Hydrogen production via water electrolysis at high temperature and pressure

高温高压电解水制氢

• 批准号: 554473-2020
• 负责人: Mérida, WalterWR
• 金额: $ 6.06万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=760013
• 关键词: Hydrogen; production; via; water; electrolysis

As atmospheric carbon dioxide levels continue to rise, reaching the 2°C targets (announced in Paris in 2015) will require breakthroughs in disruptive technologies to reduce greenhouse gas (GHG) emissions. In collaboration with our industrial partner, Carbon Engineering (CE), we are improving the technologies required to absorb CO2 through Direct Air Capture (DAC) and produce fuels to reduce emissions from distributed sources, e.g., aeroplanes, trucks, and ships. CE has built and is operating a DAC demonstration plant in Squamish, BC, with the goal to capture 500 kg CO2 per day. The most challenging scientific and technical barriers for the CO2-to-fuels pathway include developing a reliable and cost-efficient way to produce carbon-neutral hydrogen for the conversion of CO2 into fuels. Currently, water electrolysis is utilized in the process as a source of hydrogen, but it is expensive. By increasing the temperature and pressure of the electrolytic process, one can achieve higher conversion efficiencies and subsequently cheaper hydrogen. However, only a couple of research scale demonstrations exist so far and none with hydrogen collection.The proposed research aims to reduce the cost and improve the efficiency of air-to-fuel conversion by exploring a pathway for cheaper hydrogen. This is done by using the first system in the world able to run electrochemistry and collect hydrogen at conditions up to and beyond the supercritical point of water (374ºC/220 bar). The aim of the project is to i) evaluate and establish the optimum conditions for water electrolysis at high temperatures, ii) explore and identify optimum electrode materials, and iii) experimentally demonstrate and economically assess hydrogen production at high temperatures.

随着大气二氧化碳水平继续上升，要实现2摄氏度的目标(2015年在巴黎宣布)，将需要在减少温室气体(GHG)排放的颠覆性技术方面取得突破。与我们的工业合作伙伴碳工程(CE)合作，我们正在改进通过直接空气捕集(DAC)吸收二氧化碳所需的技术，并生产燃料以减少飞机、卡车和船舶等分布式来源的排放。CE已经在不列颠哥伦比亚省斯夸米什建造并运营了一座DAC示范工厂，目标是每天捕获500公斤二氧化碳。二氧化碳转化为燃料的最具挑战性的科学和技术障碍包括开发一种可靠和成本高效的方法来生产碳中性氢气，用于将二氧化碳转化为燃料。目前，在该工艺中，水电解被用作氢气的来源，但价格昂贵。通过提高电解过程的温度和压力，可以实现更高的转换效率，从而降低氢气成本。然而，到目前为止，只有几个研究规模的示范存在，还没有关于氢气收集的研究。拟议的研究旨在通过探索一种更便宜的氢气的途径来降低成本并提高空转燃料的效率。这是通过使用世界上第一个能够在达到或超过水的超临界温度(374°C/220 bar)的条件下进行电化学和收集氢气的系统来实现的。该项目的目的是i)评估和确定高温下电解水的最佳条件，ii)探索和确定最佳电极材料，以及iii)实验演示和经济评估高温下的氢气生产。