Kim, Jeong-Hi Kim, Hyoung-Juhn Lim, Tae-Hoon Lee, Ho-In 2024-01-21T00:33:42Z 2024-01-21T00:33:42Z 2021-08-31 2007-09 1226-086X https://pubs.kist.re.kr/handle/201004/134183 Pt/C catalyst layers with a phosphoric acid-doped polybenzimidazole ionomer binder were used as the electrode for a high temperature polymer electrolyte fuel cell. Catalyst layers were prepared with a transparent ionomer solution in trifluoroacetic acid solvent, an opaque ionomer dispersion in a trifluoroacetic acid/propanol-based solvent, and a mixture of the above two substances. The nano-sized ionomers in the transparent ionomer solution were located inside the primary pores, while the micro-sized ionomer agglomerates in the opaque ionomer dispersion were located outside the primary pores and produced proper proton conduction connections without blocking the primary pore openings. The optimum cell performance was obtained with an appropriate mixture of the transparent ionomer solution and opaque ionomer dispersion. English ELSEVIER SCIENCE INC POLY(2,5-BENZIMIDAZOLE) ABPBI MEMBRANES METHANOL CONDUCTIVITY CARBON WATER Improvement of high temperature polymer electrolyte fuel cell performance with phosphoric acid-doped polybenzimidazole ionomer binder in catalyst layer Article 1 JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, v.13, no.5, pp.850 - 855 JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY 13 5 850 855 scie scopus kci ART001075042 000249796000026 2-s2.0-51549100399 Chemistry, Multidisciplinary Engineering, Chemical Chemistry Engineering Article POLY(2,5-BENZIMIDAZOLE) ABPBI MEMBRANES METHANOL CONDUCTIVITY CARBON WATER high temperature polymer electrolyte fuel cell ionomer binder membrane electrode assembly phosphoric acid-doped polybenzimidazole