Cited by 154Electrocatalysts for Energy ConversionSurface Modification and SuperhydrophobicityMinerals Flotation and Separation Techniques

A Multi‐Bioinspired Dual‐Gradient Electrode for Microbubble Manipulation toward Controllable Water Splitting

Long, Zhiyun, Zhao, Yuyan, Zhang, Chunhui, Zhang, Yuheng, Yu, Cunming, Wu, Yuchen, Ma, Jun, Cao, Moyuan +1 more·2020·Advanced Materials

Abstract

Clean energy generated from total water splitting is expected to be an affordable, sustainable, and reliable resource but it remains a challenge to gain pure fuel with a controllable pathway. Here, a simple and economical strategy that enables in situ separation of H 2 /O 2 product by manipulating the generated gas phases with the aid of multi‐bioinspired electrodes is proposed. This versatile electrode is based on a Janus asymmetric foam with dual gradients, i.e., the wettability gradient promotes the one‐way gas penetration and the geometry gradient boosts the spontaneous on‐surface transport in the horizontal direction, which cooperatively facilitates self‐driven 3D bubble transport in an aqueous environment. Benefitting from the 3D bionic electrode, the limited distance between the cathode and the anode can be reduced to 1 mm, and the corresponding current density is enhanced 1.5 times as compared with the common condition. This Janus triangular electrode with dual directionality elucidates 3D smart bubble manipulation during overall water splitting and should offer a great opportunity to develop advanced electrochemical processes toward complicated environments such as confined space and zero gravity.

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Crossref · 10.1002/adma.201908099

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Authors
Long, Z., Zhao, Y., Zhang, C., Zhang, Y., Yu, C., Wu, Y., Ma, J., Cao, M., & Jiang, L.
Affiliations
  • Harbin Institute of Technology (CN)
  • Chinese Academy of Sciences (CN)
  • Tianjin University (CN)
Corresponding author
  • Ma, Jun
  • Cao, Moyuan
Venue
Advanced Materials
Publisher
Wiley
Published
2020-03-04
Volume
32
Issue
17
Pages
e1908099-e1908099
ISSN
  • 0935-9648 (ISSN-L)
  • 1521-4095
OpenAlex
W3009417872
Cited by
154
References
46
Citations by year
2026: 17 · 2025: 27 · 2024: 36 · 2023: 21 · 2022: 26 · 2021: 23 · 2020: 4
FWCI
3.66
Type
journal article
Language
en
Open access
closed
Locations
  • Advanced Materials (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Natural Science Foundation of China (21805204)
  • Natural Science Foundation of Tianjin City (19JCQNJC05100)
  • State Key Laboratory of Urban Water Resource and Environment
  • Harbin Institute of Technology (2019DX05)
  • Ministry of Science and Technology of the People's Republic of China (2018YFA0208502)
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
  • Physical Sciences › Materials Science › Surfaces, Coatings and Films › Surface Modification and Superhydrophobicity
  • Physical Sciences › Environmental Science › Water Science and Technology › Minerals Flotation and Separation Techniques
Keywords
water splitting, hydrogen production, oxygen evolution reaction, wettability gradient, gas penetration, current density enhancement, zero gravity

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