Acta Phys. -Chim. Sin. ›› 2008, Vol. 24 ›› Issue (09): 1563-1567.doi: 10.3866/PKU.WHXB20080906

• ARTICLE • Previous Articles     Next Articles

Electrochemical Performance of LiMn2O4 Thin Film Electrode Fabricated by Ink-Jet Printing Technique

HUANG Jun-Jie; JIANG Zhi-Yu   

  1. Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, Shanghai 200433, P. R. China
  • Received:2008-01-30 Revised:2008-05-09 Published:2008-09-10
  • Contact: JIANG Zhi-Yu

Abstract: Under ultrasonic andusingthe additive LomarDas dispersant, the printing“ink”can be prepared with LiMn2O4, which was synthesized through a sol-gel method. Through an ink-jet printing process, thin film LiMn2O4 electrode with thickness of about 1.8 μm was fabricated successfully. XRD, TG-DTA, SEM, electrochemical impedance spectrum, CV, and charge/discharge tests were used to characterize the LiMn2O4 nano particles and LiMn2O4 thin film electrode. It was found that LiMn2O4 filmelectrode could be charge-discharged at relative high current rate and kept stable. At the current density of 100 μA·cm-2 (2C), the thin film LiMn2O4 electrode had an initial capacity of 109 mAh·g-1, after 54 cycles the discharge capacity remained 97.4%, as a value of 105 mAh·g-1. This good electrochemical behavior of LiMn2O4 thin filmelectrode was mainly due to the thin thickness of electrode and well-crystallized LiMn2O4 nano particles.

Key words: LiMn2O4 nano-particle, Ink-jet printing technique, Thin filmelectrode, Lithiumion battery