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Improved microbial electrolysis cell hydrogen production by hybridization with a TiO2 nanotube array photoanode

Title
Improved microbial electrolysis cell hydrogen production by hybridization with a TiO2 nanotube array photoanode
Authors
Kim, Ki NamLee, Sung HyunKim, Hwa-PyoungPark, YoungHoIn, Su-Il
DGIST Authors
In, Su-Il
Issue Date
2018-11
Citation
Energies, 11(11)
Type
Article
Article Type
Article
ISSN
1996-1073
Abstract
A microbial electrolysis cell (MEC) consumes the chemical energy of organic material producing, in turn, hydrogen. This study presents a new hybrid MEC design with improved performance. An external TiO2 nanotube (TNT) array photoanode, fabricated by anodization of Ti foil, supplies photogenerated electrons to the MEC electrical circuit, significantly improving overall performance. The photogenerated electrons help to reduce electron depletion of the bioanode, and improve the proton reduction reaction at the cathode. Under simulated AM 1.5 illumination (100 mW cm-2) the 28 mL hybrid MEC exhibits a H2 evolution rate of 1434.268 ± 114.174 mmol m-3 h-1, a current density of 0.371 ± 0.000 mA cm-2 and power density of 1415.311 ± 23.937 mW m-2, that are respectively 30.76%, 34.4%, and 26.0% higher than a MEC under dark condition. © 2018 MDPI AG. All rights reserved.
URI
http://hdl.handle.net/20.500.11750/9493
DOI
10.3390/en11113184
Publisher
Multidisciplinary Digital Publishing Institute (MDPI)
Related Researcher
  • Author In, Su-Il Green and Renewable Energy for Endless Nature(GREEN) Lab
  • Research Interests CO2 conversion to hydrocarbon fuels; Water splitting for hydrogen generation; Quantum dot devices; Dye sensitized solar cells; Environmental remediation; Synthesis of functional nanomaterials; CO2 연료전환; 수소생산을 위한 광전기화학적 물분해; 양자점 태양전지; 염료감응 태양전지; 공해물질 저감연구; 기능성 나노소재 개발
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Collection:
Department of Energy Science and EngineeringGreen and Renewable Energy for Endless Nature(GREEN) Lab1. Journal Articles


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