College of Automobile and Traffic Engineering, Nanjing Forestry University, Nanjing 210037, China.
Int J Mol Sci. 2022 Aug 25;23(17):9618. doi: 10.3390/ijms23179618.
In this paper, a high-temperature proton-exchange membrane fuel cell (HT-PEMFC) system using fluorine-containing polybenzimidazole (6FPBI) composite membranes doped with cross-linkable polymer ionic liquid (cPIL) is developed and studied. The reliability of the model is verified by a comparison with the experimental data. The performance of the HT-PEMFC system using 6FPBI membranes with different levels of cPIL is analyzed. The results show that when the HT-PEMFC uses 6FPBI membranes with a cPIL content of 20 wt % (6FPBI-cPIL 20 membranes), the single cell power density is 4952.3 W·m-2. The excessive cPIL content will lead to HT-PEMFC performance degradation. The HT-PEMFC system using the 6FPBI-cPIL 20 membranes shows a higher performance, even at higher temperatures and pressures, than the systems using 6FPBI membranes. In addition, the parametric study results suggest that the HT-PEMFC system should be operated at a higher inlet temperature and hydrogen pressure to increase system output power and efficiency. The oxygen inlet pressure should be reduced to decrease the power consumption of the ancillary equipment and improve system efficiency. The proposed model can provide a prediction for the performance of HT-PEMFC systems with the application of phosphoric-acid-doped polybenzimidazole (PA-PBI) membranes.
本文开发并研究了一种使用含氟聚苯并咪唑（6FPBI）复合膜掺杂可交联聚合物离子液体（cPIL）的高温质子交换膜燃料电池（HT-PEMFC）系统。通过与实验数据的比较验证了模型的可靠性。分析了具有不同交联度PIL 含量的 6FPBI 膜的 HT-PEMFC 系统的性能。结果表明，当 HT-PEMFC 使用交联度 PIL 含量为 20wt%（6FPBI-cPIL 20 膜）的 6FPBI 膜时，单电池功率密度为 4952.3 W·m-2。过多的 cPIL 含量会导致 HT-PEMFC 性能下降。与使用 6FPBI 膜的系统相比，使用 6FPBI-cPIL 20 膜的 HT-PEMFC 系统在更高的温度和压力下表现出更高的性能。此外，参数研究结果表明，HT-PEMFC 系统应在更高的入口温度和氢气压力下运行，以提高系统输出功率和效率。应降低氧气入口压力，以降低辅助设备的功耗并提高系统效率。所提出的模型可以为使用磷酸掺杂聚苯并咪唑（PA-PBI）膜的 HT-PEMFC 系统的性能提供预测。
