Enhanced proton conductivity of polymer electrolyte membrane doped with titanate nanotubes

Li, Qiong; Xiao, Chuan; Li, Wei; Zhang, Haining; Chen, Feitai; Fang, Pengfei; Pan, Mu

doi:10.1007/s00396-010-2268-9

Cited by 16 publications

(7 citation statements)

References 22 publications

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“…To obtain the amine-tailored titanate nanotubes, titanate nanotubes were first synthesized according to the reported alkaline hydrothermal process [16,33]. In our previous studies [23], physical properties of the so-formed nanotubes were characterized to be 50-140 nm in length, 5 nm in inner diameter, and 338 m 2 g À 1 in surface area.…”

Section: Resultsmentioning

confidence: 99%

“…The so-formed nanocomposite membranes exhibited higher water retention ability and better electrochemical properties at elevated temperature compared to pristine Nafion membrane [13]. It was also found that the addition of nanostructured metal oxide can increase the glass transition temperature of the membrane to about 130 1C, facilitating the application at elevated temperature [14][15][16]. Although the exact role that metal oxide additives played remains unclear, nanostructured metal oxide doped Nafion membranes are promising electrolytes for fuel cells operated at elevated temperature.…”

Section: Introductionmentioning

confidence: 94%

“…We have previously observed that the addition of titanate nanotubes in Nafion membranes could enhance the proton conductivity of the membrane under reduced humidification conditions [16]. The power densities at 0.8 V for fuel cell assembled from composite membrane containing 5 wt% of titanate nanotubes were about 13% and 35% higher than that for plain Nafion cells under 50% relative humidity at 65 1C and 90 1C, respectively.…”

Section: Introductionmentioning

confidence: 94%

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Impregnation of amine-tailored titanate nanotubes in polymer electrolyte membranes

Zhang

et al. 2012

Journal of Membrane Science

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 94%

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Impregnation of amine-tailored titanate nanotubes in polymer electrolyte membranes

Zhang

et al. 2012

Journal of Membrane Science

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“…With the aim of improving those properties extensive research has been devoted to the field of filler functionalization for preparation of polymer-based nanocomposites [14][15][16][17][18]. To our knowledge there are only a few publications reporting on the thermal and mechanical properties of nanocomposites prepared from NaTiNTs, NaTiNRs, or their protonated forms (HTiNTs and HTiNRs) [19][20][21][22].…”

mentioning

confidence: 99%

Synthesis of silane functionalized sodium titanate nanotubes and their influence on thermal and mechanical properties of epoxy nanocomposite

Brnardić

Vesel

Umek

et al. 2013

Phys. Status Solidi A

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Sodium titanate nanotubes (NaTiNTs) were prepared by hydrothermal method and functionalized with three different silane coupling agents. The existence of the chemical bond between silane molecules and nanoparticles was confirmed by scanning electron microscopy (SEM) equipped with electron dispersive X-ray spectroscopy (EDS) mapping, Fourier transform infrared (FTIR) spectroscopy, and simultaneous differential scanning calorimetry-thermogravimetric analysis (DSC-TGA). NaTiNTs before and after functionalization were characterized by X-ray diffraction (XRD) technique. Functionalized NaTiNTs were used to prepare epoxy-based nanocomposites with three different wt.% of nanofillers (1, 2, and 3 wt.% per epoxy). The thermal and mechanical properties of prepared nanocomposites were studied by DSC, DSC-TGA, and dynamic mechanical analysis (DMA). The obtained results were compared to the epoxy. The results showed that the glass transition temperature increased from 72 to 79 8C. Storage modulus increased by 10.4% at 3 wt.% nanotubes. From all results appropriate functionalized NaTiNTs were chosen and nanocomposites for determination of combustion properties by cone calorimeter were prepared (1, 3, and 5 wt.% of nanofiller per epoxy). Significant reduction of the heat release rate (HRR) depending on the inorganic particles loading was observed. The peak value for HRR was reduced by about 40% compared to the epoxy, while ignition time and total heat release (THR) are not significantly affected by the presence of the inorganic particles.

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“…The HTiNTs were used to prepare a Nafion membrane nanocomposite. In this case the mechanical strength remained comparable to the pure Nafion, but the proton conductivity improved .…”

Section: Introductionmentioning

confidence: 77%

Functionalization of sodium titanate nanoribbons with silanes and their use in the reinforcement of epoxy nanocomposites

et al. 2013

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This paper reports on the surface functionalization of sodium titanate nanoribbons (NaTiNRs) with four different silane coupling agents: 3-(aminopropyl)tri-ethoxysilane, triethoxyoctylsilane, 3-glycidyloxypropyltrimethoxysilane, and 3-aminopropylmethyl diethoxysilane. The functionalized NaTiNRs were used to prepare epoxy-based nanocomposites with three different wt% of nanofillers (1, 2 and 3 wt% per epoxy). The properties of the prepared nanocomposites were then compared with the pure epoxy resin. The functionalized NaTiNRs, as well as the epoxy and prepared nanocomposites, were characterized using Fourier-transform infrared spectroscopy, simultaneous differential scanning calorimetry-thermogravimetric analysis (DSC-TGA), scanning electron microscopy (SEM), differential scanning calorimetry (DSC), and dynamic mechanical analysis. The SEM results showed that the 2-and 3-functional silanes are not the best choice for the modification as they glue the NaTiNRs together into clusters. As a consequence, the glass-transition temperatures and the mechanical properties are not strongly influenced by the addition of functionalized NaTiNRs. Nevertheless, the influence of the type of silane can be observed. Furthermore, the thermal stability of the prepared nanocomposites increases with the increased loading of the functionalized NaTiNRs. POLYM. COMPOS., 34:1382COMPOS., 34: -1388COMPOS., 34: , 2013

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Enhanced proton conductivity of polymer electrolyte membrane doped with titanate nanotubes

Cited by 16 publications

References 22 publications

Impregnation of amine-tailored titanate nanotubes in polymer electrolyte membranes

Impregnation of amine-tailored titanate nanotubes in polymer electrolyte membranes

Synthesis of silane functionalized sodium titanate nanotubes and their influence on thermal and mechanical properties of epoxy nanocomposite

Functionalization of sodium titanate nanoribbons with silanes and their use in the reinforcement of epoxy nanocomposites

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