Green Synthesis of Layered Li1.2Ni0.20Co0.52Mn0.08O2 Cathode Materials Using Supercritical CO2

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Yalçın A., Demir M., Gönen M., Akgün M.

3. International Conference on Life and Engineering Sciences (ICOLES 2020), İstanbul, Türkiye, 11 - 13 Aralık 2020, ss.1-9

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Basıldığı Şehir: İstanbul
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.1-9
  • Yıldız Teknik Üniversitesi Adresli: Evet

Özet

Li-rich NiMnCo (NMC)-based materials are used as cathode material due to the high energy density and high voltage in lithium-ion batteries. One significant challenge is nested in adjusting their synthesis conditions to reach optimum electrochemical performance and using green and low-cost synthesis protocol. In study, Li1.2Ni0.20Co0.52Mn0.08O2 cathode material was synthesized by using supercritical CO2 at low temperature (700°C) and low times (4h). Based on XRD, the synthesized sample has high purity and crystalline structure. The particle size of synthesized sample at low temperature is not uniform and an average size varies between 1 and 5 micron. Conversely, the particle size of sample calcined at 900 °C is smaller than those of sample calcined at 700 °C. The chemical structure of calcined sample was provided to be Li1.2Ni0.20Co0.52Mn0.08O2 by EDS and ICP/OES. This work opens up a new avenue for preparation of Li-rich NMC electrode materials via low-cost, simple and green approach.