Beyond-carbon materials for potassium ion energy-storage devices

• Published in: Renewable & sustainable energy reviews 2021-08, Vol.146, p.111161, Article 111161
• Main Authors: Zhong, Fulan, Wang, Yijun, Li, Guilan, Huang, Chuyun, Xu, Anding, Lin, Changrong, Xu, Zhiguang, Yan, Yurong, Wu, Songping
• Format: Article
• Language: English
• Subjects: Battery; Beyond-carbon materials; Binder; Electrolyte; New-concept device; Potassium-ion energy-storage device
• ISSN: 1364-0321; 1879-0690
• DOI: 10.1016/j.rser.2021.111161

Potassium-ion energy-storage devices have established themselves as the most important candidates for next-generation energy-storage devices in the coming future. Recently, inorganic electrode materials have riveted ever-increasing interest due to large theoretical capacity, rich sources, low price and environmental friendly advantages. However, the electrode materials of potassium-containing devices have been suffering low theoretical capacity, poor rate performance and short lifespan due to integration effects of seriously electrochemical pulverization and slow kinetics. In this timely review, we will focus on the latest progress of potassium ion energy storage devices based on beyond-carbon materials, referring to the synthesis of materials and the construction of microstructure, material component-oriented electrochemical performance, energy storage mechanism discussion, newfangled device assembly and key components. The key materials and novel theories are reviewed, and some personal viewpoints have been proposed, targeting providing some inductive opinions. Potassium-ion energy-storage devices have established themselves as one of the most important candidates for next-generation energy-storage devices in the coming future. In this timely review, we will focus on the latest progress of key materials and novel theories in potassium-containing devices. And some personal viewpoints have been proposed, targeting providing some inductive opinions. [Display omitted] •The beyond-carbon anode materials for potassium ion batteries were systematically analyzed and summarized.•Other components of potassium ion batteries, such as cathode, electrolyte and binder, were also studied.•The development bottleneck of potassium ion battery was analyzed and some countermeasures were put forward.•It provides comprehensive and reliable information and enlightening opinions for the researchers of new energy devices.