Environment-Stable CoxNiy Encapsulation in Stacked Porous Carbon Nanosheets for Enhanced Microwave Absorption
Xiaohui Liang, Zengming Man, Bin Quan, Jing Zheng, Weihua Gu, Zhu Zhang, Guangbin Ji
Abstract
Abstract Magnetic/dielectric@porous carbon composites, derived from metal–organic frameworks (MOFs) with adjustable composition ratio, have attracted wide attention due to their unique magnetoelectric properties. In addition, MOFs-derived porous carbon-based materials can meet the needs of lightweight feature. This paper reports a simple process for synthesizing stacked Co x Ni y @C nanosheets derived from Co x Ni y -MOFs nanosheets with multiple interfaces, which is good to the microwave response. The Co x Ni y @C with controllable composition can be obtained by adjusting the ratio of Co 2+ and Ni 2+ . It is supposed that the increased Co content is benefit to the dielectric and magnetic loss. Additionally, the bandwidth of CoNi@C nanosheets can take up almost the whole Ku band. Moreover, this composite has better environmental stability in air, which characteristic provides a sustainable potential for the practical application.