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Fabrication and Characterization of Enzyme Electrode for Lactate Fuel Cell

Authors
Zhang, YanQingKim, Chang-Joon
Issue Date
Aug-2021
Publisher
한국화학공학회
Keywords
Lactate fuel cell; Carbon paper; Gold nanoparticles; Lactate oxidase; Bilirubin oxidase
Citation
Korean Chemical Engineering Research(HWAHAK KONGHAK), v.59, no.3, pp 373 - 378
Pages
6
Indexed
SCOPUS
ESCI
KCI
Journal Title
Korean Chemical Engineering Research(HWAHAK KONGHAK)
Volume
59
Number
3
Start Page
373
End Page
378
URI
https://scholarworks.gnu.ac.kr/handle/sw.gnu/3430
DOI
10.9713/kcer.2021.59.3.373
ISSN
0304-128X
2233-9558
Abstract
The study aimed to develop a high-power enzymatic electrode for a wearable fuel cell that generates electricity utilizing lactate present in a sweat as fuel. Anode was fabricated by immobilizing lactate oxidase (LOx) on flexible carbon paper. As the lactate concentration in the electrolyte solution increased, the amount of current generated by catalysis of lactate oxidase increased. The immobilized LOx generated 1.5-times greater oxidation current density in the presence of gold nanoparticles than carbon paper only. Bilirubin oxidase (BOD)-immobilized cathode generated a larger amount of reduction current in the electrolyte saturated with oxygen than purged with nitrogen. A fuel cell composed of two electrodes was fabricated and cell voltage was measured under different discharge current. At the discharge current density of 66.7 mu A/cm(2), the cell voltage was 0.5 +/- 0.0 V leading to maximum cell power density of 33.8 +/- 2.5 mu W/cm(2).
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Kim, Chang Joon
대학원 (나노신소재융합공학과)
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