熔融碳酸盐燃料电池LiCoO_2涂覆阴极的微观结构和性能

Sol-gel LiCoO_2 Coated Cathode for Molten Carbonate Fuel Cells

采用溶胶-凝胶技术,制备了LiCoO2涂覆的熔融碳酸盐燃料电池NiO阴极．研究了 LiCoO2涂覆阴极的微观组织和在Li2CO3-K2CO3熔融碳酸盐中的溶解特性,并对其电化学性能进行了测试．结果表明LiCoO2涂层有效地降低了NiO在Li2CO3-K2CO3熔盐电解质中的溶解度和溶解速率,对单电池的性能有所改善,并在一定程度上抑制了Ni在电解质基板中的沉淀.

Sol-gel technique was employed to apply LiCoO2 coating to the state-of-the-art cathode of molten carbonate fuel cells. The effect of LiCoO2 coating on the NiO dissolution in eutectic Li2CO3-K2CO3 molten carbonate, single cell performance and the Ni precipitation in electrolyte matrix was investigated. The results show that LiCoO2 coating can effectively reduce the solubility and dissolving ratio of NiO in Li2O3-K2CO3 molten salt, enhance the performance of the single cell, and inhibit Ni precipitation in the electrolyte matrix to certain extent.