H2SO4-doped polybenzimidazole membranes for hydrogen production with acid-alkaline amphoteric water electrolysis
H2SO4-doped polybenzimidazole membranes for hydrogen production with acid-alkaline amphoteric water electrolysis
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H2SO4掺杂聚苯并咪唑膜用于酸碱两性水电解制氢
DOI：
10.1016/j.memsci.2020.118642
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发表时间：
2021-01
影响因子：
9.5
通讯作者：
Wang Baoguo
中科院分区：
文献类型：
--
作者：
Wan Lei;Xu Ziang;Wang Peican;Lin Yuqun;Wang Baoguo
酸碱两性电解被认为是工业规模高效制氢的潜在途径；然而，目前合成或后功能化的膜材料在电解性能和耐久性方面都难以满足要求。在此，我们合成了一系列h2so4掺杂的pbi基膜，包括聚（2,2 ' -（间苯）-5,5 ' -联苯并咪唑）（m-PBI）和聚（4,4 ' -二苯基醚-5,5 ' -联苯并咪唑）（OPBI），用于酸碱两性电解系统。表征了m- pbi和OPBI膜的h2so4掺杂含量、吸水率、溶胀率、化学耐久性和质子电导率，并与全氟磺化膜（Nafion 115）进行了比较。具体来说，在3.0 M h2so4中掺杂的他们- pbi膜在60°C两性电解时获得了800 mA cm - 2at的电流密度，电池电压为2.0 V，优于商业装置的性能。此外，该系统在100 mA cm−2电流密度下运行40小时，能耗为3.35 kWh m−3H2，显示出长期稳定性，为低能耗和规模化制氢技术提供了可能。
Acid-alkaline amphoteric water electrolysis is considered as a potential approach for efficient hydrogen production at industrial scale; however, to date synthesized or post-functionized polymer for constructing membranes can hardly meet the requirement of either electrolysis performance or durability aspects. Herein, we synthesize a series of H2SO4-doped PBI-based membranes, including poly (2,2’-(m-phenylene)-5,5’-bibenzimidazole) (m-PBI) and poly (4,4’-diphenylether-5,5’-bibenzimidazole) (OPBI), for application in acid-alkaline amphoteric water electrolysis system. The H2SO4doping content, water uptake, swelling ratio, chemical durability and proton conductivity ofm-PBI and OPBI membranes are characterized and compared with the perfluorinated sulfonated membrane (Nafion 115). Specifically, them-PBI membrane doped in 3.0 M H2SO4attains a current density of 800 mA cm−2at cell voltage of 2.0 V at 60 °C when applied in an amphoteric water electrolysis, which is superior to the performance of commercial units. Moreover, such system reveals a long-term stability when operating at the current density of 100 mA cm−2for 40 h, with an energy consumption of 3.35 kWh m−3H2, offering a possibility for low-energy consumption and scaled hydrogen production technology.
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影响因子：
4.2
作者：
Lai, Yiming;Wan, Lei;Wang, Baoguo
通讯作者：
Wang, Baoguo
影响因子：
9.5
作者：
Diaz, L. A.;Coppola, R. E.;Ocon, P.
通讯作者：
Ocon, P.
MoS2负载CoS2碳布作为析氢反应的高性能电极
影响因子：
7.2
作者：
Wang Peican;Wan Lei;Lin Yuqun;Wang Baoguo
通讯作者：
Wang Baoguo
影响因子：
9.2
作者：
F. Tietz;D. Sebold;A. Brisse;J. Schefold
通讯作者：
F. Tietz;D. Sebold;A. Brisse;J. Schefold
DOI：
10.1016/j.ijhydene.2011.08.080
发表时间：
2011-11
期刊：
Fuel and Energy Abstracts
影响因子：
--
作者：
D. Pletcher;Xiaohong Li
通讯作者：
D. Pletcher;Xiaohong Li