High-performance composite elastomers with abundant heterostructures for enhanced electromagnetic wave absorption with ultrabroad bandwidth

Tianyi Hang; Jiajia Zheng; Yijie Zou; Shaohua Jiang; Yuchen Zhao; Zhaochun Li; Lijie Zhou; Xiping Li; Guoxiu Tong; Yiming Chen

doi:10.1016/j.jcis.2023.07.011

High-performance composite elastomers with abundant heterostructures for enhanced electromagnetic wave absorption with ultrabroad bandwidth

J Colloid Interface Sci. 2023 Nov 15;650(Pt A):437-445. doi: 10.1016/j.jcis.2023.07.011. Epub 2023 Jul 4.

Authors

Tianyi Hang¹, Jiajia Zheng¹, Yijie Zou¹, Shaohua Jiang², Yuchen Zhao³, Zhaochun Li⁴, Lijie Zhou¹, Xiping Li¹, Guoxiu Tong⁵, Yiming Chen⁶

Affiliations

¹ Key Laboratory of Urban Rail Transit Intelligent Operation and Maintenance Technology & Equipment of Zhejiang Province, College of Engineering, Zhejiang Normal University, Jinhua 321004, China.
² Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China.
³ College of Mechanical and Electronic Engineering, Nanjing Forestry University, Nanjing 210037, China.
⁴ College of Mechanical and Electronic Engineering, Nanjing Forestry University, Nanjing 210037, China. Electronic address: lzc.hn@163.com.
⁵ Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China.
⁶ Key Laboratory of Urban Rail Transit Intelligent Operation and Maintenance Technology & Equipment of Zhejiang Province, College of Engineering, Zhejiang Normal University, Jinhua 321004, China. Electronic address: yiming.chen@zjnu.edu.cn.

PMID: 37418894
DOI: 10.1016/j.jcis.2023.07.011

Abstract

Two-dimensional (2D) MXene has attracted vast attention in electromagnetic wave absorption (EWA), but there remains a contradiction between maintaining impedance matching and enhancing dielectric loss. Herein, the multi-scale architectures of ecoflex/2D MXene (Ti₃C₂T_x)@zero-dimensional CoNi sphere@one-dimensional carbon nanotube composite elastomers were successfully constructed by simple liquid-phase reduction and thermo-curing method. The binding between the hybrids as fillers and ecoflex as a matrix greatly enhanced the EWA capability of the obtained composite elastomer and improved its mechanical properties. Owing to its good impedance matching, abundant heterostructures, and synergistic electrical and magnetic losses, this elastomer exhibited an excellent minimum reflection loss of -67 dB at 9.46 GHz under a thickness of 2.98 mm. In addition, its ultrabroad effective absorption bandwidth reached 6.07 GHz. This achievement will pave the way for the exploitation of multi-dimensional heterostructures as high-performance electromagnetic absorbers with superior EWA ability.

Keywords: Elastomer; Electromagnetic wave absorption; Heterogeneous interfaces; Liquid phase reduction.