交叉连接的多功能粘合剂在位调节离子电池中的阳极的固体电解质接口
Xiaofei Lou1, Yuanyuan Zhang2, Li Zhao3
1College of Mechatronic Engineering, North Minzu University, Yinchuan, 750021, Ningxia, China. feixiaolou@126.com.
Scientific reports
|October 30, 2023
概括
一种新的共价交联结合剂,酸 (CA) 和甲基纤维素 (CMC),增强了离子电池的阳极. 这种粘合剂提高了稳定性和性能,解决了.
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
- 化学工程是化学工程的重要组成部分.
背景情况:
- 阳极为离子电池提供高容量,但在循环过程中受到体积膨胀的影响.
- 有效的粘合剂对于保持电极完整性和减轻性能降低至关重要.
研究的目的:
- 开发一种用于阳极的新型,共交联粘合剂.
- 为了提高基于的离子电池的电化学性能和循环稳定性.
主要方法:
- 酸 (CA) 和甲基纤维素 (CMC) 用于通过化制造一种共价交联的CA@CMC结合物.
- 合成了Si@CA@CMC-1电极材料,并对电化学性能进行了测试.
- 现场电化学阻抗光谱 (EIS) 和X射线光电子光谱 (XPS) 用于分析粘合剂对固体电解质介相 (SEI) 的影响.
主要成果:
- Si@CA@CMC-1电极的初始库伦比效率 (ICE) 为82.1%.
- 在0.5A/g的510个循环后,其特定容量仍然高于商业石墨.
- 在CA@CMC粘合剂和颗粒之间形成的键被归因于增强的性能.
结论:
- 该CA@CMC粘合器有效地减轻了体积膨胀,并改善了电极稳定性.
- 粘合剂调整SEI组成的能力为优化阳极性能提供了新的策略.
- 这种方法提供了一个可扩展的方法,用于开发高级离子电池的高性能阳极.
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