Preparation and electrochemical performance of double perovskite La<sub>2</sub>CoMnO<sub>6</sub> nanofibers

Jie Fu; Heng-yan Zhao; Jie-run Wang; Yu Shen; Ming Liu

doi:10.1007/s12613-018-1644-1

Volume 25 Issue 8

Aug. 2018

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文章导航 > 矿物冶金与材料学报（英文） > 2018 > 25(8): 950-956

Jie Fu, Heng-yan Zhao, Jie-run Wang, Yu Shen, and Ming Liu, Preparation and electrochemical performance of double perovskite La₂CoMnO₆ nanofibers, Int. J. Miner. Metall. Mater., 25(2018), No. 8, pp. 950-956. https://doi.org/10.1007/s12613-018-1644-1

Cite this article as:

Jie Fu, Heng-yan Zhao, Jie-run Wang, Yu Shen, and Ming Liu, Preparation and electrochemical performance of double perovskite La2CoMnO6 nanofibers, Int. J. Miner. Metall. Mater., 25(2018), No. 8, pp. 950-956. https://doi.org/10.1007/s12613-018-1644-1

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研究论文

Preparation and electrochemical performance of double perovskite La₂CoMnO₆ nanofibers

College of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China

通讯作者:
Jie Fu E-mail: dicpfj@126.com

中文摘要

Through electrospinning, La₂CoMnO₆ nanofibers were prepared from a polyvinylpyrrolidone/lanthanum nitrate–cobalt acetate–manganese acetate (PVP/LCM) precursor and were used as electrode materials. The morphologies and structures of the samples were characterized by field-emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and Brunauer-Emmett-Teller (BET) specific surface area analysis. The results show that the prepared La₂CoMnO₆ nanofibers are stable, one-dimensional structures formed from interconnected La₂CoMnO₆ nanoparticles with a diamond-like crystal structure. The specific surface area of the fibers is 79.407 m²·g^-1. Electrochemical performance tests with a three-electrode system reveal the specific capacitance of the La₂CoMnO₆ nanofibers as 109.7 F·g^-1 at a current density of 0.5 A·g^-1. After 1000 charge-discharge cycles at a current density of 1 A·g^-1, the specific capacitance maintains 90.9% of its initial value, demonstrating a promising performance of the constraint capacitance and good cyclic stability.

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Research Article

Preparation and electrochemical performance of double perovskite La₂CoMnO₆ nanofibers

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Abstract

Abstract

Through electrospinning, La₂CoMnO₆ nanofibers were prepared from a polyvinylpyrrolidone/lanthanum nitrate–cobalt acetate–manganese acetate (PVP/LCM) precursor and were used as electrode materials. The morphologies and structures of the samples were characterized by field-emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and Brunauer-Emmett-Teller (BET) specific surface area analysis. The results show that the prepared La₂CoMnO₆ nanofibers are stable, one-dimensional structures formed from interconnected La₂CoMnO₆ nanoparticles with a diamond-like crystal structure. The specific surface area of the fibers is 79.407 m²·g^-1. Electrochemical performance tests with a three-electrode system reveal the specific capacitance of the La₂CoMnO₆ nanofibers as 109.7 F·g^-1 at a current density of 0.5 A·g^-1. After 1000 charge-discharge cycles at a current density of 1 A·g^-1, the specific capacitance maintains 90.9% of its initial value, demonstrating a promising performance of the constraint capacitance and good cyclic stability.
- electrospinning;
- double perovskite;
- super capacitor;
- electrode materials

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Preparation and electrochemical performance of double perovskite La₂CoMnO₆ nanofibers

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Preparation and electrochemical performance of double perovskite La₂CoMnO₆ nanofibers

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