Scholarlink

<p>The integration of solar energy into redox-flow batteries (RFBs) has recently attracted considerable attention as a promising strategy for sustainable energy storage. However, most early efforts have simply combined conventional photovoltaic cells with flow batteries, without achieving true functional coupling or synergistic operation between the two systems. This limitation is especially pronounced in high-voltage RFBs, where the photovoltaic component must deliver equally high photovoltages, often leading to complicated configurations and elevated fabrication costs. In this study, we present a simple and cost-effective approach by developing an all-iron photo-assisted redox-flow battery (PARFB) that integrates an iron oxide photoanode with K<sub>4</sub>[Fe(CN)<sub>6</sub>]/K<sub>3</sub>[Fe(CN)<sub>6</sub>] and FeTiPA(II)/FeTiPA(III) as the redox couples. By optimizing the interfacial charge-transfer kinetics at the electrode level, the system achieves a 15% reduction in charging energy, an output voltage of ~1.20 V, and a solar-to-output energy conversion efficiency of 0.1%, which is comparable to previously reported hematite-based photoelectrode systems. This work offers a viable and scalable strategy for coupling solar energy harvesting with redox-flow battery technologies, particularly for systems requiring high operational voltages.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

An all-iron photo-assisted redox-flow battery

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年7月22日

查看全文
  • Junzhe Pei,
  • Yuxi Song,
  • Miao Li,
  • Shaojun Nan,
  • Qinghua Xu,
  • Qing Wang

摘要

The integration of solar energy into redox-flow batteries (RFBs) has recently attracted considerable attention as a promising strategy for sustainable energy storage. However, most early efforts have simply combined conventional photovoltaic cells with flow batteries, without achieving true functional coupling or synergistic operation between the two systems. This limitation is especially pronounced in high-voltage RFBs, where the photovoltaic component must deliver equally high photovoltages, often leading to complicated configurations and elevated fabrication costs. In this study, we present a simple and cost-effective approach by developing an all-iron photo-assisted redox-flow battery (PARFB) that integrates an iron oxide photoanode with K4[Fe(CN)6]/K3[Fe(CN)6] and FeTiPA(II)/FeTiPA(III) as the redox couples. By optimizing the interfacial charge-transfer kinetics at the electrode level, the system achieves a 15% reduction in charging energy, an output voltage of ~1.20 V, and a solar-to-output energy conversion efficiency of 0.1%, which is comparable to previously reported hematite-based photoelectrode systems. This work offers a viable and scalable strategy for coupling solar energy harvesting with redox-flow battery technologies, particularly for systems requiring high operational voltages.