摘要
采用静电纺丝法制备了La1Q Sr04NiO4 Ag中空纳米纤维。利用XRD和SEM对材料物相及形貌进行分析。结果表明，800℃烧结2h形成平均直径为400nm的LaL6 Sr04NiO4 Ag复合空心纤维；850℃烧结1h，纤维交叉连接形成网格状结构，并与电解质紧密接触。EIS谱测试结果表明LaL6 Sr04NiO4 Ag纳米纤维电极在700℃空气气氛的极化电阻为0．32Ω·c㎡；氧分压测试结果显示，在600～700℃范围内，电极反应速率控制步骤均为电荷转移反应。
Lal.6Sr0.4NiO4-Ag hollow nanofibers are successfully prepared by electro-spinning technology. The phase and morphology of the materials are characterized by XRD and SEM. The results show that Lal.6Sro.4NiO4-Ag hollow nanofibers with an average diameter in 400 nm are obtained after sintering at 800 ℃ for 2 h. The Lal.6Sr0.4NiO4-Ag nanofiber forms mesh-like morphology and good contact with the electrolyte after sintering at 850 ℃for 1 h. The Electrochemical Impedance Spectroscopy （EIS） measurements show that the area specific resistance （ASR） of Lal.6Sro.4NiO4-Ag nanofiber cathode is 0.32 cm2 at 700 ℃ in air. The oxygen partial pressure measurement indicates that the rate limiting step of the nanofiber cathode is charge transfer process from 600 to 700 ℃.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2014年第5期1045-1050,共6页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金(No.51302069,51372073)
黑龙江省杰出青年科学基金(JC201211)
黑龙江省自然科学基金(B201107)资助项目
