𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Functionalized Poly(benzimidazole)s as Membrane Materials for Fuel Cells

✍ Scribed by Prabakaran R. Sukumar; Weicheng Wu; Dilyana Markova; Ömer Ünsal; Markus Klapper; Klaus Müllen

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
279 KB
Volume
208
Category
Article
ISSN
1022-1352

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

New polymer electrolyte membranes for fuel cell applications were synthesized via covalent bonding of phosphonic acid (PA) onto poly(benzimidazole) (PBI). PBI was functionalized via N‐alkylation with an appropriate phosphonate, followed by hydrolysis of the grafted groups to the desired PA functions. Alternatively, polymer networks based on PBI and vinyl phosphonic acid (VPA) were successfully synthesized. In this second approach, PBI was first functionalized in a polymer analogous modification with polymerizable or radical‐forming groups. Thermally induced ‘grafting‐through’ or ‘grafting‐from’ polymerization of VPA led to the corresponding PBI/PVPA networks. The structure‐property relationships with respect to proton conducting properties of the membrane materials are discussed.

magnified image

📜 SIMILAR VOLUMES

Synthesis of Poly(2,5-benzimidazole) for
Synthesis of Poly(2,5-benzimidazole) for Use as a Fuel-Cell Membrane
✍ Hyoung-Juhn Kim; Sung Yong Cho; Sung Jin An; Yeong Chan Eun; Ju-Yong Kim; Hae-Kw 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 106 KB

## Abstract Summary: Poly(2,5‐benzimidazole) (ABPBI) was synthesized in a novel polymerization medium containing CH~3~SO~3~H and P~2~O~5~. 3,4‐Diaminobenzoic acid, a monomer for ABPBI, is soluble in the medium and the polymerization was therefore performed in a homogeneous state. It produced polyme

Arylphosphonic Acid-Functionalized Polye
Arylphosphonic Acid-Functionalized Polyelectrolytes as Fuel Cell Membrane Material
✍ Thorsten Bock; Helmut Möhwald; Rolf Mülhaupt 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 408 KB

## Abstract In comparison to sulfonated polymers, phosphonic acid‐functionalized polyelectrolytes possess higher proton conductivity at elevated temperatures, improved chemical and thermal stabilities, much lower water swelling, decreased fuel permeability, and enhanced proton conductivities in low

Recent Developments on Proton Conduc-tin
Recent Developments on Proton Conduc-ting Poly(2,5-benzimidazole) (ABPBI) Membranes for High Temperature Poly-mer Electrolyte Membrane Fuel Cells
✍ J. A. Asensio; P. Gómez-Romero 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 English ⚖ 390 KB 👁 1 views

## Abstract Commercial polybenzimidazole (PBI) membranes impregnated with phosphoric acid have become a serious candidate as electrolytes for high temperature PEMFC. Much research effort has been devoted to the study of this proton conducting membrane.[1, 2] On the other hand, PBI is not the simple

Hyaluronidase-bound membrane as a biomat
Hyaluronidase-bound membrane as a biomaterial for implantable fuel cells
✍ Ahn, B. K. ;Wolfson, S. K. ;Yao, S. J. ;Liu, C. C. ;Todd, R. C. ;Weiner, S. B. 📂 Article 📅 1976 🏛 John Wiley and Sons 🌐 English ⚖ 531 KB

## Abstract A new biomaterial containing covalently bound hyaluronidase was prepared. An application of this enzyme membrane is to improve the performance of an implantable fuel cell. Hyaluronic acid is a contributor to the viscosity of tissue fluids but can be a potential fuel source because of it