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Co and Ni niobateNiobate compounds have attracted significant research interest for their suitability in lithiumLithium-ion batteryBattery applications. Complicated and costly synthesis methods hinder the successful commercialization of many niobateNiobate material applications. Therefore, simpler and more economical synthesis methods are needed for large-scale applications. This study investigates the precipitationPrecipitation of Ni and Co niobateNiobate precursors from aqueous solution, using different sources of niobium (ammonium niobateNiobate oxalate and niobium pentoxide) and other metalsMetals (inorganic salts) at varying pH. These precursors are characterized, and the relationship between their properties and the characteristics of the products after calcination is presented, as the crystallinity of the niobateNiobate depends on the temperature and calcination time. Characterization techniques for chemical assay (XRF), phase identification (XRD, Raman spectroscopy), and size and morphology (TEM) are employed for the precursors and niobatesNiobate, while ICP-OES and TOC techniques are used for the characterization of the solutions.

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Precipitation and Calcination of Co and Ni Niobates: A Path to Scalable Lithium-Ion Battery Materials

  • 会议论文

  • 发表日期：

    2025年

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  • Gabriela Cordeiro Silva,
  • Bruno Vinícius Diniz Leblon,
  • Gabriel Túlio Mendes de Alvarenga,
  • Liliani Pacheco Tavares Nazareth,
  • André Luiz Alvarenga Santos,
  • James Vaughan,
  • Sônia Denise Ferreira Rocha

摘要

Co and Ni niobateNiobate compounds have attracted significant research interest for their suitability in lithiumLithium-ion batteryBattery applications. Complicated and costly synthesis methods hinder the successful commercialization of many niobateNiobate material applications. Therefore, simpler and more economical synthesis methods are needed for large-scale applications. This study investigates the precipitationPrecipitation of Ni and Co niobateNiobate precursors from aqueous solution, using different sources of niobium (ammonium niobateNiobate oxalate and niobium pentoxide) and other metalsMetals (inorganic salts) at varying pH. These precursors are characterized, and the relationship between their properties and the characteristics of the products after calcination is presented, as the crystallinity of the niobateNiobate depends on the temperature and calcination time. Characterization techniques for chemical assay (XRF), phase identification (XRD, Raman spectroscopy), and size and morphology (TEM) are employed for the precursors and niobatesNiobate, while ICP-OES and TOC techniques are used for the characterization of the solutions.