skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Rational synthesis and electrochemical performance of LiVOPO4 polymorphs

Journal Article · · Journal of Materials Chemistry. A
DOI:https://doi.org/10.1039/c8ta12531g· OSTI ID:1529230
ORCiD logo [1]; ORCiD logo [2];  [3];  [1]; ORCiD logo [1];  [2];  [4];  [1];  [1];  [1];  [2];  [5];  [2];  [1];  [3]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [1]
  1. Binghamton Univ., NY (United States)
  2. Univ. of California San Diego, La Jolla CA (United States)
  3. Argonne National Lab. (ANL), Lemont, IL (United States). Advanced Photon Source (APS)
  4. Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)
  5. Univ. of California, San Diego, CA (United States)

LiVOPO4 is a promising cathode material for Li-ion batteries due to its ability to intercalate up to two electrons per vanadium redox center. However, LiVOPO4 exhibits polymorphism, forming either the αI, β, or ε phase. A thorough comparison between the properties of these phases is difficult because they usually differ in synthesis methods. Here, we synthesize all three polymorphs by annealing a single precursor, LiVOPO4·2H2O, thereby reducing the effect of synthesis on the properties of the materials. We show through in situ XRD with heating and DFT calculations that, in terms of stability, αI-LiVOPO4 $$\lll$$ ε-LiVOPO4 ≤ β-LiVOPO4. We also show experimentally and through DFT calculations that the tolerance to O-interstitials and O-vacancies can explain the differences in stability, morphology, and electrochemical performance between β- and ε-LiVOPO4. β-LiVOPO4 is more stable in the presence of O-interstitials while ε-LiVOPO4 is favored in the presence of O-vacancies. These defects affect the surface energies and morphology of the products formed, which are confirmed in the Wulff shape calculations and transmission electron microscopy images. These imply that β-LiVOPO4 has an improved rate performance under an oxidizing atmosphere due to the increased presence of facets with superior ion diffusion at the surface. This improved performance is seen by the improved rate capability and capacity of β-LiVOPO4 in the high-voltage region. In contrast, synthesis conditions have little effect on improving the rate performance of ε-LiVOPO4.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Northeastern Center for Chemical Energy Storage (NECCES); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS); Brookhaven National Laboratory (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; National Science Foundation (NSF)
Grant/Contract Number:
AC02-05CH11231; SC0012583; AC02-06CH11357; SC0012704; ACI-1053575
OSTI ID:
1529230
Alternate ID(s):
OSTI ID: 1501958
Journal Information:
Journal of Materials Chemistry. A, Vol. 7, Issue 14; ISSN 2050-7488
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 19 works
Citation information provided by
Web of Science

References (58)

ATHENA , ARTEMIS , HEPHAESTUS : data analysis for X-ray absorption spectroscopy using IFEFFIT journal June 2005
Synthesis and electrochemical studies of layer-structured metastable αI-LiVOPO4 journal January 2012
Structural Changes in Li 2 MnO 3 Cathode Material for Li-Ion Batteries journal December 2013
Hydrothermal synthesis, structure, and magnetic properties of a new polymorph of lithium vanadyl(IV) orthophosphate: β-LiVOPO4 journal December 1991
Phosphates as Lithium-Ion Battery Cathodes: An Evaluation Based on High-Throughput ab Initio Calculations journal August 2011
Phase stability and its impact on the electrochemical performance of VOPO 4 and LiVOPO 4 journal January 2014
Lithium Batteries and Cathode Materials journal October 2004
Comparison of the polymorphs of VOPO 4 as multi-electron cathodes for rechargeable alkali-ion batteries journal January 2017
LiVOPO4: A cathode material for 4V lithium ion batteries journal April 2009
Advanced High Energy Density Secondary Batteries with Multi-Electron Reaction Materials journal May 2016
ε- and β-LiVOPO 4 : Phase Transformation and Electrochemistry journal August 2017
Enabling multi-electron reaction of ε-VOPO 4 to reach theoretical capacity for lithium-ion batteries journal January 2018
Li 3 VP 3 O 9 N as a Multielectron Redox Cathode for Li-Ion Battery journal May 2018
Na3MnCO3PO4 – A High Capacity, Multi-Electron Transfer Redox Cathode Material for Sodium Ion Batteries journal April 2015
Crystal Chemistry of Electrochemically and Chemically Lithiated Layered α I -LiVOPO 4 journal September 2015
GSAS-II : the genesis of a modern open-source all purpose crystallography software package journal March 2013
Electron-energy-loss spectra and the structural stability of nickel oxide: An LSDA+U study journal January 1998
Multi-electron reaction materials for high energy density batteries journal January 2010
A high-throughput framework for determining adsorption energies on solid surfaces journal March 2017
Lithium Diffusion in Layered Li[sub x]CoO[sub 2] journal January 1999
Density-functional theory and strong interactions: Orbital ordering in Mott-Hubbard insulators journal August 1995
ε-VOPO[sub 4]: Electrochemical Synthesis and Enhanced Cathode Behavior journal January 2005
Vanadyl phosphates of VOPO4 as a cathode of Li-ion rechargeable batteries journal June 2003
Selective Synthesis of Lithium Ion-Conductive β-LiVOPO 4 Crystals via Glass-Ceramic Processing journal December 2008
KVOPO 4 : A New High Capacity Multielectron Na-Ion Battery Cathode journal May 2018
Designing Multielectron Lithium-Ion Phosphate Cathodes by Mixing Transition Metals journal May 2013
A versatile sample-environment cell for non-ambient X-ray scattering experiments journal July 2008
Morphology and surface properties of LiVOPO 4 : a first principles study journal January 2014
A review on the key issues for lithium-ion battery management in electric vehicles journal March 2013
Ultimate Limits to Intercalation Reactions for Lithium Batteries journal October 2014
Electrode Materials for Rechargeable Sodium-Ion Batteries: Potential Alternatives to Current Lithium-Ion Batteries journal May 2012
Phospho-olivines as Positive-Electrode Materials for Rechargeable Lithium Batteries journal April 1997
Phase transition induced by lithium insertion in αI- and αII-VOPO4 journal August 2004
Synthesis of β-LiVOPO4/C by Sol-gel Method and Microwave Sintering as Cathode Material for Lithium Ion Batteries journal November 2017
Thermodynamics, Kinetics and Structural Evolution of ε-LiVOPO 4 over Multiple Lithium Intercalation journal February 2016
The Development and Future of Lithium Ion Batteries journal December 2016
Synthesis and Characterization of LiVOPO<sub>4</sub> Cathode Material by Solid-State Method journal July 2012
First-principles study of surface properties of Li Fe P O 4 : Surface energy, structure, Wulff shape, and surface redox potential journal October 2007
Role of disorder in limiting the true multi-electron redox in ε-LiVOPO 4 journal January 2018
Electrochemical Performance of Nanosized Disordered LiVOPO 4 journal July 2018
Real-space multiple-scattering calculation and interpretation of x-ray-absorption near-edge structure journal September 1998
First principles phonon calculations in materials science journal November 2015
Commentary: The Materials Project: A materials genome approach to accelerating materials innovation journal July 2013
Synthesis of LiVOPO4 for cathode materials by coordination and microwave sintering journal August 2011
A structural explanation for the polymorphism of the α form of anhydrous vanadyl phosphate journal December 1981
Electrochemical Properties of Beta-LiVOPO[sub 4] Prepared by Carbothermal Reduction journal January 2004
Building better batteries journal February 2008
Chemical and Electrochemical Lithiation of LiVOPO 4 Cathodes for Lithium-Ion Batteries journal June 2014
Synthesis and Crystallographic Study of Homeotypic LiVPO 4 F and LiVPO 4 O journal February 2012
Crystal structure of βVPO5 journal November 1972
Surface energies of elemental crystals journal September 2016
The stability of ionic crystal surfaces journal November 1979
History, Evolution, and Future Status of Energy Storage journal May 2012
Python Materials Genomics (pymatgen): A robust, open-source python library for materials analysis journal February 2013
Lithium Batteries and Cathode Materials journal December 2004
Voltage- and time-dependent valence state transition in cobalt oxide catalysts during the oxygen evolution reaction journal April 2020
Phosphates as Lithium-Ion Battery Cathodes: An Evaluation Based on High-Throughput Ab Initio Calculations journal August 2011
First principles phonon calculations in materials science preprint January 2015

Similar Records

Nonstoichiometry and Defects in Hydrothermally Synthesized ε-LiVOPO 4
Journal Article · Fri Jun 07 00:00:00 EDT 2019 · ACS Applied Energy Materials · OSTI ID:1529230

Thermodynamics, Kinetics and Structural Evolution of ε-LiVOPO 4 over Multiple Lithium Intercalation
Journal Article · Tue Mar 22 00:00:00 EDT 2016 · Chemistry of Materials · OSTI ID:1529230

Evolution of lithium ordering with (de)-lithiation in β-LiVOPO 4 : insights through solid-state NMR and first principles DFT calculations
Journal Article · Thu Feb 27 00:00:00 EST 2020 · Journal of Materials Chemistry. A · OSTI ID:1529230