J Mater Sci Technol ›› 1993, Vol. 9 ›› Issue (3): 157-160.

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Synthesis of CDMO from LiOH and EMD and the Performances of Li/CDMO Rechargeable Batteries

Renmin LIU Guoliang WU Jiangshan LUO General Research Institute of Nonferrous Metals,Beijing,100088,ChinaJohn H.Kennedy Zhengming ZHANG Department of Chemistry,University of California,Santa Barbara,USAQin LIN University of Science and Technology Beijing,   

  • Received:1993-05-28 Revised:1993-05-28 Online:1993-05-28 Published:2009-10-10

Abstract: The synthesis of CDMO from LiOH and EMD has been investigated by thermogravimetry and pow- der X-ray diffraction analysis.The results showed that it took place from below 100 to 400℃.When the proportion of Li:Mn in the starting mixture was 3:7,the measured weight loss during this process was 7.40% for heat-treated EMD and 8.33% for non-heat-treated EMD.Based on these data and X-ray diffraction results the obtained product would be 3LiMn204 - MnO2.This material was es- sentially amorphous.It can insert 4.7 Li per 3LiMn_2O_4·MnO_2,leading to a capacity of 170- 200 mAh/g and demonstrated reasonable discharge and recharge cycle performance for both test cells and practical batteries.

Key words: CDMO, lithium rechargeable battery