An effective technique for improving electrochemical efficiency is to rationally design hierarchical nanostructures that completely optimize the advantages of single components and establish an interfacial effect between structures. In this study, core-shell NiMoO4@Ni9S8/MoS2 hetero-structured nanorods are prepared via a facile hydrothermal process followed by a direct sulfurization. The resulting hierarchical architecture with outer Ni9S8/MoS2 nanoflakes shell on the inner NiMoO4 core offers plentiful active sites and ample charge transfer pathways in continuous heterointerfaces. Ascribing to the porous core-shell configuration and synergistic effect of bimetal sulfides, the obtained NiMog(4)@Ni9S8/MoS2 as electrode material presents an unsurpassed specific capacity of 373.4 F g(-1) at 10 A g(-1) and remarkable cycling performance in the 6 M KOH electrolyte. This work delivers a rational method for designing highly efficient electrodes for supercapacitors, enlightening the road of exploring low-cost materials in the energy storage domain.
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机译:提高电化学效率的有效技术是合理设计分层纳米结构,完全优化单个组分的优势,并在结构之间建立界面效应。本研究通过简单的水热法制备了核壳NiMoO4@Ni9S8/MoS2异质结构纳米棒,然后直接硫化。由此产生的层级结构在内部NiMoO4核心上具有外部Ni9S8/MoS2纳米片壳,在连续异质界面中提供了丰富的活性位点和充足的电荷转移途径。NiMog(4)@Ni9S8/MoS2作为电极材料,在10 A g(-1)下表现出无与伦比的比容量,在6 M KOH电解液中具有显著的循环性能。本工作为超级电容器高效电极设计提供了合理的方法,为储能领域低成本材料的探索开辟了道路。
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