上海交大---磷酸铁锂电池的高低温解决途径.ppt

Approaches to improve the electrochemical performance of LiFePO4-based lithium ion batteries working in a wide temperature range;Introduction ;现有生产能力：年产150吨磷酸铁锂正极材料 近期目标：合资建立磷酸铁锂动力电池生产线;Introduction;Introduction;Cathode: particle size minimization or doping;1.0m(0.9LiBF4–0.1LiBOB) 1:1:3 PC/EC/EMC electrolyte;We studied the low temperature performance of LiFePO4/C cathode in a quaternary carbonate-based electrolyte. The discharge capacities of the LiFePO4/C cathode were about 134.5 mAh/g (20℃), 114 mAh/g (0℃), 90 mAh/g (-20℃) and 69 mAh/g (-40℃) using a 1C charge-discharge rate. ;;LiFePO4/C高温性能研究;Electrolyte Design;1.0m(0.9LiBF4–0.1LiBOB) 1:1:3 PC/EC/EMC electrolyte;Anode coating;LiFe(PO4)1-xFx/C cathode;LiFePO4/C cathode modification;F 取代对LiFePO4结构的影响;Rate capabilities of LiFePO4/C and PPy-LiFePO4/C electrodes (active material : carbon black: PVDF=75:15:10);Discharge curves of LiFePO4/C and PPy-LiFePO4/C composite cathode materials at 5C working in 55oC;;Summary;973 Program of China (2007CB209705) Natural Science Foundation of China Natural Science Foundation of Shanghai (07JC14024). ;8th International Symposium on New Materials and Nano-Materials for Electrochemical Systems