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首页> 美国卫生研究院文献>Scientific Reports >Ultrathin nickel hydroxide nanosheet arrays grafted biomass-derived honeycomb-like porous carbon with improved electrochemical performance as a supercapacitive material
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Ultrathin nickel hydroxide nanosheet arrays grafted biomass-derived honeycomb-like porous carbon with improved electrochemical performance as a supercapacitive material

机译：超薄氢氧化镍纳米片阵列接枝生物质衍生的蜂窝状多孔碳具有改善的电化学性能作为超电容材料

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Three-dimensional hierarchical honeycomb-like activated porous carbon pillared ultrathin Ni(OH)2 nanosheets (Ni(OH)2 NSs@HAPC) for use as supercapacitor materials were facilely synthesized. With an aid of pine cone flowers as a biomass source, HAPC conducting scaffolds were prepared by the alkali treatment and pyrolysis methods under an inert gas atmosphere. Subsequently, the Ni(OH)2 NSs were synthesized evenly on the surface of HAPC via a solvothermal method. The resulting HAPC and Ni(OH)2 NSs@HAPC composite materials offered free pathways for effective diffusion of electrolyte ions and fast transportation of electrons when employed as an electrode material. The Ni(OH)2 NSs@HAPC composite electrode exhibited excellent electrochemical properties including a relatively high specific capacitance (Csp) value of ~ 916.4 F/g at 1 A/g with good cycling stability compared to the pristine HAPC and Ni(OH)2 NSs electrodes. Such bio-friendly derived carbon-based materials with transition metal hydroxide/oxide composite materials could be a promising approach for high-performance energy storage devices because of their advantageous properties of cost effectiveness and easy availability.
机译：轻松地合成了用作超级电容器材料的三维分层蜂窝状活性多孔碳柱超薄Ni（OH）2纳米片（Ni（OH）2 NSs @ HAPC）。借助松果花作为生物质来源，在惰性气体气氛下通过碱处理和热解方法制备了HAPC导电支架。随后，通过溶剂热法在HAPC表面均匀地合成Ni（OH）2 NSs。当用作电极材料时，所得的HAPC和Ni（OH）2 NSs @ HAPC复合材料为电解质离子的有效扩散和电子的快速传输提供了自由途径。 Ni（OH）2 NSs @ HAPC复合电极表现出优异的电化学性能，与原始HAPC和Ni（OH）相比，在1 A / g时具有〜916.4 F / g的相对较高的比电容（Csp）值，并具有良好的循环稳定性。 2个NSs电极。这种具有过渡金属氢氧化物/氧化物复合材料的生物友好衍生碳基材料，由于其具有成本效益和易于获得的优势，因此可能是用于高性能能量存储设备的一种有前途的方法。

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