Strategies toward high-performance dual-ion batteries
Abstract
The burgeoning market for electric vehicles and stationary energy storage systems has contributed to huge research efforts to deliver an immaculate rechargeable battery. Lithium-ion batteries (LIBs) with high energy density and long cycle life have led the rechargeable battery market for the past few decades, but limited theoretical energy density and expensive/limited resources require the development of next-generation rechargeable batteries. Anion intercalation-type batteries such as dual-ion batteries (DIBs) have got limelight as potential energy storage systems utilizing the inexpensive transition metal-free host materials such as graphite and anion redox chemistry while providing compatible energy/power density, cycle life, and safety of rechargeable batteries. DIBs with the high-voltage redox reaction of anions (>4.5 V vs. Li/Li+) have achieved energy density close to commercialized LIBs (~250 Wh kg-1) despite a short research history. However, despite the advantages, DIBs undergo electrolyte oxidative decomposition due to high operating voltage and structural collapse of the host material (mainly the graphite) due to large-sized anion intercalation. Material developments to overcome these problems are required for high-performance DIBs. Here, I report several material strategies including lithium-aluminum foil anode for DIBs. It is intended to explain various experiments conducted in terms of an anode, a cathode, and an electrolyte of DIB and provide a perspective on high-performance DIBs.
Building: TASME Center
Room: Science Hall
Date: August 27, 2022 - 04:35 PM – 04:50 PM