通过多孔导电聚氨改性石墨烯复合材料添加剂提高电池性能
Hao-Tung Lin1, Eunice Chuang2, Sheng-Chun Lin2
1Energy Storage Laboratory, Industrial Technology Research Institute, Hsinchu 31041, Taiwan.
Nanomaterials (Basel, Switzerland)
|March 27, 2024
概括
多孔导电型聚氨改性石墨烯复合材料 (PMGCs) 通过降低内部电阻和提高充/放电速率来提高电池的性能. 最佳的PMGC含量至关重要,因为过量会对电池老化产生负面影响.
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
- 储能 储能 储能 储能 储能 储能
背景情况:
- 高速充/放电性能对于绿色能源应用中的离子电池至关重要.
- 像碳纳米管和石墨烯这样的传统添加剂面临成本和聚合挑战.
- 聚氨酸 (PANI) 提供了一种具有成本效益,稳定性和导电性的替代品.
研究的目的:
- 为了提高电池的性能,使用多孔导电型聚氨改性石墨烯复合材料 (PMGCs).
- 为了研究不同PMGC含量对电极性能和电池性能的影响.
- 为了优化PMGC度,以提高电池的功能.
主要方法:
- 使用氨基硫酸盐 (APS) 作为氧化剂和石墨烯表面修饰剂合成PMGCs.
- 系统评估离子电池电极中的PMGCs.
- 分析内部电阻,老化,充/放电速率和循环性能.
- 使用FT-IR,TGA和拉曼光谱进行了表征.
主要成果:
- PMGCs 呈现出一个多孔结构,纳米级 PANI 交织在石墨烯上.
- 添加0.5%的PMGC显著降低了内部电阻,并提高了快速充/放电能力.
- 过度的PMGC含量对电池老化和自放电特性产生了不利影响.
结论:
- 优化PMGC内容是提高电池性能的关键.
- 对于推进能源存储系统和电动汽车,PMGCs显示出前景.
- 这项研究为开发下一代电池提供了关键的见解.
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