In-situ sulfonation of targeted silica-filled Nafion for high-temperature PEM fuel cell application
In-situ sulfonation of targeted silica-filled Nafion for high-temperature PEM fuel cell application
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用于高温 PEM 燃料电池应用的靶向二氧化硅填充 Nafion 的原位磺化
DOI:
10.1016/j.ijhydene.2019.02.037
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发表时间:
2019-11
影响因子:
7.2
通讯作者:
Grigoriev Sergey A.
中科院分区:
文献类型:
--
作者:
Xu Guoxiao;Wei Zenglv;Li Shuai;Li Jing;Yang Zehui;Grigoriev Sergey A.
Silica targeted filled in Nafion® membrane isin-situ sulfonated (s-WR-Nafion membrane) to improve the proton conductivity at high-temperature and low relative humidity (RH). The silica introduction as water sorbent in the membrane can both stabilize water balance for polymer electrolyte membrane fuel cells (PEMFCs) and prevent the formation of the water crystalline phase in membrane-electrode assemblies (MEAs) in course of sub-zero temperature operation (so-called cold start) owing to chemical water adsorption. On the other hand, water presence in MEAs provides required operating humidity when temperature increases. Due to the synergistic effect of the targeted filled silica and the efficient –SO3H based proton conductive channel, high temperature proton conductivity of the Nafion® membrane is therefore significantly improved at low RH. Particularly, proton conductivity of thes-WR-Nafion membrane is raised to 0.07 S/cm at 110 °C and 60% RH. At the same time, mechanical, oxidative and thermal stabilities of thes-WR-Nafion membrane are not decayed due to the integrity of the original structure of Nafion®. As a result, the maximum output power of thes-WR-Nafion membrane-based fuel cell isca.65% higher than that of the pristine Nafion® membrane at 110 °C and 20% RH. Above all, thes-WR-Nafion membrane exhibit promising application potential for high-temperature PEMFC.
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影响因子:
9.5
作者:
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通讯作者:
Cheng Hansong
影响因子:
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7.2
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影响因子:
7.2
作者:
Chien, Hung-Chung;Tsai, Li-Duan;Chang, Feng-Chih
通讯作者:
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