甘氨酸-硝酸盐法合成GdBaCo 2 O 5+ δ 阴极材料及其性能
Source abstract
Abstract
采用甘氨酸-硝酸盐法(GNP)制备中温固体氧化物燃料电池(IT-SOFC)GdBaCo 2 O 5+ δ (GBCO)阴极材料, 探索甘氨酸与金属阳离子摩尔比( G/M )等合成条件对产物性能的影响, 研究了GBCO的微观形貌、晶体结构、电导率和电化学性能. 结果表明, G/M 为3.0的阴极粉料(GBCO-3.0)颗粒细小均匀且比表面积大, G/M 在2.5~3.5之间制备的粉料经1000℃煅烧5 h可形成结晶度高的GBCO纯相. 阴极材料GBCO与电解质材料Sm 0.2 Ce 0.8 O 1.9 (SDC)在1100℃混合煅烧, 未发生明显的化学反应. 在500~800℃范围内, GBCO阴极的电导率均大于100 S/cm. 1050℃煅烧的GBCO-3.0阴极的极化电阻( R p )最小, 750℃为0.125 Ω·cm 2 .
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advancements in Solid Oxide Fuel Cells · Electronic and Structural Properties of Oxides · Gas Sensing Nanomaterials and Sensors
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