| Preparation and electrochemical performance of double perovskite La2CoMnO6 nanofibers |
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| 作者姓名： | Jie Fu Heng-yan Zhao Jie-run Wang Yu Shen Ming Liu |
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| 作者单位： | College of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China |
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| 基金项目： | China(201602113)，the Scientific Research Project of Liaoning Education Department(L2013177)，the National Natural Science Foundation of China(21106012) |
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| 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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| 关 键 词： | electrospinning double perovskite super capacitor electrode materials |
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