Ju. Kim et al., Electrochemical characteristics of LiMn2O4-polypyrrole composite cathode for lithium polymer batteries, J POWER SOU, 97-8, 2001, pp. 450-453
Citations number
13
Categorie Soggetti
Physical Chemistry/Chemical Physics","Environmental Engineering & Energy
A LiMn2O4-PPy composite cathode for lithium polymer battery was developed.
We investigated temperature dependence of ionic conductivity of PVDF-PC-EC-
LiClO4 and PVDF-EC-DEC-LiClO4 electrolytes, AC impedance response and charg
e/discharge characteristics of LiMn2O4-PPy/MCMB in PVDF-based electrolyte.
The ionic conductivity of PVDF-PC10EC10LiClO4 and PVDF-EC10DEC10LiClO4 with
25 wt.% PVDF electrolyte was 2.3 and 1.8 x 10(-3) S/cm at room temperature
. The first discharge capacity of LiMn2O4 added 15 wt.% SP270 was 123 mAh/g
, while that of LiMnO2-PPy composite with 7 wt.% PPy and 10 wt.% SP270 was
135 mAh/ g. The charge/discharge efficiency was above 98% after the 2nd cyc
le. The LiMn2O4-PPy composite cathode with 7 wt.% PPy-10 wt.% SP270 in PVDF
-EC-DEC-LiClO4 electrolyte showed good capacity with cycling. (C) 2001 Else
vier Science B.V. All rights reserved.