Jin, SYang, SYLee, JMKang, MSChoi, SMAhn, WFuku, Xolile GModibedi, Mmalewane RHan, BSeo, MH2021-10-222021-10-222021-06Jin, S., Yang, S., Lee, J., Kang, M., Choi, S., Ahn, W., Fuku, X.G. & Modibedi, M.R. et al. 2021. Fluorine-decorated graphene nanoribbons for an anticorrosive polymer electrolyte membrane fuel cell. <i>ACS Applied Materials & Interfaces, 13(23).</i> http://hdl.handle.net/10204/121351944-82441944-8252https://doi.org/10.1021/acsami.1c04132http://hdl.handle.net/10204/12135Pt-supported carbon material-based electrocatalysts are formidably suffering from carbon corrosion when H2O and O2 molecules are present at high voltages in polymer electrolyte membrane fuel cells (PEMFCs). In this study, we discovered that the edge site of a fluorine-doped graphene nanoribbon (F-GNR) was slightly adsorbed with H2O and was thermodynamically unfavorable with O atoms after defining the thermodynamically stable structure of the F-GNR from DFT calculations. Based on computational predictions, the physicochemical and electrochemical properties of F-GNRs with/without Pt nanoparticles derived from a modified Hummer’s method and the polyol process were investigated as support materials for electrocatalysts and additives in the cathode of a PEMFC, respectively. The Pt/F-GNR showed the lowest degradation rate in carbon corrosion and was effective in the cathode as additives, resulting from the enhanced carbon corrosion durability owing to the improved structural stability and water management. Notably, the F-GNR with highly stable carbon corrosion contributed to achieving a more durable PEMFC for long-term operation.AbstractenFluorine dopingCarbon corrosionGraphene nanoribbonDFT calculationMembraneelectrode assemblyMEAPolymer electrolyte membrane fuel cellsPEMFCsOxygen reductionArticleJin, S., Yang, S., Lee, J., Kang, M., Choi, S., Ahn, W., ... Seo, M. (2021). Fluorine-decorated graphene nanoribbons for an anticorrosive polymer electrolyte membrane fuel cell. <i>ACS Applied Materials & Interfaces, 13(23)</i>, http://hdl.handle.net/10204/12135Jin, S, SY Yang, JM Lee, MS Kang, SM Choi, W Ahn, Xolile G Fuku, Mmalewane R Modibedi, B Han, and MH Seo "Fluorine-decorated graphene nanoribbons for an anticorrosive polymer electrolyte membrane fuel cell." <i>ACS Applied Materials & Interfaces, 13(23)</i> (2021) http://hdl.handle.net/10204/12135Jin S, Yang S, Lee J, Kang M, Choi S, Ahn W, et al. Fluorine-decorated graphene nanoribbons for an anticorrosive polymer electrolyte membrane fuel cell. ACS Applied Materials & Interfaces, 13(23). 2021; http://hdl.handle.net/10204/12135.TY - Article AU - Jin, S AU - Yang, SY AU - Lee, JM AU - Kang, MS AU - Choi, SM AU - Ahn, W AU - Fuku, Xolile G AU - Modibedi, Mmalewane R AU - Han, B AU - Seo, MH AB - Pt-supported carbon material-based electrocatalysts are formidably suffering from carbon corrosion when H2O and O2 molecules are present at high voltages in polymer electrolyte membrane fuel cells (PEMFCs). In this study, we discovered that the edge site of a fluorine-doped graphene nanoribbon (F-GNR) was slightly adsorbed with H2O and was thermodynamically unfavorable with O atoms after defining the thermodynamically stable structure of the F-GNR from DFT calculations. Based on computational predictions, the physicochemical and electrochemical properties of F-GNRs with/without Pt nanoparticles derived from a modified Hummer’s method and the polyol process were investigated as support materials for electrocatalysts and additives in the cathode of a PEMFC, respectively. The Pt/F-GNR showed the lowest degradation rate in carbon corrosion and was effective in the cathode as additives, resulting from the enhanced carbon corrosion durability owing to the improved structural stability and water management. Notably, the F-GNR with highly stable carbon corrosion contributed to achieving a more durable PEMFC for long-term operation. DA - 2021-06 DB - ResearchSpace DP - CSIR J1 - ACS Applied Materials & Interfaces, 13(23) KW - Fluorine doping KW - Carbon corrosion KW - Graphene nanoribbon KW - DFT calculation KW - Membraneelectrode assembly KW - MEA KW - Polymer electrolyte membrane fuel cells KW - PEMFCs KW - Oxygen reduction LK - https://researchspace.csir.co.za PY - 2021 SM - 1944-8244 SM - 1944-8252 T1 - Fluorine-decorated graphene nanoribbons for an anticorrosive polymer electrolyte membrane fuel cell TI - Fluorine-decorated graphene nanoribbons for an anticorrosive polymer electrolyte membrane fuel cell UR - http://hdl.handle.net/10204/12135 ER -24978