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Wood-Derived Freestanding Carbon-Based Electrode with Hierarchical Structure for Industrial-Level Hydrogen Production.

Authors
  • Li, Di1, 2
  • Cheng, Hao1, 2
  • Hao, Xixun3
  • Yu, Guoping4
  • Qiu, Chuntian2
  • Xiao, Yanjun5
  • Huang, Hubiao6
  • Lu, Yingying1, 2
  • Zhang, Bing1, 2
  • 1 State Key Laboratory of Chemical Engineering, Institute of Pharmaceutical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China. , (China)
  • 2 ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 311215, China. , (China)
  • 3 School of Light Industry and Engineering, South China University of Technology, 381 Wushan Road, Guangzhou, 510641, China. , (China)
  • 4 Transfar Group Co., Ltd; Transfar Tower, NO. 945 Minhe Road, Hangzhou, 311217, China. , (China)
  • 5 School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China. , (China)
  • 6 RIKEN Center for Emergent Matter Science, 2-1Hirosawa, Wako, Saitama, 351-0198, Japan. , (Japan)
Type
Published Article
Journal
Advanced Materials
Publisher
Wiley (John Wiley & Sons)
Publication Date
Jan 01, 2024
Volume
36
Issue
4
Identifiers
DOI: 10.1002/adma.202304917
PMID: 37560976
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

The sustainable and scalable fabrication of low-cost, efficient, and durable electrocatalysts that operate well at industrial-level current density is urgently needed for large-scale implementation of the water splitting to produce hydrogen. In this work, an integrated carbon electrode is constructed by encapsulating Ni nanoparticles within N-doped carbonized wood framework (Ni@NCW). Such integrated electrode with hierarchically porous structure facilitates mass transfer process for hydrogen evolution reaction (HER). Ni@NCW electrode can be employed directly as a robust electrocatalyst for HER, which affords the industrial-level current density of 1000 mA cm-2 at low overpotential of 401 mV. The freestanding binder-free electrode exhibits extraordinary stability for 100 h. An anion exchange membrane water electrolysis (AEMWE) electrolyzer assembled with such freestanding carbon electrode requires only a lower cell voltage of 2.43 V to achieve ampere-level current of 4.0 A for hydrogen production without significant performance degradation. These advantages reveal the great potential of this strategy in designing cost-effective freestanding electrode with monometallic, bimetallic, or trimetallic species based on abundant natural wood resources for water splitting. © 2023 Wiley-VCH GmbH.

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