Sustainable and effective electrochemical materials for supercapacitors are greatly needed for solving the global problems of energy storage. In this regard, a facile nanocomposite of Pd/NiOPdO was synthesized using foliar phyto eco-friendly agents and examined as an electrochemical electrode active material for supercapacitor application. The nanocomposite showed a mixed phase of a ternary nano metal oxide phase of rhombohedral NiO and tetragonal PdO confirmed by X-ray diffraction (XRD), scanning electron microscopy (SEM) and XPS (X-rays photoelectron spectroscopy). The optical (direct) energy value of the synthesized nanocomposite was 3.14 eV. The phyto-functionalized nanocomposite was studied for electrochemical supercapacitor properties and revealed a specific capacitance of 88 F g and low internal resistance of 0.8 Ω. The nanoscale and phyto organic species functionalized nanocomposite exhibited enhanced electrochemical properties for supercapacitor application.
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http://dx.doi.org/10.1039/d2ra07292k | DOI Listing |
Int J Biol Macromol
December 2024
Jiangsu Key Laboratory of Sericultural and Animal Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang 212100, China; Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Scientific Research Center, Chinese Academy of Agricultural Sciences, Zhenjiang 212100, China.
Most of the developed flexible hydrogel supercapacitors struggle to maintain their electrochemical stability and structural integrity under tensile strain. Therefore, developing a flexible supercapacitor with excellent mechanical properties and stable electrochemical performance under different strains remains a challenge. Based on the previous cartilage-like structure, we designed a new coarse nanofiber bundle and ordered network.
View Article and Find Full Text PDFNanomaterials (Basel)
December 2024
School of Instrument and Electronics, North University of China, Taiyuan 030051, China.
In order to broaden the working voltage (1.23 V) of aqueous supercapacitors, a high-performance asymmetric supercapacitor with a working voltage window reaching up to 2.1 V is assembled using a nanorod-shaped molybdenum trioxide (MoO) negative electrode and an activated carbon (AC) positive electrode, as well as a sodium sulfate-ethylene glycol ((NaSO-EG) electrolyte.
View Article and Find Full Text PDFGels
December 2024
Quantum Technologies Research Center, Science and Research Branch, Islamic, Azad University, Tehran 1477893855, Iran.
Flexible solid-state-based supercapacitors are in demand for the soft components used in electronics. The increased attention paid toward solid-state electrolytes could be due to their advantages, including no leakage, special separators, and improved safety. Gel polymer electrolytes (GPEs) are preferred in the energy storage field, likely owing to their safety, lack of leakage, and compatibility with various separators as well as their higher ionic conductivity (IC) than traditional solid electrolytes.
View Article and Find Full Text PDFSmall Methods
December 2024
Nanosensor Research Institute, Hanyang University ERICA, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan, 15588, Republic of Korea.
The crystal phase of pseudocapacitive materials significantly influences charge storage kinetics and capacitance; yet, the underlying mechanisms remain poorly understood. This study focuses on tungsten oxide (WO), a material exhibiting multiple crystal phases with potential for energy storage. Despite extensive research on WO, the impact of different crystal structures on charge storage properties remains largely unexplored.
View Article and Find Full Text PDFRSC Adv
December 2024
Department of Chemical Engineering, School of Mechanical, Chemical and Materials Engineering, Adama Science and Technology University P. O. Box 1888 Adama Ethiopia
Hierarchical binder-free NiCoO@CuS composite electrodes have been successfully fabricated on a nickel foam surface using a facile hydrothermal method and directly used as a battery-type electrode material for supercapacitor applications. The surface morphological studies reveal that the composite electrode exhibited porous NiCoO nanograss-like structures with CuS nanostructures. The surface area of the composite is significantly enhanced (91.
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