NiO/MnO2被涂在碳上,作为超级电容器应用中的电极材料
Sadegh Azizi1, Mohammad Bagher Askari2, Seyed Mohammad Rozati1
1Department of Physics, Faculty of Science, University of Guilan, PO Box 41335-1914, Rasht, Iran.
Nanotechnology
|October 17, 2024
概括
这项研究在超级电容器的碳上合成了和氧化. 由此产生的电极表现出高容量和稳定性,为LED灯供电.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 储能 储能 储能 储能 储能 储能
背景情况:
- 过渡金属氧化物是超级电容器电极的有希望的,因为它们的电荷存储能力.
- 开发高效和稳定的电极材料对于推进储能技术至关重要.
研究的目的:
- 在碳 (CF) 基板上合成和表征双金属和氧化 (NiO/MnO2),用于超级电容器应用.
- 在三电极系统中评估合成的NiO/MnO2/CF电极的电化学性能和稳定性.
- 使用NiO/MnO2/CF电极构建和测试一个对称的超级电容器装置.
主要方法:
- NiO/MnO2在碳基底上的水热合成.
- 在KOH电解质中使用循环电量计,电化学阻抗光谱和静电电荷放电进行电化学表征.
- 对称超级电容器装置的制造和测试.
主要成果:
- NiO/MnO2/CF电极表现出法拉达式行为,其特定容量为1627 Fg-1,5000个循环后的稳定性为96.8%.
- 对称超级电容器的能量和功率密度分别为43 Wh kg-1和559 W kg-1.
- 该设备在5000个循环中显示出92%的稳定性,并成功为LED供电53秒.
结论:
- 碳上的双金属NiO/MnO2是超级电容器的高效电极材料.
- 合成材料具有出色的电荷储存能力,稳定性,并有可能用于实际的储能应用.
- 制造的超级电容器证明了这种材料在为小型电子设备提供动力的可行性.
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