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《Chemical World》 2008-10
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Study on the Charge and Discharge Performance of Lithium Ion Batteries at Low Temperature

XIE Xiao-hua~1, XIE Jing-ying~2, XIA Bao-jia~1(1. Shanghai Institute of Microsystem and Information Technology, CAS, Shanghai 200050, China; 2. Shanghai Institute of Space Power Sources, Shanghai 200233, China)  
The charge and discharge characteristics of lithium ion batteries at different temperature (room temperature~-30 ℃) were investigated.Results showed that lithium ion batteries had poor charge and discharge performance at low temperature.with temperature down to -30 ℃,the discharge capacity dropped to 87% of the capacity obtained at room temperature,the average discharge voltage reduced 0.598 V,the charge capacity during constant current process was only 14% of the total charge capacity and the constant voltage charge time extended.The main limitation of the low temperature performance for lithium ion batteries was also studied by electrochemistry impedance spectroscopy.
【CateGory Index】: TM912
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