High Proton Conductivity of 3D Graphene Oxide Intercalated with Aromatic Sulfonic Acids
High Proton Conductivity of 3D Graphene Oxide Intercalated with Aromatic Sulfonic Acids
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芳香族磺酸插层 3D 氧化石墨烯的高质子电导率
DOI：
10.1002/cplu.202200003
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发表时间：
2022
期刊：
影响因子：
3.4
通讯作者：
Hayami Shinya
中科院分区：
文献类型：
--
作者：
Atiqur Rahman Mohammad;Islam Md. Saidul;Fukuda Mashahiro;Yagyu Junya;Feng Zhiqing;Sekine Yoshihiro;Lindoy Leonard F.;Ohyama Junya;Hayami Shinya
开发能够具有高功率密度、足够的机械强度和降低的气体渗透性的高效质子导体是具有挑战性的。在此，我们报告了一系列的芳香族磺酸/氧化石墨烯杂化膜的发展，包括苯磺酸（BS），萘磺酸（NS），萘二磺酸（DS）或芘磺酸（PS）使用一个简单的冷冻干燥方法。对于面外质子电导率，3DGO-BS和3DGO-NS分别产生4.4×10−2S cm− 1和3.1×10−2S cm−1的质子电导率;这代表比三维氧化石墨烯（3DGO）高两倍的值。此外，作为质子交换膜燃料电池（PEMFC）中的膜的各个制备的膜显示出对于3DGO-NS为98.76mW cm-2的最大功率密度，而对于3DGO-BS为92.75mW cm-2，其接近于对于3DGO获得的（50 mW cm-2）的两倍。
The development of efficient proton conductors that are capable of high power density, sufficient mechanical strength, and reduced gas permeability is challenging. Herein, we report the development of a series of aromatic sulfonic acid/graphene oxide hybrid membranes incorporating benzene sulfonic acid (BS), naphthalene sulfonic acid (NS), naphthalene disulfonic acid (DS) or pyrene sulfonic acid (PS) using a facile freeze dried method. For out‐of‐plane proton conductivity, the 3DGO‐BS and 3DGO‐NS yielded proton conductivities of 4.4×10−2S cm−1and 3.1×10−2S cm−1, respectively; this represents a two‐times higher value than that which occurs for three dimensional graphene oxide (3DGO). Additionally, the respective prepared films as membranes in a proton exchange membrane fuel cell (PEMFC) show maximum power density of 98.76 mW cm−2for 3DGO‐NS while it is 92.75 mW cm−2for 3DGO‐BS which are close to double that obtained for 3DGO (50 mW cm−2).