ε-VOPO4: Electrochemical Synthesis and Enhanced Cathode Behavior
作者： Yanning Song , Peter Y. Zavalij , M. Stanley Whittingham
DOI: 10.1149/1.1862265
关键词: Chemistry 、 Tetragonal crystal system 、 Electrochemistry 、 Cathode 、 Lithium 、 Monoclinic crystal system 、 Inorganic chemistry 、 Spinel 、 Hydrogen 、 Thermal decomposition
摘要: e-VOPO 4 was synthesized from the monoclinic and tetragonal forms of H 2 VOPO by electrochemical de-intercalation protons in both nonaqueous aqueous electrolytes, as well thermal decomposition ofH . The so formed readily reversibly reacts with up to two lithium ions. precursor has a reversible capacity exceeding 130 mAh/g on its higher voltage plateau, even at mA/cm cycling rate 95 comparable that spinel LiMn O electronic conductivity is 1 X 10 - 6 S.cm chemical diffusion coefficients range 5 9 cm s depending composition. structure changes little during hydrogen removal intercalation, are reversible.
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