Marie Sedlarikova

Elimination of irreversible effects during first charging of lithium battery anodes

The irreversible capacity of negative electrode in a lithium-ion cell is a widely described the phenomenon. Irreversible capacity losses are connected with formation of a solid electrolyte interface layer. This layer is growing on the electrode-electrolyte interface during first several charging cycles. The layer is indispensable for proper functioning of a lithium-ion cell. However, during this layer formation, the atoms of lithium are consumed in a range from 18 to 45% of the total amount of lithium atoms presented in cell. Demonstration of possibilities to suppress this phenomenon that occurs on a negative electrode interface is the main aim of this paper.

Review on Electrodes with Extended Surface Area for Supercapacitors

This contribution offers an outline of simplified theories describing processes occurring in porous and nanostructured electrodes, their properties from the view if impedance spectroscopy and their application in electrochemical supercapacitors. Many electrode materials possess multi-level structures starting with macroporosity and ending with nanostructures. Differences as well as similarities between capacitor electrodes and intercalation electrodes will be emphasized. Examples of will be given. Introduction