한빛사논문
- 조회258
Yongwoo Jang[a],+, Taegyu Park[a],+, Eunyoung Kim[a], Jong Woo Park[a], Dong Yeop Lee[a], Seon Jeong Kim[a],*
[a] Jang Y, Park T, Kim E, Park JW, Lee DY, Prof. Kim SJ
Center for Self-powered Actuation and Department of Biomedical Engineering, Hanyang University, Seoul 04736, Korea.
+the authors contributed equally.
*Corresponding author
Abstract
The carbon nanotube (CNT) yarn supercapacitor has high potential for in vivo energy storage because it can be used in aqueous environments and stitched to inner parts of the body, such as blood vessels. The biocompatibility issue for frequently used pseudocapacitive materials, such as metal oxides, is controversial in the human body. Here, we report an implantable CNT yarn supercapacitor inspired by the cellular redox system. In all living cells, nicotinamide adenine dinucleotide (NAD) is a key redox biomolecule responsible for cellular energy transduction to produce adenosine triphosphate (ATP). Based on this redox system, CNT yarn electrodes were fabricated by inserting a twist in CNT sheets with electrochemically deposited NAD and benzoquinone for redox shuttling. Consequently, the NAD/BQ/CNT yarn electrodes exhibited the maximum area capacitance (55.73 mFcm −2 ) under physiological conditions, such as phosphate‐buffered saline and serum. In addition, the yarn electrodes showed a negligible loss of capacitance after 10,000 repeated charge/discharge cycles and deformation tests (bending/knotting). More importantly, NAD/BQ/CNT yarn electrodes implanted into the abdominal cavity of a rat’s kin exhibited the stable in vivo electrical performance of a supercapacitor. Therefore, these findings demonstrate a redox biomolecule‐applied platform for implantable energy storage devices.
논문정보
- Research article
- 2021년 02월 (BRIC 등록일 2021-12-07)
- 국내 연구진
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