首页> 美国卫生研究院文献>ACS Omega >Effect of the Quantity of Liquid Electrolyte on Self-HealingElectrostatic Shield Mechanism of CsPF6 Additive for LiMetal Anodes
【2h】

Effect of the Quantity of Liquid Electrolyte on Self-HealingElectrostatic Shield Mechanism of CsPF6 Additive for LiMetal Anodes

机译:电解液量对自愈的影响锂的CsPF6添加剂的静电屏蔽机理金属阳极

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

We used a cesium hexafluorophosphate (CsPF6)-containing liquid electrolyte for surface-patterned Li metal anodes and confirmed that there is a synergistic improvement in the electrochemical performance such as cycle performance and rate capability. For instance, the surface-patterned Li metal maintains 91.4% of the initial discharge capacity after the 1000th cycle (C/2 = 0.8 mA cm–2 for charging, 1C for discharging). When a large quantity of the CsPF6-containing liquid electrolyte (600 μL) is used, the bare Li metal and surface-patterned Li metal are more effectively stabilized in comparison with the case where 80 μL of electrolyte is used, resulting in improved electrochemical performance. Through systematic testing, we recognize that these results are because of the self-healing electrostatic shield mechanism, which is mainly dependent on the amount of Cs+ ions. A small amount of Cs+ ions cannot effectively counteract the incoming Li+ ions because they cannot form an effective electrostatic shield on the protrusions present on the Li metal surface.
机译:我们将含六氟磷酸铯(CsPF6)的液体电解质用于表面图案化的Li金属阳极,并证实电化学性能(如循环性能和倍率性能)具有协同提高。例如,表面图案化的锂金属在第1000个循环后保持初始放电容量的91.4%(充电时C / 2 = 0.8 mA cm –2 ,放电时1C)。当使用大量含CsPF6的液体电解质(600μL)时,与使用80μL电解质的情况相比,裸露的Li金属和表面图案化的Li金属更有效地稳定,从而改善了电化学性能。通过系统测试,我们认识到这些结果是由于自我修复的静电屏蔽机制所致,该机制主要取决于Cs + 离子的量。少量Cs + 离子不能有效地抵消传入的Li + 离子,因为它们不能在Li金属表面上存在的突起上形成有效的静电屏蔽。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号