Morphology-controlled solvothermal synthesis of LiFePO4 as a cathode material for lithium-ion batteries

Yang, Shi-Jie; Zhou, Xufeng; Zhang, Jiangang; Liu, Zhaoping

doi:10.1039/c0jm01346c

Cited by 172 publications

(135 citation statements)

References 51 publications

Supporting

Mentioning

131

Contrasting

Order By: Relevance

“…All the patterns can be indexed as orthorhombic olivine phase (JCPDS No. 83-2092), 25,26 and there are no other impurities appeared in the XRD patterns, implying that well crystallized pure-phase LFP microspheres have been obtained. The carbon phase is not found for the relatively low content of graphene.…”

Section: Structure and Morphologymentioning

confidence: 82%

See 1 more Smart Citation

Nitrogen-doped graphene guided formation of monodisperse microspheres of LiFePO₄ nanoplates as the positive electrode material of lithium-ion batteries

Zhou

Deng

et al. 2016

J. Mater. Chem. A

View full text Add to dashboard Cite

show abstract

Section: Structure and Morphologymentioning

confidence: 82%

“…The inserted SEAD pattern indicates that the crystallographic facet of the LFP nanoplate is along the (101) plane, and the vertical direction is [010], which is beneficial for shortening the Li + diffusion route in LFP crystal. 3,25 Fig. 5f shows the side surface of a LFP nanoplate, and the corresponding SEAD pattern (inset of Fig.…”

mentioning

confidence: 99%

Nitrogen-doped graphene guided formation of monodisperse microspheres of LiFePO₄ nanoplates as the positive electrode material of lithium-ion batteries

Zhou

Deng

et al. 2016

J. Mater. Chem. A

View full text Add to dashboard Cite

show abstract

“…LiFePO4 platelet particles were synthesized using a solvothermal method with a mixed water and polyethylene glycol solvent, modified slightly from previous reports (20,40). Care was taken to ensure that the FeSO4 precursor is not exposed to dissolved oxygen in water.…”

Section: Synthesis Of Lifepo4mentioning

confidence: 99%

Origin and hysteresis of lithium compositional spatiodynamics within battery primary particles

Lim

Alsem

et al. 2016

Science

395

478

View full text Add to dashboard Cite

Abstract:The kinetics and uniformity of ion insertion reactions at the solid/liquid interface govern the rate capability and lifetime, respectively, of electrochemical devices such as Li-ion batteries.We develop an operando X-ray microscopy platform that maps the dynamics of the Li composition and insertion rate in LiXFePO4, and show that nanoscale spatial variations in rate and in composition control the lithiation pathway at the sub-particle length scale. Specifically, spatial variations in the insertion rate constant lead to the formation of nonuniform domains, and the composition dependence of the rate constant amplifies nonuniformities during delithiation but suppresses them during lithiation, and moreover stabilizes the solid solution during lithiation. This coupling of lithium composition and surface reaction rates controls the kinetics and uniformity during electrochemical ion insertion.One Sentence Summary: X-ray microscopy reveals the nanoscale evolution of composition and reaction rate inside a Li-ion battery during cycling Main Text: The insertion of a guest ion into the host crystal is the fundamental reaction underpinning insertion electrochemistry and has been applied to store energy (1), tune catalysts (2), and switch optoelectronic properties (3). In Li-ion batteries, for example, Li ions from the 2 liquid electrolyte insert into solid host particles in the electrode. Nanoscale intraparticle electrochemical inhomogeneities in phase and in composition are responsible for mechanical strain and fracture which decrease the reversibility of the reaction (4). Moreover, these nonuniformities make it difficult to correlate current-voltage measurements to microscopic ion insertion mechanisms. Simultaneously quantifying nonuniform nanoscale reaction kinetics and the underlying material composition at the solid-liquid interface holds the key to improving device performance.A gold standard material for investigating ion insertion reactions is LiXFePO4 (0

show abstract

“…Currently, the relatively low conductivity and poor Li transport properties can be improved by reducing crystal size and changing the microstructure/morphology, using surface modification and forming composite structures. Using these various methods, the electronic conductivity and Li diffusion coefficients can be increased up to 10 -1 S/cm and 10 -9 cm 2 /s, respectively [7][8][9][10][11][12][13][14][15][16]. Another drawback of the LiFePO4 is its relatively small voltage (3.4 V vs.…”

Section: Introductionmentioning

confidence: 99%

Density functional theory study of lithium diffusion at the interface between olivine-type LiFePO₄and LiMnPO₄

Shi

Wang

2016

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

Northumbria University has developed Northumbria Research Link (NRL) to enable users to access the University's research output. Copyright © and moral rights for items on NRL are retained by the individual author(s) and/or other copyright owners. Single copies of full items can be reproduced, displayed or performed, and given to third parties in any format or medium for personal research or study, educational, or not-for-profit purposes without prior permission or charge, provided the authors, title and full bibliographic details are given, as well as a hyperlink and/or URL to the original metadata page. The content must not be changed in any way. Full items must not be sold commercially in any format or medium without formal permission of the copyright holder. The full policy is available online: http://nrl.northumbria.ac.uk/policies.html This document may differ from the final, published version of the research and has been made available online in accordance with publisher policies. To read and/or cite from the published version of the research, please visit the publisher's website (a subscription may be required.) Abstract:Coating LiMnPO4 with a thin layer of LiFePO4 shows a better electrochemical performance than the pure LiFePO4 and LiMnPO4, thus it is critical to understand Li diffusion at their interfaces to improve the performance of electrode materials. Li diffusion at the (100)LiFePO4//(100)LiMnPO4, (100) interface is in the range of 3.65×10 -11 -5.28×10 -12 cm 2 /s, which is larger than that in the pure LiMnPO4 with a value of 7.5×10 -14 cm 2 /s. Therefore, the charging/discharging rate performance of the LiMnPO4 can be improved by surface coating with the LiFePO4.

show abstract

Morphology-controlled solvothermal synthesis of LiFePO4 as a cathode material for lithium-ion batteries

Cited by 172 publications

References 51 publications

Nitrogen-doped graphene guided formation of monodisperse microspheres of LiFePO₄ nanoplates as the positive electrode material of lithium-ion batteries

Nitrogen-doped graphene guided formation of monodisperse microspheres of LiFePO₄ nanoplates as the positive electrode material of lithium-ion batteries

Origin and hysteresis of lithium compositional spatiodynamics within battery primary particles

Density functional theory study of lithium diffusion at the interface between olivine-type LiFePO₄and LiMnPO₄

Contact Info

Product

Resources

About

Morphology-controlled solvothermal synthesis of LiFePO4 as a cathode material for lithium-ion batteries

Cited by 172 publications

References 51 publications

Nitrogen-doped graphene guided formation of monodisperse microspheres of LiFePO4 nanoplates as the positive electrode material of lithium-ion batteries

Nitrogen-doped graphene guided formation of monodisperse microspheres of LiFePO4 nanoplates as the positive electrode material of lithium-ion batteries

Origin and hysteresis of lithium compositional spatiodynamics within battery primary particles

Density functional theory study of lithium diffusion at the interface between olivine-type LiFePO4and LiMnPO4

Contact Info

Product

Resources

About

Nitrogen-doped graphene guided formation of monodisperse microspheres of LiFePO₄ nanoplates as the positive electrode material of lithium-ion batteries

Nitrogen-doped graphene guided formation of monodisperse microspheres of LiFePO₄ nanoplates as the positive electrode material of lithium-ion batteries

Density functional theory study of lithium diffusion at the interface between olivine-type LiFePO₄and LiMnPO₄