Laser scribing of Ag-decorated graphene for high-performance and flexible heaters

doi:10.1016/j.jtice.2021.02.011

淡江大學機構典藏 > 工學院 > 化學工程與材料工程學系暨研究所 > 期刊論文 > Item 987654321/120168

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题名:	Laser scribing of Ag-decorated graphene for high-performance and flexible heaters
作者:	Cho, Er-Chieh;Cai-Wan, Chang-Jian;Huang, Jen-Hsien;Wu, Rudder T.;Lu, Cheng-Zhang;Lee, Kuen-Chan;Weng, Huei Chu;Hsu, Shih-Chieh
关键词:	Graphene;Electrothermal heater;Laser;Polyimide;Flexibility
日期:	2021-02-19
上传时间:	2021-03-12 12:10:56 (UTC+8)
摘要:	In this article, Ag nanoparticle decorated graphene-based film heaters are fabricated using a CO2 infrared laser writing technology. In this process, we use the commercial polyimide (PI) as carbon sources which can be directly converted into graphene during the laser irradiation. To prepare the Ag decorated graphene, the PI films are modified with KOH into potassium polyamate and incorporation of Ag+ ions through subsequent ion exchange prior to the laser irradiation. While the laser is irradiating on silvered PI, the temperature of the irradiated silvered PI increases in a flash leading to the reduction of Ag+ ions on the PI derived graphene (PDG) surface. The resultant Ag-decorated PDG (Ag-PDG) composites reveal an enhanced electric conductivity (16.2 Ω/sq.) with excellent mechanical properties. The flexible heaters constructed from the Ag-PDG film also show remarkable electrothermal performance in terms of saturated temperature (Ts, 248.3 °C), heating efficiency (142.8 °C cm2/W), response time (2.14 s) and durability with a small temperature deviation (1.3 °C) after 2000 bending cycles.
關聯:	Journal of the Taiwan Institute of Chemical Engineers 119, p.224-231
DOI:	10.1016/j.jtice.2021.02.011
显示于类别:	[化學工程與材料工程學系暨研究所] 期刊論文

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