Hyperbranched polymer electrolyte conductivities

NISHIMOTO, A., AGEHARA, K., FURUYA, N., et al, High lonic conductivity of polyether-based network polymer electrolytes with hyperbranched side chains. Macromolecules, 1999, 32,1541-8. 

HONG, L., SHI, L., TANG, X., Conductivities and spectroscopic studies of polymer electrolytes based on linear polyurethane and hybrid and copolymer of linear and hyperbranched polyurethanes. Macromolecules, 2003,36,4989-94. 

Abstract This chapter describes the apphcation of hyperbranched polymer-based electrolyte membranes for high temperature fuel cells. Hyperbranched polymers with a sulfonic acid group or a phosphonic acid one as a proton source were synthesized and the proton conductivity, thermal property and fuel cell performance of their polymers and crosslinked membranes were investigated. The concept of the proton conduction coupled with the polymer chain motion was proposed for high temperature fuel cells. 

Li et al (2001, 2003) prepared a kind of hyperbranched solid polymer electrolyte with a low ion conductivity of about 10 S/cm at room temperature. Later, they added 10 wt% BaTiOs as ceramic fillers into this SPE, making the ion conductivity rise to 1.4 x 10 S/cm. 

K. Nogami, K. Sakamoto, T. Hayakawa, and M. Kakimoto. 2007. The effects of hyperbranched poly(siloxysilane)s on conductive polymer aluminum solid electrolytic capacitors. / Power Sources 166(2) 584-589. 

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