Nano-Micro Letters

Environment-Stable CoxNiy Encapsulation in Stacked Porous Carbon Nanosheets for Enhanced Microwave Absorption

Xiaohui Liang1, Zengming Man1, Bin Quan1, Jing Zheng2, Weihua Gu1, Zhu Zhang1, Guangbin Ji1, *

Abstract
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Nano-Micro Lett. (2020) 12: 102

First Online: 28 April 2020 (Article)

DOI:10.1007/s40820-020-00432-2

*Corresponding author. E-mail: gbji@nuaa.edu.cn (Guangbin Ji)

 

Abstract

 


Toc

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 CoxNiy@C nanosheets derived from CoxNiy-MOFs nanosheets with multiple interfaces, which is good to the microwave response. The CoxNiy@C with controllable composition can be obtained by adjusting the ratio of Co2+ and Ni2+. 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.


 

Keywords

MOFs; CoxNiy@C nanosheets; Multiple interfaces; Microwave absorption; Environmental stability

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