A novel approach for highly proton conductive electrolyte membranes with improved methanol barrier properties Layer by Layer assembly of salt containing polyelectrolytes

Yilmaztürk, Serpil; Deligöz, Hüseyin; YILMAZOĞLU, Mesut; Damyan, Hakan; Öksüzömer, Faruk; Koç, S. Naci; Durmuş, Ali; Gürkaynak, M. Ali

doi:10.1016/j.memsci.2009.07.019

A novel approach for highly proton conductive electrolyte membranes with improved methanol barrier properties Layer by Layer assembly of salt containing polyelectrolytes

Yazarlar (8)

Serpil Yilmaztürk Istanbul Üniversitesi, Türkiye

Hüseyin Deligöz Istanbul Üniversitesi, Türkiye

Doç. Dr. Mesut YILMAZOĞLU Istanbul Üniversitesi, Türkiye

Hakan Damyan Istanbul Üniversitesi, Türkiye

Faruk Öksüzömer Istanbul Üniversitesi, Türkiye

S. Naci Koç Istanbul Üniversitesi, Türkiye

Ali Durmuş Istanbul Üniversitesi, Türkiye

M. Ali Gürkaynak Istanbul Üniversitesi, Türkiye

Makale Türü	Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı	Journal of Membrane Science (Q1)
Dergi ISSN	0376-7388 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler	SCI-Expanded
Makale Dili	İngilizce	Basım Tarihi	11-2009
Cilt / Sayı / Sayfa	343 / 1 / 137–146	DOI	10.1016/j.memsci.2009.07.019
Makale Linki	http://linkinghub.elsevier.com/retrieve/pii/S0376738809005432

Özet

A series of highly proton conductive electrolyte membranes with improved methanol barrier properties are prepared from polyallylamine hydrochloride (PAH) and polystyrene sulfonic acid (PSS) including salt by Layer-by-Layer (LbL) method. The effects of added salt type (NaCl, MgCl2) and salt concentration (1.0 M, 0.1 M) on proton conductivity (σ) and methanol barrier properties of the LbL self-assembled composite membranes are discussed in terms of controlled layer thickness and charge density. Furthermore, the influences of ion type in the multilayered composite membranes are studied in conjunction with physicochemical and thermal properties. The deposition of the self-assembly of PAH/PSS film on Nafion is followed by UV-Vis spectroscopy and it is observed that the polyelectrolyte layers growth on both sides of Nafion membrane regularly. (PAH/PSS)5-Na⁺ and (PAH/PSS)5-H⁺ with 1.0 M NaCl exhibits 49.6 and 27.8% reduction in lower methanol permittivity in comparison with the pristine Nafion^®117, respectively, while the proton conductivities are 12.97 and 74.69 mS cm^-1. Promisingly, it is found that the membrane selectivity values (Φ) of all multilayered membranes in H⁺ form are much higher than that of salt form (Na⁺ and Mg²⁺) and perfluorosulfonated ionomers reported in the literature. Also, we find out that the use of polyelectrolytes with high charge density causes a further improvement in proton conductivity and methanol barrier properties simultaneously. These encouraging results indicate that upon a suitable choice of LbL deposition conditions, composite membranes exhibiting both high proton conductivity and improved methanol barrier properties can be tailored for fuel cells. © 2009 Elsevier B.V. All rights reserved.

Anahtar Kelimeler

Layer-by-Layer (LbL) | Membrane | Self-assembly | Direct methanol fuel cell | Proton conductivity

Science Direct

BM Sürdürülebilir Kalkınma Amaçları

Atıf Sayıları
WoS	36
SCOPUS	43
Google Scholar	50

A novel approach for highly proton conductive electrolyte membranes with improved methanol barrier properties Layer by Layer assembly of salt containing polyelectrolytes

Dergi Adı	JOURNAL OF MEMBRANE SCIENCE
Yayıncı	Elsevier B.V.
Açık Erişim	Hayır
ISSN	0376-7388
E-ISSN	1873-3123
CiteScore	17,1
SJR	1,935
SNIP	1,396

A novel approach for highly proton conductive electrolyte membranes with improved methanol barrier properties Layer by Layer assembly of salt containing polyelectrolytes

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