Journal
COMPOSITES COMMUNICATIONS
Volume 16, Issue -, Pages 79-83Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.coco.2019.09.002
Keywords
Graphene; Thermoelectrics; Wearable electron; Fiber generator
Categories
Funding
- National Natural Science Foundation of China [51762018, 51572117, 51863009]
- Innovation Driven 5511'' Project of Jiangxi Province [20165BCB18016]
- Natural Science Foundation of Jiangxi Province [20181ACB20010]
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Fiber-based thermoelectric (TE) generators have arose significant attention in recent years for portable energy supply devices. However, it is still a great challenge to fabricate integral p-n type connected graphene fibers (GFs) at present. Herein, we prepared p-type GFs by a simple process of chemical reduction. An integral p-n connected all-graphene fiber without additional adhesive was obtained with discontinuous doping with electron-donating polyethyleneimine ethoxylated (PEIE). The integral p-n connected GFs displayed a steady electrical conductivity, excellent flexibility and acceptable tensile properties. Furthermore, a flexible wearable TE generator was fabricated through integrating as-prepared integral p-n connected GFs into flexible poly-dimethylsiloxane (PDMS) substrate, exhibiting a stable output power at the temperature difference between human body and air temperature, which may provide a good reference for fiber-based wearable TE energy supply.
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