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author:

Wei, Zijian (Wei, Zijian.) [1] | Cheng, Yu (Cheng, Yu.) [2] | Hu, Xuxu (Hu, Xuxu.) [3] | Meng, Yanyan (Meng, Yanyan.) [4] | Zhan, Yanhu (Zhan, Yanhu.) [5] | Li, Yuchao (Li, Yuchao.) [6] | Xia, Hesheng (Xia, Hesheng.) [7] | Jiang, Xiancai (Jiang, Xiancai.) [8] (Scholars:江献财) | Chen, Zhenming (Chen, Zhenming.) [9]

Indexed by:

EI Scopus SCIE

Abstract:

Cellulose papers (CPs) possess a pore structure, rendering them ideal precursors for carbon scaffolds because of their renewability. However, achieving a tradeoff between high electromagnetic shielding effectiveness and low reflection coefficient poses a tremendous challenge for CP-based carbon scaffolds. To meet the challenge, leveraging the synergistic effect of gravity and evaporation dynamics, laminar CP-based carbon scaffolds with a bidirectional gradient distribution of Fe3O4 nanoparticles were fabricated via immersion, drying, and carbonization processes. The resulting carbon scaffold, owing to the bidirectional gradient structure of magnetic nanoparticles and unique laminar arrangement, exhibited excellent in-plane electrical conductivity (96.3 S/m), superior electromagnetic shielding efficiency (1805.9 dB/cm(2) g), low reflection coefficients (0.23), and a high green index (gs, 3.38), suggesting its green shielding capabilities. Furthermore, the laminar structure conferred upon the resultant carbon scaffold a surprisingly anisotropic thermal conductivity, with an in-plane thermal conductivity of 1.73 W/m K compared to a through-plane value of only 0.07 W/m K, confirming the integration of thermal insulation and thermal management functionalities. These green electromagnetic interference shielding materials, coupled with thermal insulation and thermal management properties, hold promising prospects for applications in sensitive devices.

Keyword:

Bi-directional gradient Cellulose Conductive and magnetic scaffold Green EMI shielding Thermal insulation Thermal management

Community:

  • [ 1 ] [Wei, Zijian]Liaocheng Univ, Sch Mat Sci & Engn, Liaocheng 252000, Peoples R China
  • [ 2 ] [Hu, Xuxu]Liaocheng Univ, Sch Mat Sci & Engn, Liaocheng 252000, Peoples R China
  • [ 3 ] [Meng, Yanyan]Liaocheng Univ, Sch Mat Sci & Engn, Liaocheng 252000, Peoples R China
  • [ 4 ] [Zhan, Yanhu]Liaocheng Univ, Sch Mat Sci & Engn, Liaocheng 252000, Peoples R China
  • [ 5 ] [Li, Yuchao]Liaocheng Univ, Sch Mat Sci & Engn, Liaocheng 252000, Peoples R China
  • [ 6 ] [Cheng, Yu]Sichuan Univ, Polymer Res Inst, State Key Lab Polymer Mat Engn, Chengdu 610065, Peoples R China
  • [ 7 ] [Xia, Hesheng]Sichuan Univ, Polymer Res Inst, State Key Lab Polymer Mat Engn, Chengdu 610065, Peoples R China
  • [ 8 ] [Jiang, Xiancai]Fuzhou Univ, Coll Chem Engn, Fuzhou 350108, Peoples R China
  • [ 9 ] [Chen, Zhenming]Hezhou Univ, Guangxi Key Lab Calcium Carbonate Resources Compre, Hezhou 542899, Peoples R China

Reprint 's Address:

  • [Zhan, Yanhu]Liaocheng Univ, Sch Mat Sci & Engn, Liaocheng 252000, Peoples R China;;[Xia, Hesheng]Sichuan Univ, Polymer Res Inst, State Key Lab Polymer Mat Engn, Chengdu 610065, Peoples R China;;

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Source :

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES

ISSN: 0141-8130

Year: 2024

Volume: 275

7 . 7 0 0

JCR@2023

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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