TY - JOUR
T1 - Novel single ion, comb-branched polymer electrolytes
AU - Cowie, J. M G
AU - Spence, G. H.
PY - 1999/8
Y1 - 1999/8
N2 - A novel, single ion, comb-branch polymer electrolyte has been synthesized. This was prepared by copolymerizing a poly (ethylene oxide methoxy) acrylate (1) with lithium 1,1,2-trifluorobutane sulfonate acrylate (15), to produce comb-branch copolymers (7) whose compositions were adjusted to give [O]/[Li-] values of 12/1, 15/1, 20/1, 14/1, and 28/1. The conductivities were measured as a function of temperature and compared with the corresponding homopolymer of (1), the copolymers of (1) with the non fluorinated sulfonate and the carboxylate analogues of (15). The highest values of s were obtained for sample (7) when compared with the other two copolymer analogues (10) and (11). Glass transition temperatures (Tg) were measured for all samples as a function of the concentration of added salt and copolymers (7) exhibited the lowest Tgs. These new fluorinated, single ion, copolymers give remarkably good conductivity levels demonstrating the effective electron withdrawing properties of the fluorines which provides a facile release of the Li+ ion for conduction.
AB - A novel, single ion, comb-branch polymer electrolyte has been synthesized. This was prepared by copolymerizing a poly (ethylene oxide methoxy) acrylate (1) with lithium 1,1,2-trifluorobutane sulfonate acrylate (15), to produce comb-branch copolymers (7) whose compositions were adjusted to give [O]/[Li-] values of 12/1, 15/1, 20/1, 14/1, and 28/1. The conductivities were measured as a function of temperature and compared with the corresponding homopolymer of (1), the copolymers of (1) with the non fluorinated sulfonate and the carboxylate analogues of (15). The highest values of s were obtained for sample (7) when compared with the other two copolymer analogues (10) and (11). Glass transition temperatures (Tg) were measured for all samples as a function of the concentration of added salt and copolymers (7) exhibited the lowest Tgs. These new fluorinated, single ion, copolymers give remarkably good conductivity levels demonstrating the effective electron withdrawing properties of the fluorines which provides a facile release of the Li+ ion for conduction.
UR - http://www.scopus.com/inward/record.url?scp=0032627484&partnerID=8YFLogxK
U2 - 10.1016/S0167-2738(99)00080-6
DO - 10.1016/S0167-2738(99)00080-6
M3 - Article
SN - 0167-2738
VL - 123
SP - 233
EP - 242
JO - Solid State Ionics
JF - Solid State Ionics
IS - 1
ER -