Improved Elevated Temperature Performance of LiFePO4/Graphite Cell by Blending NMC640 in Cathode

• DOI: 10.1149/1945-7111/ad0bab
• Publication Date: 2023-11-10T22:50:46Z
• Authors: Meng Yue; Connor Aiken; Jay Deshmukh; Matthew D. L. Garayt; Michel Johnson; J. R. Dahn; Chongyin Yang
• Keywords: Deposition

Physical mixtures of LiMn 2 O 4 (LMO) and NMC active cathode materials is a well-known strategy in commercial batteries to achieve better cycling storage performance than cells with pure LMO cathode. In this work, we demonstrated similar synergic effect LiFePO (LFP)/NMC640 material blends. Blending LFP NMC640 the weight ratio 90% 10% lead improvements compared alone. A clear linear coordination between capacity loss iron deposition on graphite anode was observed these blended cells. This work shows that blending promising improve high-temperature stability LFP/graphite for long-term operation.