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Preparation and electrochemical performance of double perovskite La2CoMnO6 nanofibers

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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.

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Acknowledgements

This work was financially supported by the Natural Science Foundation of Liaoning Province, China (No. 201602113), the Scientific Research Project of Liaoning Education Department (No. L2013177), and the National Natural Science Foundation of China (No. 21106012).

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Authors and Affiliations

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

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

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  1. Jie Fu
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  2. Heng-yan Zhao
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Correspondence to Jie Fu.

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Fu, J., Zhao, Hy., Wang, Jr. et al. Preparation and electrochemical performance of double perovskite La2CoMnO6 nanofibers. Int J Miner Metall Mater 25, 950–956 (2018). https://doi.org/10.1007/s12613-018-1644-1

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  • DOI: https://doi.org/10.1007/s12613-018-1644-1

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