Multi-scale study of thermal stability of lithiated graphite

作者：Zonghai Chen, Yan Qin, Yang Ren, Wenquan Lu, Christopher J. Orendorff, E.P. Roth, Khalil Amine · 发表于：Energy & Environmental Science · 年份：2011 · DOI：10.1039/c1ee01786a · 被引用次数：174 · 研究领域：Advancements in Battery Materials、Advanced Battery Technologies Research、Advanced Battery Materials and Technologies

Safety remains a major issue for the graphite anode used in lithium-ion batteries. The thermal stability of lithiated graphite was studied by atomic-scale characterization and cell tests. The results revealed that the thermal decomposition of the solid–electrolyte interface is the most easily triggered chemical reaction in lithium-ion cells and plays a critical role in determining the battery safety. It was also shown that natural graphite containing a small amount of 3R graphite had much better thermal stability than mesocarbon microbeads that had no detectable 3R graphite.