MCFC的电解质基板制备及其影响因素

PREPARATION OF ELETROLYTE BASE-PLATE FOR MCFC AND AFFECTING FACTORS THEROF

介绍了熔融碳酸盐燃料电池(MCFC)的电解质基板新制备方法。利用高分散性的勃姆石和LiOH制备亚微米级的γ-LiAlO2粉末,用制备的γ-LiAlO2粉末和水溶性粘结剂羧甲基纤维素钠(CMC)等制备MCFC的电解质基板,并将制备的基板配合电极、电解质盐片组装为MCFC单电池,该电池最大电压可达到1.0V以上,最大放电电流可达到10A。分析了基板的孔径及孔隙率、γ-LiAlO2粉末粒径、基板浆料粘结剂和溶剂、浆料流延过程的环境条件对基板性能的影响,结果表明该方法制备的基板性能良好,能够满足MCFC的使用要求。

A new preparation method for electrolyte base-plate used for molten carbonate fuel cells（MCFC） has been presented.By using a highly dispersed Boehmite stone and LiOH,the submicrometric γ-LiAlO2 powder used for preparation of electrolyte base-plate is prepared.By adopting the prepared LiAlO2 power and a water-soluble binder,i.e.caboxy methyl cellulose（CMC）,ect.,the electrolyte base-plate used for manufacturing MCFC is prepared.The single cell of MCFC is assembled by fitting said base-plate with electrode and electrolyte salt trips,the maximum voltage of single cell reaches above 1.0 V,the maximum discharged current reaching 10 A.The aperture and porosity on the base-plate,the particle size of γ-LiAlO2 powder,and the influence of environment condition in flowing process of slurry upon the performance of base-plate have been analysed.Results show that the performance of base-plate prepared by using above-mentioned method is good,satisfying the requirements in application of MCFC.