Advanced High Pressure and Cost-Effective PEM Water Electrolysis Technology

与下游气体压缩相比，通过电解水分解直接生产高压氢气可以节省相应数量的能源。该项目的目标是开发一种新型聚合物电解质膜（PEM）电解槽，能够在非常高的压力（200巴）下产生氢气，从而减少压缩后的能量消耗。另一个目标是开发一种具有成本效益的技术，使PEM电解槽能够大规模应用。通过最大限度地减少关键原材料、开发廉价的涂层双极板和以高生产率运行电解槽，同时确保高效率（约80% vs. HHV）和安全运行，显著降低了资本成本。ADVANCEPEM的目标是在材料、堆和系统层面开发一套突破性的解决方案，将基本负载的氢气压力提高到200 bar，电流密度提高到5 a cm-2，同时保持标称能耗<50 kWh/kg H2。增强aquvion®聚合物膜具有增强的导电性，高玻璃化转变温度和增加的结晶度，能够承受高差压，是为这种应用而开发的。该方法是在高温90-120°C高压下操作创新膜，以提高能源效率。为了减少氢渗透到阳极和相关的安全问题，在膜和阳极结构中集成了高效的复合催化剂。通过在工业环境中展示50 kW标称容量的高压电解槽，以约24 kg H2/天的生产速率验证了新技术。该项目将提供技术经济分析，以评估电解器CAPEX和OPEX的降低。该联盟由电解槽制造商、膜和催化剂供应商、MEA开发商和演示系统的最终用户组成。

Direct production of highly pressurised hydrogen from electrolytic water splitting can allow saving relevant amounts of energy compared to down-stream gas compression. The aim of this project is to develop a novel polymer electrolyte membrane (PEM) electrolyser able to produce hydrogen at very high pressure (200 bar) thus reducing the post-compression energy consumption. Another goal is to develop a cost-effective technology allowing to achieve large-scale application of PEM electrolysers. A significant reduction of capital costs is achieved by critical raw materials minimisation, developing cheap coated bipolar plates and operating the electrolyser at a high production rate while assuring high efficiency (about 80% vs. HHV) and safe operation. ADVANCEPEM aims at developing a set of breakthrough solutions at materials, stack and system levels to increase hydrogen pressure to 200 bar and current density to 5 A cm-2 for the base load, while keeping the nominal energy consumption <50 kWh/kg H2. Reinforced Aquivion® polymer membranes with enhanced conductivity, high glass transition temperature and increased crystallinity, able to withstand high differential pressures, are developed for this application. The approach is to operate the innovative membrane at high temperature 90-120 °C under high pressure to allow increasing energy efficiency. To mitigate hydrogen permeation to the anode and related safety issues, efficient recombination catalysts are integrated both in the membrane and anode structure. The new technology is validated by demonstrating a high-pressure electrolyser of 50 kW nominal capacity with a production rate of about 24 kg H2/day in an industrial environment. The project will deliver a techno-economic analysis to assess reduction of the electrolyser CAPEX and OPEX. The consortium comprises an electrolyser manufacturer, membrane and catalyst supplier, an MEA developer and an end-user for demonstrating the system.