Abstract
We have fabricated the fuel cell based on the tissue derived biomaterial “collagen” and investigated its proton transfer. It was found that “collagen” becomes the electrolyte of fuel cell in the humidified condition. The power density of the fuel cell becomes typically 8.6 W/m2 in the 80% humidity. Further, these results indicate that collagen exhibits proton conductivity in the humidified condition. Both of proton conductivity and dielectric constant increase by the increase of humidity. From the analyses of the frequency dependence of AC conductivity, it was found that proton conductivity and the dielectric dispersion observed in the humidified condition are caused by the formation of the water bridge, which is bonded with the collagen peptide chain. Considering that hydration induces the formation of the water bridge and that increases proton conductivity and dielectric constant, it is deduced that proton transfer in the fuel cell based on collagen is caused by the breaking and rearrangement of hydrogen bond in the water bridge.
Highlights
It is well-known that tissue-derived biomaterials are abundant in nature and are widely used in biomedical field
From the analyses of the frequency dependence of AC conductivity, it was found that proton conductivity and the dielectric dispersion observed in the humidified condition are caused by the formation of the water bridge, which is bonded with the collagen peptide chain
Considering that hydration induces the formation of the water bridge and that increases proton conductivity and dielectric constant, it is deduced that proton transfer in the fuel cell based on collagen is caused by the breaking and rearrangement of hydrogen bond in the water bridge
Summary
It is well-known that tissue-derived biomaterials are abundant in nature and are widely used in biomedical field. It is known that the DNA film exhibits proton conductivity in the humidified condition and can be used as the electrolyte of fuel cell [10] [11]. In this way, tissue-derived biomaterials are useful for the application to electrical devices and become excellent proton-transfer materials. The maximum power density in its fuel cell reaches to 1.4 W/m2 and is stable for 30 days at least This result indicates that submucosa becomes the electrolyte of fuel cell and that becomes proton conductor in the humidified condition. It is expected that these results will be helpful to the development to the electrical devices and energy devices of biopolymer, such as the power supply of artificial heart
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
