Acta Phys. -Chim. Sin. ›› 2007, Vol. 23 ›› Issue (Supp): 14-17.doi: 10.3866/PKU.WHXB2007Supp04

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Electrochemical Performances of LiMn2O4-based Electrode with Water-soluble Binder

WANG Ya-Dan; WANG Jian; MU Qi-Yong; LI Yong-Wei; QI Lu   

  1. CITIC Guoan Mengguli New Energy Technology Co. Ltd., Beijing 102200, P. R. China; New Energy Materials and Technology Laboratory, Department of Applied Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
  • Received:1900-01-01 Revised:1900-01-01 Published:2008-01-04
  • Contact: QI Lu

Abstract: The spinel LiMn2O4 was synthesized by high temperature solid-state reaction and its structure and morphology were analyzed by XRD and SEM. A 2.5 Ah cylindrical lithium-ion battery was developed using electrodes made with water-soluble polymer binder, and its electrochemical performance was tested as well. The results showed that the synthesized LiMn2O4 material has simple spinel phase. The cell with water-binder LiMn2O4 electrode showed excellent electrochemical performance. The cathode’s specific capacity reached 95.8 mAh·g-1 at 0.5C (1C=2.5A) rate and the average discharge voltage of the cell was 3.85 V at 1C rate. The cells also have good safety performances during overcharging.

Key words: Cathode with water-binder, LiMn2O4, Li-ion battery


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