熔融碳酸盐燃料电池水溶性隔膜的制备和性能

电化学（中英文） ›› 2005, Vol. 11 ›› Issue (2): 146-151.

熔融碳酸盐燃料电池水溶性隔膜的制备和性能

林化新,程谟杰,衣宝廉

中国科学院大连化学物理研究所,中国科学院大连化学物理研究所,中国科学院大连化学物理研究所辽宁大连116023 ,辽宁大连116023 ,辽宁大连116023

收稿日期:2005-05-28 修回日期:2005-05-28 出版日期:2005-05-28 发布日期:2005-05-28

The Preparation and Performance of The Aqueous Matrix for Molten Carbonate Fuel Cells

LIN Hua-xin~

(*),CENG Mo-jie,YI Bao-lian(Dalian Institute of Chemical Physics, The Chinese Academy of Science, Dalian 116023, China

Received:2005-05-28 Revised:2005-05-28 Published:2005-05-28 Online:2005-05-28

摘要/Abstract

摘要： 用水溶性粘结剂聚乙烯醇(PVA)和α-LiAlO2粉料等制备熔融碳酸盐燃料电池水溶性隔膜(PVA隔膜).粉料的水合作用导致PVA隔膜的孔隙率和热失重均比PVB(聚乙烯醇缩丁醛)隔膜的大,但前者的最大孔径却比后者的小.当反应气压为0.9MPa,反应气体利用率为20%,分别于300和428.57mA·cm-2下放电时,PVA隔膜电池输出电压分别为0.849和0.739V;输出功率密度分别为254.7和316.7mW·cm-2,高于PVB隔膜电池的.经10次热循环启动,电池性能出现下降—回升—稳定的变化.这可能是PVA隔膜高温失水引起隔膜电导变化所致.

关键词: 熔融碳酸盐燃料电池, 隔膜, α-偏铝酸锂粉料, PVA

Abstract: PVA matrix of MCFC was prepared from the α-LiAlO_(2 )powder, and polyvinylalcohol(PVA), Compared with the conventional PVB matrix, higher porosity,higher thermal weight loss and smaller maximum pore diameter were achieved for PVA matrix. Single cell was assembled with PVA matrix. At reaction gas pressure of 0.9MPa, under reaction gas utilization of 20%, at 300 and 428.57mA·cm~(-2), the cell voltage was 0.849 and (0.739) V respectively, and the output power density was 254.7 and 316.7mW·cm~(-2 )respectively, which are higher than those of the cell assembled with PVB matrix. During thermal cycles, the cell performance shows a slightly decreasing-rising-stabilizing process, which might be due to the conductivity variation of PVA matrix resulted from the losing of hydrated water in it at high temperatures.

Key words: Molten carbonate fuel cell, Matrix, α-Lithium aluminate, Polyvinylalcohol(PVA)

中图分类号:

TM911.4

林化新,程谟杰,衣宝廉. 熔融碳酸盐燃料电池水溶性隔膜的制备和性能[J]. 电化学（中英文）, 2005, 11(2): 146-151.

LIN Hua-xin~. The Preparation and Performance of The Aqueous Matrix for Molten Carbonate Fuel Cells[J]. Journal of Electrochemistry, 2005, 11(2): 146-151.

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链接本文: https://electrochem.xmu.edu.cn/CN/

https://electrochem.xmu.edu.cn/CN/Y2005/V11/I2/146

参考文献

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