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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >2D nanosheet/3D cubic framework Ni-Co sulfides for improved supercapacitor performance via structural engineering
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2D nanosheet/3D cubic framework Ni-Co sulfides for improved supercapacitor performance via structural engineering

机译:2D纳米片/ 3D立方框架Ni-Co Co硫化物通过结构工程改善超级电容器性能

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摘要

The construction of multi-dimensional structured battery-type electrode materials is a promising strategy to develop high performance electrodes for supercapacitors. Herein, a series of battery-type Ni3S2@Co3S4 electrodes with different morphologies are synthesized by controlling the hydrothermal reaction time. Owing to the unique structure with independent but interconnected 2D nanosheets and 3D cubic frameworks, NCS-60 displays high conductivity, numerous active sites and good wettability behavior. It can deliver a high specific capacity of 388.9 mA h g(-1)(3500 F g(-1)) at 1 A g(-1), an outstanding rate capacity of maintaining 88.6% at 10 A g(-1)and long cycle stability. The battery-type supercapacitor hybrid (BSH) device with active carbon (AC) as the negative electrode delivers an energy density of 41.8 W h kg(-1)at the power density of 800 W kg(-1). This study provides a feasible route for regulating the morphologies ofin situgrowth materials that improve the electrochemical performance of supercapacitors.
机译:多维结构电池型电极材料的构造是开发超级电容器高性能电极的有希望的策略。这里,通过控制水热反应时间合成具有不同形态的一系列电池型Ni3S2 @ Co3S4电极。由于具有独立但互联的2D纳米片和3D立方框架的独特结构,NCS-60显示出高导电性,众多有源网站和良好的润湿性行为。它可以在1A(-1)下提供388.9 mA Hg(-1)的高比容量(3500°F(-1)),优异的速率容量保持在10 a g(-1)的88.6%长周期稳定性。具有活性炭(AC)的电池型超级电容器杂交(BSH)装置,因为负电极以800W kg(-1)的功率密度提供41.8WH kg(-1)的能量密度。本研究提供了一种可行的途径,用于调节原料型材料的形态,从而提高超级电容器的电化学性能。

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