Artificial solid-electrolyte interphase (SEI) for improved cycleability and safety of lithium-ion cells for EV applications
Artificial solid-electrolyte interphase (SEI) for improved cycleability and safety of lithium-ion cells for EV applications
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DOI：
10.1016/j.elecom.2009.07.019
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发表时间：
2009-09-01
影响因子：
5.4
通讯作者：
Peled, E.
中科院分区：
文献类型：
--
作者：
Menkin, S.;Golodnitsky, D.;Peled, E.
由于SEI是锂离子电池安全性中最脆弱的因素之一，因此SEI稳定性的改善将导致具有更好性能特性的更安全的电池。在这项工作中，人工SEI形成石墨和锡铜阳极电泳和真空插入技术。研究发现，人工SEI可以稳定Sn-Cu阳极的结构，并使电池的循环寿命延长五倍，不可逆容量不到原始阳极的一半。(C)2009爱思唯尔有限公司版权所有。
Since the SEI is one of the most vulnerable factors in the safety of the lithium-ion battery, improvement in the stability of the SEI will result in a safer battery with better performance characteristics. In this work an artificial SEI was formed on graphite and tin-copper anodes by electropainting and vacuum-insertion techniques. The artificial SEI was found to stabilize the structure of the Sn-Cu anode and led to a cycle life for the cell that was longer by a factor of five and irreversible capacity less than half that of the pristine anode. (C) 2009 Elsevier B.V. All rights reserved.