School of Science, China University of Geosciences, Beijing 100083, China.
Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China.
ACS Appl Mater Interfaces. 2023 Mar 8;15(9):11906-11913. doi: 10.1021/acsami.2c23205. Epub 2023 Feb 26.
We synthesize and characterize a rechargeable aluminum battery cathode material composed of heterostructured CoSe/ZnSe embedded in a hollow carbon matrix. This heterostructure is synthesized from a metal-organic framework composite, in which ZIF-8 is grown on the surface of ZIF-67 cube. Both experimental and theoretical studies indicate that the internal electric field across the heterostructure interface between CoSe and ZnSe promotes the fast transport of electron and Al-ion diffusion. As a result, the heterostructured CoSe/ZnSe demonstrates superior specific capacity and cycle stability compared to the single-phase CoSe and ZnSe cathode materials.
我们合成并表征了一种由嵌入中空碳基质中的 CoSe/ZnSe 异质结构组成的可充电铝电池正极材料。这种异质结构是由金属有机骨架复合材料合成的，其中 ZIF-8 生长在 ZIF-67 立方体的表面。实验和理论研究都表明，CoSe 和 ZnSe 异质结构界面内的内电场促进了电子的快速传输和 Al 离子的扩散。因此，与单相 CoSe 和 ZnSe 正极材料相比，CoSe/ZnSe 异质结构表现出更高的比容量和循环稳定性。
