期刊
MATERIALS LETTERS
卷 233, 期 -, 页码 224-227出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2018.09.011
关键词
Electrospinning; Energy storage and conversion; Polyimide; Hot-pressed; Functional; Excellent cycle stability
资金
- National Natural Science Foundation of China [51678411]
- Science and Technology Plans of Tianjin [15JCYBJC47200, 16PTSYJC00110, 16JCTPJC45600]
In this study, a novel electrospun polyimide (PI) nanofiber membrane used as the separator for lithium-sulfur battery was prepared successfully by different preparation processes. Compared with the polyolefin membranes, the PI nanofiber separator prepared via a hot pressing process in polyamic acid (PAA) membrane has outstanding thermal stability, high strength, and good ability to absorb and store liquid electrolyte. Importantly, benefiting from interconnected pore structure and abundant polar functional groups of polyimide macromolecule, the diffusion and loss of intermediate polysulfides in electrolyte can be suppressed from physical and strong chemical adsorption and interaction. In cycle testing, the capacity fade rate is only 0.08% per cycle and the discharge capacity remains 680 mAh g(-1) after 200 cycles at 0.5 C, which indicates the special hot-pressed electrospun PI separators have a good cycle stability and a broad application prospect in lithium-sulfur batteries. (C) 2018 Elsevier B.V. All rights reserved.
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