TY - JOUR
T1 - Novel gel polymer electrolytes based on a cellulose ester with PEO side chains
AU - Yue, Z.
AU - McEwen, I. J.
AU - Cowie, J. M G
PY - 2003/1
Y1 - 2003/1
N2 - A range of gel electrolytes, composed of a hydroxypropylcellulose ester with poly(oxyethylene) side chains, LiCF3SO3 and propylene carbonate (PC), or a mixture of propylene carbonate with ethylene carbonate (EC), were prepared and studied. The conductivities of gels containing 10 wt.% LiCF3SO3, and having propylene carbonate concentrations varying from 20 to 70 wt.%, exhibit Arrhenius behaviour with activation energies ranging from 16 to 34 kJ mol-1. Room temperature conductivities of the order of 10-3 S cm-1 are achieved with propylene carbonate contents above 50 wt.%. Gels containing 70 wt.% propylene carbonate, or a mixtures of propylene carbonate and ethylene carbonate, were cross-linked to form elastomeric films exhibiting good mechanical properties and room temperature conductivities of ~ 10-3 S cm-1. The conductivities and mechanical strength of these films increased with increasing ethylene carbonate content. An Arrhenius dependence of log conductivity on (1/T) is also observed in these films, with activation energies for ion transport around 16 kJ mol-1. © 2003 Elsevier Science B.V. All rights reserved.
AB - A range of gel electrolytes, composed of a hydroxypropylcellulose ester with poly(oxyethylene) side chains, LiCF3SO3 and propylene carbonate (PC), or a mixture of propylene carbonate with ethylene carbonate (EC), were prepared and studied. The conductivities of gels containing 10 wt.% LiCF3SO3, and having propylene carbonate concentrations varying from 20 to 70 wt.%, exhibit Arrhenius behaviour with activation energies ranging from 16 to 34 kJ mol-1. Room temperature conductivities of the order of 10-3 S cm-1 are achieved with propylene carbonate contents above 50 wt.%. Gels containing 70 wt.% propylene carbonate, or a mixtures of propylene carbonate and ethylene carbonate, were cross-linked to form elastomeric films exhibiting good mechanical properties and room temperature conductivities of ~ 10-3 S cm-1. The conductivities and mechanical strength of these films increased with increasing ethylene carbonate content. An Arrhenius dependence of log conductivity on (1/T) is also observed in these films, with activation energies for ion transport around 16 kJ mol-1. © 2003 Elsevier Science B.V. All rights reserved.
KW - Cellulose derivative
KW - Gel electrolyte
KW - Ion conduction
UR - http://www.scopus.com/inward/record.url?scp=0037211435&partnerID=8YFLogxK
U2 - 10.1016/S0167-2738(02)00595-7
DO - 10.1016/S0167-2738(02)00595-7
M3 - Article
SN - 0167-2738
VL - 156
SP - 155
EP - 162
JO - Solid State Ionics
JF - Solid State Ionics
IS - 1-2
ER -