Effect of Sr substitution on structure and electrochemical properties of perovskite-type LaMn0.9Ni0.1O3 nanofibers
Effect of Sr substitution on structure and electrochemical properties of perovskite-type LaMn0.9Ni0.1O3 nanofibers
复制标题
Sr取代对钙钛矿型LaMn0.9Ni0.1O3纳米纤维结构和电化学性能的影响
DOI：
10.1016/j.matlet.2019.05.090
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发表时间：
2019-10-01
影响因子：
3
通讯作者：
Jiang, Guo Hua
中科院分区：
文献类型：
--
作者：
Ma, Pian Pian;Zhu, Bin;Jiang, Guo Hua
钙钛矿型镧系氧化物是一种很有前途的新型超级电容器电极材料。本研究采用静电纺丝法制备了不同Sr取代量的La_（1-x）Sr_xMn_（0.9）Ni_（0.1）O_3纳米纤维，并首次将其用作电极材料。研究了Sr取代对LaMn_（0.9）Ni_（0.1）O_3钙钛矿结构的影响，并对其电化学性能进行了相应的调整。微量Sr的掺杂使钙钛矿结构中引入了氧空位，从而优化了材料的比容量。然而，过量的Sr取代会导致钙钛矿结构的晶格畸变，并反而使电化学性能劣化。在La_（0.85）Sr_（0.15）Mn_（0.9）Ni_（0.1）O_3组份中获得了最高的比电容113.9 F.g（-1）。(C)2019爱思唯尔B. V.保留所有权利。
Perovskite-type lanthanide oxide is a new kind of promising electrode material for supercapacitor. In this study, La1-xSrxMn0.9Ni0.1O3 nanofibers with different Sr substitutions are prepared by electrospun method and used as electrode material firstly. The effect of Sr substitution on the structure of LaMn0.9Ni0.1O3 perovskite has been investigated, and the electrochemical properties have been tailored correspondingly. Minor Sr substitution introduces some oxygen vacancies into the perovskite structure, and optimizes the specific capacitance. However, excessive Sr substitution causes lattice distortion of the perovskite structure and deteriorates the electrochemical performance instead. The highest specific capacitance of 113.9 F.g(-.1) is obtained in La0.85Sr0.15Mn0.9Ni0.1O3 component. (C) 2019 Elsevier B.V. All rights reserved.