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Incorporating Oxygen CoP Nanosheets: Facile Synthesis and Application for Supercapacitor Electrodes

机译:掺入氧气CoP纳米片:超级电容器电极的简便合成与应用

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As an effective way, surface functionalization can modulate the electrochemical properties ofnanomaterials for supercapacitors. The Co3O4 nanosheets as the precursor have been synthesized usinga solvothermal reaction followed by a high-temperature calcination reaction. Oxygen-incorporatingCoP nanosheets were obtained via a high-temperature phosphating reaction. The obtained sampleshave been characterized by X-ray diffraction and transmission electron microscopy. Theelectrochemical results displayed that the oxygen-incorporating CoP nanosheets are promising anodematerial for high-performance supercapacitor devices. The specific capacitance of the sample could becalculated to 416, 345 and 317 F g-1 at a current density of 2, 5 and 10 A g-1, respectively. Even after900 cycles, the capacitive retention of the oxygen-incorporating CoP nanosheets electrode was 97%and it remained unchanged, manifesting that such a supercapacitor displays a good electrochemicalcycling stability. The high specific capacity, long cycle stabilities as well as great rate capability makethe oxygen-incorporating CoP nanosheets a good candidate for high-performance supercapacitors.
机译:作为一种有效的方法,表面功能化可以调节用于超级电容器的纳米材料的电化学性能。已经使用溶剂热反应然后进行高温煅烧反应合成了作为前体的Co 3 O 4纳米片。通过高温磷化反应获得掺氧的CoP纳米片。所获得的样品已经通过X射线衍射和透射电子显微镜表征。电化学结果表明,掺氧CoP纳米片是用于高性能超级电容器器件的有希望的阳极材料。可以在2、5和10 A g-1的电流密度下分别计算出样品的比电容为416、345和317 F g-1。即使经过900次循环,掺氧CoP纳米片电极的电容保持率仍为97%,并且保持不变,表明这种超级电容器显示出良好的电化学循环稳定性。高比容量,长循环稳定性以及高倍率性能使掺氧CoP纳米片成为高性能超级电容器的理想选择。

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