Electrolytes and Interphases in Potassium Ion Batteries.

Area of Science:

• Energy Storage Materials Science
• Electrochemistry
• Materials Engineering

Background:

• Potassium ion batteries (PIBs) are a promising energy storage technology due to their cost-effectiveness and high performance.
• While electrode materials have been extensively studied, electrolytes are critical for overall cell performance.
• Electrolyte and electrode interface engineering are key areas for advancing PIB technology.

Purpose of the Study:

• To summarize the current research progress in electrolytes for potassium ion batteries.
• To discuss various types of electrolytes, including organic liquid, ionic liquid, solid-state, and aqueous electrolytes.
• To provide guidance on designing electrolyte systems for high-performance PIBs.

Main Methods:

• Comprehensive literature review of recent advancements in PIB electrolytes.
• Analysis of different electrolyte types and their impact on battery performance.
• Discussion on electrode/electrolyte interface engineering strategies.

Main Results:

• Overview of organic liquid, ionic liquid, solid-state, and aqueous electrolytes for PIBs.
• Detailed examination of the role of electrolytes in determining cell performance.
• Exploration of electrode/electrolyte interface engineering techniques.

Conclusions:

• Electrolytes are crucial for high-performance potassium ion batteries, alongside electrode materials.
• Further research into diverse electrolyte systems and interface engineering is essential for PIB development.
• This report serves as a guide for designing advanced electrolyte systems for PIBs.