DasomPark, JinwooShin,ChanghwanKim, HyunwooJang, Ji-WookLee, Dong WoogRyu, Jungki
Issued Date
2020-04
DOI
10.1126/sciadv.aaz3944
URI
https://scholarworks.unist.ac.kr/handle/201301/31572
Fulltext
https://advances.sciencemag.org/content/6/15/eaaz3944.abstract
Citation
SCIENCE ADVANCES, v.6, no.15, pp.eaaz3944
Abstract
The efficient removal of gas bubbles in (photo)electrochemical gas evolution reactions is an important but underexplored issue. Conventionally, researchers have attempted to impart bubble-repellent properties (so-called superaerophobicity) to electrodes by controlling their microstructures. However, conventional approaches have limitations, as they are material specific, difficult to scale up, possibly detrimental to the electrodes' catalytic activity and stability, and incompatible with photoelectrochemical applications. To address these issues, we report a simple strategy for the realization of superaerophobic (photo)electrodes via the deposition of hydrogels on a desired electrode surface. For a proof-of-concept demonstration, we deposited a transparent hydrogel assembled from M13 virus onto (photo)electrodes for a hydrogen evolution reaction. The hydrogel overlayer facilitated the elimination of hydrogen bubbles and substantially improved the (photo)electrodes' performances by maintaining high catalytic activity and minimizing the concentration overpotential. This study can contribute to the practical application of various types of (photo)electrochemical gas evolution reactions.
Publisher
AMER ASSOC ADVANCEMENT SCIENCE
ISSN
2375-2548
Keyword
M13ELECTROCATALYSTSPERFORMANCEEFFICIENTMOS2WATER-OXIDATION CATALYSTEVOLUTIONREDUCTION

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