Synthesis of nickel catalyzed sulfonated poly (phenylenebenzophenone)s from primarily sulfonated monomer for proton exchange membranes. (26th April 2019)

• Record Type: Journal Article
• Authors: Chandra Sutradhar, Sabuj; Rahman, Md. Mahabubur; Ahmed, Faiz; Ryu, Taewook; Yoon, Sujin; Lee, Seungchan; Kim, Jaewoong; Lee, Yonghoon; Jin, Yongcheng; Kim, Whangi
• Is Part Of: International journal of hydrogen energy. Volume 44:Number 22(2019)
• Page Start: 11311
• Page End: 11320
• Publication Date: 2019-04-26
• Subjects: Proton exchange membranes -- Nickel catalyst -- Carbon-carbon coupling polymerization -- Proton conductivity -- Morphology; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2019.02.107
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: This extensive study adequately explores the considerable influence of nickel catalyst and wholly aromatic primarily sulfonated monomers. The synthesis of the chemically and mechanically stable sulfonated poly (phenylenebenzophenone)s (SPPBP) flexible membranes from primarily Sulfonated 1, 4-dichloro-2, 5-diphenylenebenzophenone (SPBP) and 1, 4-dichloro-2, 5-diphenylenemethoxybenzophenone (SPMBP) monomers have been reported here using nickel catalyzed carbon-carbon coupling copolymerization. The synthesized SPBP monomer typically possesses a symmetrical structure with excellent reactivity that effectively assisted to control the position, number, and distribution of the sulfonic acid groups in the polymer backbone and attained high molecular weight SPPBP copolymers. The synthesized polymers showed ion exchange capacity (IEC) 1.0–1.93 meqv./g, water uptake 36.4–84.7% and comparable proton conductivity 28.5–94.9 meqv./g to Nafion ® (98.92 meqv./g) at 90 °C. The atomic force microscopic (AFM) results show that SPPBP copolymer membranes provide well phase-separated morphology and thermogravimetric analysis (TGA) confirms the excellent thermal stability of the synthesized SPPBP membranes as well. The synthesized SPPBP membranes possess a potential feature for the practical application in the fuel cell. Graphical abstract: Image 1 Highlights: Synthesis of sulfonated poly(phenylenebenzophenone)s using Ni-catalyst. Controlled the IEC by varying feed ratio of the primary sulfonated. Showed almost analogous proton conductivity and power density to Nafion 117®. Exhibited excellent thermal stability and hydrophilic/hydrophopic phase separation.