| 학회 | 한국화학공학회 |
| 학술대회 | 2017년 봄 (04/26 ~ 04/28, ICC 제주) |
| 권호 | 23권 1호, p.931 |
| 발표분야 | 재료 |
| 제목 | Synthesis of high capacity LiFePO4/Reduced Graphene Oxide composite cathode material using ball milling |
| 초록 | Nowadays, lithium ion battery is rising for energy storage system in the future. Among the cathode active material lithium iron phosphate is one of the well-known materials for large scale applications because it has low material cost, proper operating voltage and high stability. However, LiFePO4 (LFP) has faced on their poor electronic conductivity and sluggish lithium ion transport. Over last decades, many people have made an effort to solve these problems. The carbon coating on surface is one of the representative methods. It can provide additional electron transport channel to contact the active material. As a result, it enhances the electronic conductivity. Among the coating material, we used the reduced graphene oxide (RGO) synthesized using supercritical ethanol. And we made blended LFP and RGO composite using ball milling with different rotation speed and ratio. After calcination LFP/RGO composite cathode active material delivered high initial charge/discharge capacity and it was 201.5mAh/g and 155.4mAh/g at 0.1 C rate respectively. At high rate 10 C rate, charge/discharge capacity was 97.6mAh/g and 96.5mAh/g. |
| 저자 | 국영수, 김재훈, 황지은 |
| 소속 | 성균관대 |
| 키워드 | 화공소재 전반 |
| 원문파일 | 초록 보기 |
