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Title: Comparison of the polymorphs of VOPO4 as multi-electron cathodes for rechargeable alkali-ion batteries

Journal Article · · Journal of Materials Chemistry. A
DOI:https://doi.org/10.1039/c7ta04558a· OSTI ID:1493610

Multi-electron polyanion cathodes offer the potential for achieving both high voltage and high capacity in rechargeable alkali-ion batteries. Among the few materials known to exhibit multi-electron cycling, the polymorphs of VOPO4, which operate on the V3+–V4+–V5+ redox couples, are particularly promising due to the high gravimetric capacities that have been achieved and the high voltage of the V4+/5+ couple. In this work, we performed a systematic first principles investigation, supported by careful electrochemical characterization and published experimental data, of the relative thermodynamic stability, voltage, band gap, and diffusion kinetics for alkali intercalation into the β, ε and αI polymorphs of VOPO4. We find that all VOPO4 polymorphs remain reasonably stable with the insertion of one alkali ion per V, but are significantly destabilized with the insertion of two alkali ions per V. The voltages for Na insertion are ~0.33–0.69 V lower than those for Li insertion. We find that the αI polymorph is predicted to have higher Li+ migration barriers and larger band gaps than the β and ε polymorphs, which account for the relatively worse electrochemical cycling performance observed. On the other hand, only the αI polymorph exhibits reasonably low barriers for Na+ migration compared to the β and ε polymorphs, which are consistent with observed electrochemical performances reported thus far in the literature. We also show that differences in the voltage, kinetics and rate capability of these different polymorphs for Li and Na insertion can be traced back to their fundamentally different VO6/VO5-PO4 frameworks.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
DOE Contract Number:
SC0012583
OSTI ID:
1493610
Journal Information:
Journal of Materials Chemistry. A, Vol. 5, Issue 33; ISSN 2050-7488
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English

References (66)

Generalized Gradient Approximation Made Simple journal October 1996
Synthesis and electrochemical studies of layer-structured metastable αI-LiVOPO4 journal January 2012
Efficient hybrid density functional calculations in solids: Assessment of the Heyd–Scuseria–Ernzerhof screened Coulomb hybrid functional journal July 2004
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
A combined first principles and experimental study on Na3V2(PO4)2F3 for rechargeable Na batteries journal January 2012
Phase stability and its impact on the electrochemical performance of VOPO 4 and LiVOPO 4 journal January 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
Projector augmented-wave method journal December 1994
Impact of the Carbon Coating Thickness on the Electrochemical Performance of LiFePO[sub 4]/C Composites journal January 2005
The crystal structure of ε-VOPO4 journal July 2006
A Computational Investigation of Li 9 M 3 (P 2 O 7 ) 3 (PO 4 ) 2 (M = V, Mo) as Cathodes for Li Ion Batteries journal January 2012
Electrochemical Property:  Structure Relationships in Monoclinic Li 3 - y V 2 (PO 4 ) 3 journal August 2003
Layered Lithium Vanadium Fluorophosphate, Li 5 V(PO 4 ) 2 F 2 : A 4 V Class Positive Electrode Material for Lithium-Ion Batteries journal July 2008
Crystal Structure of α-VPO 5 journal August 1973
Crystal Chemistry of Electrochemically and Chemically Lithiated Layered α I -LiVOPO 4 journal September 2015
Voltage, stability and diffusion barrier differences between sodium-ion and lithium-ion intercalation materials journal January 2011
Synthesis, Structure and Electrochemistry of Lithium Vanadium Phosphate Cathode Materials journal January 2011
Silicate cathodes for lithium batteries: alternatives to phosphates? journal January 2011
Electron-energy-loss spectra and the structural stability of nickel oxide: An LSDA+U study journal January 1998
Particle Size Dependence of the Ionic Diffusivity journal October 2010
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
A climbing image nudged elastic band method for finding saddle points and minimum energy paths journal December 2000
Effects of Na Substitution on Li Ion Migration in Li 2 CoSiO 4 Cathode Material journal January 2013
The Inorganic Crystal Structure Database (ICSD)—Present and Future journal January 2004
Electrochemical Behavior of Nanostructured ɛ-VOPO4 over Two Redox Plateaus journal January 2013
Improved initial guess for minimum energy path calculations journal June 2014
Algorithms and tools for high-throughput geometry-based analysis of crystalline porous materials journal February 2012
Ultimate Limits to Intercalation Reactions for Lithium Batteries journal October 2014
Phospho-olivines as Positive-Electrode Materials for Rechargeable Lithium Batteries journal April 1997
Highly Reversible Li Insertion at 4 V in ɛ-VOPO[sub 4]/α-LiVOPO[sub 4] Cathodes journal January 1999
Lithium Iron(II) Phospho-olivines Prepared by a Novel Carbothermal Reduction Method journal January 2003
Redox transformations of simple vanadium phosphates: the synthesis of ε-VOPO4 journal April 1996
Towards the understanding of poor electrochemical activity of triclinic LiVOPO4: Experimental characterization and theoretical investigations journal October 2008
Phase transition induced by lithium insertion in αI- and αII-VOPO4 journal August 2004
Interfacial Effects in ε-Li x VOPO 4 and Evolution of the Electronic Structure journal December 2015
Accurate treatment of solids with the HSE screened hybrid journal October 2010
Electrochemical and Thermal Properties of NASICON Structured Na 3 V 2 (PO 4 ) 3 as a Sodium Rechargeable Battery Cathode: A Combined Experimental and Theoretical Study journal January 2012
Thermodynamics, Kinetics and Structural Evolution of ε-LiVOPO 4 over Multiple Lithium Intercalation journal February 2016
Microwave-Assisted Solvothermal Synthesis and Characterization of Various Polymorphs of LiVOPO 4 journal April 2013
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
Ultrathin Nanosheets of Li 2 MSiO 4 (M = Fe, Mn) as High-Capacity Li-Ion Battery Electrode journal February 2012
Structure and Lithium Transport Pathways in Li 2 FeSiO 4 Cathodes for Lithium Batteries journal August 2011
Commentary: The Materials Project: A materials genome approach to accelerating materials innovation journal July 2013
The Materials Application Programming Interface (API): A simple, flexible and efficient API for materials data based on REpresentational State Transfer (REST) principles journal February 2015
Uniform second Li ion intercalation in solid state ϵ-LiVOPO4 journal August 2016
Evaluation of Tavorite-Structured Cathode Materials for Lithium-Ion Batteries Using High-Throughput Computing journal September 2011
A 3.4 V Layered VOPO 4 Cathode for Na-Ion Batteries journal January 2016
Li−Fe−P−O 2 Phase Diagram from First Principles Calculations journal February 2008
Restoring the Density-Gradient Expansion for Exchange in Solids and Surfaces journal April 2008
Factors that affect Li mobility in layered lithium transition metal oxides journal September 2006
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
Li 2 MnSiO 4 Lithium Battery Material: Atomic-Scale Study of Defects, Lithium Mobility, and Trivalent Dopants journal November 2009
Chemical and Electrochemical Lithiation of LiVOPO 4 Cathodes for Lithium-Ion Batteries journal June 2014
Data-Driven First-Principles Methods for the Study and Design of Alkali Superionic Conductors journal September 2016
Explaining Performance-Limiting Mechanisms in Fluorophosphate Na-Ion Battery Cathodes through Inactive Transition-Metal Mixing and First-Principles Mobility Calculations journal August 2015
β-NaVOPO 4 Obtained by a Low-Temperature Synthesis Process: A New 3.3 V Cathode for Sodium-Ion Batteries journal February 2016
Crystal structure of βVPO5 journal November 1972
Improved tangent estimate in the nudged elastic band method for finding minimum energy paths and saddle points journal December 2000
Li/β-VOPO[sub 4]: A New 4 V System for Lithium Batteries journal January 1999
The crystal structure of δ-VOPO4 and its relationship to ω-VOPO4 journal July 2009
Exploration of NaVOPO4 as a cathode for a Na-ion battery journal January 2013
Python Materials Genomics (pymatgen): A robust, open-source python library for materials analysis journal February 2013

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