氧化还原
流动电池
流量(数学)
电池(电)
化学
氧化还原
电化学
材料科学
无机化学
热力学
机械
物理
功率(物理)
生物化学
作者
Yucun Zhou,Guangtao Cong,Hongning Chen,Nien-Chu Lai,Yi‐Chun Lu
出处
期刊:ACS energy letters
[American Chemical Society]
日期:2020-04-28
卷期号:5 (6): 1732-1740
被引量:21
标识
DOI:10.1021/acsenergylett.0c00611
摘要
We propose and demonstrate the concept of a self-mediating redox flow battery that employs inherently present redox shuttles to access charges stored in solid electrode materials without circulating solids. Soluble and inherently present polychalcogenides shuffle electrons between the stack and the tank without circulating sulfur/selenium particles. This strategy promises a high energy density provided by solid materials without circulating solids or using foreign redox mediators, which directly addresses the most critical challenges facing “semisolid” and “redox-targeting” approaches. The full electrochemical reactions are completed via combinations of electrochemical, comproportionation, and disproportionation reactions of inherently present polychalcogenides without circulating solids. A high degree of material utilization (≤99%) and high volumetric capacities (1096–1268 Ah L–1catholyte) are achieved. This concept can be widely applied to solid redox active materials that naturally exhibit soluble reaction intermediates such as sulfur, selenium, iodine, etc., demonstrating the promising potential of using self-mediation for efficient, high-energy, and low-cost energy storage applications.
科研通智能强力驱动
Strongly Powered by AbleSci AI