1
|
Peng J, Lou K, Goenaga G, Zawodzinski T. Transport Properties of Perfluorosulfonate Membranes Ion Exchanged with Cations. ACS APPLIED MATERIALS & INTERFACES 2018; 10:38418-38430. [PMID: 30299923 DOI: 10.1021/acsami.8b12403] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this work, the properties of univalent, that is, Li+, Na+, NH4+, and TEA+ form perfluorosulfonate (PFSA) membranes are studied and compared to the properties of H+ form materials. Properties of these polymer membranes including water uptake, density and conductivity, were investigated for membranes exposed to various water activity levels. The water uptake by the membranes decreased in the order H+ > Li+ > Na+ > NH4+ > TEA+, the same order as the hydration enthalpy (absolute values) of cations. Conductivity values did not strictly follow this order, indicating the importance of different factors besides the hydration level. The partial molar volume of water is derived from the density data as a function of water content for the various membrane forms. This provides further insight into the water, cation, and polymer interactions. Factors that contribute to the conductivity of these membranes include the size of cations, the electrostatic attraction between cations and sulfonate group, and the ion-dipole and hydrogen bonding interactions between cations and water. NH4+ transport is surprisingly high given the low water uptake in NH4+ form membranes. We attribute this to the ability of this ion to develop hydrogen bonded structures that helps to overcome electrostatic interactions with sulfonates. Pulsed-field gradient (PFG) nuclear magnetic resonance (NMR) was used to measure the diffusion coefficient of water in the membranes. FT-IR spectroscopy is employed to probe cation interactions with water and sulfonate sites in the polymer. Overall, the results reflect a competition between the strong electrostatic interaction between cation and sulfonate versus hydration and hydrogen bonding which vary with cation type.
Collapse
Affiliation(s)
- Jing Peng
- Department of Chemical & Biomolecular Engineering , University of Tennessee , Knoxville , Tennessee 37996 , United States
| | - Kun Lou
- Bredesen Center for Interdisciplinary Research and Education , University of Tennessee , Knoxville , Tennessee 37996 , United States
| | - Gabriel Goenaga
- Department of Chemical & Biomolecular Engineering , University of Tennessee , Knoxville , Tennessee 37996 , United States
| | - Thomas Zawodzinski
- Department of Chemical & Biomolecular Engineering , University of Tennessee , Knoxville , Tennessee 37996 , United States
- Physical Chemistry of Materials Group , Oak Ridge National Laboratory , Oak Ridge , Tennessee 37831 , United States
| |
Collapse
|
2
|
Patil Y, Sambandam S, Ramani V, Mauritz K. Perfluorinated polymer electrolytes hybridized with in situ grown titania quasi-networks. ACS APPLIED MATERIALS & INTERFACES 2013; 5:42-48. [PMID: 23211267 DOI: 10.1021/am3017834] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Perfluorinated Nafion membranes, neutralized to various extents, were hybridized with titania quasi-networks that were grown in situ via catalyzed sol-gel reactions of an titanium isopropoxide precursor. The formation of Ti-O-Ti groups within the ionomer was verified by FTIR-ATR spectroscopy. EDAX studies confirmed that the extent of propagation of titania quasi-networks into the bulk of the ionomer film increased with ionomer neutralization. Compared to the unmodified control membrane, the hybrid membranes exhibited superior dimensional stability, modulus, stress, and strain at break and gas barrier properties. All hybrid membranes exhibited superior resistance to degradation when subjected to an accelerated stress test in an operating fuel cell environment, as a resultant of the better dimensional stability and gas barrier properties induced through addition of the inorganic titania phase.
Collapse
Affiliation(s)
- Yatin Patil
- School of Polymers and High Performance Materials, University of Southern Mississippi, Hattiesburg, Mississippi 39406, United States
| | | | | | | |
Collapse
|
3
|
|
4
|
Sahu A, Bhat S, Pitchumani S, Sridhar P, Vimalan V, George C, Chandrakumar N, Shukla A. Novel organic–inorganic composite polymer-electrolyte membranes for DMFCs. J Memb Sci 2009. [DOI: 10.1016/j.memsci.2009.09.016] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
5
|
Perfluorosulfonic acid membranes treated by supercritical carbon dioxide method for direct methanol fuel cell application. J Memb Sci 2009. [DOI: 10.1016/j.memsci.2009.03.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
6
|
Silicate and zirconium phosphate modified Nafion/PTFE composite membranes for high temperature PEMFC. JOURNAL OF POLYMER RESEARCH 2008. [DOI: 10.1007/s10965-008-9255-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
7
|
The study of PTFE/Nafion/Silicate membranes operating at low relative humidity and elevated temperature. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.jcice.2008.03.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
8
|
Mauritz KA, Hassan MK. Nanophase Separated Perfluorinated Ionomers as Sol‐Gel Polymerization Templates for Functional Inorganic Oxide Nanoparticles. POLYM REV 2007. [DOI: 10.1080/15583720701638393] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
9
|
Novikova SA, Volodina EI, Pis'menskaya ND, Veresov AG, Stenina IA, Yaroslavtsev AB. Ionic Transport in Cation-Exchange Membranes MK-40 Modified with Zirconium Phosphate. RUSS J ELECTROCHEM+ 2005. [DOI: 10.1007/s11175-005-0183-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
10
|
Phillips AK, Moore RB. Ionic actuators based on novel sulfonated ethylene vinyl alcohol copolymer membranes. POLYMER 2005. [DOI: 10.1016/j.polymer.2005.02.123] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
11
|
|
12
|
|
13
|
Rubatat L, Gebel G, Diat O. Fibrillar Structure of Nafion: Matching Fourier and Real Space Studies of Corresponding Films and Solutions. Macromolecules 2004. [DOI: 10.1021/ma049683j] [Citation(s) in RCA: 303] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- L. Rubatat
- Département de Recherche Fondamentale sur la Matière Condensée, SI3M, Groupe Polymères Conducteurs Ioniques, CEA Grenoble, 17 rue des Martyrs, 38054, Grenoble Cedex 9, France
| | - G. Gebel
- Département de Recherche Fondamentale sur la Matière Condensée, SI3M, Groupe Polymères Conducteurs Ioniques, CEA Grenoble, 17 rue des Martyrs, 38054, Grenoble Cedex 9, France
| | - O. Diat
- Département de Recherche Fondamentale sur la Matière Condensée, SI3M, Groupe Polymères Conducteurs Ioniques, CEA Grenoble, 17 rue des Martyrs, 38054, Grenoble Cedex 9, France
| |
Collapse
|
14
|
Choi WC, Jeon MK, Kim YJ, Woo SI, Hong WH. Development of enhanced materials for direct-methanol fuel cell by combinatorial method and nanoscience. Catal Today 2004. [DOI: 10.1016/j.cattod.2004.06.108] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
15
|
Kim YJ, Choi WC, Woo SI, Hong WH. Evaluation of a palladinized Nafion™ for direct methanol fuel cell application. Electrochim Acta 2004. [DOI: 10.1016/j.electacta.2004.02.037] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
16
|
Young SK, Jarrett WL, Mauritz KA. Studies of the aging of nafion®/silicate nanocomposites using29Si solid state NMR spectroscopy. POLYM ENG SCI 2004. [DOI: 10.1002/pen.10852] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
17
|
Young SK, Mauritz KA. Nafion®/(organically modified silicate) nanocomposites via polymerin situsol-gel reactions: Mechanical tensile properties. ACTA ACUST UNITED AC 2002. [DOI: 10.1002/polb.10282] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
18
|
Mauritz KA, Storey RF, Mountz DA, Reuschle DA. Poly(styrene-b-isobutylene-b-styrene) block copolymer ionomers (BCPI), and BCPI/silicate nanocomposites. 1. Organic counterion: BCPI sol–gel reaction template. POLYMER 2002. [DOI: 10.1016/s0032-3861(02)00261-6] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
19
|
Lambert AA, Mauritz KA, Schiraldi DA. [Poly(ethylene terephthalate) ionomer]/silicate hybrid materials via polymer-in situ sol-gel reactions. J Appl Polym Sci 2002. [DOI: 10.1002/app.10586] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
20
|
Nafion ® /ORMOSIL nanocomposites via polymer-in situ sol–gel reactions. 1. Probe of ORMOSIL phase nanostructures by 29 Si solid-state NMR spectroscopy. POLYMER 2002. [DOI: 10.1016/s0032-3861(02)00027-7] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
21
|
Mauritz KA, Storey RF, Reuschle DA, Beck Tan N. Poly(styrene-b-isobutylene-b-styrene) block copolymer ionomers (BCPI) and BCPI/silicate nanocomposites. 2. Na+BCPI sol–gel polymerization templates. POLYMER 2002. [DOI: 10.1016/s0032-3861(02)00387-7] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
22
|
Young S, Gemeinhardt G, Sherman J, Storey R, Mauritz K, Schiraldi D, Polyakova A, Hiltner A, Baer E. Covalent and non-covalently coupled polyester–inorganic composite materials. POLYMER 2002. [DOI: 10.1016/s0032-3861(02)00515-3] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
23
|
Young SK, Mauritz KA. Dynamic mechanical analyses of Nafion®/organically modified silicate nanocomposites. ACTA ACUST UNITED AC 2001. [DOI: 10.1002/polb.1102] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
24
|
Schmidt H. Nanoparticles by chemical synthesis, processing to materials and innovative applications. Appl Organomet Chem 2001. [DOI: 10.1002/aoc.169] [Citation(s) in RCA: 118] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
25
|
Organic-inorganic hybrid materials: perfluorinated ionomers as sol-gel polymerization templates for inorganic alkoxides. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 1998. [DOI: 10.1016/s0928-4931(98)00042-3] [Citation(s) in RCA: 175] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
26
|
TGA–FTi.r. investigation of the thermal degradation of Nafion® and Nafion®/[silicon oxide]-based nanocomposites. POLYMER 1998. [DOI: 10.1016/s0032-3861(98)00055-x] [Citation(s) in RCA: 125] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
27
|
Electrochemical impedance studies of hybrids of perfluorosulfonic acid ionomer and silicon oxide by sol-gel reaction from solution. J Electroanal Chem (Lausanne) 1998. [DOI: 10.1016/s0022-0728(97)00513-5] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|