Synthesis and Solid-State NMR Studies of Proton-Conducting Mesoporous Niobium Oxide Polymer Composites with Nafion-Like Thermal Durability

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Synthesis and Solid-State NMR Studies of Proton-Conducting Mesoporous Niobium Oxide Polymer Composites with Nafion-Like Thermal Durability. / Turley, J.P.; Romer, F.; Trudeau, M.L. et al.
In: ChemNanoMat, Vol. 1, No. 6, 10.2015, p. 430-437.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Bibtex

@article{e257d92349dd43b89ee25629e43926b4,

title = "Synthesis and Solid-State NMR Studies of Proton-Conducting Mesoporous Niobium Oxide Polymer Composites with Nafion-Like Thermal Durability",

abstract = "Proton conductivity and thermal durability studies were performed on a series of mesoporous Nb2O5 composites with naphthalene sulfonate formaldehyde resin polymerized within the pores. The proximity of the sulfonate groups of the polymer to the walls of the oxide mesostructure was deliberately tailored to ensure superior dehydration resistance crucial to proton conductivity. Initially characterized by nitrogen adsorption, XRD, TGA and STEM, subsequent study using impedance spectroscopy over a temperature range of 20–150 °C established their proton conductivity performance. The most promising sample displayed a conductivity of 21.77 mS cm−1 at 80 °C surpassing the literature value for Nafion 117 (8 mS cm−1) as measured in our labs using the same setup. Subsequent thermal durability tests demonstrated that this composite maintains superior conductivity to Nafion 117 at 80 °C for the length of the study (24 h). These observations were rationalized by in depth solid-state NMR studies. {\textcopyright} 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",

keywords = "impedance spectroscopy, mesoporous materials, proton conductivity, solids state NMR, thermal durability, Gas adsorption, Light polarization, Mesoporous materials, Naphthalene, Niobium compounds, Niobium oxide, Nuclear magnetic resonance spectroscopy, Polymers, Proton conductivity, Spectroscopy, Impedance spectroscopy, Naphthalene sulfonates, Nitrogen adsorption, Polymer composite, Proton conducting, Sulfonate groups, Temperature range, Thermal durability, Durability",

author = "J.P. Turley and F. Romer and M.L. Trudeau and M.E. Smith and J.V. Hanna and D.M. Antonelli",

year = "2015",

month = oct,

doi = "10.1002/cnma.201500077",

language = "English",

volume = "1",

pages = "430--437",

journal = "ChemNanoMat",

issn = "2199-692X",

publisher = "Wiley-VCH Verlag",

number = "6",

}

RIS

TY - JOUR

T1 - Synthesis and Solid-State NMR Studies of Proton-Conducting Mesoporous Niobium Oxide Polymer Composites with Nafion-Like Thermal Durability

AU - Turley, J.P.

AU - Romer, F.

AU - Trudeau, M.L.

AU - Smith, M.E.

AU - Hanna, J.V.

AU - Antonelli, D.M.

PY - 2015/10

Y1 - 2015/10

N2 - Proton conductivity and thermal durability studies were performed on a series of mesoporous Nb2O5 composites with naphthalene sulfonate formaldehyde resin polymerized within the pores. The proximity of the sulfonate groups of the polymer to the walls of the oxide mesostructure was deliberately tailored to ensure superior dehydration resistance crucial to proton conductivity. Initially characterized by nitrogen adsorption, XRD, TGA and STEM, subsequent study using impedance spectroscopy over a temperature range of 20–150 °C established their proton conductivity performance. The most promising sample displayed a conductivity of 21.77 mS cm−1 at 80 °C surpassing the literature value for Nafion 117 (8 mS cm−1) as measured in our labs using the same setup. Subsequent thermal durability tests demonstrated that this composite maintains superior conductivity to Nafion 117 at 80 °C for the length of the study (24 h). These observations were rationalized by in depth solid-state NMR studies. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

AB - Proton conductivity and thermal durability studies were performed on a series of mesoporous Nb2O5 composites with naphthalene sulfonate formaldehyde resin polymerized within the pores. The proximity of the sulfonate groups of the polymer to the walls of the oxide mesostructure was deliberately tailored to ensure superior dehydration resistance crucial to proton conductivity. Initially characterized by nitrogen adsorption, XRD, TGA and STEM, subsequent study using impedance spectroscopy over a temperature range of 20–150 °C established their proton conductivity performance. The most promising sample displayed a conductivity of 21.77 mS cm−1 at 80 °C surpassing the literature value for Nafion 117 (8 mS cm−1) as measured in our labs using the same setup. Subsequent thermal durability tests demonstrated that this composite maintains superior conductivity to Nafion 117 at 80 °C for the length of the study (24 h). These observations were rationalized by in depth solid-state NMR studies. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

KW - impedance spectroscopy

KW - mesoporous materials

KW - proton conductivity

KW - solids state NMR

KW - thermal durability

KW - Gas adsorption

KW - Light polarization

KW - Mesoporous materials

KW - Naphthalene

KW - Niobium compounds

KW - Niobium oxide

KW - Nuclear magnetic resonance spectroscopy

KW - Polymers

KW - Proton conductivity

KW - Spectroscopy

KW - Impedance spectroscopy

KW - Naphthalene sulfonates

KW - Nitrogen adsorption

KW - Polymer composite

KW - Proton conducting

KW - Sulfonate groups

KW - Temperature range

KW - Thermal durability

KW - Durability

U2 - 10.1002/cnma.201500077

DO - 10.1002/cnma.201500077

M3 - Journal article

VL - 1

SP - 430

EP - 437

JO - ChemNanoMat

JF - ChemNanoMat

SN - 2199-692X

IS - 6

ER -

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