Preparation and electrochemical hydrogen storage application of mesoporous carbon CMK-3 coated Co2B alloy composite
| Autor: | Xiaowei Niu, Kunyu Guan, Qingbin Wei, Xiaoyi Wang, Heng Liu |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Hydrogen Alloy Doping General Physics and Astronomy chemistry.chemical_element 02 engineering and technology engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology Molecular sieve Electrochemistry 01 natural sciences 0104 chemical sciences Corrosion Hydrogen storage Chemical engineering chemistry engineering Physical and Theoretical Chemistry 0210 nano-technology Mesoporous material |
| Zdroj: | Chemical Physics Letters. 778:138762 |
| ISSN: | 0009-2614 |
| DOI: | 10.1016/j.cplett.2021.138762 |
| Popis: | Mesoporous carbon CMK-3 is synthesized using mesoporous molecular sieve SBA-15 as the template. Co2B alloy is prepared by the high temperature solid phase method. Composites of Co2B mixed with 2%, 5%, 7% and 10% of CMK-3 are fabricated via ball-milling to improve the electrochemical performance of Co2B alloy. Ultimately, the discharge capacity reaches a maximum (662.8 mAh/g) for 5% doping amount of CMK-3. The CMK-3/Co2B composite materials exhibit preferable HRD and improved corrosion and oxidation resistance. CMK-3/Co2B displays excellent electrochemical and kinetics properties owing to the unique electrocatalytic activity and structural feature of CMK-3, which can accelerate the hydrogen transmission. |
| Databáze: | OpenAIRE |
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