| 학회 |
한국공업화학회 |
| 학술대회 |
2021년 봄 (05/12 ~ 05/14, 부산 벡스코(BEXCO)) |
| 권호 |
25권 1호 |
| 발표분야 |
[국제협력] 경상대학교 RIGET 공동 주최 |
| 제목 |
A Robust Approach for Efficient Sodium Storage of GeS2 Hybrid Anode by Electrochemically-driven Amorphization |
| 초록 |
This work is the first report on GeS2 nanocomposites uniformly distributed on reduced graphene oxide (rGO) as a promising anode materials for NIBs are prepared via a facile hydrothermal synthesis and a unique carbo-thermal annealing. The results shows that the GeS2/rGO hybrid anode yields a high reversible specific capacity of 805 mAh g-1 beyond the theoretical capacity, an excellent rate capability of 616 mAh g-1 at 5 A g-1, and a cycle retention of 89.4 % after 100 cycles. A combined ex situ characterization studies reveals that the electrochemically-driven amorphization plays a key role in achieving high performance for accommodating excess sodium ions in the electrode materials. Understanding of the sequential conversion-alloying reaction mechanism for the GeS2/rGO hybrid anode provides a new approach for developing high-performance energy storage application. |
| 저자 |
김주형 |
| 소속 |
경상국립대 |
| 키워드 |
germanium sulfides; sodium-ion battery; amorphization; conversion reaction; alloying reaction
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| E-Mail |
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