Superb Pseudocapacitance Based on Three-Dimensional Porous Nickel Oxide Modified with Iridium Oxide
| Autor: | Mona Amiri, Aicheng Chen, Werden Keeler, Suresh K. Konda |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Nickel oxide Metallurgy chemistry.chemical_element 02 engineering and technology Thermal treatment 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Energy storage Pseudocapacitance 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Nickel General Energy Chemical engineering chemistry Pseudocapacitor Physical and Theoretical Chemistry 0210 nano-technology Porosity |
| Zdroj: | The Journal of Physical Chemistry C. 121:27274-27284 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/acs.jpcc.7b08357 |
| Popis: | The need for environmentally compatible, less polluting, and more efficient energy systems has spurred extensive research into the development of batteries and other energy storage devices. Here, we report on a novel three-dimensional (3D) porous nickel modified with iridium oxide (IrO2) toward the design of a high-performance pseudocapacitor. The 3D porous nickel is grown directly onto a Ni plate via a facile electrochemical deposition method assisted by the simultaneously formed hydrogen bubble template. The effects of the electrodeposition time and the current density are systemically investigated, revealing that 3.0 A cm–2 and 150 s are the optimal conditions for the growth of the 3D porous nickel with the highest active surface area, which is subsequently modified with different quantities of IrO2. The electrodeposited 3D porous Ni network structure serves as a suitable template to accommodate the cast iridium chloride precursor and to anchor the formed IrO2 during the subsequent thermal treatment. T... |
| Databáze: | OpenAIRE |
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