In situ magnesiothermic reduction synthesis of a Ge@C composite for high-performance lithium-ion batterie anodes
- 주제(키워드) Ge anode , in situ synthesis , lithium-ion batteries , magnesiothermic reduction
- 주제(기타) Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied
- 설명문(일반) [Huu, Ha Tran; Nguyen, Ngoc Phi; Ngo, Vuong Hoang; Vo, Vien] Quy Nhon Univ, Fac Nat Sci, 170 An Duong Vuong, Quy Nhon 55000, Binh Dinh, Vietnam; [Luc, Huy Hoang] Hanoi Natl Univ Educ, Fac Phys, 136 Xuan Thuy, Hanoi 11300, Vietnam; [Le, Minh Kha; Nguyen, Minh Thu; Le, My Loan Phung; Tran, Van Man] Viet Nam Natl Univ Ho Chi Minh City, Univ Sci, Appl Phys Chem Lab, Ho Chi Minh City 70000, Vietnam; [Kim, Hye Rim; Kim, In Young; Kim, Sung Jin] Ewha Womans Univ, Dept Chem & Nanosci, Seoul 120750, South Korea
- 등재 SCIE, SCOPUS
- OA유형 gold
- 발행기관 BEILSTEIN-INSTITUT
- 발행년도 2023
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000208604
- 본문언어 영어
- Published As https://doi.org/10.3762/bjnano.14.62
- PubMed 37405152
초록/요약
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 & BULL;g-1 after 200 cycles at a specific current of 1000 mA & BULL;g-1. The stable electrochemical performance and good rate performance of the electrode (432.3 mAh & BULL;g-1 at a specific current of 5000 mA & BULL;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.
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