Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

ε-VOPO4 cathode for lithium ion batteries

Patent ·
OSTI ID:2542267

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.

Research Organization:
State Univ. of New York (SUNY), Binghamton, NY (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
SC0012583
Assignee:
The Research Foundation for The State University of New York (Binghamton, NY)
Patent Number(s):
12,002,957
Application Number:
18/354,493
OSTI ID:
2542267
Country of Publication:
United States
Language:
English

References (26)

ChemInform Abstract: The Mixed Anionic Framework in the Structure of Na2(MnF(PO4)). journal July 1997
RbVOPO4 and CsVOPO4, Two Vanadyl(IV) Orthophosphates with an Intersecting Tunnel Structure and Discrete VO5 Pyramids journal March 1993
Ion-Exchange Properties of Alkali-Metal Redox-Intercalated Vanadyl Phosphate journal January 2002
Optimized LiVOPO4 for cathodes in Li-ion rechargeable batteries journal September 2005
Redox transformations of simple vanadium phosphates: the synthesis of ε-VOPO4 journal April 1996
The vanadium monophosphates AVOPO4: Synthesis of a second form β-KVOPO4 and structural relationships in the series journal May 2001
Review on vanadium phosphates with mono and divalent metallic cations: syntheses, structural relationships and classification, properties journal December 2000
Thermodynamics, Kinetics and Structural Evolution of ε-LiVOPO 4 over Multiple Lithium Intercalation journal February 2016
Design and Preparation of Materials for Advanced Electrochemical Storage journal June 2012
Phosphates as Lithium-Ion Battery Cathodes: An Evaluation Based on High-Throughput ab Initio Calculations journal August 2011
Chemical and Electrochemical Lithiation of LiVOPO 4 Cathodes for Lithium-Ion Batteries journal June 2014
Surface Effects on the Physical and Electrochemical Properties of Thin LiFePO 4 Particles journal January 2008
Crystal Chemical Aspects of Vanadium:  Polyhedral Geometries, Characteristic Bond Valences, and Polymerization of (VO n ) Polyhedra journal May 2000
What Are Batteries, Fuel Cells, and Supercapacitors? journal October 2004
Lithium Batteries and Cathode Materials journal October 2004
Ultimate Limits to Intercalation Reactions for Lithium Batteries journal October 2014
Multiple phases in the ε-VPO 4 O–LiVPO 4 O–Li 2 VPO 4 O system: a combined solid state electrochemistry and diffraction structural study journal January 2014
Enabling multi-electron reaction of ε-VOPO 4 to reach theoretical capacity for lithium-ion batteries journal January 2018
Modelling phase changes in the potassium titanyl phosphate system journal January 1997
Layered vanadium and molybdenum oxides: batteries and electrochromics journal January 2009
K2V2O2(AsO4)2 journal June 2012
Capturing metastable structures during high-rate cycling of LiFePO4 nanoparticle electrodes journal June 2014
Refinement of crystal structure of a Ge-analogue of natisite Na2{TiGeO4} and prediction of new phases with anionic {MTO5} radicals journal July 2000
Highly Reversible Li Insertion at 4 V in ɛ-VOPO[sub 4]/α-LiVOPO[sub 4] Cathodes journal January 1999
Electrochemical Behavior of Nanostructured ɛ-VOPO4 over Two Redox Plateaus journal January 2013
Interfacial Effects of Electrochemical Lithiation of Epsilon-VOPO4 and Evolution of the Electronic Structure journal July 2015

Similar Records

ϵ-VOPO4 cathode for lithium ion batteries
Patent · Tue Aug 01 00:00:00 EDT 2023 · OSTI ID:2222041

ϵ-VOPO4 cathode for lithium ion batteries
Patent · Mon Feb 14 19:00:00 EST 2022 · OSTI ID:1892621

Comparison of the polymorphs of VOPO4 as multi-electron cathodes for rechargeable alkali-ion batteries
Journal Article · Sat Dec 31 19:00:00 EST 2016 · Journal of Materials Chemistry. A · OSTI ID:1493610

Related Subjects