Green hydrogen is currently enjoying a worldwide momentum due to its potential in supporting the United Nations Sustainable Development Goals. It is one of key technologies toward the establishment of a global low-carbon energy infrastructure. As a viable solution to achieve green hydrogen from renewable sources such as wind and solar powers, the process of proton exchange membrane (PEM) water electrolysis enables scalable stacked devices and systems for high pressure hydrogen production. By developing a catalyst-coated proton exchange membrane, we constructed membrane electrode assemblies (MEAs) and assembled them into a five-cell stack device to optimize the materials and components. After device characterization and optimization, a 20 kW PEM water electrolysis system was built, which, under high pressure operating conditions, exhibited favorable hydrogen production performance with 82.9% energy efficiency at the current density of 1000 mA/cm² and reaction temperature of 70 °C. The resulting hydrogen production rate of the system with catalyst-coated membranes reached 3.09 N m³/h, while the power consumption for hydrogen production was 4.39 kWh/N m³. The results indicate the feasibility of PEM water electrolysis technology for green hydrogen production, for which we envision development into commercial applications in the near future.

中文翻译：

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用于高压水电解制氢的催化剂涂层质子交换膜

由于其在支持联合国可持续发展目标方面的潜力，绿色氢目前在全球范围内享有盛誉。它是建立全球低碳能源基础设施的关键技术之一。作为从风能和太阳能等可再生能源中获得绿色氢的可行解决方案，质子交换膜 (PEM) 水电解过程能够实现可扩展的堆叠装置和高压制氢系统。通过开发涂有催化剂的质子交换膜，我们构建了膜电极组件 (MEA)，并将它们组装成五节电池组装置，以优化材料和组件。经过装置表征和优化，建立了一个 20 kW PEM 水电解系统，该系统在高压操作条件下，²，反应温度70℃。得到的带有催化剂涂层膜的系统的制氢速率达到3.09 N m ³ /h，而制氢的功率消耗为4.39 kWh/N m ³。结果表明 PEM 水电解技术用于绿色制氢的可行性，我们设想在不久的将来发展为商业应用。