Stretched to the Limit for Better Batteries
Stretched to the Limit for Better Batteries
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DOI：
10.1016/j.joule.2018.04.020
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发表时间：
2018-05
期刊：
影响因子：
39.8
通讯作者：
M. McDowell
中科院分区：
文献类型：
--
作者：
M. McDowell
锂离子电池电极中使用的常规聚合物粘合剂无法承受高容量合金阳极材料（如硅）所表现出的大体积变化，从而导致容量随着循环而快速衰减。在这一期的Joule中，Xu和同事报告了一种新的交联聚合物粘合剂，该粘合剂在硅微粒电极中能够在数百次循环中保持出色的容量。为了实现这种性能，这种粘合剂牢固地粘附到硅上，同时还表现出相当大的机械弹性和自修复功能。
Conventional polymeric binders used within Li-ion battery electrodes cannot withstand the large volume changes exhibited by high-capacity alloying anode materials such as silicon, resulting in fast capacity decay with cycling. In this issue ofJoule, Xu and coworkers report a new cross-linked polymer binder that enables excellent capacity retention over hundreds of cycles in silicon microparticle-based electrodes. To achieve this performance, this binder strongly adheres to the silicon while also exhibiting substantial mechanical elasticity and self-healing functionality.