Ester 作为非水性电池的调节性离子载体 电化学 电化学
Devaraj Shanmukaraj1, Sylvie Grugeon, Grégory Gachot
1Laboratoire de Réactivité et Chimie des Solides, UMR 6007, Université de Picardie Jules Verne, 80039 Amiens, France.
Journal of the American Chemical Society
|February 17, 2010
概括
新的乙烯可以溶解关键的电池化合物,提高离子电池的安全性和容量. 这些多功能化合物为先进的电池电解质提供了突破.
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
- 协调化学 协调化学
背景情况:
- 化 (LiF),氧化 (Li2O) 和过氧化 (Li2O2) 对于电池性能至关重要,它们会影响Li空气电池的固体电解质介相 (SEI) 形成和氧气减少.
- 在基电解质中溶解这些化合物对于提高电池安全性,寿命和容量至关重要.
- 目前的性溶剂缺乏有效溶解所需的结能力,阻碍了实际解决方案.
研究的目的:
- 引入一种新型的乙烯家族,旨在提高关键电池化合物的可溶性.
- 为了证明可调节的易斯酸性,这些酸以控制溶解.
- 为改进电池电解质配方提供一种新的离子载体类别.
主要方法:
- 一个新型乙烯家族的合成,其总式为Y-C((CH(2) O) ((Z(1) O) (((Z(2) O)) B.
- 调整路易斯酸度和电子亲和力通过Y和Z的修改{1,2) 组.
- 测试LiF,Li(2) O和Li(2) O(2) 在EC/DMC和DMF等电池溶剂中的可溶性,使用合成的 Ester.
主要成果:
- 由于几何约束,合成的乙表现出可调的易斯酸性.
- 在EC/DMC和DMF中实现了LiF,Li(2) O和Li(2) O(2) 的部分或全部溶解.
- 基离子载体表现出简单的合成,高可变性和快速的汇率.
结论:
- 新型 Ester 代表了协调化学和电解质设计中的重大进步.
- 这些化合物为克服关键电池材料的可溶性挑战提供了有希望的策略.
- 这些发现为提高先进电池系统的安全性,寿命和容量铺平了道路.
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