@article{oai:repo.lib.tut.ac.jp:00002051,
 author = {稲田, 亮史 and 森, 友也 and 熊坂, 玲衣 and 伊藤, 龍太 and 東城, 友都 and 櫻井, 庸司 and Inada, Ryoji and Mori, Tomoya and Kumasaka, Rei and Ito, Ryuta and Tojo, Tomohiro and Sakurai, Yoji},
 issue = {1},
 journal = {International Journal of Applied Ceramic Technology, International Journal of Applied Ceramic Technology},
 month = {Jan},
 note = {Electrochemical properties of mixed titanium‐niobium oxide TiNb2O7 (TNO) synthesized via vacuum annealing as high potential anode material for lithium‐ion batteries were investigated. Crystal structure, size, and morphology are nearly independent of the annealing atmosphere for starting materials but the color of vacuum‐annealed TNO (TNO‐V) is dark blue while white for the air‐annealed one (TNO‐A). X‐ray photoelectron spectroscopy analysis also indicated that Ti4+ and Nb5+ in TNO are partially reduced into Ti3+ and Nb4+ due to the introduction of oxygen vacancy. Electronic conductivity for TNO‐V was around 10−3 S cm−1 at room temperature and much higher than that for TNO‐A (=10−11 S cm−1). In electrochemical testing, both TNO‐A and TNO‐V electrodes showed reversible capacity of 260‐270 mAh g−1 at low current density of 0.5 mA cm−2, while at higher current density of 5.0 mA cm−2, TNO‐V electrode retained higher reversible capacity of 140 mAh g−1 than that for TNO‐A electrode (=80 mAh g−1). The enhancement of intrinsic electronic conductivity greatly contributes to improve the rate performance of TNO.},
 pages = {264--272},
 title = {Characterization of vacuum‐annealed TiNb2O7 as high potential anode material for lithium‐ion battery},
 volume = {16},
 year = {2019}
}