As a type of device for the storage and stable supply of clean energy, secondary batteries have been widely studied, and one of their most important components is their cathode material. However, cathode materials are associated with challenges such as volume expansion, hydrogen fluoride corrosion, phase transitions and low conductivity. In addition to intrinsic modifications, binders demonstrate significant potential to enhance the electrochemical performance of cathodes. Nevertheless, despite their controllability, low cost and non-disruptive effect on the inherent structure of the active particles, there is a lack of comprehensive guidance on selecting and designing appropriate binders for cathode materials. Accordingly, this review comprehensively summarizes the cathode failure mechanism of various secondary battery systems including lithium-ion batteries, sodium-ion batteries, S-based batteries and other secondary battery systems. Based on this, the function and effect of binders are evaluated and the corresponding binder design strategies are analyzed and categorized into two classes of common issues and specific issues, providing a clear framework for designing novel binders for cathodes. Finally, crucial characteristics and prospects of advanced multifunctional cathode binders are discussed. This review can also guide attention toward the crucial role of binders in emerging battery systems and future potential systems.

中文翻译：

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先进二次电池正极材料的粘合剂设计策略


二次电池作为一种存储和稳定供应清洁能源的装置已被广泛研究，而其最重要的组成部分之一就是其正极材料。然而，正极材料面临体积膨胀、氟化氢腐蚀、相变和低电导率等挑战。除了固有改性之外，粘合剂还表现出增强阴极电化学性能的巨大潜力。然而，尽管它们具有可控性、低成本和对活性颗粒固有结构无破坏性的影响，但在选择和设计合适的正极材料粘合剂方面缺乏全面的指导。因此，本文全面总结了包括锂离子电池、钠离子电池、S基电池和其他二次电池系统在内的各种二次电池系统的正极失效机理。在此基础上，评估了粘结剂的功能和效果，并分析了相应的粘结剂设计策略，并将其分为常见问题和具体问题两类，为设计新型正极粘结剂提供了清晰的框架。最后，讨论了先进多功能正极粘合剂的关键特性和前景。该综述还可以引导人们关注粘合剂在新兴电池系统和未来潜在系统中的关键作用。