Synthesis of highly conductive titanium suboxide support materials with superior electrochemical durability for proton exchange membrane fuel cells
- Authors
- Kim, Min-Cheol; Cho, Namchul; Kang, Tae Jun; Manh, Nguyen The; Lee, Young-Woo; Park, Kyung-Won
- Issue Date
- 12-Aug-2020
- Publisher
- Taylor & Francis
- Keywords
- Electrical conductivity; proton exchange membrane fuel cells; stability; support material; titanium suboxide
- Citation
- Molecular Crystals and Liquid Crystals, v.707, no.1, pp 110 - 117
- Pages
- 8
- Journal Title
- Molecular Crystals and Liquid Crystals
- Volume
- 707
- Number
- 1
- Start Page
- 110
- End Page
- 117
- URI
- https://scholarworks.bwise.kr/sch/handle/2021.sw.sch/2552
- DOI
- 10.1080/15421406.2020.1743462
- ISSN
- 1542-1406
1543-5318
- Abstract
- The carbon material mainly used as a support material in proton exchange membrane fuel cells (PEMFCs) has a critical limitation-the corrosion reaction of carbon by a water-electrolysis reaction during PEMFC operation. To overcome this corrosion problem, transition metal oxides have recently been proposed as a next-generation support material to replace carbon materials. However, the low electrical conductivity of transition metal oxides leads to a negative effect on the electrochemical performance of PEMFCs. Therefore, in this study, titanium suboxide (TSO) with a crystalline phase of reduced transition metal oxide and high electrical conductivity was synthesized using a combined catalytic and thermal reduction reaction. In particular, the TSO material synthesized at a temperature of 900 degrees C was confirmed to exhibit a single Ti4O7 phase and electrical conductivity 10(5)-10(6) times higher than that of bare TiO2. Furthermore, TSO exhibits superior electrochemical durability against corrosion reaction via a water-electrolysis reaction during PEMFC operation.
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Collections - SCH Media Labs > Department of Energy Systems Engineering > 1. Journal Articles
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