Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 47, Issue 89, Pages 37870-37881Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2022.08.295
Keywords
Hollow structure; Co9S8; MWCNTs; Hydrogen storage; Electrochemistry
Categories
Funding
- National Key R & D Program of China
- Jilin Province Science and Technology Development Project
- capital construction fund project of Jilin Development and Reform Commis- sion [2021C037-3]
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Hollow porous Co9S8 nanocages were synthesized using zeolitic imidazolate framework of ZIF-67 as the precursor, while solid Co9S8 particles were prepared by hydrothermal method. H-Co9S8 + MWCNTs and S-Co9S8 + MWCNTs composites were fabricated to improve the conductivity and activity of Co9S8 materials. The electrochemical hydrogen storage properties of H-Co9S8 and its composite with MWCNTs were tested for the first time.
By using zeolitic imidazolate framework of ZIF-67 as the precursor, the hollow porous Co9S8 (H-Co9S8) nanocages are synthesized via the sulfidation reaction and thermal treatment processes. The ordinary solid Co9S8 (S-Co9S8) particles are prepared by hydrothermal method. To improve the conductivity and activity of the Co9S8 materials, H-Co9S8 + MWCNTs and S-Co9S8 + MWCNTs composites are fabricated by ball milling. The electrochemical hydrogen storage properties of H-Co9S8 and H-Co9S8 + MWCNTs electrodes are tested via a three-electrode system for the first time. Ultimately, the H-Co9S8
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