In:
Materials Science Forum, Trans Tech Publications, Ltd., Vol. 1003 ( 2020-7), p. 268-274
Abstract:
Well-crystallized and nanosized LiFePO 4 /C composite have been successfully synthesized by spray-drying under N 2 atmosphere. The morphology, physical and electrochemical properties of the LiFePO 4 /C were tested and analyzed. The charge transfer resistances (Rct) and chemical diffusion coefficients of lithium ions (D Li + ) in LiFePO 4 /C was systematically tested by EIS. The results show that the lithium ions diffusion coefficients obtained from EIS is 1.58×10 -14 cm 2 ·s -1 . The assembled soft-packed cell with LiFePO 4 /C show better rate capability and cycling stability. The average capacity retention of LiFePO 4 /C soft-packed cell decreases to 100%, 98.9%, 96.5%, 92.4%, and 90.3% when current rate increases to 0.3, 0.5, 1, 2, and 3C, respectively. The capacity retention after 80 cycles is retained at more than 99%.
Type of Medium:
Online Resource
ISSN:
1662-9752
DOI:
10.4028/www.scientific.net/MSF.1003
DOI:
10.4028/www.scientific.net/MSF.1003.268
Language:
Unknown
Publisher:
Trans Tech Publications, Ltd.
Publication Date:
2020
detail.hit.zdb_id:
2047372-2
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