Nafion phosphonic acid composite membranes for proton exchange membranes fuel cells

被引：55

作者：

Teixeira, Fatima C. ^{[1
]}

de Sa, Ana I. ^{[1
]}

Teixeira, Antonio P. S. ^{[2
,3
]}

Rangel, C. M. ^{[1
]}

机构：

[1] Lab Nacl Energia & Geol IP, Estr Paco Lumiar 22, P-1649038 Lisbon, Portugal

[2] Univ Evora, Escola Ciencias & Tecnol, Dept Quim, R Romao Ramalho 59, P-7000671 Evora, Portugal

[3] Univ Evora, IIFA, Ctr Quim Evora, R Romao Ramalho 59, P-7000671 Evora, Portugal

来源：

APPLIED SURFACE SCIENCE | 2019年 / 487卷

关键词：

Proton exchange membranes; Fuel cells; Nafion; Phosphonic acids; Proton conductivity; POLYMER ELECTROLYTE MEMBRANES; INTERMEDIATE TEMPERATURE; PROTOGENIC GROUP; SULFONIC-ACID; BISPHOSPHONATES; CONDUCTIVITY; WATER; ION; CONDUCTORS; OPERATION;

D O I：

10.1016/j.apsusc.2019.05.078

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this work, new doped Nafion membranes with enhanced proton conductivity were prepared to be used as proton exchange membranes in fuel cells. New dopants derived from arylmono-or bisphosphonic acid were prepared and incorporated into the new membranes using impregnation or casting methods. Proton conductivities were assessed by Electrochemical Impedance Spectroscopy (EIS), at different temperatures and relative humidity (RH) conditions, in order to evaluate the influence of the structure and the method of the preparation on proton transport. The membranes prepared by casting showed higher proton conductivities than commercial Nafion membrane at all temperatures and relative humidity conditions studied. The [1,4-phenylenebis-(hydroxymethanetriyl)] tetrakis(phosphonic acid) (BP2) showed the best proton conductivity with a value of 87 mS cm(-1). The values obtained for the activation energy (Ea) for proton conduction suggests that transport occurs via both Grotthuss and vehicular mechanisms.

引用

页码：889 / 897

页数：9

共 63 条

[1] The development of bisphosphonates for therapeutic uses, and bisphosphonate structure-activity consideration [J].

Abdou, Wafaa M. ;

Shaddy, Abeer A. .

ARKIVOC, 2009, :143-182

[2] Catalytic enantioselective Pudovik reaction of aldehydes and aldimines with tethered bis(8-quinolinato) (TBOx) aluminum complex [J].

Abell, Joshua P. ;

Yamamoto, Hisashi .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (32) :10521-+

[3] Phosphonated poly(arylene ether)s as potential high temperature proton conducting materials [J].

Abouzari-Lotf, Ebrahim ;

Ghassemi, Hossein ;

Shockravi, Abbas ;

Zawodzinski, Thomas ;

Schiraldi, David .

POLYMER, 2011, 52 (21) :4709-4717

[4] Silicon oxide Nafion composite membranes for proton-exchange membrane fuel cell operation at 80-140° C [J].

Adjemian, KT ;

Lee, SJ ;

Srinivasan, S ;

Benziger, J ;

Bocarsly, AB .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2002, 149 (03) :A256-A261

[5] THE GROTTHUSS MECHANISM [J].

AGMON, N .

CHEMICAL PHYSICS LETTERS, 1995, 244 (5-6) :456-462

[6]

[Anonymous], ORGANIC STRUCTURAL C

[7] Cobalt phosphonates: An unusual polymeric cobalt phosphonate containing a clathrated phosphonate anion and a layered bisphosphonate [J].

Bakhmutova, EV ;

Ouyang, X ;

Medvedev, DG ;

Clearfield, A .

INORGANIC CHEMISTRY, 2003, 42 (22) :7046-7051

[8] Iron(III)-phosphonate complexes [J].

Barja, BC ;

Herszage, J ;

Alfonso, MD .

POLYHEDRON, 2001, 20 (15-16) :1821-1830

[9] Synthesis and characterization of the open-framework barium bisphosphonate [Ba3(O3PCH2NH2CH2PO3)2(H2O)4]•3H2O [J].

Bauer, S ;

Muller, H ;

Bein, T ;

Stock, N .

INORGANIC CHEMISTRY, 2005, 44 (25) :9464-9470

[10] Arylphosphonic acid-functionalized polyelectrolytes as fuel cell membrane material [J].

Bock, Thorsten ;

Moehwald, Helmut ;

Mulhaupt, Rolf .

MACROMOLECULAR CHEMISTRY AND PHYSICS, 2007, 208 (13) :1324-1340

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