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Three dimensional Ni1+xFe2?xS4-graphene-2D-MoSe2 as an efficient material for supercapacitors

机译:三维Ni 1+ x Fe 2? x S 4 -石墨烯- 2D-MoSe 2 作为超级电容器的有效材料

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A ternary Ni1+xFe2?xS4-graphene-2D-MoSe2 (Ni1+xFe2?xS4-g-MoSe2) nanocomposite was designed and fabricated through a facile two-step method. Well-dispersed Ni1+xFe2?xS4 nanoparticles on graphene sheets were achieved using a hydrothermal method followed by coating with MoSe2 nanosheets using in situ adsorption. The synergistic effect of the three components present in Ni1+xFe2?xS4-g-MoSe2 yielded enhanced electrochemical properties in terms of high specific capacitance reaching up to 2108 F g?1 at a current density of 1 A g?1, with capacity retention of 93.3% after 4000 cycles at the high charge–discharge current density of 5 A g?1. These outstanding capacitance features were mainly attributed to the unique Ni1+xFe2?xS4-g-MoSe2 nanostructure, allowing easy access to the pseudocapacitive species and fast ion/electron transfer. Overall, the prepared 3D nanocomposite is promising as an electrode material for advanced supercapacitors.
机译:三元Ni 1+ x Fe 2? x S 4 -石墨烯2D-MoSe 2 (Ni 1+ < em> x Fe 2? x S 4 -g-MoSe 2 )纳米复合材料。 Ni 1+ x Fe 2? x 石墨烯片上的/ small> S 4 纳米粒子是通过水热法实现的,然后用MoSe 2 纳米片进行涂覆使用原位吸附。 Ni 1+ x Fe 2? x S 4 -g-MoSe 2 的电化学性质增强电流密度为1 A g ?1 时达到2108 F g ?1 的高比电容,在5 A g ?1 的高充放电电流密度下,经过4000次循环后容量保持率为93.3%。这些出色的电容特性主要归因于独特的Ni 1+ x Fe 2? x S 4 -g-MoSe 2 纳米结构,可轻松访问准电容物质和快速的离子/电子转移。总体而言,制备的3D纳米复合材料有望用作高级超级电容器的电极材料。

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