Acta Chimica Sinica ›› 2004, Vol. 62 ›› Issue (22): 2223-2227. Previous Articles     Next Articles

锂磷氧氮(LiPON)薄膜电解质和全固态薄膜锂电池研究

刘文元, 傅正文, 秦启宗   

  1. 复旦大学化学系激光化学研究所, 上海市分子催化和功能材料重点实验室, 上海, 200433
  • 投稿日期:2004-03-01 修回日期:2004-07-22 发布日期:2014-02-17
  • 通讯作者: 秦启宗,E-mail:qzqin@fudan.ac.cn;Tel:021-65102777;Fax:021-65102777 E-mail:qzqin@fudan.ac.cn
  • 基金资助:
    国家自然科学基金(No.20203006)资助项目.

Studies on Lithium Phosphorous Oxynitride Electrolyte Thin Films and a New All-solid-state Thin Film Lithium Battery

LIU Wen-Yuan, FU Zheng-Wen, QIN Qi-Zong   

  1. Laser Chemistry Institute & Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University, Shanghai, 200433
  • Received:2004-03-01 Revised:2004-07-22 Published:2014-02-17

Lithium phosphorous oxynitride (LiPON) electrolyte thin films have been fabricated by nitrogen plasma-assisted deposition coupled with electron-beam reactive evaporated Li3PO4 for the first time. This electrolyte thin film, deposited at the nitrogen plasma reactor power of 350 W, was found to be amorphous with the ionic conduction of 6.0×10-7 S/cm at 300 K and an electrochemical stable window of 5.0 V. By using the LiPON thin film, a new all-solid-state thin film lithium battery of Li/LiPON/Ag0.5V2O5 has been successfully prepared. The cathode thin film of Ag0.5V2O5 was fabricated using pulsed laser deposition (PLD), and the metallic lithium anode thin film was prepared via vacuum thermal evaporation. For Li/LiPON/Ag0.5V2O5 battery, the open circuit voltage was 3.0 V and the first discharge capacity was 62 μAh·cm-2·μm-1 at a current density of 14 μA/cm2. After the 10th cycle, the capacity fading was limited to about 0.2% per cycle and this battery could be cycled more than 550 cycles.

Key words: thin film, e-beam evaporation, LiPON, solid electrolyte, lithium battery