A solid state secondary battery based on the Na+ conducting
polymer electrolyte with a configuration Na (−) | [wt.% 0.3 PEO-0.7
PEG]6:NaPO3 |composite cathodematerial based on Na0.7CoO2 prepared
by different preparative techniques (+), has been fabricated in a
Swagelok cell assembly. In the present study, 80 wt.% of the active
material Na0.7CoO2, 10 wt.% acetylene black granules (M/s. Denka
Singapore Pvt. Ltd.) and 10 wt.% of poly-vinylidine fluoride (PVDF)
(Sigma Aldrich) binder are mixed by adding few drops of N-methyl-2-
pyrrolidone.The composite cathode slurry is thoroughly mixed in a
mortar for about 30 min