Electrochemical Li-ion intercalation in octacyanotungstate-bridged coordination polymer with evidence of three magnetic regimes

Jérôme Long, Daisuke Asakura, Masashi Okubo, Atsuo Yamada, Yannick Guari, Joulia Larionova

Research output: Contribution to journalArticlepeer-review

Abstract

Discovery of novel compounds capable of electrochemical ion intercalation is a primary step toward development of advanced electrochemical devices such as batteries. Although cyano-bridged coordination polymers including Prussian blue analogues have been intensively investigated as ion intercalation materials, the solid-state electrochemistry of the octacyanotungstate-bridged coordination polymer has not been investigated. Here, we demonstrate that an octacyanotungstate-bridged coordination polymer Tb(H2O)5[W(CN)8] operates as a Li+-ion intercalation electrode material. The detailed magnetic measurements reveal that the tunable amount of intercalated Li+ ion in the solid-state redox reaction between paramagnetic [WV(CN)8]3- and diamagnetic [WIV(CN)8]4- in the framework enables the electrochemical control of different magnetic regimes. While the initial ferromagnetic long-range ordering is irreversibly lost upon lithium insertion, electrochemical switching between paramagnetic and short-range ordering regimes can be achieved.

Original languageEnglish
Pages (from-to)7637-7646
Number of pages10
JournalInorganic Chemistry
Volume55
Issue number15
DOIs
Publication statusPublished - 2016 Aug 1
Externally publishedYes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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