Rechargeable Potassium–Selenium Batteries,Advanced Functional Materials

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Rechargeable Potassium–Selenium Batteries
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2021-05-06 , DOI: 10.1002/adfm.202102326
Xiang Long Huang ₁ , Zaiping Guo _{2,

3} , Shi Xue Dou ₂ , Zhiming M. Wang _{1,

4}

Affiliation

Rechargeable potassium–selenium (K–Se) batteries, as an emerging electrochemical energy storage system, has recently captured intensive attention due to the desirable natural abundance and low redox potential of elemental potassium as well as the relatively high electronic conductivity and impressive theoretical volumetric capacity of elemental selenium. Although great progress on cathode materials design and electrochemical performance improvement has been made, K–Se batteries are still confronted with a series of key challenges, including low reactive activity, shuttle effect, volume expansion, potassium dendrite growth, and high chemical activity of potassium metal. The recent advances in rechargeable K–Se batteries are comprehensively summarized with an emphasis on discussing the electrochemical mechanisms and central challenges, presenting the synthesis, properties, and electrochemical performance of selenium-based cathode materials, and extending potential tactics for tackling the key issues and developmental directions for future research.

中文翻译：

可充电钾-硒电池

可充电钾硒（K-Se）电池作为一种新兴的电化学储能系统，由于元素钾的理想天然丰度和低氧化还原电位以及相对较高的电子电导率和令人印象深刻的理论体积容量，最近引起了广泛关注。元素硒。尽管在正极材料设计和电化学性能改进方面取得了很大进展，但钾硒电池仍面临一系列关键挑战，包括低反应活性、穿梭效应、体积膨胀、钾枝晶生长和钾的高化学活性。金属。全面总结了可充电 K-Se 电池的最新进展，重点讨论了电化学机制和核心挑战，

更新日期：2021-05-06

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