EXSOLUTION-BASED NANOPARTICLES FOR LOWEST COST GREEN HYDROGEN VIA ELECTROLYSIS

基于萃取的纳米颗粒通过电解生产成本最低的绿氢

• 批准号: 10102891
• 金额: $ 54.34万
• 依托单位: UNIVERSITY OF ST ANDREWS
• 依托单位国家: 英国
• 项目类别: EU-Funded
• 财政年份: 2024
• 资助国家: 英国
• 起止时间: 2024 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=10102891
• 关键词: EXSOLUTION; BASED; NANOPARTICLES; LOWEST; COST

Today’s alkaline electrolysers favour current densities over efficiency: to achieve commercially relevant current densities, these systems typically operate at voltages exceeding 2 V/cell, corresponding to electrolyser power consumption of>54 kWh/kg. There are four reasons for employing high voltages:1) electrodes’ insufficient electrochemical activity, 2) the relatively high gas permeability of commonly employed diaphragms means that improved hydrogen purity can be achieved at high current operation points, 3) the stack designs are not optimised for low-current operation due to very simple flow fields, and 4) high currents are required to achieve attractive electrolyser CAPEX costs (EUR/kW). Yet, there is a growing consensus that the wider adoption of green H2 is not hindered by electrolyser CAPEX: the costs of green H2 are in most cases vastly dominated by OPEX, which in turn is a direct function of electrolyser efficiency. Thus, to achieve lowest possible levelised cost of H2, efficiency should be prioritised over current density. EXSOTHyC will optimise electrolyseroperation towards lower voltages and higher efficiencies. The innovation is three-fold and addressing all four above-mentioned reasons: Alternative pathways to the O2 and H2 evolution reactions by new anode and cathode approaches • Novel concepts of membrane electrode assemblies with integrated components • Novel cell design to enhance overall cell efficiency by integrating disruptive concepts In the project, we adopt an approach combining computer simulations, rapid prototyping, and thorough experimental validation on single cell, SRU and shortstack level. In a nutshell, we will combine electrodes made using powder metallurgy with ceramic nanoparticles fabricated by exsolution, leveraging on the synergy that both methods require reducing atmospheres. Also, membrane-electrode assemblies based on Zirfon will be developed. The cell/stack will be backed by computer modelling.

当今的碱性电解质比当前密度相对于效率：为了达到商业相关的当前密度，这些系统通常以超过2 V/电池的电压运行，对应于> 54 kWh/kg的电解器功耗。使用高电压的原因有四个：1）电极的电化学活动不足，2）常用膜片的相对高气体渗透性意味着在高电流高度运行点上可以提高氢纯度，3）​​堆栈设计不得到非常简单的流动量（由于非常简单的流动费用），因此无法实现高电场的高度运营（EURLES）高度计算（EUR）。然而，越来越多的共识是，绿色H2的广泛采用并没有受到电解器资本支出的阻碍：在大多数情况下，绿色H2的成本由OPEX占主导地位，这反过来又是电解器效率的直接功能。为了达到H2的最低水平成本，应优先考虑当前密度。 Exothyc将优化降低电压和较高效率的电动作用。 The innovation is three-fold and addressing all four above-mentioned reasons: Alternative pathways to the O2 and H2 evolution reactions by new anode and cathode approaches • Novel concepts of membrane electrode assemblies with integrated components • Novel cell design to enhance overall cell efficiency by integrating disruptive concepts In the project, we adopt an approach combining computer simulations, rapid prototyping, and thorough experimental validation on single cell, SRU and短片级别。简而言之，我们将使用粉末冶金制成的电极与通过ExSolution制造的陶瓷纳米颗粒制成的电极，并利用这两种方法都需要减少气氛的协同作用。此外，还将开发基于Zirfon的膜电极组件。单元/堆栈将由计算机建模支持。