Mapping Structure-Composition-Property Relationships in V- and Fe-Doped LiMnPO4 Cathodes for Lithium-Ion Batteries

Ian D. Johnson; Melanie Loveridge; Rohit Bhagat; Jawwad A. Darr

doi:10.1021/acscombsci.6b00035

Mapping Structure-Composition-Property Relationships in V- and Fe-Doped LiMnPO₄ Cathodes for Lithium-Ion Batteries

Ian D. Johnson
, Melanie Loveridge
, Rohit Bhagat
, Jawwad A. Darr

University College London
University of Warwick

Research output: Contribution to journal › Article › peer-review

25 Citations (Scopus)

141 Downloads (Pure)

Abstract

A series of LiMn_1-x-yFe_xV_yPO₄ (LMFVP) nanomaterials have been synthesized using a pilot-scale continuous hydrothermal synthesis process (CHFS) and evaluated as high voltage cathodes in Li-ion batteries at a production rate of 0.25 kg h^-1. The rapid synthesis and screening approach has allowed the specific capacity of the high Mn content olivines to be optimized, particularly at high discharge rates. Consistent and gradual changes in the structure and performance are observed across the compositional region under investigation; the doping of Fe at 20 at% (with respect to Mn) into lithium manganese phosphate, rather than V or indeed codoping of Fe and V, gives the best balance of high capacity and high rate performance.

Original language	English
Pages (from-to)	665-672
Number of pages	8
Journal	ACS Combinatorial Science
Volume	18
Issue number	11
Early online date	15 Sept 2016
DOIs	https://doi.org/10.1021/acscombsci.6b00035
Publication status	Published - 14 Nov 2016
Externally published	Yes

Bibliographical note

This is an open access article published under a Creative Commons Attribution (CC-BY) License, which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.

Funding

EPSRC are thanked for funding the ELEVATE project (EP/M009394/1) and the Centre for Doctoral Training in Molecular Modelling and Materials Science (UCL, U.K.) which supports a studentship for Ian Johnson. The Warwick Manufacturing Group (WMG, University of Warwick, U.K.) are thanked for the use of their dry room and coin cell assembly equipment.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

cathode
continuous hydrothermal synthesis
doped LMP
high energy
lithium-ion battery

ASJC Scopus subject areas

General Chemistry

Access to Document

10.1021/acscombsci.6b00035Licence: CC BY

PublishedFinal published version, 4.84 MBLicence: CC BY

Cite this

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title = "Mapping Structure-Composition-Property Relationships in V- and Fe-Doped LiMnPO4 Cathodes for Lithium-Ion Batteries",

abstract = "A series of LiMn1-x-yFexVyPO4 (LMFVP) nanomaterials have been synthesized using a pilot-scale continuous hydrothermal synthesis process (CHFS) and evaluated as high voltage cathodes in Li-ion batteries at a production rate of 0.25 kg h-1. The rapid synthesis and screening approach has allowed the specific capacity of the high Mn content olivines to be optimized, particularly at high discharge rates. Consistent and gradual changes in the structure and performance are observed across the compositional region under investigation; the doping of Fe at 20 at\% (with respect to Mn) into lithium manganese phosphate, rather than V or indeed codoping of Fe and V, gives the best balance of high capacity and high rate performance.",

keywords = "cathode, continuous hydrothermal synthesis, doped LMP, high energy, lithium-ion battery",

author = "Johnson, \{Ian D.\} and Melanie Loveridge and Rohit Bhagat and Darr, \{Jawwad A.\}",

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AU - Johnson, Ian D.

AU - Loveridge, Melanie

AU - Bhagat, Rohit

AU - Darr, Jawwad A.

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AB - A series of LiMn1-x-yFexVyPO4 (LMFVP) nanomaterials have been synthesized using a pilot-scale continuous hydrothermal synthesis process (CHFS) and evaluated as high voltage cathodes in Li-ion batteries at a production rate of 0.25 kg h-1. The rapid synthesis and screening approach has allowed the specific capacity of the high Mn content olivines to be optimized, particularly at high discharge rates. Consistent and gradual changes in the structure and performance are observed across the compositional region under investigation; the doping of Fe at 20 at% (with respect to Mn) into lithium manganese phosphate, rather than V or indeed codoping of Fe and V, gives the best balance of high capacity and high rate performance.

KW - cathode

KW - continuous hydrothermal synthesis

KW - doped LMP

KW - high energy

KW - lithium-ion battery

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