阳极
电池(电)
电解质
锂(药物)
材料科学
表征(材料科学)
离子
发热
功率密度
锂离子电池
纳米技术
化学
功率(物理)
电极
物理
热力学
医学
有机化学
物理化学
内分泌学
作者
C. Gervillié-Mouravieff,Laura Albero Blanquer,Chris van Alphen,Jiaqiang Huang,Jean‐Marie Tarascon
标识
DOI:10.1016/j.jpowsour.2023.233268
摘要
Lithium-ion batteries, relying on Ni-rich NMC (LiNixMnyCo1−x−yO2) phases, are widely used in various applications due to their high energy density and extended cycle life. However, further improvements are possible with a deeper understanding of their internal chemistry in real-world conditions. Here, using optical fiber Bragg grating sensors placed inside commercial pouch cells, we demonstrate the feasibility of monitoring the heat release during the formation cycles and real-driving cycling. By collecting temperature data for Li-ion cells using different types of NMCs, we were able to extract the contribution of the anode and the impact of additives on overall heat generation. We also present a comparison of the heat generation of NMC-based batteries under varying power and voltage levels, which provides insights into battery safety in dynamic, real-world environments. Our study reveals the importance of continuously monitoring batteries heat release throughout its lifespan to enhance our understanding of the interconnected materials surfaces and electrolyte reactions.
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