New fully polymeric proton solvents with high proton mobility

被引：154

作者：

Herz, HG

Kreuer, KD

Maier, J

Scharfenberger, G

Schuster, MFH

Meyer, WH

机构：

[1] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany

[2] Max Planck Inst Polymer Res, D-55128 Mainz, Germany

来源：

ELECTROCHIMICA ACTA | 2003年 / 48卷 / 14-16期

关键词：

polymeric proton solvent; imidazole; proton conductivity; structure diffusion; sol-gel process; radical polymerisation; polystyrene;

D O I：

10.1016/S0013-4686(03)00200-7

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The preparation and characterisation of fully polymeric-bound heterocycles as proton solvents is presented. Two different types of polymers are prepared: Polystyrene with imidazole terminated flexible side chains and benzimidazole covalently bonded to an inorganic SiO2 network by a flexible spacer. High proton conductivities of up to 7 x 10(-4) S cm(-1) at 200 degreesC have been obtained for these polymers in the absence of water. The presence of protonic charge carriers (protonated and deprotonated heterocycles) is a result of self-dissociation and the proton conductance is suggested to occur via intermolecular proton transfer and structural reorganisation within a dynamical hydrogen bond network formed by the aggregation of the terminating heterocycles. (C) 2003 Elsevier Science Ltd. All rights reserved.

引用

页码：2165 / 2171

页数：7

共 11 条

[1] Proton conducting blends of poly(4-vinylimidazole) with phosphoric acid [J].