期刊
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
卷 161, 期 11, 页码 F3117-F3122出版社
ELECTROCHEMICAL SOC INC
DOI: 10.1149/2.0191411jes
关键词
-
资金
- Department of Defense (DoD) through the National Defense Science and Engineering Graduate Fellowship (NDSEG) Program
- Princeton University Siebel Energy Grand Challenge
- Princeton University Carbon Mitigation Initiative
- Rutgers-Princeton NSF IGERT in Nanotechnology for Clean Energy
- Addy Fund through the Andlinger Center for Energy and the Environment
Knowledge of the compressive mechanical properties of battery separator membranes is important for understanding their long term performance in battery cells where they are placed under compression. This paper presents a straightforward procedure for measuring the compressive mechanical properties of battery separator membranes using a universal compression testing machine. The compressive mechanical properties of a microporous polypropylene separator are characterized over a range of strain rates and in different fluid environments. These measurements are then compared to measurements of the rate and fluid-dependent mechanical properties of the separator under tension. High strain rate dependence due to viscoelasticity is observed in both tension and compression. An additional rate dependence due to poroelastic effects is observed in compression at high strain rates. A reduction in mechanical properties is observed in DMC solvent environments for both tension and compression, but is found to be less pronounced in compression. The difference in mechanical properties between compression and tension highlight the anisotropic nature of battery separators and the importance of measuring compressive properties in addition to tensile properties. (C) The Author(s) 2014. Published by ECS. This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 License (CC BY, http://creativecommons.org/licenses/by/4.01), which permits unrestricted reuse of the work in any medium, provided the original work is properly cited. 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