Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8032951 | Thin Solid Films | 2018 | 6 Pages |
Abstract
This work evaluates the behavior of three 4â¯V commercial all-solid-state lithium microbatteries, 80, 170 and 200â¯Î¼m thick with the same announced capacity of 700â¯Î¼Aâ¯h. The electrochemical tests are based on galvanostatic experiments between 4.2â¯V and 3.6â¯V enabling to determine the real specific capacity achieved as a function of the C rate at room temperature and 60â¯Â°C. The results make differences visible between the three commercial thin film microbatteries. The thinnest battery exhibits the best properties with a high energy density of 42â¯mWhâ¯cmâ3, i.e. two fold the value offered by the other cellsâ¯ââ¯200â¯Î¼m thick, and an excellent cycle life at C rate over 1000â¯cycles with 100% of capacity retention and 100% of depth of discharge. This shows the maturity of the thin film battery technology now commercially available. The present contribution provides a punctual picture of the outstanding characteristics already offered by all solid-state Li microbatteries.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Barbara Laïk, Isabelle Ressejac, Cécile Venet, Jean-Pierre Pereira-Ramos,