铋离子掺杂层状双钙钛矿阴极材料及其制备方法

• Format: Patent
• Language: Chinese
• Published: 07.05.2024
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

本发明属于固体氧化物燃料电池领域，具体涉及一种A位掺杂Bi改性的层状双钙钛矿材料及其制备方法。一种材料结构式为Ln1-xBixBaCo2O5+δ,δ为使化学式的化合物保持电中性的值。该材料是采用甘氨酸硝酸盐法制备的，工艺简单,且不需要昂贵的实验仪器。本发明获得的材料在具有优异的氧交换能力以及催化活性，减小烧结温度，优越的稳定性等特点，能够获得高电化学性能,长时间运行稳定的固体氧化物燃料电池材料,有利于降低电池成本。 The invention belongs to the field of solid oxide fuel cells, and particularly relates to an A-site Bi-doped modified layered double perovskite material and a preparation method thereof. The structural formula of one material is Ln1-xBixBaCo2O5 + delta, wherein delta is a value enabling the compound of the chemical formula to maintain electric neutrality. The material is prepared by adopting a glycine nitrate method, the process is simple, and expensive experimental instruments are not needed. The material obtained by the invention has the characteristics of excellent oxygen exchange capacity and catalytic activity, sintering temperature reduction, excellent stability and the like, can obtain a solid oxide fuel cell material with high electrochemical performance and stable long-time operation, and is be