• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Charging amp; infrastructure symposium 2018 >Interfacial and Mechanical Issues in All Solid-State Batteries
【24h】

Interfacial and Mechanical Issues in All Solid-State Batteries

机译：所有固态电池的界面和机械问题

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Solid-state lithium-ion batteries are quite promising tor future energy storage applications and have recently attracted much attention. Gaining a better mechanistic understanding of the interfaces between the material components toward enhancing the electrochemical performance is one of the key requirements for further improvement in the function of solid-state batteries. Previously, we investigated the effect of the carbon additives on the interfacial properties with Li[10]GeP[2]S[12] employed as a solid electrolyte. The growing interfacial resistance and rapid capacity fading observed with carbon additives were attributed to the accumulation of oxidized sulfur species, as indicated by the X-ray photoelectron spectra. Another key determinant for the commercial viability of solid-state batteries is to better understand the effect of "cell-breathing" (i.e. continuous volume changes of both the anode and the cathode during lithiation/delithiation). Interestingly the mechanical effects during operation of solid-state batteries and their correlation to the electrochemical performance have rarely been investigated. In this work, we report on the pressure and height changes within typical solid-state batteries, which were measured in situ during galvanostatic cycling conditions. Combining the results from these pressure and dilatometry measurements, as well as X-ray tomography, we elucidated the role of the macroscopic strain generated during cycling, which highlights the importance of external confinement and pressure control for solid state batteries.
机译：固态锂离子电池在未来的储能应用中非常有前途，并且最近引起了很多关注。对材料组分之间的界面进行更好的机械理解以增强电化学性能是进一步改善固态电池功能的关键要求之一。以前，我们使用Li [10] GeP [2] S [12]作为固体电解质研究了碳添加剂对界面性能的影响。 X射线光电子能谱表明，碳添加剂引起的界面电阻的增长和容量的快速衰减归因于氧化硫物质的积累。固态电池的商业可行性的另一个关键决定因素是更好地理解“电池呼吸”的效果（即，在锂化/脱锂期间阳极和阴极的连续体积变化）。有趣的是，很少研究固态电池运行期间的机械效应及其与电化学性能的相关性。在这项工作中，我们报告了典型的固态电池内部的压力和高度变化，这些电流和静电流是在恒电流循环条件下现场测量的。结合这些压力和膨胀测量结果以及X射线断层扫描的结果，我们阐明了循环过程中产生的宏观应变的作用，这凸显了外部限制和压力控制对于固态电池的重要性。

著录项

  • 来源
  • 会议地点 Mainz(DE)
  • 作者

    Saneyuki Ohno; Wenbo Zhang; Wolfgang G. Zeier; Juergen Janek;

  • 作者单位

    Justus-Liebig-University Giessen, Institute of Physical Chemistry, Heinrich-Buff-Ring 17, Giessen, D-35392 Germany;

    Justus-Liebig-University Giessen, Institute of Physical Chemistry, Heinrich-Buff-Ring 17, Giessen, D-35392 Germany;

    Justus-Liebig-University Giessen, Institute of Physical Chemistry, Heinrich-Buff-Ring 17, Giessen, D-35392 Germany;

    Justus-Liebig-University Giessen, Institute of Physical Chemistry, Heinrich-Buff-Ring 17, Giessen, D-35392 Germany;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

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