| 학회 | 한국재료학회 |
| 학술대회 | 2013년 봄 (05/23 ~ 05/24, 여수 엠블호텔(THE MVL)) |
| 권호 | 19권 1호 |
| 발표분야 | 제24회 신소재 심포지엄-리튬이온 이차전지용 나노재료 |
| 제목 | Long-term cycling and capacity fading mechanism of LiFePO4-based lithium secondary batteries for stationary energy storage |
| 초록 | The ever-increasing global energy, fuelled by the depletion of fossil fuels, has driven the search for renewable energy as a potential alternative energy source. Because the energy delivery through energy conversion from renewable sources is unpredictable and intermittent, combination with energy storage systems (ESSs) is required to improve the system efficiency. Li-ion batteries have been regarded as promising candidates for ESSs. Long-term reliability is requisite for the utilization of Li-ion batteries in ESS. In this presentation, long-term cycling and capacity fading mechanism of LiFePO4-based lithium rechargeable batteries are discussed. Pouch type 1.5 Ah full cells were assembled by employing commercial-grade graphite and LiFePO4 as electrode materials. The 1.5 Ah cells were designed to mimic the 50 Ah grade cells employed in commercial ESS systems. After 1000, 2000, and 3000 cycles at a rate of 4C, each full cell was dismantled and the electrodes were analyzed using various electrochemical and physical analysis tools, and the results are presented herein. |
| 저자 | 김재헌1, 우상철2, 김점수2, 김영준2 |
| 소속 | 1국민대, 2전자부품(연) |
| 키워드 | Lithium ion battery; Lithium iron phosphate; Graphite; Long-term cycling; Capacity fading |
