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Synthesis, structure, and pressure-induced polymerization of Li$$_{3}$$Fe(CN)$$_{6}$$ accompanied with enhanced conductivity

電気伝導度の増大を伴うLi$$_{3}$$Fe(CN)$$_{6}$$の合成とその構造および圧力誘起重合

Li, K.*; Zheng, H.*; 服部 高典; 佐野 亜沙美; Tulk, C. A.*; Molaison, J.*; Feygenson, M.*; Ivanov, I. N.*; Yang, W.*; Mao, H.-K.*

Li, K.*; Zheng, H.*; Hattori, Takanori; Sano, Asami; Tulk, C. A.*; Molaison, J.*; Feygenson, M.*; Ivanov, I. N.*; Yang, W.*; Mao, H.-K.*

3重結合における圧力誘起重合は共役二重結合を引き起こすと考えられている。比較的低い圧力において重合を起こす金属シアン化物を探索するために、無水のLi$$_{3}$$Fe(CN)$$_{6}$$を合成し、その結晶構造を調べた。実験の結果、CN$$^{-}$$の不可逆な結合が、工業的な装置でも実現できるほど低い圧力で達成された。それに伴い電気伝導度は3倍に増加し、重合化したLi$$_{3}$$Fe(CN)$$_{6}$$はリチウムイオン電池の電極として使える可能性がある。

Pressure-induced polymerization of triple bonds would produce conductive conjugated double bonds. To find a metal cyanide with a low polymerization pressure, anhydrous Li$$_{3}$$Fe(CN)$$_{6}$$ is synthesized and its crystal structure is determined. The irreversible bonding between the CN$$^{-}$$ can be realized by use of the industrial apparatus. The conductivity is enhanced by more than 3 orders of magnitude, which makes the polymerized Li$$_{3}$$Fe(CN)$$_{6}$$ a potential cathode material for rechargeable lithium batteries.

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パーセンタイル:65.74

分野:Chemistry, Inorganic & Nuclear

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