优化电化学性能:用大麻衍生活性碳对超级电容器的水性电解质进行研究
Kanisorn Klangvijit1, Khemjiranee Bowornthommatadsana1, Mayuree Phonyiem Reilly1
1College of Materials Innovation and Technology, King Mongkut's Institute of Technology Ladkrabang, 1 Chalongkrung Rd., Ladkrabang, Bangkok 10520, Thailand.
ACS omega
|March 3, 2025
概括
大麻衍生活性炭 (HAC) 显示出优越的超级电容器性能. 由于其高表面积和优化的孔隙结构,HAC提供了增强的能量和功率密度,特别是硫酸电解质.
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
- 可再生能源材料可再生能源材料
背景情况:
- 超级电容器是重要的储能装置.
- 开发高性能,具有成本效益的电极材料至关重要.
- 来自生物质的活性碳提供了一个可持续的替代方案.
研究的目的:
- 为了合成和评估用于超级电容电极的麻衍生活性炭 (HAC).
- 为了比较HAC与商业活性炭 (AC) 的电化学性能.
- 为了研究不同电解质对HAC性能的影响.
主要方法:
- 大麻被化学激活使用NaOH产生HAC.
- 在酸性 (H2SO4),中性 (Na2SO4) 和基本性 (KOH) 电解质中测试了电化学性能.
- 测量了特定的表面积,电容,能量密度和功率密度.
主要成果:
- 高温电压表现出高特异面积 (2612 m2/g),超过商业AC.
- 在HAC上的氧功能群对伪电容性有所贡献.
- 在1M H2SO4.4中,HAC达到594F/g的最大特异电容.
- 高温交流表现出明显更高的能量 (82Wh/kg) 和功率密度 (188W/kg) 比商业交流.
结论:
- HAC是超级电容器的一个有前途的高性能电极材料.
- 当与H2SO4电解液一起使用时,材料的性能特别有利.
- HAC为传统电极材料提供了一种可持续且具有成本效益的替代方案.
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