Analysis of effects of the state of charge on the formation and growth of the deposit layer on graphite electrode of pouch type lithium ion polymer batteries
By Victor A. Agubraa,Jeffrey W. Fergusa, Rujian Fub, Song-Yul Choeb
Published in Surface and Coatings Technology
NULL
2014
Abstract
The breakdown of the protective solid electrolyte interface (SEI) layer formed on lithium ion battery anodes can initiate further electrolyte decomposition and the formation of non-uniform and electronically insulating reaction products on the surface of the graphite particles. The results from this study indicate that raising both the lower and upper ends of the state of charge (SOC) increased the rate of the electrolyte decomposition side reaction to form a thick deposit surface film. This deposit layer contained lithium that can no longer participate in the reversible electrochemical reaction. In addition, the high cycling potential coupled with high charge rate created a large lithium concentration gradient that led to some particles detachment from the current collector and isolation in the electrochemical process.
Microsoft is Ending Support for Windows 7
Microsoft will discontinue support for Windows 7 on January 14, 2020 which means Gamry will also be discontinuing support for Windows 7. If you are upgrading to Windows 10, like many companies and institutions, you need to be running Version 7 of our s oftware . Please note that only USB and Ethernet-based instruments can run in Version 7. Eligible users can download the latest version of our software through our online Client Portal .
If you haven't already registered your instrument, you can do so through the Client Portal .
Please email Technical Support if you have any questions regarding this transition. Please be sure to include your instrument model and serial number when contacting us.