Guo Wei, Fu Yongzhu
College of Chemistry, Zhengzhou University, 100 Science Avenue, Zhengzhou, 450001, P. R. China.
Chemistry. 2020 Oct 21;26(59):13322-13331. doi: 10.1002/chem.202000878. Epub 2020 Sep 16.
Sulfur (S) and selenium (Se) have been considered as promising high capacity cathode materials for rechargeable batteries. They have differences in their physical properties (e.g., electronic conductivity) but the same number of electrons in their outermost shells, which leads to similarity in their electrochemical behavior in batteries. In recent years, some efforts have been taken to combine them in electrodes in the hope of improved battery performance. The S-Se bonds of these electrode materials lead to unusual properties and intriguing electrochemical behavior, which have attracted increasing interest. In this Minireview, electrode materials containing S-Se bonds are summarized, including inorganic S Se solid solutions, organic compounds, and organic-inorganic hybrid materials. Our understanding in these materials is still premature, but they have shown unique properties to be electrode materials. We hope this Minireview could provide a new insight into the design, synthesis, and understanding of these materials, which could enable high energy density rechargeable batteries.
硫（S）和硒（Se）被认为是用于可充电电池的很有前景的高容量阴极材料。它们在物理性质（如电子导电性）上存在差异，但最外层电子数相同，这导致它们在电池中的电化学行为具有相似性。近年来，人们已做出一些努力将它们结合在电极中，以期改善电池性能。这些电极材料的S-Se键导致了不同寻常的性质和引人关注的电化学行为，这已引起越来越多的兴趣。在这篇小型综述中，对含S-Se键的电极材料进行了总结，包括无机S-Se固溶体、有机化合物以及有机-无机杂化材料。我们对这些材料的认识仍不成熟，但它们已展现出作为电极材料的独特性质。我们希望这篇小型综述能为这些材料的设计、合成及理解提供新的见解，从而实现高能量密度的可充电电池。
