𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Composite Proton-Conducting Membranes for PEMFCs

✍ Scribed by P. Mustarelli; A. Carollo; S. Grandi; E. Quartarone; C. Tomasi; S. Leonardi; A. Magistris

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
217 KB
Volume
7
Category
Article
ISSN
1615-6846

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Composite membranes are of interest for PEMFCs and DMFCs. This paper describes a basic study of the influence of silica on the proton conductivity: (i) added as a filler to poly(vinylidene fluoride‐hexafluoropropylene) and poly(benzimidazole)‐based membranes activated with H~3~PO~4~, or (ii) included in the matrix of class II hybrids based on tetraethoxysilane and poly(ethylene glycol) and activated with phosphotungstic acid (PWA).

The addition of acidic silica as a filler determines proton conductivity increases up to one order of magnitude for filler amounts which strongly depend on the proton transport mechanism, and on the nature (free or partially free) of the activating acid. The increase of the silica content in the hybrid matrix induces a more complex behaviour which also depends on the amount of PWA.

📜 SIMILAR VOLUMES

Novel aryloxy-polybenzimidazoles as prot
Novel aryloxy-polybenzimidazoles as proton conducting membranes for high temperature PEMFCs
✍ S. Angioni; P.P. Righetti; E. Quartarone; E. Dilena; P. Mustarelli; A. Magistris 📂 Article 📅 2011 🏛 Elsevier Science 🌐 English ⚖ 681 KB

Polybenzimidazole (PBI) is the material of choice to fabricate proton exchange membranes for high temperature PEMFCs. Among the most recent trends in the design of PBI polymers, we recall the introduction of oxygen atoms in the polymer backbone. In fact, the presence of ether groups improves the pol

Plasma-Polymerised Proton Conductive Mem
Plasma-Polymerised Proton Conductive Membranes for a Miniaturised PEMFC
✍ H. Mahdjoub; S. Roualdès; P. Sistat; N. Pradeilles; J. Durand; G. Pourcelly 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 English ⚖ 834 KB

## Abstract Thin films, containing fluorocarbons and sulphonic acid groups, were prepared by plasma polymerisation of 1,3‐butadiene/CF~3~SO~3~H and styrene/CF~3~SO~3~H mixtures using two different types of plasma discharges. The morphology, density, and chemical composition of the synthesised plasm

Pyridine-based PBI Composite Membranes f
Pyridine-based PBI Composite Membranes for PEMFCs
✍ E. Quartarone; A. Magistris; P. Mustarelli; S. Grandi; A. Carollo; G.Z. Zukowska 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 330 KB

## Abstract Polybenzimidazole (PBI) activated with H~3~PO~4~ is one of the membranes of choice to replace Nafion® in PEMFCs in order to allow their use above 100 °C. The limits of PBI in terms of acid leaching and low conductivity below 160 °C can be overcome by a proper monomer tailoring, and by t