本TIR的结果是建立质子交换膜（PEM）测试方法，并在运行和维护期间表征HRS中使用的化学品，这些化学品可能会影响商用PEM燃料电池车辆的性能。SAE J2719等氢气质量标准提供了具有最大杂质水平的污染物清单，以确保燃料电池汽车的安全运行。这些污染物主要来自制氢。在这些质量标准中，对HRS安装、操作和维护过程中产生的污染物关注较少。HRS运行期间使用的常见化学品为制冷剂、润滑剂等，HRS安装和维护期间使用的化学品为溶剂、清洁剂、润滑剂等。发现其中一些化学品对PEM燃料电池有不利影响。尽管本TIR中的方法是对化学品的直接评估，而不是规定污染物水平，但本报告中化学品的测试方法和特性的制定基于SAE J2719中使用的类似方法。 这些方法考虑了每种被测化学物质的燃料电池性能特征以及官能团对质子交换膜燃料电池的影响。污染物对燃料电池的不利影响与暴露于化学品后的性能下降有关。

The outcome of this TIR is to establish proton exchange membrane (PEM) testing methods and characterization of chemicals used in HRS, during operation and maintenance that can influence the performance of commercial PEM fuel cell vehicles.Hydrogen quality standards such as SAE J2719 provide list of contaminants with maximum impurity levels that ensure safe operation of fuel cell vehicles. These contaminants are primarily from the hydrogen production. Less attention in these quality standards were given to the contaminants generated from the installation, operation and maintenance of HRS. Common chemicals used during HRS operation are refrigerants, lubricants, etc., and during HRS installation and maintenance are solvents cleaning agents, lubricants, etc. Some of these chemicals are found to have adverse impacts on PEM fuel cells.The development of testing methods and characterization of chemicals in this report are based on similar methods used in SAE J2719 although the approach in this TIR is a direct evaluation of the chemical rather than specifying the contaminant level. These methods consider fuel cell performance characteristics for each chemical tested and the impacts of functional groups on PEM fuel cells. Adverse impact of contaminants on fuel cells are associated with performance drop after exposure to the chemical.