Multifunctional phase change composites based on biomass/MXenederived hybrid scaffolds for excellent electromagnetic interference shielding and superior solar/electro-thermal energy storage

作     者：Yan Cao Ziheng Zeng Danyuan Huang Ying Chen Li Zhang Xinxin Sheng Yan Cao;Ziheng Zeng;Danyuan Huang;Ying Chen;Li Zhang;Xinxin Sheng

作者机构：Department of Polymeric Materials and EngineeringSchool of Materials and EnergyGuangdong University of TechnologyGuangzhou 510006China Guangdong Provincial Key Laboratory of Functional Soft Condensed MatterGuangdong University of TechnologyGuangzhou 510006China 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2022年第15卷第9期

页      面：8524-8535页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：the National Natural Science Foundation of China(No.U20A20299) Y.C.acknowledges the support from Guangdong Special Support Program(No.2017TX04N371) 

主　　题：MXene electromagnetic interference shielding phase change composites thermal energy management 

摘      要：With the rapid development of new generations of miniaturized,integrated,and high-power electronic devices,it is particularly important to develop advanced composite materials with efficient thermal management capability and excellent electromagnetic interference(EMI)shielding ***,an innovative biomass/MXene-derived conductive hybrid scaffold,cellulose nanocrystal(CNC)-konjac glucomannan(KGM)/MXene(CKM),was prepared by freeze-drying and thermal annealing,and then paraffin wax(PW)was encapsulated in CKM using vacuum impregnation method to obtain CNC-KGM/MXene@PW phase change composites(CKMPCCs).The results show that the obtained CKMPCCs possess considerable reusable stabilities,excellent EMI shielding properties,and thermal energy management *** them,the CKMPCC-6 with 2.3 wt.%MXene exhibits excellent solar-thermal and electro-thermal conversion *** addition,the EMI shielding effectiveness value is as high as 45.0 dB at 8.2–12.4 GHz and the corresponding melting enthalpy value is 215.7 J/g(relative enthalpy efficiency of 99.9%).In conclusion,the synthesized multifunctional phase change composites provide great potential for integrating outstanding EMI shielding and advanced thermal energy management applications.