Non-aqueous flow cells offer expanded electrochemical potential windows, which is desirable for energy storage. The performance of such electrochemical systems is however constrained by high cell resistance due to the low ionic conductivity of electrolytes and membranes in non-aqueous media. In this work, we apply membrane-less cell configurations with flow-through porous electrodes to address the ohmic losses and boost the performance of non-aqueous flow cells. Vanadium acetylacetonate redox chemistry is used as a model system and various performance aspects such as reaction kinetics, electrode wettability, cell resistance and crossover are investigated. The kinetics, measured in flow-through mode, is found competitive due to the enhanced mass transport and surface area utilization in the flow-through porous electrode. The electrode porosity is measured to be 79% and only 6.0% in acetonitrile and water, respectively, indicating superior wettability behaviour for non-aqueous electrolytes. A fully integrated co-laminar flow cell demonstrates negligible crossover and a combined ohmic cell resistance that meets techno-economic targets. Its discharge power density of 550 mW cm⁻² is two orders of magnitude higher than for other non-aqueous flow cells, demonstrating that membrane-less cell designs with flow-through porous electrodes are favourable in order to overcome performance limitations in non-aqueous electrochemical systems.

非水流通池提供了扩大的电化学势能窗口，这对于能量存储来说是理想的。然而，由于非水介质中电解质和膜的低离子电导率，这种电化学系统的性能受到高电池电阻的限制。在这项工作中，我们将无膜流通池配置与流通的多孔电极一起使用，以解决欧姆损失并提高非水流通池的性能。乙酰丙酮钒氧化还原化学用作模型系统，并研究了反应动力学，电极润湿性，电池电阻和交叉等各种性能方面。由于在流通式多孔电极中提高的质量传输和表面积利用率，发现以流通方式测量的动力学具有竞争力。在乙腈和水中测得的电极孔隙率分别为79％和仅6.0％，这表明非水电解质具有优异的润湿性。完全集成的层流式流通池显示出可以忽略的交叉以及满足技术经济目标的综合欧姆池电阻。放电功率密度为550 mW cm^-2比其他非水流通池高两个数量级，表明具有流通性多孔电极的无膜电池设计有利于克服非水电化学系统的性能限制。