Improved electrochemical performance of LiCoPO4 using eco-friendly aqueous binders

Eun Jeong Kim; Xiangling Yue; John T. S. Irvine; A. Robert Armstrong

doi:10.1016/j.jpowsour.2018.09.073

Improved electrochemical performance of LiCoPO₄ using eco-friendly aqueous binders

Eun Jeong Kim, Xiangling Yue, John T. S. Irvine, A. Robert Armstrong

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

Abstract

The electrochemical performance of LiCoPO₄ (LCP) as a high-voltage positive electrode for lithium-ion batteries is significantly improved by using the aqueous binder sodium carboxymethyl cellulose (CMC). The CMC not only provides a uniform electrode surface as shown by scanning electron microscopy and elemental mapping, but also suppresses the degradation of LiCoPO₄ by scavenging HF in the electrolyte solution as demonstrated by FT-IR. In comparison with other water-soluble binders such as sodium alginate (ALG) and polyacrylic acid sodium salt (PAA), the homogeneous distribution of CMC within the electrodes accompanied by high accessibility of carboxylate groups in CMC are shown to be crucial factors to achieve enhanced performance with an excellent capacity retention of 94% after 20 cycles at a rate of C/10.

Original language	English
Pages (from-to)	11-19
Number of pages	9
Journal	Journal of Power Sources
Volume	403
Early online date	28 Sept 2018
DOIs	https://doi.org/10.1016/j.jpowsour.2018.09.073
Publication status	Published - 1 Nov 2018

Keywords

Lithium ion batteries
High-voltage positive electrode materials
Aqueous binders
LiCoPO4

UN SDGs

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

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10.1016/j.jpowsour.2018.09.073

Main Text_Aqueousbinder_LCP_Revised2
© 2018 Elsevier B.V. All rights reserved. This work has been made available online in accordance with the publisher’s policies. This is the author created accepted version manuscript following peer review and as such may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1016/j.jpowsour.2018.09.073
Accepted author manuscript, 2.8 MBLicence: CC BY-NC-ND
Sup Info_RevisedAccepted author manuscript, 3.88 MBLicence: CC BY-NC-ND

Cite this

@article{ec6b273f2e97420cb1164ef223b9d962,

title = "Improved electrochemical performance of LiCoPO4 using eco-friendly aqueous binders",

abstract = "The electrochemical performance of LiCoPO4 (LCP) as a high-voltage positive electrode for lithium-ion batteries is significantly improved by using the aqueous binder sodium carboxymethyl cellulose (CMC). The CMC not only provides a uniform electrode surface as shown by scanning electron microscopy and elemental mapping, but also suppresses the degradation of LiCoPO4 by scavenging HF in the electrolyte solution as demonstrated by FT-IR. In comparison with other water-soluble binders such as sodium alginate (ALG) and polyacrylic acid sodium salt (PAA), the homogeneous distribution of CMC within the electrodes accompanied by high accessibility of carboxylate groups in CMC are shown to be crucial factors to achieve enhanced performance with an excellent capacity retention of 94% after 20 cycles at a rate of C/10.",

keywords = "Lithium ion batteries, High-voltage positive electrode materials, Aqueous binders, LiCoPO4",

author = "Kim, {Eun Jeong} and Xiangling Yue and Irvine, {John T. S.} and Armstrong, {A. Robert}",

note = "EJK would like to thank the Alistore ERI for the award of a studentship. The authors thank EPSRC Capital for Great Technologies Grant EP/L017008/1.",

year = "2018",

month = nov,

day = "1",

doi = "10.1016/j.jpowsour.2018.09.073",

language = "English",

volume = "403",

pages = "11--19",

journal = "Journal of Power Sources",

issn = "0378-7753",

publisher = "Elsevier Science BV",

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TY - JOUR

T1 - Improved electrochemical performance of LiCoPO4 using eco-friendly aqueous binders

AU - Kim, Eun Jeong

AU - Yue, Xiangling

AU - Irvine, John T. S.

AU - Armstrong, A. Robert

N1 - EJK would like to thank the Alistore ERI for the award of a studentship. The authors thank EPSRC Capital for Great Technologies Grant EP/L017008/1.

PY - 2018/11/1

Y1 - 2018/11/1

N2 - The electrochemical performance of LiCoPO4 (LCP) as a high-voltage positive electrode for lithium-ion batteries is significantly improved by using the aqueous binder sodium carboxymethyl cellulose (CMC). The CMC not only provides a uniform electrode surface as shown by scanning electron microscopy and elemental mapping, but also suppresses the degradation of LiCoPO4 by scavenging HF in the electrolyte solution as demonstrated by FT-IR. In comparison with other water-soluble binders such as sodium alginate (ALG) and polyacrylic acid sodium salt (PAA), the homogeneous distribution of CMC within the electrodes accompanied by high accessibility of carboxylate groups in CMC are shown to be crucial factors to achieve enhanced performance with an excellent capacity retention of 94% after 20 cycles at a rate of C/10.

AB - The electrochemical performance of LiCoPO4 (LCP) as a high-voltage positive electrode for lithium-ion batteries is significantly improved by using the aqueous binder sodium carboxymethyl cellulose (CMC). The CMC not only provides a uniform electrode surface as shown by scanning electron microscopy and elemental mapping, but also suppresses the degradation of LiCoPO4 by scavenging HF in the electrolyte solution as demonstrated by FT-IR. In comparison with other water-soluble binders such as sodium alginate (ALG) and polyacrylic acid sodium salt (PAA), the homogeneous distribution of CMC within the electrodes accompanied by high accessibility of carboxylate groups in CMC are shown to be crucial factors to achieve enhanced performance with an excellent capacity retention of 94% after 20 cycles at a rate of C/10.

KW - Lithium ion batteries

KW - High-voltage positive electrode materials

KW - Aqueous binders

KW - LiCoPO4

UR - https://www.sciencedirect.com/science/article/pii/S0378775318310528#appsec1

U2 - 10.1016/j.jpowsour.2018.09.073

DO - 10.1016/j.jpowsour.2018.09.073

M3 - Article

SN - 0378-7753

VL - 403

SP - 11

EP - 19

JO - Journal of Power Sources

JF - Journal of Power Sources

ER -

Improved electrochemical performance of LiCoPO₄ using eco-friendly aqueous binders

Abstract

Keywords

UN SDGs

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Equipment Account: Characterisation and Manipulation of Advanced Functional Materials and their Interfaces at the Nanoscale

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Improved electrochemical performance of LiCoPO4 using eco-friendly aqueous binders

Abstract

Keywords

UN SDGs

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Projects

Equipment Account: Characterisation and Manipulation of Advanced Functional Materials and their Interfaces at the Nanoscale

Cite this

Improved electrochemical performance of LiCoPO₄ using eco-friendly aqueous binders