Metal Carbide Additives in Graphite‐Silicon Composites for Lithium‐Ion Batteries

Abstract: The pathway for improving lithium‐ion batteries′ energy density strongly depends on finding materials with enhanced performance. Although great efforts have been done, on the anode‐side, graphite is still the best choice. In the last decade, silicon elements are attracting growing attention as anode since their use can theoretically increase specific capacity of the negative electrode side. However, as the electrochemical mechanism involves the alligation of a large amount of Li, the silicon electrode experiences huge volume changes (more than 300 % of its initial volume), leading to fractures and pulverizations of the electrode. Herein, we propose for the first time using Molybdenum and Chromium Carbides as additive to stabilize graphite/silicon composites. Spark plasma sintering technology is used to sinter the electrode powders. We demonstrated that the presence of molybdenum or chromium carbides promotes the performance of C/Si electrodes, improving the cycling stability compared to pristine graphite/silicon electrodes.

Location
Deutsche Nationalbibliothek Frankfurt am Main
Extent
Online-Ressource
Language
Englisch

Bibliographic citation
Metal Carbide Additives in Graphite‐Silicon Composites for Lithium‐Ion Batteries ; day:12 ; month:10 ; year:2023 ; extent:9
ChemElectroChem ; (12.10.2023) (gesamt 9)

Creator
Piñuela‐Noval, Juan
Fernández‐González, Daniel
Brutti, Sergio
Suárez, Marta
Mazzei, Franco
Navarra, Maria Assunta
Verdeja, Luis Felipe
Fernández, Adolfo
Agostini, Marco

DOI
10.1002/celc.202300339
URN
urn:nbn:de:101:1-2023101215301799896825
Rights
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Last update
14.08.2025, 10:44 AM CEST

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Associated

  • Piñuela‐Noval, Juan
  • Fernández‐González, Daniel
  • Brutti, Sergio
  • Suárez, Marta
  • Mazzei, Franco
  • Navarra, Maria Assunta
  • Verdeja, Luis Felipe
  • Fernández, Adolfo
  • Agostini, Marco

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