过电位
电池(电)
储能
能量密度
纳米技术
生化工程
计算机科学
化学
工程物理
材料科学
工程类
电化学
功率(物理)
物理
物理化学
量子力学
电极
作者
Jimin Park,Jang‐Yeon Hwang,Won‐Jin Kwak
标识
DOI:10.1021/acs.jpclett.0c01596
摘要
To mitigate a global crisis of Li depletion, potassium-based rechargeable batteries have received significant attention because of their low cost and high specific energy density. In particular, the rechargeable potassium oxygen (K–O2) battery has been recognized as a promising energy storage technology because of its low overpotential and high round-trip efficiency based on the single-electron redox chemistry of potassium superoxide. Despite these merits, research on the development of K–O2 batteries is still in its early stages owing to a lack of understanding of the fundamental reaction chemistry and the difficulties encountered in handling, in terms of practical acceptability. Hence, it is necessary to summarize the representative works and provide overall insights on K–O2 batteries and recommendations for future studies. In this Perspective, we critically review the important scientific aspects of K–O2 batteries, discuss the current challenges encountered, and provide recommendations from the scientific and practical points of view. We hope that this Perspecitve will be helpful in designing innovative and advanced K–O2 batteries.
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