期刊
NANOMATERIALS
卷 11, 期 7, 页码 -出版社
MDPI
DOI: 10.3390/nano11071830
关键词
hydrogen storage; microporosity; surface modification; carbon fiber
类别
资金
- DGIST R&D Program of Ministry of Science and ICT of the Republic of Korea [21-ET-08]
- National Research Foundation of Korea [21-ET-08] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
In this study, highly porous carbon fiber with improved surface area and micropore volume was prepared for hydrogen storage. The activated porous carbon fiber (APCF) showed a high hydrogen storage capacity of 5.14 wt% at 77 K and 10 MPa, which was further enhanced to 5.45 wt% by depositing catalytic Pd nanoparticles. The study demonstrates the potential of Pd-deposited APCF for efficient hydrogen storage.
In this study, highly porous carbon fiber was prepared for hydrogen storage. Porous carbon fiber (PCF) and activated porous carbon fiber (APCF) were derived by carbonization and chemical activation after selectively removing polyvinyl alcohol from a bi-component fiber composed of polyvinyl alcohol and polyacrylonitrile (PAN). The chemical activation created more pores on the surface of the PCF, and consequently, highly porous APCF was obtained with an improved BET surface area (3058 m(2) g(-1)) and micropore volume (1.18 cm(3) g(-1)) compare to those of the carbon fiber, which was prepared by calcination of monocomponent PAN. APCF was revealed to be very efficient for hydrogen storage, its hydrogen capacity of 5.14 wt% at 77 K and 10 MPa. Such hydrogen storage capacity is much higher than that of activated carbon fibers reported previously. To further enhance hydrogen storage capacity, catalytic Pd nanoparticles were deposited on the surface of the APCF. The Pd-deposited APCF exhibits a high hydrogen storage capacity of 5.45 wt% at 77 K and 10 MPa. The results demonstrate the potential of Pd-deposited APCF for efficient hydrogen storage.
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