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Charge-Transfer Reaction at the Lithium Phosphorus Oxynitride Glass Electrolyte/Lithium Manganese Oxide Thin-Film Interface and Its Stability on Cycling

2006; Institute of Physics; Volume: 153; Issue: 5 Linguagem: Inglês

10.1149/1.2178647

1945-7111

Yasutoshi Iriyama, Kazuhiro Nishimoto, Chihiro Yada, Takeshi Abe, Zempachi Ogumi, Kenji Kikuchi,

Advanced battery technologies research

Charge-transfer reaction at a lithium manganese oxide thin-film electrode/lithium phosphorus oxynitride glass electrolyte interface was investigated using all-solid-state thin-film batteries . X-ray diffraction measurements revealed that the crystal structure of the thin-film electrode changed on depositing the thin-film electrode, but a thermal treatment at for re-formed the original crystal structure. The potential sweep curve of the thermally treated film battery was identical to the cyclic voltammogram of a thin-film electrode in a conventional organic electrolyte ( dissolved in propylene carbonate). In contrast to a interface, the charge-transfer resistance at the interface did not decrease sufficiently after the thermal treatment relative to the charge-transfer resistance of the interface. This indicates that there should be a compatible electrode and film electrolyte combination to obtain an effective decrease in the charge-transfer resistance. Charge–discharge tests revealed that the resultant film battery repeated stable charge-transfer reaction on its cycling compared with the organic electrolyte system. Also, this electrochemical stability was maintained at a high temperature , which is probably because the formation of the interface inhibited Mn dissolution from the thin-film electrode.