用硫酸盐修饰的玉米纤维素生物炭作为高性能超级电容器应用的电极材料
Peikuan Wang1, Tianran Zheng1, Shuyang Gan1
1Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China.
International journal of biological macromolecules
|March 18, 2025
概括
本研究介绍了一种简单的方法,可以从玉米废物中制造高性能纤维素生物炭电极. 由此产生的生物炭具有出色的电化学特性,可用于储能应用.
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
- 可再生能源可再生能源是可再生能源.
背景情况:
- 纤维素生物炭是一种有前途的电极材料用于储能,由于其性能.
- 纤维素材料需要预处理,以获得最佳的生物炭生产.
- 开发有效和可持续的生物碳合成方法至关重要.
研究的目的:
- 开发一种简化方法,从玉米中生产高质量的纤维素生物炭.
- 调查二硫酸盐预处理和硫酸盐对生物炭特性的影响.
- 为了评估合成生物炭的电化学性能,用于储能.
主要方法:
- 玉米先用二硫酸盐进行预处理,然后在没有洗的情况下进行直接烧解.
- 氧化 (KOH) 用于在900°C激活.
- 由此产生的生物炭 (ABU-900) 在电化学装置中进行了表征和测试.
主要成果:
- 未洗净的预处理的玉米生物炭 (ABU-900) 实现了高特异性表面积3130 m2/g.
- 在5000个循环后,生物炭表现出极好的电化学稳定性,具有94.1%的库伦比效率.
- 使用ABU-900的不对称超级电容器表现出141.2F/g的特定电容和高能量密度.
结论:
- 硫酸盐预处理和保留的硫酸盐增强了生物炭的特性,并引入了硫异原子.
- 这种方法为从废弃生物质中生产先进的纤维素生物炭电极提供了一个简单而有效的途径.
- 开发的生物炭显示出对高性能储能设备的巨大潜力.
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