151. Recycled silicon powder coated on carbon paper used as the anode of lithium ion batteries
- Author
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Liu Ching-Han, Chiu Kuo-Feng, Leu Hoang-Jyh, Shen Chin-Wei, Ko Tse-Hao, and Liao Ting-Chia
- Subjects
business.product_category ,Materials science ,Silicon ,Carbonization ,Materials Science (miscellaneous) ,chemistry.chemical_element ,General Chemistry ,02 engineering and technology ,engineering.material ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,0104 chemical sciences ,Anode ,Ion ,chemistry ,Chemical engineering ,Coating ,Electrode ,engineering ,General Materials Science ,Lithium ,Carbon paper ,0210 nano-technology ,business - Abstract
High-capacity electrode materials are critical for portable electronic equipment that requires a high-energy density from lithium ion batteries (LIBs). Many different materials and fabrication methods for such electrodes have been developed for this purpose. Carbon paper coated with recycled silicon powder (CP-RSP) was prepared by coating silicon and pitch powder on the carbon paper, followed by stabilization at 250 °C in air and carbonization at 1000 °C in N2. The CP-RSP acted as both the current-collector and the active material for the anodes of LIBs. Electrodes with 2.5, 5, and 10 wt.% silicon exhibited capacity increases of 94, 129 and 41%, respectively, compared with the silicon-free electrode. The electrode for the CP-RSP with 5 wt. % silicon exhibited an optimal balance between discharge capacity and stability in long-cycle tests under various charging rates.
- Published
- 2019