As a highly promising electrode material for future batteries, silicon (Si) is considered an alternative anode, which has garnered significant attention due to its exceptional theoretical gravimetric capacity, low working potential, and abundant natural resources. Nonetheless, the real-world usage of silicon anodes is hampered by huge challenges such as drastic volumetric expansion, poor structural interfacial stability, and unstable solid electrolyte interface. To tackle these challenges, significant endeavors have been increasingly channeled into the creation of novel binders. Adhesive, as an element of the silicon electrode, is crucial for preserving structural stability. Therefore, designing multifunctional binder stress dissipation networks is one of the important strategies to overcome the challenges of commercializing silicon anodes. This paper reviews recent advances in silicon anode binders and explores the structural-functional properties of these binders. Binders can be classified based on their structure into linear, branched, three-dimensional networks, and multiconjugated. The functional properties of different structural design strategies are discussed in depth, focusing on mechanical and electrical conductivity. Special attention is given to the design strategy of multifunctional stress-release binder networks. Finally, the article addresses the challenges and future directions of silicon anode binder research and offers suggestions for the continued advancement of high-performance silicon anode lithium-ion batteries.

中文翻译：

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深入了解锂离子电池用硅基负极粘结剂的结构-性能-功能关系


硅 （Si） 作为未来电池极具前景的电极材料，被认为是一种替代负极，由于其卓越的理论重量容量、低工作电位和丰富的自然资源而受到广泛关注。尽管如此，硅负极的实际使用受到巨大挑战的阻碍，例如剧烈的体积膨胀、结构界面稳定性差和不稳定的固体电解质界面。为了应对这些挑战，人们越来越多地投入到创造新型粘合剂上。胶粘剂作为硅电极的一种元素，对于保持结构稳定性至关重要。因此，设计多功能粘结剂应力耗散网络是克服硅负极商业化挑战的重要策略之一。本文综述了硅负极粘结剂的最新进展，并探讨了这些粘结剂的结构功能特性。结合剂可以根据其结构分为线性、支链、三维网络和多共轭。深入讨论了不同结构设计策略的功能特性，重点介绍了机械和导电性。特别关注多功能应力释放粘合剂网络的设计策略。最后，本文讨论了硅负极粘结剂研究的挑战和未来方向，并为高性能硅负极锂离子电池的持续发展提供了建议。