Synthesis of nanocrystalline LiCdxMn2-xO4 cathode materials by using a new combustion fuel for Li-ion polymer battery

摘要

Spinel LiMn2O4 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 LiMn2O4 , Cd-doped LiMn2O4 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 x Mn2-xO4 powders. The structural phase identification and grain size of the synthesized LiCdxMn2-xO4 products were characterized by X-ray diffraction studies and SEM analysis, respectively. Electrochemical discharge characteristics were performed by fabricating a button cell in the configuration of carbon/polymer electrolyte/LiCdxMn2-xO4.