Journal
CARBON
Volume 155, Issue -, Pages 462-468Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2019.09.021
Keywords
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Funding
- National Natural Science Foundation of China [51803177, 51533008, 21325417, 51703194, 51603183]
- National Key R&D Program of China [2016YFA0200200]
- Fundamental Research Funds for the Central Universities [2017QNA4036]
- Hundred Talents Program of Zhejiang University [188020*194231701/113]
- key research and development plan of Zhejiang Province [2018C01049]
- China Postdoctoral Science Foundation [2017M620241]
- National Postdoctoral Program for Innovative Talents [BX201700209]
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The development of rapid and scalable techniques for thermally conductive film is useful for the improved function and efficiency of electronic devices. The commercially available carbon film that made from polyimide film by sequential carbonization and graphitization in electrical furnace is usually produced in an intermittent way, which inevitably decreases the manufacturing efficiency and increases energy consumption and production cost. Macroscopic graphene film is considered to be an ideal alternative of traditional carbon film due to its combined merits of high thermal conductivity and flexibility. Here, we report a rapid approach to continuously fabricate graphene film by Joule heating of chemically reduced graphene oxide film integrated with a high-throughput roll-to-roll process. The achieved graphene film holds excellent electrical of 4.2 x 10(5) S/m and thermal conductivity of 1285 +/- 20 W/mK. Moreover, the intensive Joule heating in a roll-to-roll manner is more time-saving, energy-efficient, and cost-effective than traditional heating method by electrical furnace. Such facial processing strategy offers new opportunities for the scaled-up manufacturing of large area graphene film with potential applications in the fields of thermal management, flexible electronics, and wearable devices. (C) 2019 Elsevier Ltd. All rights reserved.
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