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Fabrication of transition-metal oxide and chalcogenide nanostructures with enhanced electrochemical performances
Journal of Energy Storage ( IF 8.9 ) Pub Date : 2020-07-07 , DOI: 10.1016/j.est.2020.101621
Ruqiya Sehrish Gohar , Iqbal Ahmad , Afzal Shah , Saadat Majeed , Muhammad Najam-Ul-Haq , Muhammad Naeem Ashiq

Fabrication of new materials with unique nanostructure has emerged as a potent strategy to enhance their properties for various applications. Presently, we report the successful incorporation of SnSe (a metal chalcogenide) into LaDySn2O7 (a pyrochlore) in order to enhance the electrochemical performance as well as stability of composite. The synthesized materials were characterized by various techniques to confirm the phase and morphology. A good pseudocapacitive behavior was observed through cyclic voltammetry. Galvanostatic charge/discharge profile of nanocomposite affirmed a specific capacitance of 1780 F/g at 0.1 A/g. Moreover, the fabricated electrode material showed an excellent specific power of 6157.411 W/kg at a current density of 0.3 A/g. An excellent electrochemical stability of the composite material after 2000 cycles was also observed. These properties make the fabricated material a potential candidate for supercapacitor applications.



中文翻译:

具有增强的电化学性能的过渡金属氧化物和硫族化物纳米结构的制备

具有独特的纳米结构的新材料的制造已成为一种有效的策略,可以提高其在各种应用中的性能。目前,我们报道了成功地将SnSe(一种金属硫属元素化物)掺入LaDySn 2 O 7中(烧绿石),以增强复合材料的电化学性能和稳定性。用各种技术对合成的材料进行表征,以确认其相和形态。通过循环伏安法观察到良好的伪电容行为。纳米复合材料的恒电流充电/放电曲线证实了在0.1 A / g时的比电容为1780 F / g。此外,所制造的电极材料在0.3A / g的电流密度下显示出优异的比功率为6157.411W / kg。在2000次循环之后,还观察到复合材料的优异的电化学稳定性。这些特性使制造的材料成为超级电容器应用的潜在候选者。

更新日期:2020-07-07
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