Lu Jianing, Zhang Zhi, Zheng Yifan, Gao Yihua
School of Physics & Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan, 430074, P. R. China.
Adv Mater. 2023 Sep;35(38):e2300359. doi: 10.1002/adma.202300359. Epub 2023 Jul 27.
Sodium-ion batteries (SIBs) have attracted tremendous attentions in recent years due to the abundance and wide distribution of Na resource on the earth. However, SIBs still face the critical issues of low energy density and unsatisfactory cyclic stability at present. The enhancement of electrochemical performance of SIBs depends on comprehensive and precise understanding of the underlying sodium storage mechanism. Although extensive transmission electron microscopy (TEM) investigations have been performed to reveal the sodium storage property and mechanism of SIBs, a dedicated review on the in situ TEM investigations of SIBs has not been reported. In this review, recent progress in the in situ TEM investigations on the morphological, structural, and chemical evolutions of cathode materials, anode materials, and solid-electrolyte interface during the sodium storage of SIBs is comprehensively summarized. The detailed relationship between structure/composition of electrode materials and electrochemical performance of SIBs has been clarified. This review aims to provide insights into the effective selection and rational design of advanced electrode materials for high-performance SIBs.
近年来，钠离子电池（SIBs）因其在地球上钠资源的丰富性和广泛分布而备受关注。然而，目前钠离子电池仍面临能量密度低和循环稳定性不理想等关键问题。钠离子电池电化学性能的提升取决于对其潜在储钠机制的全面而精确的理解。尽管已经进行了广泛的透射电子显微镜（TEM）研究以揭示钠离子电池的储钠性能和机制，但尚未有关于钠离子电池原位TEM研究的专门综述报道。在本综述中，全面总结了近年来在原位TEM研究中，钠离子电池在储钠过程中正极材料、负极材料和固体电解质界面的形态、结构和化学演变方面的进展。阐明了电极材料的结构/组成与钠离子电池电化学性能之间的详细关系。本综述旨在为高性能钠离子电池先进电极材料的有效选择和合理设计提供见解。
