Xm. Wang et al., MICROELECTRODE INVESTIGATION OF THE LITHIUM REDOX BEHAVIOR IN PLASTICIZED POLYMER ELECTROLYTES, Journal of power sources, 68(2), 1997, pp. 487-491
The lithium redox behavior in plasticized polymer electrolytes has bee
n studied by microelectrode technique with the advantage in decreasing
the iR effect of solution resistance. PAN (polyacrylonitrile)-, PVdF
(poly(vinylidene fluoride))- and PVC (poly(vinyl chloride))-based plas
ticized electrolytes showed ionic conductivities ranging from 10(-4) t
o 10(-3) S/cm at ambient temperature. By applying high scan rate (-V/s
), the aggravating effect of the electrolyte decomposition with freshl
y deposited lithium was suppressed, and the reliable kinetic parameter
s of the lithium deposition/dissolution and the diffusion coefficient
of lithium ion were evaluated for PAN-and PVdF-based electrolytes. The
obtained diffusion coefficient for the PAN-based electrolyte was 1.50
X 10(-6) cm(2)/s at 21 degrees C, indicating that the plasticized pol
ymer electrolytes behaved as a pure organic solution of plasticizer. (
C) 1997 Published by Elsevier Science S.A.