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P. A. Golubev, G. Z. Tulibaeva, N. I. Shuvalova, O. V. Yarmolenko
Influence of fine-dispersed Li3N additive on electrochemical
properties of polymer electrolyte
Abstract
Influence of additives
fine-dispersed powder Li3N on electrochemical properties polymer gel-
electrolyte and its interface with metal Lithium is investigated. Lithium
nitride was received by reaction of dry nitrogen with metal Lithium within 5
hours at 100 °C, and
then it was crushed on a spherical grinding mill in an inert atmosphere. The
size of particles has made 100 nanometers. Dependence of an electrochemical
impedance of polymer electrolyte on the added amount of fine-dispersed powder
of Li3N – 0,5 w/w% and 1,0 w/w% was measured. It is found, that introduction 0,5 w/w% Li3N
improves volume conductivity of polymer electrolyte in 2,4 times, but further
increaseamount of Li3N (1,0 w/w%) does not
change this characteristic. On interface with metal Lithium, on the contrary,
Li3N- additive increases charge transfer resistance in
1,5 times that speaks about difficulty of electrochemical reaction Li+
+ e"Li at presence Li3N.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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