Electrochemical Properties of Porous LiAl_XMn_2-XO₄ Powders Prepared by Immersion of Li and Al Nitrate Solution to Spherical Mn₂O₃ Powders

Abstract:

Spherical porous Mn2O3 powders were prepared by spray pyrolysis. Li and Al nitrate solution were immersed to porous Mn2O3 powders to obtain LiAlXMn2-XO4. Homogeneous LiAlXMn2-XO4 powders were formed by the calcination at 800°C. SEM observation showed that they had spherical morphology with particle size of about 1m. XRD revealed that the spinel phase was obtained by heating at 800°C. LiAlXMn2-XO4 cathode obtained by this method exhibited higher rechargeable capacity and cycle stability than that obtained by spray pyrolysis. The doping of Al ion was effective for the cycle stability at elevated temperature.

• Periodical: Key Engineering Materials (Volumes 421-422)
• Pages: 467-470
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.421-422.467
• Online since: December 2009
• Authors: Kazunori Nishiwaki, Takashi Ogihara, Shigeru Motohira, Takayuki Kodera
• Keywords: Aerosol, Lithium-Ion Battery, Powder, Spinel, Spray Pyrolysis

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