Вид документа : Статья из журнала Шифр издания : 54/I-60 Автор(ы) : Bushkova O. V., Koryakova I.P., Skorik Yu.A., Lirova B.I. , Pestov A. V., Zhukovskii V.M. Заглавие : Influence of metal coordination on conductivity behavior in poly(butadiene-acrylonitrile)-CoCl2 system Место публикации : Electrochimica Acta. - 2008. - Vol. 53, № 16. - С. 5322-5333 ББК : 54 Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: The metal complex formation and the electrical properties of amorphous solid polymer electrolytes, based on poly(butadiene-acrylonitrile) copolymer (PBAN) and CoCl2, have been studied over the homogeneity region of the system limited by the CoCl2 concentration of 1.89 mol kg-1. It has been found that ionic conductivity is carried out by the unipolar anion transfer at lower CoCl2 concentrations (up to 0.10 mol kg-1). As the CoCl2 concentration increases, electronic conductivity appears in addition to ionic conductivity, and the former becomes dominant, starting from 0.38 mol kg-1. It has been shown that the nature of charge carriers is determined by the composition of metal complexes formed by CoCl2 and the macromolecular solvent PBAN. At lower concentrations, the [Co2L2Cl4]0 dimers are the predominant species (L being macromolecule side groups C{triple bond, long}N), and their dissociation is followed by the formation of mobile Cl- anions and immobile binuclear [Co2Cl3]+ complexes. As CoCl2 concentration increases, polynuclear [ConL2Cl2n]0 (n 2) complexes appear (L being C{triple bond, long}N and C{double bond, long}C groups of PBAN). Specific features of chemical bonds in ?-complexes of transition metals result in the appearance of electronic charge carriers. The abrupt increase in conductivity observed at the highest CoCl2 concentration is connected with the formation of a percolation network of polynuclear [ConL2Cl2n]0 complexes Держатели документа: Центральная научная библиотека УрО РАН Доп.точки доступа: Bushkova, O. V.; Koryakova, I.P.; Skorik, Yu.A.; Lirova, B.I. ; Pestov, A. V.; Zhukovskii, V.M.