Effects of Particle Size, Electronic Connectivity, and Incoherent Nanoscale Domains on the Sequence of Lithiation in LiFePO4 Porous Electrodes
2015 · Advanced Materials
저자
Yiyang Li, Sophie Meyer, 임종우 (Jongwoo Lim), Sang Chul Lee, William E. Gent, Stefano Marchesini, Harinarayan Krishnan, Tolek Tyliszczak, David A. Shapiro, A. L. D. Kilcoyne, William C. Chueh
연구주제
Advancements in Battery Materials · Advanced Battery Technologies Research · Advanced Battery Materials and Technologies
NTIS 과학기술표준분류
에너지/자원만에너지·환경·원자력 확장
전기/전자 > 전지 > 이차전지에너지 외
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AI 연구 키워드·방법
lithiation sequence 리튬인산철(LFP) porous electrode
x ray microscopy
키워드 (OpenAlex)
LiFePO4 lithium-ion batteries porous electrodes particle size effects X-ray microscopy electron microscopy electrode microstructure
초록
High-resolution X-ray microscopy is used to investigate the sequence of lithiation in LiFePO4 porous electrodes. For electrodes with homogeneous interparticle electronic connectivity via the carbon black network, the smaller particles lithiate first. For electrodes with heterogeneous connectivity, the better-connected particles preferentially lithiate. Correlative electron and X-ray microscopy also reveal the presence of incoherent nanodomains that lithiate as if they are separate particles.
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Advancements in Battery Materials