Characteristics of NMC811 after Surface Modification Using Rice Husk Derived Silica Coating

Fiona Angellinnov, Achmad Subhan, Tribidasari Anggraningrum Ivandini, Afriyanti Sumboja, Bambang Priyono, Qingyu Yan, Anne Zulfia Syahrial*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

High nickel content in nickel manganese cobalt (NMC811, LiNi0.8Mn0.1Co0.1O2) resulted in high capacity but low structural stability. Surface modification of NMC811 via silica (SiO2) coating is known to counter this problem, leading to better electrochemical performance. In this work, silica was synthesized from rice husk through sol-gel method with alkaline extraction followed by acidification process. The resulting silica was coated onto commercially available NMC811 to modify its surface via solid-state reaction method. The characterization results showed that the silica coated NMC811 demonstrated a higher conductivity and lithium diffusion coefficient of 2.85 x 10-5 S/cm and 2.52 x 10-14 cm2/s, respectively, compared to that of bare NMC811 (8.17x10-6 S/cm and 1.75 x 10-15 cm2/s, respectively). This result confirms that the silica derived from rice husk can be used as a potential low-cost material to modify the surface and thus to increase the electrochemical performance of commercial NMC811.

Original languageEnglish
Title of host publicationSolid State Phenomena
PublisherTrans Tech Publications Ltd
Pages101-106
Number of pages6
DOIs
Publication statusPublished - 2025
Externally publishedYes

Publication series

NameSolid State Phenomena
Volume369
ISSN (Print)1012-0394
ISSN (Electronic)1662-9779

Bibliographical note

Publisher Copyright:
© 2025 Trans Tech Publications Ltd, All Rights Reserved.

ASJC Scopus Subject Areas

  • Atomic and Molecular Physics, and Optics
  • General Materials Science
  • Condensed Matter Physics

Keywords

  • Biomass
  • cathode material
  • NMC811
  • rice husk
  • silica coating

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