Surface phonons of lithium ion battery active materials

Peter Benedek, Nuri Yazdani, Hungru Chen, Nils Wenzler, Fanni Juranyi, Martin Månsson, M. Saiful Islam, Vanessa C. Wood

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Surfaces of active materials are understood to play an important role in the performance and lifetime of lithium-ion batteries, but they remain poorly characterized and therefore cannot yet be systematically designed. Here, we combine inelastic neutron scattering and ab initio simulations to demonstrate that the structure of the surface of active materials differs from the interior of the particle. We use LiFePO 4 (LFP) as a model system, and we find that carbon coating influences the Li-O bonding on the (010) LFP surface relative to the bulk. Our results highlight how coatings can be used to systematically engineer the vibrations of atoms at the surface of battery active materials, and thereby impact lithium ion transport, charge transfer, and surface reactivity.

Original languageEnglish
Pages (from-to)508-513
Number of pages6
JournalSustainable Energy and Fuels
Volume3
Issue number2
Early online date7 Jan 2019
DOIs
Publication statusPublished - 1 Feb 2019

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Fuel Technology
  • Renewable Energy, Sustainability and the Environment

Cite this

Benedek, P., Yazdani, N., Chen, H., Wenzler, N., Juranyi, F., Månsson, M., Islam, M. S., & Wood, V. C. (2019). Surface phonons of lithium ion battery active materials. Sustainable Energy and Fuels, 3(2), 508-513. https://doi.org/10.1039/c8se00389k