Biotechnology and Bioprocess Engineering 2024; 29(3): 529-542  
Development of a glucose enzyme fuel cell based on thin film electrode using biocatalysts
Dong Sup Kim1 · Xiaoguang Yang2,3 · Abdus Sobhan4 · Chulhwan Park5 · Seung Wook Kim2 · Jinyoung Lee1
1 Department of Green Chemical Engineering, Sangmyung University, Cheonan 31066, Korea
2 Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Korea
3 E & S Healthcare Ltd, Daejeon 34015, Korea
4 Department of Agricultural and Biosystems Engineering, South Dakota State University, Brookings, SD 57007, USA
5 Department of Chemical Engineering, Kwangwoon University, Seoul 01897, Korea
Correspondence to: Seung Wook Kim
kimsw@korea.ac.kr
Jinyoung Lee
dorgly@smu.ac.kr

Seung Wook Kim and Jinyoung Lee have contributed equally to this work.
Received: August 31, 2023; Revised: November 30, 2023; Accepted: December 24, 2023; Published online: March 21, 2024.
© The Korean Society for Biotechnology and Bioengineering. All rights reserved.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Artificial transplantation of the human body, which requires high technology, has been an attractive issue in the 4th industrial revolution era. The artificial equipment for human applications could contain a small-scale power supply. Enzyme fuel cells (EFCs) that generate green energy are being researched for use as the power supply for pacemakers, insulin pump, and retinal implant in human body. This study focused on an (EFC) using thin film electrodes-based on enzyme immobilization technology. The performance of this EFC was improved by enzyme immobilization and electron transfer. To improve the electron transfer, the GO/Co/chitosan composite was modified on the surface of thin film electrode. The properties of this modified surface of thin film electrode were confirmed by analysis of field emission gun scanning electron microscopy, Fourier transform infrared spectroscopy, and atomic force microscopy. The performance of the designed EFC was optimized with immobilized redox enzyme on the modified electrode. The highest power density and voltage are determined as 441.48 μW/cm 2 and − 0.443 V by thin film electrode, respectively. The optimum conditions of the EFC were 0.1 M D-glucose, 0.1 g/L glucose oxidase, pH 7.0, and reaction time of 4 h for both two types of thin film-electrodes.
Keywords: Environmental enzyme · Enzymatic fuel cell · Thin film electrode · Electrochemical oxidation

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