Proton conductivity of naphthalene sulfonate formaldehyde resin-doped mesoporous niobium and tantalum oxide composites.
Proton conductivity of naphthalene sulfonate formaldehyde resin-doped mesoporous niobium and tantalum oxide composites.
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DOI：
10.1002/cssc.201402546
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发表时间：
2015
期刊：
影响因子：
8.4
通讯作者：
J. Turley;Frederik Romer;M. Trudeau;M. Dias;Mark E. Smith;J. Hanna;D. Antonelli
中科院分区：
文献类型：
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作者：
J. Turley;Frederik Romer;M. Trudeau;M. Dias;Mark E. Smith;J. Hanna;D. Antonelli
报道了萘磺酸甲醛树脂（NSF）中孔铌和钽金属氧化物（mX2 O5）复合材料的质子导电性，该复合材料在大于50℃的温度下耐水分损失。以C6、C12和C18为模板，合成了一系列mX2 O5 -NSF复合材料，研究了改变mX2 O5体系的孔径和介观结构中金属元素对质子电导率的影响。通过XRD、热重分析、氮吸附和扫描电镜对这些材料进行了表征，然后用阻抗谱法研究了在25 ~ 150℃不同温度下的质子电导率值。最有希望的样品在100°C时的电导率为21.96 mS cm(-1)，超过了Nafion 117的文献值（约8 mS cm(-1)）。(1) H和（13）C对mX2 O5 -NSF复合材料的固体核磁共振研究表明，NSF在与mX2 O5表面接触时保持了低聚性质，从而有利于导电。
Proton conductivity in a series of mesoporous niobium and tantalum metal oxide (mX2 O5 ) composites of naphthalene sulfonic acid formaldehyde resin (NSF) that are resistant to moisture loss at temperatures greater than 50 °C is reported. The investigation focuses on the effect to proton conductivity by changing pore size and metal in the mesostructure of the mX2 O5 system and thus, a series of mX2 O5 -NSF composites were synthesized with C6 , C12 , and C18 templates. These were characterized by XRD, thermogravimetric analysis, nitrogen adsorption, and scanning TEM and then studied using impedance spectroscopy to establish proton conductivity values at various temperatures ranging from 25 to 150 °C. The most promising sample displayed a conductivity of 21.96 mS cm(-1) at 100 °C, surpassing the literature value for Nafion 117 (ca. 8 mS cm(-1) ). (1) H and (13) C solid state NMR studies the mX2 O5 -NSF composites demonstrate that the oligomeric nature of the NSF is preserved while in contact with the mX2 O5 surface, thus facilitating conductivity.