Flexible graphene electrothermal films made from electrochemically exfoliated graphite

Li Chang; Xu Yi-Tao; Zhao BoJiang LiChen Shi-GuoXu Jian-BinFu Xian-ZhuSun RongWong Ching-Ping

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Flexible graphene electrothermal films made from electrochemically exfoliated graphite

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Graphene nanosheets are facilely prepared by electrochemical exfoliation of graphite in sodium tungstate aqueous solution. Through a filtration-transfer procedure and followed by heat treatment, the graphene nanosheets are deposited on the polyethylene terephthalate substrate to form electrothermal films. The graphene electrothermal films exhibit low square resistance of 159 Omega/sq, high in-plane thermal conductivity of 658 W/m/K, and excellent heat propagation with uniform temperature distribution. The steady-state temperature of the films increases from 32 to 139 A degrees C as the applied voltage increases from 5 to 30 V. The electrothermal response of the graphene films is as fast as < 20 s. The graphene film heaters also display good flexibility. Even after bending 100 times, the graphene film heaters still exhibit almost the same electrothermal performance.

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《Journal of Materials Science》 |2016年第2期|1043-1051|共9页
作者
Li Chang; Xu Yi-Tao; Zhao BoJiang LiChen Shi-GuoXu Jian-BinFu Xian-ZhuSun RongWong Ching-Ping;
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作者单位

Chinese Acad Sci, Shenzhen Inst Adv Technol, Shenzhen High Dens Elect Packaging & Device Assem, Shenzhen 518055, Peoples R China;

Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA;

Shenzhen Univ, Coll Mat Sci & Engn, Shenzhen Key Lab Special Funct Mat, Shenzhen 518060, Peoples R ChinaChinese Univ Hong Kong, Dept Elect Engn, Hong Kong, Hong Kong, Peoples R China;

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正文语种英语
中图分类工程材料学;
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Flexible graphene electrothermal films made from electrochemically exfoliated graphite

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