Designing electrolytes for lithium metal batteries with rational interface stability

• 作者: Chen-Xuan Xu Jian-Jun Jiang
• 来源期刊: 稀有金属（英文版）
• 年，卷（期）: 2021,（2）
• 所属期刊栏目: HIGHLIGHT
• 页码范围: 243-245
• 页数: 3页
• 语种: 英文

摘要

Lithium (Li)-ion batteries (LIBs) have promoted the development of portable electronics and electric vehicles [1, 2].However, with the rapid increase in energy demand, it is increasingly urgent to develop batteries with high energy density [3].Li metal batteries (LMBs) are considered as the "Holy Grail" which have attracted much attention due to the high theoretical capacity (3860 mAh·g-1) and low redox potential (-3.040 V vs.the standard hydrogen electrode) [4, 5].However, before the practical application of LMBs, there are two pressing problems to be solved: one is the growth of Li dendrites and the other is low coulomb efficiency (CE) [6].In the last few decades, enormous research has proven that the solid electrolyte interphase (SEI) layer with high uniformity and stability can effectively suppress the growth of lithium dendrites [7].So, electrolyte engineering is used to facilitate the formation of stable SEI due to the significant impact and low cost.Recently, two papers in Angewandte Chemie International Edition [8] and Nature Communications [9] reported two new electrolyte systems to repress the growth of Li dendrites and improve the long-term performance of LMBs.