基于高性能超级电容器的废弃诺亚的层次性多孔碳
Tianyi Ma1, Shiai Xu1, Mengshi Zhu2
1School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
ACS omega
|April 1, 2024
概括
废弃的菜被转化为超级电容器的高性能多孔活性碳电极. 这种可持续材料提供了出色的电容和能量密度,证明了先进的电化学储能系统的潜力.
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:
- 开发具有成本效益和高性能的电极材料对于推进电化学能量储存至关重要.
- 利用农业废物作为先进材料的前体,提供了一种可持续的方法.
研究的目的:
- 从菜草中合成多孔活性炭,用于超级电容器应用.
- 评估衍生材料的电化学性能和储能能力.
主要方法:
- 奎诺亚草被预碳化并使用碳酸 (K2CO3) 激活.
- 由此产生的多孔活性炭 (QSC-3) 以其特定的表面积和电容为特征.
- 在KOH和Na2SO4电解质中组装和测试了对称的超级电容器.
主要成果:
- QSC-3的高特异面积为1802 m2g-1和特异电容为469.5 Fg-1在0.5 Ag-1时.
- 超级电容器表现出高能量密度 (高达39.68Wh kg-1) 和功率密度 (高达999.00W kg-1).
- 观察到卓越的循环稳定性,在10,000个循环后,电容保持率为97.55% (KOH) 和96.20% (Na2SO4).
结论:
- 废弃的菜草可以有效地转化为超级电容器的低成本,高性能电极材料.
- 开发的QSC材料显示了可持续电化学能量储存的重大前景.
- 这项研究突出了农业副产品在创建先进的储能解决方案方面的潜力.
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