期刊
NANO ENERGY
卷 62, 期 -, 页码 275-281出版社
ELSEVIER
DOI: 10.1016/j.nanoen.2019.05.042
关键词
Zinc ion battery; Electrolyte additive; Zinc metal; Dendrite suppression
类别
资金
- National Science Foundation [CMMI-1148919]
- China Scholarship Council scholarship
- Hightower Chair Foundation
- NSFC [51572040]
- Fundamental Research Funds for the Central Universities [2018CDQYWL0046, 2019CDXZWL001]
- National Key Research and Development Program of China [2016YFA0202603]
- Program of Introducing Talents of Discipline [B17034]
- National Natural Science Foundation of China [51521001, 51602239]
Aqueous rechargeable zinc ion batteries (ARZIBs) is considered one of the most compelling candidates for grid-scale energy storage owing to their cost effectiveness, good safety, eco-friendliness, high output voltage, and high capacity. However, their practical applications are still largely limited by the undesirable cyclability and high-rate capability. Here, we report a discovery that using a small amount (2 vol%) of diethyl ether (Et2O) as the electrolyte additive could largely improve the performance of Zn-MnO2 batteries. The addition of Et2O yielded the first cycle coulombic efficiency of 95.6% at 50 mA/g, a high capacity of 115.9 mAh/g at 5 A/g and 97.7% retention of initial capacity after 4000 cycles, demonstrating an outstanding rate capability and cycling performance among the reported Mn-based zinc ions batteries in mild electrolyte. Ex-situ characterizations revealed that appropriate amount of Et2O molecules could effectively suppress the formation of Zn dendrites on Zn anode, which is the main mechanism for cyclability improvements.
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