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基于结构设计和修改的离子电池中极体积扩张的抑制策略:一篇评论

Yu Shang¹, Haibo Li¹, Ting Ma¹

¹School of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China.

ACS applied materials & interfaces

|May 19, 2025

概括

阳极为离子电池 (LIB) 提供高容量,但受到体积膨胀的影响. 本综述探讨了诸如多孔结构和复合材料等策略,以提高阳极稳定性和电池周期寿命.

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
电池技术电池技术

背景情况:

阳极对高容量离子电池 (LIB) 是一个有前途的产品.
循环期间的体积膨胀会导致固体电解质间相 (SEI) 失效,并限制电池的寿命.
了解膨胀机制对于开发稳定的阳极至关重要.

研究的目的:

综合审查基于Si的阳极改造和结构设计的最新进展.
讨论扩展框架结构及其对电池性能的影响.
为了突出抑制阳极体积膨胀的策略.

主要方法:

基于Si的阳极改造和结构设计策略的分类.
深入讨论扩大规模的框架结构.
重点是复合结构 (如Si/碳,Si/MXene) 和它们的协同效应.

主要成果:

通过合金烧结重建的多孔单晶球有效抑制体积膨胀.
使用石墨烯或MXene的复合结构通过抵消内部应力来抑制SEI碎片化.
特殊的纳米形状结构有助于长期循环期间的阳极稳定性.

结论:

结构修改和复合设计是克服阳极体积扩张的关键.
合金烧结,多孔结构和二维材料集成为阳极稳定提供了有效的策略.
本综述为推进实用LIB应用的Si基阳极提供了洞察力.

关键词:

离子电池是一种离子电池.阳极是一种阳极.结构设计结构设计结构设计卷积扩张卷积扩张

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