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用于离子电池的合金类金属片阳极的接口工程和结构设计:一篇综述
Rui Wang1, Song Sun1, Chunyi Xu1
1Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology, School of Material Science and Engineering, Hebei University of Technology, Tianjin, 300130, China. zhang_xin@hebut.edu.cn.
Materials horizons
|December 12, 2023
概括
合金金属阳极为离子电池提供高能量密度,但面临着缓慢的动力学和低效率等挑战. 结构设计和接口工程等策略是提高其性能的关键.
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:
- 合金金属阳极是离子电池 (LIB) 和金属电池 (LMB) 中传统粉末电极的替代品.
- 这些阳极具有高的特定容量和导电性,但受到缓慢的化动力学,低周期寿命和低初始库伦比效率 (ICE) 的阻碍.
- 这些局限性源于它们的复杂结构,显著的体积变化以及电化学循环过程中的界面问题.
研究的目的:
- 为高能量密度和成本效益的LIB提供合金类金属阳极的最新进展提供全面的审查.
- 总结了电池运行期间与金属阳极相关的故障机制和当前挑战.
- 突出结构和接口工程的策略,以提高阳极性能.
主要方法:
- 关于合金类型金属阳极的现有文献的综述.
- 在化/脱过程中的故障机制的分析.
- 结构设计和接口工程策略的识别和分类.
主要成果:
- 金属阳极表现出有前途的性能,但实际应用需要克服固有的挑战.
- 结构设计和界面工程,包括人工固体电解质界面 (SEI) 形成,合金改造和谷物精炼,显示出巨大的潜力.
- 了解和解决多尺度结构几何学,体积变化和界面现象至关重要.
结论:
- 合金类型金属阳极对下一代LIB有很大的前景,但进一步的研究是必不可少的.
- 需要结合电化学,材料科学,力学和接口科学的跨学科方法来充分发挥其潜力.
- 在材料设计和接口控制方面的持续努力对于提高能量密度和循环寿命至关重要.
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