期刊
JOURNAL OF APPLIED POLYMER SCIENCE
卷 135, 期 29, 页码 -出版社
WILEY
DOI: 10.1002/app.46508
关键词
applications; batteries and fuel cells; fibers; membranes; morphology
资金
- Application and Basic Research Foundation of Sichuan Province [2010JY0015]
- National Natural Science Foundation of P.R. China [50473050, 21503036]
Separator is a very important set of lithium-ion batteries. At present, low porosity and poor thermal stability are two major disadvantages of separator. In this work, we first apply electrospinning method to prepare the Polytetrafluoroethylene (PTFE) nanofiber separator, which has the advantages of electrospinning method and PTFE materials. The effect of the PTFE nanofiber separator is investigated by scanning electron microscope, Capillary Flow Porometer, thermogravimetric-differential scanning calorimeter, linear sweep voltammeter, AC impedance, and charge/discharge cycling tests. The results demonstrate that the PTFE nanofiber separator has a special fiber structure made from PTFE particles gathering one by one along the fibers. Moreover, the PTFE nanofiber separator exhibits several advantages, including suitable pore diameter, uniform pore size distribution, high porosity, and electrolyte uptake, which enhance the ionic conductivity. The thermal stability of the PTFE nanofiber separator is much better than that of the conventional polyolefin separator. The Li/LiCoO2 cell equipped with PTFE nanofiber separator exhibits excellent rate performance and first charge-discharge specific capacity of 142 and 131 mAhg(-1), respectively, accompanied by relatively stable cycle performance at 0.2 C rate. It is supposed to be a candidate for application in lithium-ion batteries. (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46508.
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