Energy Storage Science and Technology ›› 2016, Vol. 5 ›› Issue (5): 659-667.doi: 10.12028/2095-4239.2016.0036

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Research progress on interfaces of all solid state lithium batteries

ZHANG Qiang1,2, YAO Xiayin1,2, ZHANG Hongzhou3, ZHANG Lianqi3, XU Xiaoxiong1,2   

  1. 1Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, Zhejiang, China; 2University of Chinese Academy of Science, Beijing 100049, China; 3School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China
  • Received:2016-07-04 Revised:2016-07-19 Online:2016-09-01 Published:2016-09-01

Abstract: Compared with conventional lithium ion batteries, all solid state lithium batteries based on solid electrolytes are new research hotspots, in view of such potential merits as high safety, long cycle life and high energy density. Furthermore, all solid state lithium batteries could be wildly used on electric vehicles and smart grid in the near future. The solid-solid contact resistance of interfaces between electrodes and solid electrolytes is larger than solid-liquid contact resistance. Meanwhile, interface compatibility and stability have significant influence on cycle performance and rate capability. Moreover, grain boundaries in electrolytes determine overall conductivity. Thus, interface issues have great effect on electrochemical performances of all solid state lithium batteries. This paper presents a brief review on all kinds of interfaces in all solid state lithium batteries, covering interface optimizing mechanism and modification methods. The challenges on interface in all solid state lithium batteries are suggested as well.

Key words: all solid state lithium batteries, solid electrolytes, interface modification