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电化学(中英文) ›› 2000, Vol. 6 ›› Issue (1): 57-64. 

• 研究论文 • 上一篇    下一篇

MCFC隔膜用γ-LiAlO_2 粗细匹配料制备研究

林化新,衣宝廉,孔连英,张恩浚,周利,王凤霞   

  1. 中科院大连化学物理研究所三室!辽宁大连116023,中科院大连化学物理研究所三室!辽宁大连116023,中科院大连化学物理研究所三室!辽宁大连116023,中科院大连化学物理研究所三室!辽宁大连116023,中科院大连化学物理研究所三室!辽宁大连116023,中科院大连化学物理研究所三室!辽宁大
  • 收稿日期:2000-02-28 修回日期:2000-02-28 出版日期:2000-02-28 发布日期:2000-02-28

Study on Preparation of Coarse and Fine γ-LiAlO_2 Mixed Powder Used for MCFC Matrix

LIN Hua_xin , YI Bao_lian, KONG Lian_ying, ZHANG En_jun,ZHOU Li, WANG Feng_xia   

  1. (Dalian Institute of Chemical Physics,Chinese Academy of Sciences Dalian 116023,China
  • Received:2000-02-28 Revised:2000-02-28 Published:2000-02-28 Online:2000-02-28

摘要: 用高温反应法制得γ_LiAlO2 粗料 .另用氯化物法先制得α_LiAlO2 细料 ,此细料在 90 0℃焙烧几小时 ,它首先转化为中间过渡型 (无定型 ) ,进而再转化为γ_LiAlO2 超细料 .其粒度 <0 .18μm ,BET比表面积 >43m2 /g .用带铸法把以上γ_LiAlO2 粗细匹配料制得MCFC隔膜 .用此膜组装的电池性能较高 ,在 2 0 0和 30 0mA/cm2 放电时 ,电池输出电压分别为 0 .85V和 0 .75V时 ,功率密度高达 2 5 0mW /cm2 等 .用匹配料制得膜性能明显优于用单一粗料制得的膜 .粗细料制备工艺过程和匹配是成功的 .

关键词: 氯化物法, γ-LiAlO_2, 隔膜, MCFC性能

Abstract: Coarse α_LiALO 2 powder was transferred completely to γ_LiAlO 2 at 900 ℃ for ten hours.Fine γ_LiAlO 2 powder was prepared by “chloride” synthesis. MCFC matrix was fabricated by mixing the coarse and fine γ_LiAlO 2 powder and by tape cast.The out'put voltage of the cell assembled with the matrix was 0.85 and 0.75 V respectively at 200 and 300 mA/cm 2,and power density was about 250 mW/cm 2.The performance of the matrix fabricated with the mixed powder was obviously more advanced than that of the matrix fabricated with only coarse γ_LiAlO 2 powder.

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