Three-dimensional macroporous hybrid carbon aerogel with heterogeneous structure derived from MXene/cellulose aerogel for absorption-dominant electromagnetic interference shielding and excellent thermal insulation performance

• Published in: Journal of colloid and interface science Vol. 619; pp. 96 - 105
• Main Authors: Zong, Ze, Ren, Penggang, Guo, Zhengzheng, Wang, Jin, Chen, Zhengyan, Jin, Yanling, Ren, Fang
• Format: Journal Article
• Language: English
• Published: United States Elsevier Inc 01.08.2022
• Subjects: Absorption coefficient; Cellulose-derived carbon aerogel; Electromagnetic interference shielding; MXene; Thermal insulation; Electromagnetic interference shielding; Absorption coefficient; Cellulose-derived carbon aerogel; MXene; Thermal insulation
• ISSN: 0021-9797; 1095-7103
• DOI: 10.1016/j.jcis.2022.03.136

[Display omitted] The development of electromagnetic interference (EMI) shielding materials with excellent absorption coefficient (A) is vital to completely eliminate the pollution of the ever-increasing electromagnetic waves (EMWs). In this regard, a TiC/carbon hybrid aerogel, derived from MXene/cellulose aerogel, was successfully fabricated via freeze-drying and subsequent pyrolysis process. Profiting from the open, loose three-dimensional (3D) macro pores with sheet-like morphology and high porosity, as well as the rich heterogeneous interfaces between TiC and cellulose-derived carbon, the as-prepared hybrid carbon aerogel achieves ultra-efficient EMI shielding effectiveness of 72.9 dB in conjunction with a superior A value of 0.76 and low thermal conductivity. These properties endow the as-prepared aerogel with strong absorption-dominant ultra-efficient EMI shielding and thermal insulation performance to meet the complex practical requirements. This work provides a promising strategy for achieving ultra-efficient multifunctional EMI shielding performance and superior A simultaneously.