A novel method is developed to increase the resistance to electrochemical carbon corrosion using a self-assembled organosilane coating of dodecyltrichlorosilane (DTS) on carbon black (CB). This process successfully creates a hydrophobic coating on the hydrophilic surface of carbon black without poisoning Pt nanoparticles. The hydrophobic DTS coating improves the performance of CB in fuel cells by enhancing the mass transfer rate. Following carbon corrosion tests, on-line mass spectrometry shows that this DTS coating improves the electrochemical carbon corrosion resistance of CB by increasing the contact resistance of water, which is necessary for electrochemical carbon corrosion. Thus, this DTS coating is a very effective means to improve the performance and durability of fuel cells.
Bibliographical noteFunding Information:
This work was supported by the Priority Research Centers Program through the National Research Foundation of Korea ( 2009-0093823 ), ( NRF-2009-C1AAA001-0092926 ) funded by the Ministry of Education, Science and Technology ( 2009-00093623 , NRF-209-C1AAA001-0092926 ) and National Research Foundation of Korea (NRF) grant funded by the Korean government (MEST) (No. 2011-0028594 ).
All Science Journal Classification (ASJC) codes
- Renewable Energy, Sustainability and the Environment
- Energy Engineering and Power Technology
- Physical and Theoretical Chemistry
- Electrical and Electronic Engineering