Justin Jose Sheela Anie Shejoe, Moorthy Siva, Maria Mahimai Berlina, Sekar Karthikeyan, Kannaiyan Dinakaran, Deivanayagam Paradesi
Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Chengalpattu District, Kattankulathur 603203, Tamilnadu, India.
Department of Physics and Nanotechnology, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Chengalpattu District, Kattankulathur 603203, Tamilnadu, India.
ACS Omega. 2023 Jul 22;8(30):27510-27518. doi: 10.1021/acsomega.3c03143. eCollection 2023 Aug 1.
This research work focuses on developing a robust polymer electrolyte membrane (PEM) with high proton efficiency toward proton exchange membrane fuel cells (PEMFCs). In this study, poly ether sulfone (PES) was sulfonated by chlorosulfonic acid to yield sulfonated poly ether sulfone (SPES) followed by incorporation with bismuth-based additives such as bismuth trimesic acid (BiTMA) and bismuth molybdenum oxide (BiMoO). The composite membrane was thoroughly investigated for its structural and physicochemical properties such as FT-IR, SEM, TGA, contact angle, water uptake, oxidative stability, ion-exchange capacity, and swelling ratio. Incorporation of additives into the polymer was confirmed by XPS and XRD analysis. The proton conductance of the pristine SPES is 4.19 × 10 S cm, whereas that of the composite membrane SPES/BiTMA-10 is 10 × 10 S cm and that of SPES/BiMoO-15 is 7.314 × 10 S cm; both the composite membranes exhibit higher proton conductivity than the pristine SPES membrane. The physicochemical characteristics and impedance measurements of the electrolyte reported can be viable to the PEM membrane.
这项研究工作专注于开发一种对质子交换膜燃料电池（PEMFC）具有高质子效率的坚固聚合物电解质膜（PEM）。在本研究中，聚醚砜（PES）用氯磺酸磺化以产生磺化聚醚砜（SPES），随后与铋基添加剂如均苯三甲酸铋（BiTMA）和铋钼氧化物（BiMoO）混合。对复合膜的结构和物理化学性质进行了全面研究，如傅里叶变换红外光谱（FT-IR）、扫描电子显微镜（SEM）、热重分析（TGA）、接触角、吸水率、氧化稳定性、离子交换容量和溶胀率。通过X射线光电子能谱（XPS）和X射线衍射（XRD）分析证实了添加剂在聚合物中的掺入。原始SPES的质子电导率为4.19×10 S/cm，而复合膜SPES/BiTMA-10的质子电导率为10×10 S/cm，SPES/BiMoO-15的质子电导率为7.314×10 S/cm；两种复合膜的质子传导率均高于原始SPES膜。所报道的电解质的物理化学特性和阻抗测量结果对PEM膜可能是可行的。
