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Biomolecule based fiber supercapacitor for implantable device

Title
Biomolecule based fiber supercapacitor for implantable device
Author
김선정
Keywords
Supercapacitor; Fiber; Implant; In vivo; Ferritin
Issue Date
2018-03
Publisher
ELSEVIER SCIENCE BV
Citation
NANO ENERGY, v. 47, page. 385-392
Abstract
With the growing demand for electronic medical devices for healthcare applications, we studied an implantable supercapacitor that can operate in an implantable electronic device. Here, we report a flexible implantable fiber supercapacitor for an in vivo energy storage device. The fiber supercapacitor has a high flexibility and a high potential to be applied in an implant device because the fiber can be implanted in the blood vessel and the wound can be stitched with the fiber-like suture. The fiber electrodes were fabricated in a biscrolling process that trapped poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)/ferritin nanoclusters within multiwalled carbon nanotube (MWNT) sheets that provide mechanical strength and electrical conductivity. In addition, the supercapacitor is biocompatible because the MWNT sheets are coated with biocompatible materials such as PEDOT: PSS and ferritin. The areal capacitance of the PEDOT:PSS/ferritin/MWNT fiber supercapacitor was 32.9 mF/cm(2) in a phosphate buffered saline solution, and the areal energy density was 0.82 mu Wh/cm(2); these values are 52 times higher than that of the guest-free MWNT yarn. The supercapacitor operated well in a mouse and exhibited excellent biocompatibility; the capacitance was maintained above 90% in the mouse after eight days.
URI
https://www.sciencedirect.com/science/article/pii/S221128551830140X?via%3Dihubhttp://repository.hanyang.ac.kr/handle/20.500.11754/117961
ISSN
2211-2855; 2211-3282
DOI
10.1016/j.nanoen.2018.03.011
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRICAL AND BIOMEDICAL ENGINEERING(전기·생체공학부) > Articles
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