ϵ-VOPO4 cathode for lithium ion batteries

Siu, Carrie; Whittingham, M. Stanley

ϵ-VOPO₄ cathode for lithium ion batteries

Patent · 14 February 2022

OSTI ID:1892621

Siu, Carrie; Whittingham, M. Stanley

The epsilon polymorph of vanadyl phosphate, ε-VOPO₄, made from the solvothermally synthesized H₂VOPO₄, is a high density cathode material for lithium-ion batteries optimized to reversibly intercalate two Li-ions to reach the full theoretical capacity at least 50 cycles with a coulombic efficiency of 98%. This material adopts a stable 3D tunnel structure and can extract two Li-ions per vanadium ion, giving a theoretical capacity of 305 mAh/g, with an upper charge/discharge plateau at around 4.0 V, and one lower at around 2.5 V.

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Research Organization:: State University of New York (SUNY), Binghamton, NY (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: SC0012583

Assignee:: The Research Foundation of State University of New York (Binghamton, NY)

Patent Number(s):: 11,251,430

Application Number:: 16/291,617

OSTI ID:: 1892621

Country of Publication:: United States

Language:: English

References (27)

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