Progress and directions in low-cost redox-flow batteries for large-scale energy storage

• 来源期刊: 国家科学评论（英文版）
• 关键词: redox-flow batteries energy storage large scale cost electrolytes
• 年，卷（期）: 2017,（1）
• 页码范围: 91-105
• 页数: 15页
• 语种: 英文
• DOI: 10.1093/nsr/nww098

摘要

Compared to lithium-ion batteries,redox-flow batteries have attracted widespread attention for long-duration,large-scale energy-storage applications.This review focuses on current and future directions to address one of the most significant challenges in energy storage:reducing the cost of redox-flowbattery systems.A high priority is developing aqueous systems with low-cost materials and high-solubility redox chemistries.Highly water-soluble inorganic redox couples are important for developing technologies that can provide high energy densities and low-cost storage.There is also great potential to rationally design organic redox molecules and fine-tune their properties for both aqueous and non-aqueous systems.While many new concepts begin to blur the boundary between traditional batteries and redox-flow batteries,breakthroughs in identifying/developing membranes and separators and in controlling side reactions on electrode surfaces also are needed.