Journal
CURRENT OPINION IN ELECTROCHEMISTRY
Volume 5, Issue 1, Pages 173-182Publisher
ELSEVIER
DOI: 10.1016/j.coelec.2017.09.001
Keywords
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Funding
- Grants-in-Aid for Scientific Research [16J08220] Funding Source: KAKEN
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Currently, bioelectrocatalytic devices such as biofuel cells and bioreactors are recognized as new environment-friendly devices for the production of electricity and valuable products. Thus far, systems have been improved from the viewpoints of enzymes and electrodes. A gas diffusion bioelectrode (GDBE) is one of the best approaches to improve electrode systems. This system has been remarkably developed and essentially employed in bioelectrocatalytic systems with gaseous substrates to realize high-speed H-2 oxidation and O-2 reduction for biofuel cells and to realize the high-speed bioelectrocatalytic reduction of CO2. GDBEs permit the enzymes to directly use gaseous substrates, and it is imperative that the electrodes exhibit suitable porosity, conductivity, and hydrophobicity/hydrophilicity balance for the gas permeation and enzyme reaction at the bio-three-phase interface of GDBEs. In this review article, the major factors of GDBEs are discussed by highlighting recent remarkable contributions and challenges.
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