Electrochemical Behavior Study of Flower-Shaped Bimetal Organic Frameworks with Graphene Oxide for Cathode of Lithium Sulfur Batteries

摘要

We studied that hybrid material of two metal component organic framework (Bimetal MOF), containing graphene oxide (GO) as a sulfur immobilizing host was successfully synthesized by hydrothermal reaction. To prove effect of MOF, only GO and ZIF-67 (Zeolitic imidazolate framework) composites were prepared as comparative samples. Field emission scanning electron microscopy (FE-SEM), and Fourier Transform Infra-Red Spectroscopy (FT-IR) were conducted to determine the morphology and micro-structure of the composite. Electrochemical properties were characterized by cyclic voltammetry (CV) and galvanostatic charge discharge tests were performed by battery tester. Based on these electrochemical experiments, Bimetal-MOF composites showed the better performance than the other samples.