Anion exchange membranes by bromination of benzylmethyl-containing poly(arylene ether)s for alkaline membrane fuel cells
Anion exchange membranes by bromination of benzylmethyl-containing poly(arylene ether)s for alkaline membrane fuel cells
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用于碱性膜燃料电池的含苄甲基聚亚芳基醚溴化阴离子交换膜
DOI：
10.1039/c4ra00833b
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发表时间：
2014-07
期刊：
影响因子：
--
通讯作者：
Shijun Liao
中科院分区：
文献类型：
--
作者：
Qiang Long;Jinxiong Tao;Guanghui Ni;Shijun Liao
通过缩聚、苯溴化、季铵化和碱化等工艺合成了含四甲基三苯基甲烷的功能化季铵盐聚芳烯醚（QBMPAEs）。QBMPAEs离聚体的结构经1H NMR确证。评价了QBMPAEs膜的吸水性、离子交换能力、氢氧离子电导率、机械性能以及热稳定性和化学稳定性。这些离聚体的iec值在0.90 ~ 1.73 mmol g−1之间，可以通过溴化反应的条件来控制。QBMPAEs膜的氢氧离子传递活化能（Ea）为8.01 ~ 10.02 kJ mol−1。QBMPAE-d膜的IEC值为1.73 mmol g−1，具有砜/酮结构，在80℃时电导率最高（46.6 mS cm−1）。QBMPAE-d膜在1-10 M NaOH室温条件下处理30天，电导率高于母膜。采用QBMPAE-d自主制造的膜电极组件（MEA）的H2/空气单燃料电池，在70°C下，阳极为0.1 mg (Pt) cm - 2，阴极为0.2 mg (Pt) cm - 2，峰值功率密度为20.1 mW cm - 2。离子聚物膜的性质证明了它们在碱性燃料电池中的潜在应用。
Functionalized quaternary ammonium poly(arylene ether)s (QBMPAEs) containing tetramethyl triphenyl methane moieties are synthesized via polycondensation, benzylic bromination, quaternization, and alkalization. The structures of the QBMPAEs ionomers have been confirmed by 1H NMR. The water uptakes, ion exchange capacities (IEC), hydroxide ion conductivities, and mechanical properties, as well as the thermal and chemical stabilities of the QBMPAEs membranes have been assessed. The IECs of the ionomers range from 0.90 to 1.73 mmol g−1 and can be controlled via the conditions of the bromination reaction. The hydroxide ion transport activation energy (Ea) of the QBMPAEs membranes varies from 8.01 to 10.02 kJ mol−1. The QBMPAE-d membrane with an IEC value of 1.73 mmol g−1 bears a sulfone/ketone structure and demonstrates the highest conductivity (46.6 mS cm−1) at 80 °C. The QBMPAE-d membranes conditioned in 1–10 M NaOH at room temperature for 30 days display conductivity higher than that of the parent membrane. An H2/air single fuel cell with a membrane electrode assembly (MEA) made entirely in-house from QBMPAE-d achieves a peak power density of 20.1 mW cm−2 with 0.1 mg (Pt) cm−2 as the anode and 0.2 mg (Pt) cm−2 as the cathode at 70 °C. The properties of the ionomers membranes demonstrate their potential applications in alkaline fuel cells.
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影响因子：
3
作者：
Wenjia Ma;Chengji Zhao;Haidan Lin;Gang Zhang;H. Na
通讯作者：
Wenjia Ma;Chengji Zhao;Haidan Lin;Gang Zhang;H. Na
影响因子：
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作者：
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Lu Wang;Y. Meng;Shuanjin Wang;X. Shang;Lin Li;A. S. Hay
影响因子：
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作者：
Jingling Yan;M. Hickner
通讯作者：
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影响因子：
3
作者：
Hongwei Zhang;Zhen-tao Zhou
通讯作者：
Hongwei Zhang;Zhen-tao Zhou
用于直接甲醇碱性燃料电池的高耐用聚乙烯醇/季化羟乙基纤维素乙氧基化物阴离子交换膜
DOI：
10.1016/j.jpowsour.2012.11.041
发表时间：
2013-04
期刊：
J. Power Sources
影响因子：
--
作者：
Lingling Liu;Gaopeng Jiang;Jing Zhang;Yuyu Liu
通讯作者：
Yuyu Liu