A LiFeP04-type lithium secondary battery cell of 8 Ah capacity with a high energy density and power density was developed for hybrid electric vehicle(HEV)applications by optimizing the key raw materials and process de...A LiFeP04-type lithium secondary battery cell of 8 Ah capacity with a high energy density and power density was developed for hybrid electric vehicle(HEV)applications by optimizing the key raw materials and process design.The 8 Ah class LiFePO_(4)cell with an energy density of 77.2 Wh·kg^(-1)exhibits a power density of 2818 W·kg^(-1)at 50%SOC(state of charge).The battery shows good cyclic capability with the capacity retention of 81.1%after 1,870 cycles at 5 C charge and 10 C discharge rates.It is demonstrated that the cells have an excellent balance of high-power,high-energy,low temperature,and long-life performance for meeting the requirements of HEV.展开更多
基金the State Basic Research Development Program of China(No.2009CB220100)the Ministry of Science and Technology(MOST)of China,US-China Collaboration on Cutting-Edge Technology Development of Electric Vehicles(No.2010DFA72760)+1 种基金the National Natural Science Foundation of China(Nos.50901009 and 51271029)the Fundamental Research Funds for the Central Universities(No.12QNJJ013)。
文摘A LiFeP04-type lithium secondary battery cell of 8 Ah capacity with a high energy density and power density was developed for hybrid electric vehicle(HEV)applications by optimizing the key raw materials and process design.The 8 Ah class LiFePO_(4)cell with an energy density of 77.2 Wh·kg^(-1)exhibits a power density of 2818 W·kg^(-1)at 50%SOC(state of charge).The battery shows good cyclic capability with the capacity retention of 81.1%after 1,870 cycles at 5 C charge and 10 C discharge rates.It is demonstrated that the cells have an excellent balance of high-power,high-energy,low temperature,and long-life performance for meeting the requirements of HEV.
