锐钛矿
金红石
电解质
锂(药物)
二氧化钛
材料科学
插层(化学)
阴极
钛
无机化学
化学工程
聚合物
化学
物理化学
复合材料
有机化学
冶金
电极
医学
工程类
内分泌学
光催化
催化作用
标识
DOI:10.1016/0167-2738(92)90449-y
摘要
Performance data on two polymorphs of titanium dioxide (anatase and rutile) operating in a lithium polymer electrolyte cell at 120°C are presented. On the first discharge lithium ions can be electrochemically inserted into both forms to an approximate composition LiTiO2. However, only the rutile material cycles with a significant capacity (∼0.5 Li/TiO2) with an average cell voltage of 1.73 V corresponding to a theoretical energy density of ∼290 W h kg−1. Our results are in contrast to earlier work reported on the intercalation of lithium into these phases at room temperature, where only the anatase form was found to intercalate lithium. X-ray diffraction data indicate that the rutile form undergoes a structural change during the first discharge resulting in the formation of a hexagonal form of LiTiO2.
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