Synthesis of Nanocrystalline LiCd_xMn_2-xO_4 Cathode Materials by Using a New Combustion Fuel for Li-ion Polymer Battery

摘要

Spinel LiMn_2O_4 possesses several advantages such as high voltage, wide operating temperature and long self-life with much lower cost. However it suffers from loss of capacity during cycling. To improve the cycle performance of spinel LiMn_2O_4, Cd-doped LiMn_2O_4 powders were synthesized by combustion route using gelatine as a new combustion fuel that acts as an excellent fuel as well as a very good dispersing agent to obtain nanocrystalline LiCd_xMn_2-xO_4 powders. The structural phase identification and grain size of the synthesized LiCd_xMn_2-xO_4 products were characterized by X-ray diffraction studies and SEM analysis, respectively. Electrochemical discharge characteistics were performed by fabricating a button cell in the configuration of carbon/polymer electrolyte/LiCd_xMn_2-xO_4.