Biomorphic porous graphitic carbon for electromagnetic interference shielding

被引：76

作者：

Liu, Qinglei ^{[1
]}

Gu, Jiajun ^{[1
]}

Zhang, Wang ^{[1
]}

Miyamoto, Yoshinari ^{[2
]}

Chen, Zhixin ^{[3
]}

Zhang, Di ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200030, Peoples R China

[2] Osaka Univ, Joining & Welding Res Inst, Suita, Osaka 565, Japan

[3] Univ Wollongong, Fac Engn, Wollongong, NSW 2522, Australia

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2012年 / 22卷 / 39期

基金：

高等学校博士学科点专项科研基金; 中国国家自然科学基金;

关键词：

CATALYTIC GRAPHITIZATION; MESOPOROUS CARBONS; COMPOSITES; FOAMS; NANOCOMPOSITES; PERFORMANCE;

D O I：

10.1039/c2jm34590k

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Using a kind of plant biomass (coconut shell) as template and carbon precursor, we prepare biomorphic porous carbon materials for electromagnetic interference shielding application. The carbon frameworks of the porous carbon materials are modified by in situ formation of graphitic nanostructures in a catalytic graphitization process, leading to well-tailored electrical conductivity of the resultant materials. The modified porous carbon materials exhibit shielding effectiveness of 40 dB over the X-band frequency, and the shielding by absorption is as high as 91%, indicating an absorption-dominant shielding mechanism. The high absorption contribution is attributed to the coupled effects of the biomorphic porous structures and graphitic nanostructures of the porous graphitic carbon.

引用

页码：21183 / 21188

页数：6

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