Skip to content

Research at St Andrews

Atomic layer fluorination of 5 V class positive electrode material LiCoPO4 for enhanced electrochemical performance

Research output: Contribution to journalArticle

DOI

Open Access Status

  • Embargoed (until 23/06/21)

Author(s)

Sanghoon Kim, Eun Jeong Kim, Youn Charles-Blin, Katia Guérin, Marc Dubois, Delphine Flahaut, Herve Martinez, Michaël Deschamps, David Noel Miller, John T. S. Irvine, Robert Armstrong, Laure Monconduit, Nicolas Louvain

School/Research organisations

Abstract

The surface fluorination of lithium cobalt phosphate (LiCoPO4, LCP) using a one‐step, room temperature processable, easily up‐scalable and dry surface modification method with XeF2 as fluorine source was developed. After fluorination, fluorine‐rich nanoparticles were observed mainly on the particle surface, which facilitates the improvement of surface stability and electrochemical performance such as cycling stability and rate capability, as the fluorinated LCP can be protected against side reactions with electrolyte or by‐products of electrolyte decomposition at high voltage (5 V). More importantly, the direct surface fluorination proved more efficient than adding a fluorinated electrolyte additive (i. e., FEC). These results suggest that surface fluorination using XeF2 is of great promise for practical applications of high voltage positive materials for lithium‐ion batteries.
Close

Details

Original languageEnglish
JournalBatteries and Supercaps
VolumeEarly View
Early online date23 Jun 2020
DOIs
Publication statusE-pub ahead of print - 23 Jun 2020

    Research areas

  • LCP, Fluorination, X-ray photoelectron spectroscopy, Lithium-ion battery

Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by author

  1. Oxygen redox activity through a reductive coupling mechanism in the P3-type nickel-doped sodium manganese oxide

    Kim, E. J., Ma, L. A., Duda, L. C., Pickup, D. M., Chadwick, A. V., Younesi, R., Irvine, J. T. S. & Armstrong, R., 6 Jan 2020, In : ACS Applied Energy Materials. Early View

    Research output: Contribution to journalArticle

  2. Enhanced cycling performance of magnesium doped lithium cobalt phosphate

    Kim, E. J., Miller, D., Irvine, J. T. S. & Armstrong, A. R., 26 Sep 2019, In : ChemElectroChem. 6, 18

    Research output: Contribution to journalArticle

  3. Improved electrochemical performance of LiCoPO4 using eco-friendly aqueous binders

    Kim, E. J., Yue, X., Irvine, J. T. S. & Armstrong, A. R., 1 Nov 2018, In : Journal of Power Sources. 403, p. 11-19 9 p.

    Research output: Contribution to journalArticle

  4. Photocatalytic removal of the cyanobacterium Microcystis aeruginosa PCC7813 and four microcystins by TiO2 coated porous glass beads with UV-LED irradiation

    Pestana, C. J., Portela Noronha, J., Hui, J., Edwards, C., Gunaratne, H. Q. N., Irvine, J. T. S., Robertson, P. K. J., Capelo-Neto, J. & Lawton, L. A., 22 Jul 2020, In : Science of the Total Environment. 745, 141154.

    Research output: Contribution to journalArticle

  5. A new high-performance proton-conducting electrolyte for next-generation solid oxide fuel cells

    Radenahmad, N., Afif, A., Abdalla, A. M., Saqib, M., Park, J-Y., Zaini, J., Irvine, J., Hyun Kim, J. & Azad, A. K., 24 Jul 2020, In : Energy Technology. Early View, 2000486.

    Research output: Contribution to journalArticle

ID: 268884810

Top