抄録
The rocking chair type lithium secondary battery using a nonflammable LiCl saturated AlCl3–1–ethyl–3–methylimidazolium chloride (EMIC) electrolyte operated at ambient temperatures has been developed. In this paper, the positive electrode (crystalline V2O5) characteristics and the discharge-charge cycle performance in this electrolyte were investigated. The content of the intercalated lithium in V2O5 and the structure of LixV2O5 were observed. As a result, the main reaction during the discharge-charge cycle was considered to be the intercalation and deintercalation reactions of lithium in the V2O5. When the discharge-charge cycle of the V2O5 electrode was performed, the life of the cycle ability was over more than 100. The nonflammable rocking chair type Li–Al¦LiCl saturated AlCl3–EMIC ¦ V2O5 secondary cell showed 3.2~2.0 V discharge voltage and 150 Ah/kg of discharge capacity.
