Hybrid electrolyte for advanced rechargeable batteries

• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2020,（2）
• 页码范围: 92-93
• 页数: 2页
• 语种: 英文

摘要

A conventional design of each rechargeable lithium-ion battery contains a cathode and an anode with an electrolyte that transfers Li-ions inside the battery.The electrochemically stable potential window of the electrolyte determines the maximum voltage of the battery,thus limiting a variety of choices for electrode materials [1].A hybrid electrolyte strategy has been smartly proposed to break the routine of a single electrolyte,where the catholyte and anolyte are isolated with a Li-ion exchange membrane.This strategy effectively ensures both electrodes reactions conduct in their corresponding electrolyte within the electrolyte stability window (Fig.1a).Li et al.[2] initiated the concept of hybrid electrolyte rechargeable battery that aqueous catholyte and organic anolyte were separated by a superionic conductor glass ceramic film (LISICON).Following this,the hybrid electrolyte system was further extended to a series of prototype batteries,such as Li-air,Li-S,Li-Cu metal,Li-AgO and Li-redox flow batteries,et al.[3-7].Moreover,hybrid electrolytes have also been configured with a rigid inorganic solid-state electrolyte (SSE) and a rationally engineered interfacial with solid polymer electrolytes (SPEs) or liquid electrolytes,to effectively overcome the high interfacial resistance between SSEs and electrodes [8].In spite of many advantages brought by hybrid electrolytes,the stiff and expensive properties of commonly used LISICON separator impede its practical application.