Engineering mesoporosity promoting high-performance polymer electrolyte fuel cells
Engineering mesoporosity promoting high-performance polymer electrolyte fuel cells
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工程介孔促进高性能聚合物电解质燃料电池
DOI：
10.1016/j.ijhydene.2017.06.220
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发表时间：
2017-08
影响因子：
7.2
通讯作者：
Zou Zhigang
中科院分区：
文献类型：
--
作者：
Wan Hong;Yao Yingfang;Liu Jianguo;You Yong;Li Xiaoyan;Shao Kenan;Zou Zhigang
质子交换膜（PEM）是燃料电池（FC）的重要组成部分，在当前的氢能应用中吸引了大量的研究兴趣。质子交换膜在各种操作条件下的高质子传导率极大地影响了燃料电池的综合性能，从而决定了其商业应用。因此，制备了介孔超强酸硫酸化氧化锆（S-ZrO 2），并将其引入到Nafion基质中构建杂化PEM。S-ZrO 2的介孔性具有高度可控性。较高的介孔率导致S-ZrO 2表面磺酸基（单键SO 3 H）聚集量增加。当引入到PEM中时，高度介孔的S-ZrO 2在化学上增加了含质子基团的数量，在结构上提高了离子通道的密度，并将水作为有效的水库，从而在可变条件下保持高的质子传导率，从而保持组装的FC的性能。S-ZrO 2具有最高的表面积，为181 m2 g −1。负载有10wt%这种S-ZrO 2的杂化PEM实现了0.83 S cm-1的最高质子传导率，是原始Nafion®膜的1.77倍。具有混合PEM的FC在0.6 V下的功率密度为786 mW cm-2，远高于商用Nafion 211。
Proton exchange membranes (PEMs) are a vital component in fuel cells (FCs) that attract significant research interest for the present hydrogen energy use. High proton conductivity of PEMs under various operation conditions highly influences the integrated performance of FCs that determines their commercial applications. Hence mesoporous superacidic sulfated zirconia (S-ZrO2) is fabricated and introduced into Nafion matrix to construct hybrid PEMs. The mesoporosity of S-ZrO2is demonstrated highly controllable. High mesoporosity leads to increased amount of sulfonic groups (single bondSO3H) aggregating on S-ZrO2surface. When introduced in PEMs, the highly mesoporous S-ZrO2chemically enhances the amount of proton-containing groups, structurally improves the density of ion channels, and reserves water as effective reservoirs, which resultantly maintains high proton conductivity under variable conditions, and thus the performance of assembled FCs. The S-ZrO2exhibits the highest surface area of 181 m2g−1. The hybrid PEMs loaded with 10 wt% such S-ZrO2achieve a highest proton conductivity of 0.83 S cm−1that is ∼7 time of that for pristine Nafion®membranes. The power density at 0.6 V of FCs with the hybrid PEMs is 786 mW cm−2, much higher than that for commercial Nafion 211.
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影响因子：
2.9
作者：
Yogeswaran, Umasankar;Thiagarajan, Soundappan;Chen, Shen-Ming
通讯作者：
Chen, Shen-Ming
影响因子：
9.5
作者：
Kui Xu;Chalatorn Chanthad;M. R. Gadinski;M. Hickner;Qing Wang
通讯作者：
Kui Xu;Chalatorn Chanthad;M. R. Gadinski;M. Hickner;Qing Wang
影响因子：
7.2
作者：
Shou‐Heng Liu;C. Chiang;M. Wu;Shang-Bin Liu
通讯作者：
Shou‐Heng Liu;C. Chiang;M. Wu;Shang-Bin Liu
DOI：
10.1016/j.memsci.2010.10.016
发表时间：
2011
期刊：
Fuel and Energy Abstracts
影响因子：
--
作者：
Dan-Dan Liu-Dan;L. Geng;Yuqin Fu;Xin Dai;C. Lü
通讯作者：
Dan-Dan Liu-Dan;L. Geng;Yuqin Fu;Xin Dai;C. Lü
影响因子：
7.3
作者：
Guo, Xiaoming;Mao, Dongsen;Wu, Guisheng
通讯作者：
Wu, Guisheng