Arbi Hammad Mueen, Vijayalakshmi L, Anil Kumar Yedluri, Alzahmi Salem, Gopi Chandu V V Muralee, Rusydi Andrivo, Obaidat Ihab M
Department of Physics, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates.
Department of Automotive Engineering, Yeungnam University, Gyeongsan-si 38541, Republic of Korea.
Nanomaterials (Basel). 2023 Jun 30;13(13):1981. doi: 10.3390/nano13131981.
The composites of NiCoO with unique structures were substantially investigated as promising electrodes. In this study, the unique structured nanosheets anchored on nickel foam (Ni foam) were prepared under the hydrothermal technique of NiCoO and subsequent preparation of Co(OH). The Co(OH)@NiCoO nanosheet composite has demonstrated higher specific capacitances owing to its excellent specific surface region, enhanced rate properties, and outstanding electrical conductivities. Moreover, the electrochemical properties were analyzed in a three-electrode configuration to study the sample material. The as-designed Co(OH)@NiCoO nanosheet achieves higher specific capacitances of 1308 F·g at 0.5 A·g and notable long cycles with 92.83% capacity retention over 6000 cycles. The Co(OH)@NiCoO nanosheet electrode exhibits a long life span and high capacitances compared with the NiCoO and Co(OH) electrodes, respectively. These outstanding electrochemical properties are mainly because of their porous construction and the synergistic effects between NiCoO and Co(OH). Such unique Co(OH)@NiCoO nanosheets not only display promising applications in renewable storage but also reiterate to scientists of the unlimited potential of high-performance materials.
具有独特结构的NiCoO复合材料作为有前景的电极材料得到了广泛研究。在本研究中，通过水热法制备NiCoO并随后制备Co(OH)，从而在泡沫镍（Ni泡沫）上制备出具有独特结构的纳米片。Co(OH)@NiCoO纳米片复合材料因其优异的比表面积、增强的倍率性能和出色的电导率而表现出更高的比电容。此外，采用三电极配置对样品材料的电化学性能进行了分析。所设计的Co(OH)@NiCoO纳米片在0.5 A·g时实现了1308 F·g的更高比电容，并在6000次循环中具有92.83%的容量保持率，展现出显著的长循环性能。与NiCoO和Co(OH)电极相比，Co(OH)@NiCoO纳米片电极分别表现出长寿命和高电容。这些优异的电化学性能主要归因于它们的多孔结构以及NiCoO和Co(OH)之间的协同效应。这种独特的Co(OH)@NiCoO纳米片不仅在可再生储能方面显示出有前景的应用，也向科学家们重申了高性能材料的无限潜力。
