| 학회 |
한국공업화학회 |
| 학술대회 |
2017년 봄 (05/10 ~ 05/12, 광주 김대중컨벤센센터(Kimdaejung Convention Center)) |
| 권호 |
21권 1호 |
| 발표분야 |
전기화학 |
| 제목 |
Highly stacked flexible graphene paper for sodium-ion battery |
| 초록 |
In this work, we report highly stacked graphene papers (HSGPs) as a useful anode material for sodium-ion batteries. HSGPs were prepared by the vaccum filtration of reduced graphene oxides through a hydrazine-treatment and following heat treatment by 800℃ with a pressure of 10 kPa. An anisotropic microstructure composed of stacked graphene layers of HSGPs allows the intercalation of solvated sodium-ions by co-intercalation mechanism and leads to high rate capability, stable cycle performance. In addition, HSGP-based electrode is composed of monolith graphene layers without metal substrate, conducting carbon, and binber, reaulting in flexilbity and much higher the tap density compared with conventional graphite-based electrodes. Consequently, HSGP-based electrode exhibits exellent electrochemical performances with an initial reversible capacity of 163 mAhg-1, a high Coulombic efficiency of 83%, high rate capabilities of 4 Ag-1, and stable cycle performance for 1000 cycles are achieved. |
| 저자 |
최준호1, 이민의1, 김나래1, 윤현지1, 안홍주1, 김익중1, 윤영수2, 진형준1
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| 소속 |
1인하대, 2강원대 |
| 키워드 |
anode materials; flexible electrodes; graphene; reduced graphene oxide; sodium-ion battery
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| E-Mail |
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