制造高性能不对称超级电容器使用皮活性碳和MnFe2O4纳米结构
Faheem Ahmed1, Shalendra Kumar1,2, Nagih M Shaalan1,3
1Department of Physics, College of Science, King Faisal University, P.O. Box 400, Al-Ahsa 31982, Saudi Arabia.
Nanomaterials (Basel, Switzerland)
|June 27, 2023
概括
米活性炭与MnFe2O4纳米结构相结合,提高了不对称超级电容器的性能. 这种可持续的方法利用农业废物进行高容量储能,具有出色的稳定性.
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
- 可持续能源 可持续能源
背景情况:
- 对于高效,成本效益和环保的储能解决方案的需求日益增长.
- 米活性炭 (RHAC) 提供了丰富,低成本和良好的电化学性能.
- MnFe2O4纳米结构是有效的伪容量材料.
研究的目的:
- 提高非对称超级电容器 (ASC) 的电容和能量密度.
- 探索将RHAC与MnFe2O4纳米结构相结合的协同效应.
- 使用农业废物开发可持续的储能解决方案.
主要方法:
- 通过激活和碳化,从米中制造RHAC.
- 合成的MnFe2O4纳米结构.
- 使用静电电荷放电,循环电量计和电化学阻抗光谱学,组装和电化学表征ASC.
主要成果:
- RHAC的BET表面积为980 m2/g,平均孔径为7.2 nm.
- 该ASC在0.5A/g时达到约420F/g的最大特异电容.
- 在6A/g的12,000个循环后,ASC保持了98%的电容,显示出高稳定性和速率能力.
结论:
- RHAC和MnFe2O4纳米结构的协同组合显著提高了ASC的性能.
- 开发的ASC表现出高特异电容,优异的速率能力和长期周期稳定性.
- 这项研究提出了一种可持续的储能方法,通过重新利用农业废物来储能.
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