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Fabrication and Assessment of Highly Flexible and Biocompatible Supercapacitor with Iridium Oxide Coated Gold Nanowires on Polyamide

Graduate #18
Discipline: Biological Sciences
Subcategory: Materials Science

Apryl Fitz - Norfolk State University


Supercapacitors are fast energy storage devices utilized in the study of conducting rapid charge and discharge cycles. These supercapacitors give purpose to this research study where we together focus on the development, and evaluate a new type of flexible and biocompatible supercapacitor which are fabricated with iridium oxide coated gold nanowire on polyimide material. Both iridium oxide and gold are respectable biocompatible materials, while iridium oxide have a higher charge injection rate amongst all metal oxides. Electrostatic double-layer capacitance has a high carbon material area bases on electrical charge storage. While the electrochemical pseudocapacitance has a high total capacitance, rechargeable ability, as well as, redox process at the surface of high-area electrode material areas. Supercapacitors are made with biocompatible electrodes and electrolyte replacing the traditional batteries used in medical devices which gives us the ability to utilize biofluid as an electrolyte and biocompatible electrodes for implantable supercapacitors. These supercapacitors normally have low voltage limits due to the high charge injection rate, which is also an appropriate aspect for implantable medical devices. Higher quality electrochemical pseudo capacitance has a larger surface area, iridium oxide is electrochemically deposited on the vertically grown gold nanowires. A flexible substrate material, polyimide is utilized giving supercapacitor flexibility. Prepared 10% organic ballistic gelatin has a bloom (density) greater than 250 which is similar to living soft skin tissue for penetration testing. This gelatin is already prepared, reducing the probability for error and can be melted down and remolded for reused, which is utilized as a biocompatible electrolyte. To examine the sensors performance, charge injection rates of several different currents are measured at an electrochemical station. This research will represent the iridium oxide coated gold nanowire on polyimide and gelatin polymer electrolyte as a promising supercapacitor for implantable medical devices.

Funder Acknowledgement(s): This work is supported by the NSF-CREST Grant number HRD 1547771 and NSF-CREST Grant number HRD 1036494.

Faculty Advisor: Dr. Yoon , Seonhye Han, Hyoon@nsu.edu

Role: Supercompacitor and gelatin fabrication.

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This material is based upon work supported by the National Science Foundation (NSF) under Grant No. DUE-1930047. Any opinions, findings, interpretations, conclusions or recommendations expressed in this material are those of its authors and do not represent the views of the AAAS Board of Directors, the Council of AAAS, AAAS’ membership or the National Science Foundation.

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