Porous Metal-Organic Frameworks for Enhanced Performance Silicon Anodes in Lithium-Ion Batteries

Romeo Malik, Melanie J. Loveridge, Luke J. Williams, Qianye Huang, Geoff West, Paul R. Shearing, Rohit Bhagat, Richard I. Walton

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4 Citations (Scopus)

Abstract

Maintaining the physical integrity of electrode microstructures in Li-ion batteries is critical to significantly extend their cycle life. This is especially important for high-capacity anode materials such as silicon, whose operational volume expansion exerts huge internal stress within the anode, resulting in electrode destruction and capacity fade. In this study, we demonstrate that by incorporating metal-organic frameworks (MOFs) with carboxylate organic linkers into Si-based anodes, a stable and flexible pore network is generated to maximize and maintain Li-ion flux throughout the electrode's architecture. We show that the zirconium carboxylate MOF UiO-67 is a versatile comaterial to boost performance and mitigate the rate of anode degradation that presently limits the lifetime of Si anodes. The cage-like pores in UiO-67 and flexural properties of the 4,4′-biphenyldicarboxylate organic linker are proposed to create robust "ionophores" in the anode film to enhance longer term durability and performance.

Original languageEnglish
Pages (from-to)4156-4165
Number of pages10
JournalChemistry of Materials
Volume31
Issue number11
Early online date15 May 2019
DOIs
Publication statusPublished - 11 Jun 2019
Externally publishedYes

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ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

Cite this

Malik, R., Loveridge, M. J., Williams, L. J., Huang, Q., West, G., Shearing, P. R., ... Walton, R. I. (2019). Porous Metal-Organic Frameworks for Enhanced Performance Silicon Anodes in Lithium-Ion Batteries. Chemistry of Materials, 31(11), 4156-4165. https://doi.org/10.1021/acs.chemmater.9b00933