Enhanced the Electrochemical Performance in Sr-doped LaCoO3 Nanofibers

IF 5.8 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Journal of Alloys and Compounds Pub Date : 2025-05-16 DOI:10.1016/j.jallcom.2025.181003

Xu Guo, Zixuan Tian, Jingchen Qu, Xin Ye, Lei Wang, Yamei Zhang, Songtao Dong, Hongbo Ju

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Abstract

In recent years, perovskite oxides have attracted extensive attention for their distinctive physical, chemical and electrical properties. In this study, La_1-xSr_xCoO₃ (x=0, 0.1, 0.15, 0.2) nanofibers were prepared via the electrospinning method. A systematic investigation was performed to verify the effects of Sr doping levels on the morphology, microstructure and electrochemical properties of LaCoO₃ nanofibers. The results demonstrate that La_1-xSr_xCoO₃ (x=0, 0.1, 0.15, 0.2) exhibits a robust hollow structure, with the average diameter decreasing initially followed by an increase as the Sr doping level rises. The electrochemical test results revealed that La_0.85Sr_0.15CoO₃ nanotubes exhibited a maximum specific capacitance of 265.5 F/g at a current density of 1 A·g^-1. These findings demonstrate the effectiveness of A-site Sr doping in enhancing the electrochemical properties of perovskite materials.

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增强了sr掺杂LaCoO3纳米纤维的电化学性能

近年来，钙钛矿氧化物以其独特的物理、化学和电学性能引起了广泛的关注。本研究采用静电纺丝法制备了La1-xSrxCoO3 （x= 0,0.1, 0.15, 0.2）纳米纤维。系统地研究了Sr掺杂水平对LaCoO3纳米纤维形貌、微观结构和电化学性能的影响。结果表明：La1-xSrxCoO3 （x= 0,0.1, 0.15, 0.2）呈现出坚固的空心结构，随着Sr掺杂量的增加，平均直径先减小后增大；电化学测试结果表明，在电流密度为1 a·g-1时，La0.85Sr0.15CoO3纳米管的最大比电容为265.5 F/g。这些发现证明了a位Sr掺杂在提高钙钛矿材料电化学性能方面的有效性。

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来源期刊

Journal of Alloys and Compounds 工程技术-材料科学：综合

CiteScore

11.10

自引率

14.50%

发文量

5146

审稿时长

67 days

期刊介绍： The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.