Meng Chao, Li Shang, Wu Qianyun, Li Mengyu, Tian Shenao, Tang Haolin, Pan Mu
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Luoshi Road 122#, Wuhan 430070, China.
National Energy Key Laboratory for New Hydrogen-Ammonia Energy Technologies, Foshan Xianhu Laboratory, No. 1 Yangming Road, Danzao Town, Nanhai District, Foshan 528200, China.
Polymers (Basel). 2025 Mar 21;17(7):840. doi: 10.3390/polym17070840.
Accurately determining the Hansen solubility parameters (HSPs) of fuel cell ionomers is crucial for optimizing the dispersion and dispersive state of the ionomer in fuel cell catalyst inks. This directly impacts the structure and coating process of the catalyst layer in proton exchange membrane fuel cells (PEMFCs). The Hansen solubility parameters (HSPs) of the Nafion ionomer were calculated by the Hansen solubility parameter software (HSPiP), inverse gas chromatography (IGC), and group contribution methods. The applicability and accuracy of the different algorithms are discussed. It was found that the solubility parameters (SPs) measured by the HSPiP method were higher, while the SPs measured by the IGC and group contribution methods were lower. However, for the ionomer with both a hydrophobic backbone and hydrophilic side chain, the HSPiP method offered a more reasonable HSP determination method. The dual HSPs of Nafion calculated by the HSPiP method were found to be = 16.4 MPa (dispersion force), = 10.5 MPa (polar interaction), and = 8.9 MPa (hydrogen bonding) for the hydrophobic backbone and = 15.2 MPa, = 11.7 MPa, and = 15.9 MPa for the hydrophilic side chain. These results provide a thermodynamic basis for solvent design in fuel cell catalyst-layer fabrication.
准确测定燃料电池离聚物的汉森溶解度参数（HSPs）对于优化离聚物在燃料电池催化剂油墨中的分散和分散状态至关重要。这直接影响质子交换膜燃料电池（PEMFCs）中催化剂层的结构和涂覆过程。通过汉森溶解度参数软件（HSPiP）、反相气相色谱法（IGC）和基团贡献法计算了Nafion离聚物的汉森溶解度参数（HSPs）。讨论了不同算法的适用性和准确性。结果发现，通过HSPiP方法测得的溶解度参数（SPs）较高，而通过IGC和基团贡献法测得的SPs较低。然而，对于具有疏水主链和亲水侧链的离聚物，HSPiP方法提供了一种更合理的HSP测定方法。通过HSPiP方法计算得到的Nafion的双重HSPs，对于疏水主链分别为 = 16.4 MPa（色散力）、 = 10.5 MPa（极性相互作用）和 = 8.9 MPa（氢键），对于亲水侧链分别为 = 15.2 MPa、 = 11.7 MPa和 = 15.9 MPa。这些结果为燃料电池催化剂层制造中的溶剂设计提供了热力学基础。
