针对电池的关尼丁,乙胺和基化酸电解质的比较研究
Iwan Sumarlan1,2, Anand Kunverji2, Anthony J Lucio2
1Department of Chemistry, University of Mataram, Jl. Majapahit. No. 62, Mataram 83115, Lombok, Indonesia.
概括
基于guanidine和acetamidine的新电解质为电池提供了更好的性能. 这些离子液体类似物 (ILA) 是廉价的,环保的替代品,可替代昂贵的伊米达电解质.
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
- 储能 储能 储能 储能 储能 储能
背景情况:
- 基于的电池是离子电池的可持续和具有成本效益的替代品,因为的丰富性.
- 目前的电池研究经常使用昂贵的伊米达化酸电解质,阻碍了工业规模扩大.
- 以尿素为基础的离子液体类似物 (ILA) 被提出作为更便宜的替代品,但由于高粘度和低导电性而受到影响.
研究的目的:
- 调查瓜尼丁化和乙胺化作为易斯基盐前体,用于化基电解质 (ILA).
- 为了评估AlCl3:瓜尼丁,AlCl3:胺氨酸和AlCl3:尿素ILAs的性能.
- 为基电池系统确定具有成本效益和高性能的电解质解决方案.
主要方法:
- 三种基于AlCl3的离子液体类似物 (ILA) 的合成和表征:AlCl3:瓜尼丁,AlCl3:胺胺和AlCl3:.
- 风湿学测量以确定室温粘度.
- 电化学分析包括循环电压测量 (CV),线性扫描电压测量 (LSV) 和硬币电池性能测试.
- 核磁共振 (NMR) 谱学用于结构分析.
主要成果:
- 与AlCl3:尿素 (240.9cP) 相比,AlCl3:瓜尼丁和AlCl3:胺氨酸的粘度明显较低 (52.9cP和76.0cP),导电性更高.
- 这三种电解质都显示出可逆的沉积/溶解,AlCl3:瓜尼丁和AlCl3:亚胺显示出优越的阳极稳定性 (+2.23V) 超过AlCl3:尿素 (+2.12V).
- 硬币细胞测试显示,在100个循环后,与AlCl3:Urea (88%) 相比,AlCl3:Guanidine (98%) 和AlCl3:Acetamidine (97%) 的Coulombic效率更高.
结论:
- 与AlCl3:尿素系统相比,AlCl3:氨酸和AlCl3:氨酸ILAs具有更好的电化学性能和稳定性.
- 这些新的ILA保持了低的经济成本,解决了工业电池生产的关键障碍.
- 关尼丁和乙胺化物是开发用于商业基电池的先进电解质的有希望的,具有成本效益的前体.
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