电解质
材料科学
锂(药物)
电流密度
图层(电子)
化学工程
纳米技术
电极
化学
物理化学
量子力学
医学
物理
工程类
内分泌学
作者
Shijie Xu,Xiaobin Cheng,Shunjin Yang,Yi‐Chen Yin,Xinyu Wang,Yuzhe Zhang,Dehang Ren,Yujiang Sun,Xiao Sun,Hong‐Bin Yao,Yongan Yang
标识
DOI:10.1002/adma.202310356
摘要
Abstract Li 6 PS 5 Cl (LPSC) is a very attractive sulfide solid electrolyte for developing high‐performance all‐solid‐state lithium batteries. However, it cannot suppress the growth of lithium dendrites and then can only tolerate a small critical current density (CCD) before getting short‐circuited to death. Learning from that a newly‐developed LaCl 3 ‐based electrolyte (LTLC) can afford a very large CCD, a three‐layer sandwich‐structured electrolyte is designed by inserting LTLC inside LPSC. Remarkably, compared with bland LPSC, this hybrid electrolyte LPSC/LTLC/LPSC presents extraordinary performance improvements: the CCD gets increased from 0.51 to 1.52 mA cm −2 , the lifetime gets prolonged from 7 h to >500 h at the cycling current of 0.5 mA cm −2 in symmetric cells, and the cyclability gets extended from 10 cycles to >200 cycles at the cycling rate of 0.5 C and 30 °C in Li|electrolyte|NCM721 full cells. The enhancing reasons are assigned to the capability of LTLC to scavenge lithium dendrites, forming a passive layer of Ta, La, and LiCl.
科研通智能强力驱动
Strongly Powered by AbleSci AI