The Parent Li(OH)FeSe Phase of Lithium Iron Hydroxide Selenide Superconductors | Zendy

Daniel N. Woodruff | Zendy; Francesca Schild | Zendy; Craig V. Topping | Zendy; Simon J. Cassidy | Zendy; Jack N. Blandy | Zendy; Stephen J. Blundell | Zendy; Amber L. Thompson | Zendy; Simon J. Clarke | Zendy

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The Parent Li(OH)FeSe Phase of Lithium Iron Hydroxide Selenide Superconductors

Author(s) -

Daniel N. Woodruff,

Francesca Schild,

Craig V. Topping,

Simon J. Cassidy,

Jack N. Blandy,

Stephen J. Blundell,

Amber L. Thompson,

Simon J. Clarke

Publication year - 2016

Publication title -

inorganic chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.348

H-Index - 233

eISSN - 1520-510X

pISSN - 0020-1669

DOI - 10.1021/acs.inorgchem.6b01734

Subject(s) - selenide , chemistry , stoichiometry , hydroxide , superconductivity , lithium (medication) , inorganic chemistry , phase (matter) , oxidation state , lithium hydroxide , ion , catalysis , ion exchange , condensed matter physics , selenium , medicine , physics , organic chemistry , endocrinology , biochemistry

Lithiation of hydrothermally synthesized Li 1-x Fe x (OH)Fe 1-y Se turns on high-temperature superconductivity when iron ions are displaced from the hydroxide layers by reductive lithiation to fill the vacancies in the iron selenide layers. Further lithiation results in reductive iron extrusion from the hydroxide layers, which turns off superconductivity again as the stoichiometric composition Li(OH)FeSe is approached. The results demonstrate the twin requirements of stoichiometric FeSe layers and reduction of Fe below the +2 oxidation state as found in several iron selenide superconductors.

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