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Nitrogen‐Doped Porous Graphene Coated with Fe3O4 Nanoparticles for Advanced Supercapacitor Electrode Material with Improved Electrochemical Performance
Particle & Particle Systems Characterization ( IF 2.7 ) Pub Date : 2020-02-27 , DOI: 10.1002/ppsc.202000011 Siyu Su 1 , Yueming Lin 1 , Huimin Dai 1 , Liuqin Lai 1 , Xiaohong Zhu 1
Particle & Particle Systems Characterization ( IF 2.7 ) Pub Date : 2020-02-27 , DOI: 10.1002/ppsc.202000011 Siyu Su 1 , Yueming Lin 1 , Huimin Dai 1 , Liuqin Lai 1 , Xiaohong Zhu 1
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With the increasing demand for high‐performance energy storage devices, single materials of ordinary structures for electrode materials have become increasingly difficult to meet people's needs. Therefore, composites of inimitable structures have drawn considerable attention. In this work, nitrogen‐doped porous graphene coated with Fe3O4 nanoparticles (NPGF) is prepared by an efficient and green pyrolysis method. Structural and compositional characterizations confirm that the NPGF nanohybrids possess uniformly distributed pore structure and quite pure composition which is free of any impurities. In addition, electrochemical characterization verifies the excellent electrochemical performance, such as high‐specific capacitance (713 F g−1 at 1 A g−1), prominent rate capability (capacitance retention of 77.3% and 67.9% when the current density is increased respectively from 1 to 10 and 20 A g−1), and outstanding cycling stability (capacitance retention of 94.3% after 3000 cycles). Such promising results suggest that the NPGF nanohybrids have great application prospects in future high‐performance supercapacitors.
中文翻译：
掺有Fe3O4纳米粒子的氮掺杂多孔石墨烯，用于具有改进的电化学性能的高级超级电容器电极材料
随着对高性能能量存储装置的需求的增加，用于电极材料的普通结构的单一材料变得越来越难以满足人们的需求。因此，独特结构的复合材料引起了极大的关注。在这项工作中，通过高效的绿色热解方法制备了涂覆有Fe 3 O 4纳米颗粒（NPGF）的氮掺杂多孔石墨烯。结构和组成特征证实，NPGF纳米杂化物具有均匀分布的孔结构和非常纯净的组成，不含任何杂质。此外，电化学表征验证了优良的电化学性能，诸如高比电容（713 F G -1 1 A G -1），出色的倍率能力（当电流密度分别从1增加到10和20 A g -1时，电容保持率分别为77.3％和67.9％）和出色的循环稳定性（3000次循环后电容保持率为94.3％）。这样有希望的结果表明，NPGF纳米杂化物在未来的高性能超级电容器中具有广阔的应用前景。
更新日期：2020-02-27
中文翻译：
掺有Fe3O4纳米粒子的氮掺杂多孔石墨烯，用于具有改进的电化学性能的高级超级电容器电极材料
随着对高性能能量存储装置的需求的增加，用于电极材料的普通结构的单一材料变得越来越难以满足人们的需求。因此，独特结构的复合材料引起了极大的关注。在这项工作中，通过高效的绿色热解方法制备了涂覆有Fe 3 O 4纳米颗粒（NPGF）的氮掺杂多孔石墨烯。结构和组成特征证实，NPGF纳米杂化物具有均匀分布的孔结构和非常纯净的组成，不含任何杂质。此外，电化学表征验证了优良的电化学性能，诸如高比电容（713 F G -1 1 A G -1），出色的倍率能力（当电流密度分别从1增加到10和20 A g -1时，电容保持率分别为77.3％和67.9％）和出色的循环稳定性（3000次循环后电容保持率为94.3％）。这样有希望的结果表明，NPGF纳米杂化物在未来的高性能超级电容器中具有广阔的应用前景。
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