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.

当今的碱性电解槽更看重电流密度而非效率：为了实现商业相关的电流密度，这些系统通常在超过 2 V/电池的电压下运行，相当于电解槽功耗>54 kWh/kg。采用高电压有四个原因：1。 ) 电极电化学活性不足，2) 常用隔膜相对较高的透气性意味着在高电流操作点可以提高氢气纯度，3)由于流场非常简单，电堆设计并未针对低电流运行进行优化，并且 4) 需要高电流才能实现有吸引力的电解槽资本支出成本（欧元/千瓦）。然而，越来越多的人认为绿色氢气的广泛采用。不受电解槽资本支出的阻碍：在大多数情况下，绿色氢气的成本很大程度上由运营支出决定，而运营支出又是电解槽效率的直接函数。因此，为了实现尽可能最低的氢气成本，效率应该。 EXSOTHyC 将优化电解槽操作，以实现更低的电压和更高的效率。该创新具有三个方面，并解决了上述所有四个原因： 通过新的阳极和阴极方法实现 O2 和 H2 析出反应的替代途径。具有集成组件的膜电极组件 • 新颖的电池设计，通过集成颠覆性概念来提高整体电池效率 在该项目中，我们采用了一种将计算机模拟、快速原型设计以及对单电池、SRU 和短叠层水平的彻底实验验证 简而言之，我们将利用粉末冶金制造的电极与通过外溶制造的陶瓷纳米粒子结合起来，利用两种方法都需要还原性气氛的协同作用。将开发基于 Zirfon 的组件。电池/电堆将得到计算机建模的支持。