Review of High Performance Aqueous Rechargeable Batteries Based on Layered Double Hydroxide

차세대 수계 이차전지용 층상 이중 수산화물 소재의 연구동향에 관한 리뷰

Aqueous rechargeable batteries (ARBs) have drawn great attention as an alternative to the conventional non-aqueous lithium ion batteries (LIBs) because of the ever-growing demand for battery systems that are cheaper and safer than LIBs. However, it is challenging to find electrode materials for ARBs with promising and competitive properties in many aspects mainly due to the limited electrochemical window of water (≈1.23 V) and the poor understanding of the operation mechanism. In this review, firstly introduced is the reason why the conventional LIB materials failed to exhibit satisfying performance in aqueous electrolytes, followed by a comprehensive understanding of layered double hydroxides as ARB cathode materials.