Use of bioelectrode containing DNA-wrapped single-walled carbon nanotubes for enzyme-based biofuel cell
- Authors
- Lee, Jin Young; Shin, Hyun Yong; Kang, Seong Woo; Park, Chulhwan; Kim, Seung Wook
- Issue Date
- 1-2월-2010
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Carbon nanotube; Electron transfer; Enzyme-based biofuel cell; Glucose oxidase; Laccase; Glucose
- Citation
- JOURNAL OF POWER SOURCES, v.195, no.3, pp.750 - 755
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF POWER SOURCES
- Volume
- 195
- Number
- 3
- Start Page
- 750
- End Page
- 755
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/117008
- DOI
- 10.1016/j.jpowsour.2009.08.050
- ISSN
- 0378-7753
- Abstract
- Biofuel cells that utilize enzymes are attractive alternatives to metal catalyst-based cells because they are environmentally friendly, renewable and operate well at room temperature. Glucose oxidase (GOD)/laccase based biofuel cells have been evaluated to determine if they are useful power supplies that can be implanted in vivo. However, the usefulness of GOD/laccase systems is limited because they produce low level of electrical power. The effects of DNA-wrapped single-wall carbon nanotubes (SWNTs) on the electrical properties of a fuel cell are evaluated under ambient conditions in an attempt to increase the electrical power of an enzyme-based biofuel cell (EFC). The anode (GOD) and cathode (laccase) system in the EFC is composed of gold electrodes that are modified with DNA-wrapped SWNTs. Glucose (for anode) and O-2 (for cathode) are used as the substrates. The anodic electrical properties increase significantly with a bioelectrode that contains DNA-wrapped SWNTs as an electron-transfer mediator. Furthermore, the modified bioelectrode results in increased activities and stabilities of GOD and laccase, which enhance power production (442 mu W cm(-2) at 0.46V) compared with a basic EFC. (C) 2009 Elsevier B.V. All rights reserved.
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