揭示用于钠离子全电池的 NASICON 材料的结构特征,Carbon Energy

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揭示用于钠离子全电池的 NASICON 材料的结构特征
Carbon Energy ( IF 19.5 ) Pub Date : 2022-06-02 , DOI: 10.1002/cey2.222
Muhammad Tayyab Ahsan ₁ , Zeeshan Ali ₂ , Muhammad Usman ₁ , Yanglong Hou _{1,

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Affiliation

由于钠的低成本和高含量，钠离子电池 (SIB) 是替代锂离子电池以满足电力存储系统日益增长的需求的潜在候选者。近年来，钠超离子导体（NASICON）结构材料作为电极材料引起了人们的极大兴趣，因为它可以使 SIBs 用于电能存储智能电网的更安全和长期性能。这些材料具有坚固的三维骨架、高氧化还原电位、热稳定性和快速 Na ⁺-离子扩散机制。然而，NASICON 的固有电子电导率较低，这限制了电化学性能。本综述描述了 NASICON 的结构特征，以说明 SIB 的离子存储机制和电化学性能。NASICON晶体结构的细节，附属的Na ⁺描述了这些材料在钠离子半电池和全电池中的离子扩散机制、形态和电化学性能。除了作为电极材料的应用外，NASICONs 作为固体电解质的用途也在固态 SIBs 中得到了阐述。基于这些方面，我们在SIBs的商业化和克服NASICONs局限性的策略方面提供了更多的视角。因此，本综述有望为储能研究人员提供对NASICON材料的深入理解和结构特征知识，为SIBs的实用性提供新的途径。

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Unfolding the structural features of NASICON materials for sodium-ion full cells

Sodium-ion batteries (SIBs) are potential candidates for the replacement of lithium-ion batteries to meet the increasing demands of electrical storage systems due to the low cost and high abundance of sodium. Sodium superionic conductor (NASICON) structured materials have attracted enormous interest in recent years as electrode materials for safer and long-term performance of SIBs for electric energy storage smart grids. These materials have a three-dimensional robust framework, high redox potential, thermal stability, and a fast Na⁺-ion diffusion mechanism. However, NASICON has low intrinsic electronic conductivity, which limits the electrochemical performance. This review describes the structural features of NASICONs to illustrate the ion storage mechanism and electrochemical performance of SIBs. Details of the NASICON crystal structure, the affiliated Na⁺-ion diffusion mechanism, morphology, and electrochemical performance of these materials in sodium-ion half-cells as well as full cells are described. In addition to the application as electrode materials, the use of NASICONs as solid electrolytes is also elaborated in solid-state SIBs. Based on these aspects, we have provided more perspectives in terms of the commercialization of SIBs and strategies to overcome the limitations of NASICONs. Hence, this review is expected to provide the researchers of energy storage with an in-depth understanding of NASICON materials with the knowledge of structural features, which will provide a new avenue on the practicality of SIBs.

更新日期：2022-06-02

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