title: Selective and low temperature transition metal intercalation in layered tellurides.
abstract: Layered materials embrace rich intercalation reactions to accommodate high concentrations of foreign species within their structures, and find many applications spanning from energy storage, ion exchange to secondary batteries. Light alkali metals are generally most easily intercalated due to their light mass, high charge/volume ratio and in many cases strong reducing properties. An evolving area of materials chemistry, however, is to capture metals selectively, which is of technological and environmental significance but rather unexplored. Here we show that the layered telluride T2PTe2(T=Ti, Zr) displays exclusive insertion of transition metals (for example, Cd, Zn) as opposed to alkali cations, with tetrahedral coordination preference to tellurium. Interestingly, the intercalation reactions proceed in solid state and at surprisingly low temperatures (for example, 80 °C for cadmium in Ti2PTe2). The current method of controlling selectivity provides opportunities in the search for new materials for various applications that used to be possible only in a liquid.
authors.affiliation: Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan.
authors.forename: Takeshi
authors.initials: T
authors.lastname: Yajima
authors.affiliation: Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan.
authors.forename: Masaki
authors.initials: M
authors.lastname: Koshiko
authors.affiliation: Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan.
authors.forename: Yaoqing
authors.identifier: 0000-0001-7470-1086
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka 567-0047, Japan.|CREST, Japan Science and Technology Agency (JST), Chiyoda-ku, Tokyo 102-0076, Japan.
authors.forename: Tamio
authors.identifier: 0000-0001-7109-2801
authors.initials: T
authors.lastname: Oguchi
authors.affiliation: Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan.
authors.forename: Wen
authors.initials: W
authors.lastname: Yu
authors.affiliation: Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan.
authors.forename: Daichi
authors.initials: D
authors.lastname: Kato
authors.affiliation: Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan.
authors.forename: Yoji
authors.initials: Y
authors.lastname: Kobayashi
authors.affiliation: Graduate School of Human and Environmental Studies, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan.
authors.forename: Yuki
authors.initials: Y
authors.lastname: Orikasa
authors.affiliation: Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan.
authors.forename: Takafumi
authors.initials: T
authors.lastname: Yamamoto
authors.affiliation: Graduate School of Human and Environmental Studies, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan.
authors.forename: Yoshiharu
authors.initials: Y
authors.lastname: Uchimoto
authors.affiliation: School of Physical Sciences, University of Kent, Canterbury, Kent CT2 7NH, UK.
authors.forename: Mark A
authors.identifier: 0000-0002-7886-6205
authors.initials: MA
authors.lastname: Green
authors.affiliation: Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan.|CREST, Japan Science and Technology Agency (JST), Chiyoda-ku, Tokyo 102-0076, Japan.
authors.forename: Hiroshi
authors.identifier: 0000-0002-3911-9864
authors.initials: H
authors.lastname: Kageyama