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Toward Enhanced Electronic and Ionic Conductivity in Olivine LiCoPO 4 Thin Film Electrode Material for 5 V Lithium Batteries: Effect of LiCo 2 P 3 O 10 Impurity Phase
Author(s) -
Cherkashinin Gennady,
Sharath Sankaramangalam Ulhas,
Jaegermann Wolfram
Publication year - 2017
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201602321
Subject(s) - materials science , lithium (medication) , electrode , electrochemistry , cobalt , stoichiometry , olivine , ionic conductivity , ionic bonding , redox , carbon fibers , conductivity , battery (electricity) , chemical engineering , inorganic chemistry , mineralogy , ion , chemistry , metallurgy , composite material , organic chemistry , composite number , thermodynamics , electrolyte , medicine , power (physics) , physics , engineering , endocrinology
Controlled off‐stoichiometry is induced in 5 V olivine LiCoPO 4 battery electrode material to overcome its insulating properties through the incorporation of lithium cobalt tripolyphosphate. An excellent electrochemical activity is achieved in this tailored carbon‐free material. The electronic structure of the polyanionic compound, the Co 2+ /Co 3+ redox energy, and quantification of the inductive effect are provided.