A biocompatible implant electrode capable of operating in body fluids for energy storage devices

Ji Su Chae, Nam Su Heo, Cheol Hwan Kwak, Wan Seob Cho, Geun Hee Seol, Won Sub Yoon, Hyun Kyung Kim, Derek John Fray, A. T Ezhil Vilian, Yong Kyu Han, Yun Suk Huh, Kwang Chul Roh

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Implantable electronic medical devices (IEMDs) can potentially be used to solve various clinical problems including the monitoring of chronic diseases and electro-organ transplantation. Several recently introduced techniques based on implantable devices that exploit novel metal- or carbon-based hybrid materials are biocompatible owing to their encapsulation in nontoxic polymers. However, such techniques limit the correct functioning of implantable devices, resulting in frequent replacement, difficult miniaturization, and inflammatory side effects in the body. Here, we describe a new technique for application to IEMDs that is capable of providing energy storage using the natural ions of body fluids as electrolytes in a supercapacitor (or ultracapacitor). The system is constructed with a solar cell for energy harvesting and a supercapacitor for energy storage. We assembled IEMDs with two biocompatible electrodes, specifically, MnO2 nanoparticles affixed to multi-walled carbon nanotubes as the positive electrodes and phosphidated activated carbon as the negative electrodes. From the obtained result, this work can be further extended to the use of rats. This technique avoids the problems of performance degradation and toxicity that normally limits the reaction that is permissible in extracellular fluid. We present this concept schematically. The two biocompatible electrodes were successfully implanted into the subcutaneous layer of a rat's skin with both electrodes showing stable performance in use as parts of a supercapacitor. These findings establish a platform for potential biocompatible materials for implantable energy storage devices.

Original languageEnglish
Pages (from-to)86-92
Number of pages7
JournalNano Energy
Volume34
DOIs
Publication statusPublished - 2017 Apr 1

Fingerprint

Body fluids
Energy storage
Electronic medical equipment
Electrodes
Biocompatible Materials
Rats
Transplantation (surgical)
Carbon Nanotubes
Energy harvesting
Hybrid materials
Encapsulation
Biomaterials
Activated carbon
Electrolytes
Toxicity
Carbon nanotubes
Skin
Solar cells
Polymers
Carbon

Keywords

  • Biocompatible materials
  • Body fluid
  • Energy storage
  • Implantable device
  • Ultracapacitor

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)
  • Electrical and Electronic Engineering

Cite this

A biocompatible implant electrode capable of operating in body fluids for energy storage devices. / Chae, Ji Su; Heo, Nam Su; Kwak, Cheol Hwan; Cho, Wan Seob; Seol, Geun Hee; Yoon, Won Sub; Kim, Hyun Kyung; Fray, Derek John; Vilian, A. T Ezhil; Han, Yong Kyu; Huh, Yun Suk; Roh, Kwang Chul.

In: Nano Energy, Vol. 34, 01.04.2017, p. 86-92.

Research output: Contribution to journalArticle

Chae, JS, Heo, NS, Kwak, CH, Cho, WS, Seol, GH, Yoon, WS, Kim, HK, Fray, DJ, Vilian, ATE, Han, YK, Huh, YS & Roh, KC 2017, 'A biocompatible implant electrode capable of operating in body fluids for energy storage devices', Nano Energy, vol. 34, pp. 86-92. https://doi.org/10.1016/j.nanoen.2017.02.018
Chae, Ji Su ; Heo, Nam Su ; Kwak, Cheol Hwan ; Cho, Wan Seob ; Seol, Geun Hee ; Yoon, Won Sub ; Kim, Hyun Kyung ; Fray, Derek John ; Vilian, A. T Ezhil ; Han, Yong Kyu ; Huh, Yun Suk ; Roh, Kwang Chul. / A biocompatible implant electrode capable of operating in body fluids for energy storage devices. In: Nano Energy. 2017 ; Vol. 34. pp. 86-92.
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