离子固定凝聚合物电解质具有高离子转移数,用于高性能/金属电池
Longli Ma1,2, Xuanyang Li1,3, Jian Tan1,2
1Institute of Special Materials and Technology, Fudan University, Shanghai 200433, China.
ACS applied materials & interfaces
|December 2, 2023
概括
一种含的新型凝聚合物电解质 (B-GPE) 提高了/金属电池的安全性和性能. 这种灵活的电解质抑制了树的生长,使得稳定,高性能的能量储存.
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:
- /金属电池 (LMBs/SMBs) 提供高能量密度,但面临液体电解质的安全限制.
- 凝聚合物电解质 (GPEs) 弥合了液体和固体电解质之间的差距,提供高离子导电性和机械稳定性.
- 开发安全高效的电解质对于下一代金属电池至关重要.
研究的目的:
- 开发一种灵活的,含的凝聚合物电解质 (B-GPE),用于增强的金属电池.
- 调查B-GPE的交联结构和部分对离子导电性和离子传输的影响.
- 评估LMB和中小企业使用新型B-GPE的性能,重点关注树抑制和循环稳定性.
主要方法:
- 通过UV诱导的交联过程制造含的柔性GPE (B-GPE).
- 设计一个"温和"的电极/电解质接口,使用一阶段的现场聚合方法.
- B-GPE的电化学表征和LMB/SMB性能评估,包括循环稳定性和树抑制.
主要成果:
- B-GPE表现出良好的离子导电性和异常高的离子转移数,这归因于部分的电子吸收效应和乙烯氧化物链的电解质吸收.
- 在现场聚合方法创建了一个稳定的接口,增强电极内和电极/电解质接口的离子运输.
- 结合B-GPE的金属电池有效抑制了树突的生长,并表现出极好的循环稳定性.
结论:
- 开发的含的GPE为提高和金属电池的安全性和性能提供了有前途的解决方案.
- B-GPE的独特特性,包括其灵活的交叉链结构和增强的离子传输,是抑制树突形成的关键.
- 这种新型B-GPE具有显著的潜力,可以实现高性能和安全的下一代储能系统.
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