Perspective—Insights into Solar-Rechargeable Redox Flow Cell Design: A Practical Perspective for Lab-Scale Experiments

Solar-rechargeable redox flow batteries (SRFBs) offer feasible solar energy storage with high flexibility in redox couples and storage capacity. Unlike traditional redox flow batteries, homemade flow cell reactors are commonly used in most solar-rechargeable redox flow batteries integrated with photoelectrochemical devices as it provides high system flexibility. This perspective article discusses current trends of the architectural and material characteristics of state-of-the-art photoelectrochemical flow cells for SRFB applications. Key design aspects and guidelines to build a photoelectrochemical flow cell, considering practical operating conditions, are proposed in this perspective.

Determining Performance Limits for Non-Aqueous Redox Flow Batteries

<p>In this work, we explore the limits of performance and energy density of a non-aqueous redox flow battery under ideal conditions. We compared the performance of an organic redox couple in a symmetric cell to that of a vanadium redox flow cell. Based on cycling performance, we expect that ­– when losses from separators and poor ionic conductivity are minimized – a non-aqueous flow cell operating at 3.5 V should have a 35% higher energy density than V^4/5+ couple in aqueous system at 100 mA∙cm^-2 current density for a system that could operate at 3.5 V.</p>

Determining Performance Limits for Non-Aqueous Redox Flow Batteries

<p>In this work, we explore the limits of performance and energy density of a non-aqueous redox flow battery under ideal conditions. We compared the performance of an organic redox couple in a symmetric cell to that of a vanadium redox flow cell. Based on cycling performance, we expect that ­– when losses from separators and poor ionic conductivity are minimized – a non-aqueous flow cell operating at 3.5 V should have a 35% higher energy density than V^4/5+ couple in aqueous system at 100 mA∙cm^-2 current density for a system that could operate at 3.5 V.</p>

Screening of metal complexes and organic solvents using the COSMOSAC-LANL model to enhance the energy density in a non-aqueous redox flow cell: an insight into the solubility

In this paper, we have proposed a first-principles methodology to screen transition metal complexes against a particular organic solvent and organic solvents against a particular transition metal complex based on their solubility information without the knowledge of heat of fusion and melting temperature.