甲蓝作为电解质中的氧化还原添加剂,用于基于木炭的先进混合超级电容器
Van Nhat Nguyen1, An-Giang Nguyen1,2, Thi Viet Bac Phung1,2
1Center for Environmental Intelligence, VinUniversity, Hanoi, 100000, Vietnam.
Scientific reports
|November 6, 2025
概括
在化电解质中用甲蓝色染料增强的生物质衍生木炭电极,显示了可持续超级电容器的性能改善. 这种具有成本效益的方法可以提高能量储存和重复使用污染物.
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:
- 由于成本效益和可持续性,生物质衍生碳材料正在获得超级电容器的吸引力.
- 从丰富的自然资源中开发高性能电极对于储能至关重要.
研究的目的:
- 为了研究超声波预处理木炭作为超级电容器电极的电化学性能.
- 为了提高超级电容器的性能,使用甲基蓝作为电解质中的氧化还原活性添加剂.
- 通过重新利用染料污染物来探索储能的可持续方法.
主要方法:
- 从生物质中提取的木炭使用超声波进行了预处理.
- 使用木炭电极制造超级电容器,采用三电极和对称配置.
- 甲蓝被引入水性化电解质中,以改善电化学性能.
主要成果:
- 木炭呈现出多孔结构,植物血管通道完好无损,有助于离子运输.
- 甲蓝的添加协同结合了电双层电容和伪电容,增强了电荷存储.
- 最优的设备实现了212.23 F g-1的特定电容,能量密度为15.34 Wh kg-1和出色的循环稳定性 (在2000个循环后保持91.3%).
结论:
- 经过超声波处理的生物质衍生木炭是高性能超级电容器的可行电极材料.
- 甲蓝通过联合电容机制显著提高了超级电容器的性能.
- 本研究提供了一种可持续且具有成本效益的储能策略,通过利用生物质和重新利用染料废弃物来储能.
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