Huang Baiying, Zhang Yuling, Zhong Hua, Wu Yongbo, Lin Xiaoming, Xu Weiqin, Ma Guozheng
Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, School of Chemistry, South China Normal University, Guangzhou 510006, China.
Key Laboratory of Atomic and Subatomic Structure and Quantum Control (Ministry of Education), Guangdong Basic Research Center of Excellence for Structure and Fundamental Interactions of Matter, School of Physics, South China Normal University, Guangzhou 510006, China.
Inorg Chem. 2024 Jul 1;63(26):12281-12289. doi: 10.1021/acs.inorgchem.4c01680. Epub 2024 Jun 20.
The synergistic effect between multicomponent electrode materials often makes them have better lithium storage performance than single-component electrode materials. Therefore, to enhance surface reaction kinetics and encourage electron transfer, using multicomponent anode materials is a useful tactic for achieving high lithium-ion battery performance. In this article, ZnS/ZnO composites were synthesized by solvothermal sulfidation and calcination, with the utilization of metal-organic frameworks acting as sacrificial templates. From the point of material design, both ZnS and ZnO have high theoretical specific capacities, and the synergistic effect of ZnS and ZnO can promote charge transport. From the perspective of electrode engineering, the loose porous carbon skeleton that results from the calcination of metal-organic frameworks can enhance composite material conductivity as well as full electrolyte penetration and the area of contact between the electrolyte and active material, all of which are beneficial to enhancing lithium storage performance. As expected, ZnS/ZnO anode materials displayed remarkably high specific capacities and outstanding performance at different rates. Combining material design and electrode engineering, this paper provides another idea for preparing anode materials with excellent lithium storage properties.
多组分电极材料之间的协同效应通常使它们具有比单组分电极材料更好的锂存储性能。因此，为了增强表面反应动力学并促进电子转移，使用多组分负极材料是实现高锂离子电池性能的一种有效策略。在本文中，以金属有机框架作为牺牲模板，通过溶剂热硫化和煅烧合成了ZnS/ZnO复合材料。从材料设计的角度来看，ZnS和ZnO都具有较高的理论比容量，并且ZnS和ZnO的协同效应可以促进电荷传输。从电极工程的角度来看，金属有机框架煅烧后形成的疏松多孔碳骨架可以提高复合材料的导电性，以及促进全电解质渗透和电解质与活性材料之间的接触面积，所有这些都有利于提高锂存储性能。正如预期的那样，ZnS/ZnO负极材料在不同倍率下均表现出非常高的比容量和出色的性能。结合材料设计和电极工程，本文为制备具有优异锂存储性能的负极材料提供了另一种思路。
