三组分的NiO/Fe3O4/rGO纳米结构作为电极材料,用于超级电容器和酒精电氧化
Mohammad Bagher Askari1, Mohammad Taghi Tourchi Moghadam2, Parisa Salarizadeh3
1Department of Semiconductor, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, Iran.
Heliyon
|November 6, 2024
概括
一种新的/氧化铁纳米复合物与减少的氧化石墨烯 (rGO) 混合,显示了酒精燃料电池和超级电容器的高效率. 这种NiO/Fe3O4/rGO材料表现出极好的催化活性和甲醇和乙醇氧化的稳定性.
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
- 纳米技术 纳米技术
背景情况:
- 开发高效的电极材料对于推进储能和酒精燃料电池至关重要.
- 现有材料在活动,稳定性和成本效益方面经常面临挑战.
研究的目的:
- 为超级电容电极和酒精燃料电池催化剂合成和评估一种新的NiO/Fe3O4/rGO纳米复合材料.
- 研究结合NiO,Fe3O4和降解石墨烯氧化物 (rGO) 对电化学性能的协同效应.
主要方法:
- NiO/Fe3O4和NiO/Fe3O4/rGO纳米复合物的水热合成.
- 结构性表征以确认合成.
- 电化学评估超级电容器性能 (特异电容,稳定性) 和酒精氧化催化 (甲醇氧化反应-MOR,乙醇氧化反应-EOR) 使用时计分析.
主要成果:
- NiO / Fe3O4 / rGO电极表现出高电流密度和MOR (450 mA / cm2在0.67 V,98.7%的稳定性) 和EOR (235 mA / cm2在0.76 V,96.4%的稳定性) 的出色稳定性.
- 作为超级电容电极,NiO/Fe3O4达到946F/g,NiO/Fe3O4/rGO达到1155F/g,具有显著的循环稳定性 (NiO/Fe3O4/rGO在10,000个循环后达到90.6%).
- 混合结构显示出协同效应的好处,增强了电催化活性和储能能力.
结论:
- 合成的NiO/Fe3O4/rGO纳米复合材料是超级电容器和酒精燃料电池的高效和稳定的材料.
- 这种具有成本效益的材料为下一代能源存储和转换设备提供了有希望的替代品.
- 整合rGO显著提高了金属氧化物纳米复合材料的性能.
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