In situ magnesiothermic reduction synthesis of a Ge@C composite for high-performance lithium-ion batterie anodes.
| Autor: | Tran Huu H; Faculty of Natural Science, Quy Nhon University, 170 An Duong Vuong, Quy Nhon, Binh Dinh, 55000, Vietnam., Nguyen NP; Faculty of Natural Science, Quy Nhon University, 170 An Duong Vuong, Quy Nhon, Binh Dinh, 55000, Vietnam., Ngo VH; Faculty of Natural Science, Quy Nhon University, 170 An Duong Vuong, Quy Nhon, Binh Dinh, 55000, Vietnam., Luc HH; Faculty of Physics, Hanoi National University of Education, 136 Xuan Thuy, Cau Giay, 11300, Hanoi, Vietnam., Le MK; Applied Physical Chemistry Laboratory, University of Science, Viet Nam National University Ho Chi Minh City, 70000, Vietnam., Nguyen MT; Applied Physical Chemistry Laboratory, University of Science, Viet Nam National University Ho Chi Minh City, 70000, Vietnam., Le MLP; Applied Physical Chemistry Laboratory, University of Science, Viet Nam National University Ho Chi Minh City, 70000, Vietnam., Kim HR; Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 120-750, South Korea., Kim IY; Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 120-750, South Korea., Kim SJ; Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 120-750, South Korea., Tran VM; Applied Physical Chemistry Laboratory, University of Science, Viet Nam National University Ho Chi Minh City, 70000, Vietnam., Vo V; Faculty of Natural Science, Quy Nhon University, 170 An Duong Vuong, Quy Nhon, Binh Dinh, 55000, Vietnam. |
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| Jazyk: | angličtina |
| Zdroj: | Beilstein journal of nanotechnology [Beilstein J Nanotechnol] 2023 Jun 26; Vol. 14, pp. 751-761. Date of Electronic Publication: 2023 Jun 26 (Print Publication: 2023). |
| DOI: | 10.3762/bjnano.14.62 |
| Abstrakt: | Metallothermic, especially magnesiothermic, solid-state reactions have been widely applied to synthesize various materials. However, further investigations regarding the use of this method for composite syntheses are needed because of the high reactivity of magnesium. Herein, we report an in situ magnesiothermic reduction to synthesize a composite of Ge@C as an anode material for lithium-ion batteries. The obtained electrode delivered a specific capacity of 454.2 mAh·g -1 after 200 cycles at a specific current of 1000 mA·g -1 . The stable electrochemical performance and good rate performance of the electrode (432.3 mAh·g -1 at a specific current of 5000 mA·g -1 ) are attributed to the enhancement in distribution and chemical contact between Ge nanoparticles and the biomass-based carbon matrix. A comparison with other synthesis routes has been conducted to demonstrate the effectiveness of contact formation during in situ synthesis. (Copyright © 2023, Tran Huu et al.) |
| Databáze: | MEDLINE |
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