Amin Bahareh Golrokh, Masud Jahangir, Nath Manashi
Department of Chemistry, Missouri University of Science and Technology USA
RSC Adv. 2019 Nov 21;9(65):37939-37946. doi: 10.1039/c9ra06439g. eCollection 2019 Nov 19.
A facile, innovative synthesis for the fabrication of NiCoSe-rGO on a Ni foam nanocomposite a simple hydrothermal reaction is proposed. The as-prepared NiCoSe-rGO@Ni foam electrode was tested through pxrd, TEM, SEM, and EDS to characterize the morphology and the purity of the material. The bimetallic electrode exhibited outstanding electrochemical performance with a high specific capacitance of 2038.55 F g at 1 A g. NiCoSe-rGO@Ni foam exhibits an extensive cycling stability after 1000 cycles by retaining 90% of its initial capacity. A superior energy density of 67.01 W h kg along with a high power density of 903.61 W kg further proved the high performance of this electrode towards hybrid supercapacitors. The excellent electrochemical performance of NiCoSe-rGO@Ni foam can be explained through the high electrocatalytic activity of NiCoSe in combination with reduced graphene oxide which increases conductivity and surface area of the electrode. This study proved that NiCoSe-rGO@Ni foam can be utilized as a high energy density-high power density electrode in energy storage applications.
提出了一种在泡沫镍上制备NiCoSe-rGO纳米复合材料的简便、创新合成方法——简单的水热反应。通过pxrd、TEM、SEM和EDS对所制备的NiCoSe-rGO@泡沫镍电极进行测试，以表征材料的形态和纯度。该双金属电极表现出优异的电化学性能，在1 A g时比电容高达2038.55 F g。NiCoSe-rGO@泡沫镍在1000次循环后仍保持其初始容量的90%，具有广泛的循环稳定性。67.01 W h kg的优异能量密度以及903.61 W kg的高功率密度进一步证明了该电极对混合超级电容器的高性能。NiCoSe-rGO@泡沫镍优异的电化学性能可以通过NiCoSe与还原氧化石墨烯的高电催化活性来解释，还原氧化石墨烯提高了电极的导电性和表面积。本研究证明，NiCoSe-rGO@泡沫镍可作为储能应用中的高能量密度-高功率密度电极。
