TY - JOUR
T1 - Monte Carlo study of diffusion in polymer electrolytes
AU - Pendzig, P.
AU - Dieterich, W.
AU - Nitzan, A.
PY - 1998/8/2
Y1 - 1998/8/2
N2 - Polymer chain and ion dynamics properties are investigated in a lattice model of polymer electrolytes, which emphasizes the difference in cation-polymer and anion-polymer interactions. The assumption of specific binding sites for cations on the chain molecules leads to a reduction of chain mobilities, which in turn suppresses diffusion of ions. We find a correlation between cation and chain diffusion constants, both of which closely follow a Vogel-Tammann-Fulcher (VTF) law with a common VTF-temperature, which increases with ion concentration. These findings are discussed in connection with recent experiments revealing a salt-induced change of the glass transition temperature and a pronounced asymmetry in the cation and anion diffusion constants.
AB - Polymer chain and ion dynamics properties are investigated in a lattice model of polymer electrolytes, which emphasizes the difference in cation-polymer and anion-polymer interactions. The assumption of specific binding sites for cations on the chain molecules leads to a reduction of chain mobilities, which in turn suppresses diffusion of ions. We find a correlation between cation and chain diffusion constants, both of which closely follow a Vogel-Tammann-Fulcher (VTF) law with a common VTF-temperature, which increases with ion concentration. These findings are discussed in connection with recent experiments revealing a salt-induced change of the glass transition temperature and a pronounced asymmetry in the cation and anion diffusion constants.
UR - http://www.scopus.com/inward/record.url?scp=0000310928&partnerID=8YFLogxK
U2 - 10.1016/S0022-3093(98)00668-1
DO - 10.1016/S0022-3093(98)00668-1
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AN - SCOPUS:0000310928
SN - 0022-3093
VL - 235-237
SP - 748
EP - 752
JO - Journal of Non-Crystalline Solids
JF - Journal of Non-Crystalline Solids
ER -