Kim, Na Young Lee, Jin Hee Kwon, Jeong An Yoo, Sung Jong Jang, Jong Hyun Kim, Hyoung-Juhn Lim, Dong-Hee Kim, Jin Young 2024-01-20T02:04:31Z 2024-01-20T02:04:31Z 2021-09-01 2017-02 1226-086X https://pubs.kist.re.kr/handle/201004/123113 Carbon-based nanomaterials are frequently used as a support for proton exchange membrane fuel cell (PEMFC) catalysts, due to their high electrical conductivity and large surface area; however, the limited long-term stability of carbon-based catalysts under PEMFC operation causes huge problems in practical applications. Here we report the use of vanadium nitride (VN) nanofiber membrane as a highly durable catalyst support for oxygen reduction reaction (ORR). Nanofibrous VN was prepared using a simple electrospinning process, followed by sequential heat treatments in air and NH3. The NH3 treatment temperature affected the crystallinity as well as the crystal size of VN, which ultimately affected the catalytic ORR activity of Pt-decorated catalysts. The optimized Pt/VN catalysts exhibited excellent ORR activity and durability in acid electrolyte. Much higher durability of Pt/VN than Pt/C was verified by chrono-amperometry analysis. Density functional theory (DFT) calculations provided further evidence of the strong interaction of Pt and VN, which contributed to the high stability of the catalyst. (C) 2016 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved. English 한국공업화학회 Vanadium nitride nanofiber membrane as a highly stable support for Pt-catalyzed oxygen reduction reaction Article 10.1016/j.jiec.2016.10.043 1 Journal of Industrial and Engineering Chemistry, v.46, pp.298 - 303 Journal of Industrial and Engineering Chemistry 46 298 303 N scie scopus kci ART002196392 000393243500035 2-s2.0-85006660001 Chemistry, Multidisciplinary Engineering, Chemical Chemistry Engineering Article ELECTROCATALYSIS PERFORMANCE STABILITY ELECTRODE ENERGY Vanadium nitride Oxygen reduction reaction Electrospinning Non-carbon support