Implementing the use of solid electroactive materials in redox-flow battery (RFB) configuration is an appealing challenge since the resulting battery technologies benefit from the high energy density of solid materials and the independent scalability of energy and power of RFB configuration. In recent years, two different strategies have emerged to achieve this goal: i) the semi-solid flow batteries and ii) the redox-mediated flow batteries, also referred to as redox targeting or solid booster, each battery type having intrinsic advantages and disadvantages. In this perspective review, recent progress addressing critical factors for each technology is revised. In particular, chemical engineering aspects are of vital importance for further improvement and practical deployment of these two technologies.

在氧化还原液流电池 (RFB) 配置中实施固体电活性材料的使用是一项极具吸引力的挑战，因为由此产生的电池技术受益于固体材料的高能量密度以及 RFB 配置的能量和功率的独立可扩展性。近年来，出现了两种不同的策略来实现这一目标：i）半固态液流电池和 ii）氧化还原介导的液流电池，也称为氧化还原靶向或固体助推器，每种电池类型都有固有的优点和缺点。在此透视回顾中，修订了针对每种技术的关键因素的最新进展。特别是，化学工程方面对于这两种技术的进一步改进和实际部署至关重要。