期刊
ACS APPLIED MATERIALS & INTERFACES
卷 9, 期 8, 页码 7068-7074出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b14614
关键词
iodic acid; lithium anode; solid-electrolyte interphase; lithium battery; Li-S battery
资金
- National Science Foundation of China [11234013, 21473022, 21673033, 51603028]
- Science and Technology Bureau of Sichuan Province of China [2015HH0033]
- Startup Grant of UESTC [ZYGX2015KYQD058]
Iodic acid (HIO3) was exploited as the effective source to build an artificial solid-electrolyte interphase (SEI) on the surface of Li anode. On one hand, HIO3 is a weak solid-state acid and can be easily handled to remove most ion insulating residues like Li2CO3 and/or LiOH from the pristine Li surface; on the other hand, both the products of Lil and LiIO3 resulted from the chemical reactions between Li metal and HIO3 are reported to be the ion-conductive components. As a result, the lower voltage polarization and impedance, longer cycling lifetime and higher Coulombic efficiency have been successfully achieved in the HIO3-treated Li-Li and Li-Cu cells. By further using the HIO3-treated Li anode into practical Li-S batteries, the impressive results also have been obtained, with average discharge capacities of 719 mAh g(-1) for 200 cycles (0.2 C) and 506 mAh g(-1) for 500 cycles (0.5 C), which were better than the Li-S batteries using the pristine Li anode (552 and 401 mAh g-1, respectively) under the same conditions.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据