水基电解质隔膜流延法制备与性能研究  

Preparation and properties of water-based electrolyte diaphragm by tape casting

作　　者：杨冠军 张瑞云[1,2] 卢成壮 王鹏杰 王金意[1] 黄华[1] 王菊 YANG Guanjun;ZHANG Ruiyun;LU Chengzhuang;WANG Pengjie;WANG Jinyi;HUANG Hua;WANG Ju(China Huaneng Clean Energy Research Institute Co.,Ltd.,Beijing 102209,China;Department of Energy and Power Engineering,Tsinghua University,Beijing 100084,China)

机构地区：[1]中国华能集团清洁能源技术研究院有限公司,北京102209 [2]清华大学能源与动力工程系,北京100084

出　　处：《热力发电》2022年第11期115-120,共6页Thermal Power Generation

基　　金：华能国际电力股份有限公司科技项目(HNKJ20-H59)。

摘　　要：因为水基电解质隔膜流延法制备具有高效、低成本、低污染等优点,故提出了一种以流延机制备电解质隔膜工艺过程,主要针对以α-LiAlO_(2)为粉料,蒸馏水和聚乙烯醇(PVA)的混合溶液为黏结剂,通过流延机流延制备大面积高强度环保型的水基电解质隔膜,并对隔膜和电池性能进行了测试。结果表明:所制备水基隔膜平均孔径为0.217μm,孔隙率为61.63%,通过组装1.5kW电堆进行实验验证,0.7V恒电压下放电最大功率在1.718kW,比设定值1.5kW超过13%,功率稳定输出在1.5kW运行超过了900h。该研究为后期大功率熔融碳酸盐燃料电池研发奠定基础。The preparation of water-based electrolyte diaphragm by tape casting method has the characteristics of high efficiency,low cost and low pollution.A process of preparing electrolyte diaphragm by tape casting mechanism was proposed,which used α-Li AlO_(2) as powder and the mixed solution of distilled water and polyvinyl alcohol(PVA) as binder.A large-area,high-strength and environment-friendly water-based electrolyte diaphragm was prepared by tape casting in a tape casting machine.Moreover,the performances of the diaphragm and fuel cell were tested.The results showed that,the average pore diameter of the prepared water-based diaphragm was 0.217 μm,and the porosity was 61.63%.Through assembling a 1.5 kW stack,it was experimentally verified that the maximum discharge power at constant voltage(0.7 V) was 1.718 kW,which was 13% higher than the set value(1.5 kW).The power output was stable at 1.5 kW for more than 900 hours.The research laied the foundation for later researches and developments of high-power molten carbonate fuel cell.

关 键 词：熔融碳酸盐燃料电池 水基隔膜 流延制备 特性分析 电池堆 

分 类 号：TK91[动力工程及工程热物理]