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동의어 포함
High energy density lithium-ion batteries(LIBs) are essential for large-scale application such as electric vehicles(EVs) and energy storage systems(ESSs). In this work, we fabricated high-loading electrodes(12∼13 mg cm-2) based on the high-nickel cathode LiNi0.92Co0.07Mn0.01O2(NCM9271) to meet the growing energy demands of such systems. However, the thick electrodes with high mass loading often suffer from sluggish lithium-ion and electronic transport. Under high-rate conditions, the longer ion transport pathways induce a concentration polarization within the electrode and an increase the internal resistance. To overcome these limitations, a small amount(1-2 wt%) of multi-walled carbon nanotubes(MWCNTs) was incorporated to the electrode as a conductive additive. The well-dispersed MWCNTs network significantly improved the internal electronic conductivity and reduced resistance. As a result, the NCM9271 + 2 wt% MWCNTs electrode exhibited a capacity retention of 87.2% after 60 cycles at 0.1 C, which was more than eight times higher than that of the pristine electrode.
Furthermore, the electrode containing 2 wt% MWCNTs demonstrated rapid capacity recovery from 1 C to 0.1 C. These findings highlight a simple and effective electrode engineering strategy to enable superior performance of LIBs under extreme loading conditions, providing valuable insights for the design of next-generation batteries.*표시는 필수 입력사항입니다.
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도서위치안내: 정기간행물실(524호) / 서가번호: 국내12
2021년 이전 정기간행물은 온라인 신청(원문 구축 자료는 원문 이용)
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