| Autor: |
Hye Jin Kim, Jin Hyeok Choi, Jang Wook Choi |
| Jazyk: |
angličtina |
| Rok vydání: |
2017 |
| Předmět: |
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| Zdroj: |
Nano Convergence, Vol 4, Iss 1, Pp 1-6 (2017) |
| Druh dokumentu: |
article |
| ISSN: |
2196-5404 |
| DOI: |
10.1186/s40580-017-0118-x |
| Popis: |
Abstract Rice husk is produced in a massive amount worldwide as a byproduct of rice cultivation. Rice husk contains approximately 20 wt% of mesoporous SiO2. We produce mesoporous silicon (Si) by reducing the rice husk-originating SiO2 using a magnesio-milling process. Taking advantage of meso-porosity and large available quantity, we apply rice husk-originating Si to lithium ion battery anodes in a composite form with commercial graphite. By varying the mass ratio between these two components, trade-off relation between specific capacity and cycle life was observed. A controllable pre-lithiation scheme was adopted to increase the initial Coulombic efficiency and energy density. The series of electrochemical results suggest that rice husk-originating Si–graphite composites are promising candidates for high capacity lithium ion battery anodes, with the prominent advantages in battery performance and scalability. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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