Engineering a flexible and mechanically strong composite electrolyte for solid-state lithium batteries

• 作者: Tengrui Wang Ruiqi Zhang Yongmin Wu Guannan Zhu Chenchen Hu Jiayun Wen Wei Luo
• 来源期刊: 能源化学
• 年，卷（期）: 2020,（7）
• 页码范围: 187-190
• 页数: 4页
• 语种: 英文

摘要

Lithium-ion batteries (LIBs) have greatly facilitated our daily lives since 1990s [1,2]. To meet the ever-increasing demand on energy density, Li metal is seen as the ultimate anode because of its ultra-high specific capacity (3860 mAh/g) and the lowest electrochemical potential (- 3.04 V vs. the standard hydrogen elec-trode) [3–6]. However, issues of Li metal anode, such as Li dendrite formation and large volume change during plating/stripping, in-evitably result in low coulombic efficiency and poor cycling perfor-mance [7,8]. To solve these issues, many approaches, such as elec-trolyte optimization [9], fabricating artificial solid electrolyte inter-face (SEI) [10–12] and utilizing porous current collectors [13,14], alloying Li [15] have been proposed. Nevertheless, the flammabil-ity of the liquid organic electrolytes in LIBs would lead to safety challenges, which could not be solved by these approaches [9].