Manganese‐based cathode materials have garnered extensive interest because of their high capacity, superior energy density, and tunable crystal structures. Despite their cost‐effectiveness, challenges like Mn dissolution and gas evolution originating from the irreversible structural degradation pose risks to stability and prolonged electrochemical behaviors, ultimately constraining their practical applications and market prospects. While the material characteristics and redox mechanisms of Mn‐based cathodes are extensively investigated, a systematic iterative approach to material design that balances performance and application demands remains both necessary and urgent. Recent strategies for enhancing cathode performances emphasize the innovative introduction and customization of composite structures in Mn‐based cathode materials to address the challenges above. This review aims to provide a comprehensive understanding of composite‐structure construction methodologies and offers practical guidelines for effectively designing high‐stability Mn‐based composite‐structure cathode materials. This encompasses the classifications of composite scales, the discussions for the extent of composite‐structure construction inside and outside of the cathode grains, and an exploration of the development potential of these materials, especially for grid‐scale applications.

中文翻译：

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用于可持续电池的锰基复合结构正极材料


锰基正极材料因其高容量、卓越的能量密度和可调的晶体结构而引起了广泛的兴趣。尽管它们具有成本效益，但不可逆的结构降解引起的 Mn 溶解和气体析出等挑战对稳定性和长期电化学行为构成了风险，最终限制了它们的实际应用和市场前景。虽然对 Mn 基阴极的材料特性和氧化还原机制进行了广泛研究，但平衡性能和应用需求的系统迭代材料设计方法仍然是必要和紧迫的。最近提高阴极性能的策略强调在 Mn 基阴极材料中创新地引入和定制复合结构，以应对上述挑战。本综述旨在提供对复合材料结构构建方法的全面理解，并为有效设计高稳定性 Mn 基复合材料结构正极材料提供实用指南。这包括复合尺度的分类、对阴极晶粒内外复合结构结构构建程度的讨论，以及对这些材料的发展潜力的探索，特别是对于网格尺度应用。