The safety of lithium-ion batteries can be decisively improved through the choice of suitable electrolyte formulations. The Li-Redox project, which was funded by the German Federal Ministry of Education and Research (BMBF), was successfully concluded in 2012.

Together with two renowned industrial partners, ZSW’s work in the project was focussed on developing redox shuttle electrolyte additives (RSAs). RSAs enable reversible protection against overcharging by deploying an internal redox circuit to consume the overcharge current (fig. below left), whereby the cell can still be used once the overcharging protection mechanism has been activated. A combined theoretical and experimental approach was adopted for the project. A large number of potential RSA candidates were first of all screened in advance using ab-initio calculations. The most promising candidates were then experimentally characterised in detail and tested in terms of their effectiveness.

Contact

Dr. Margret Wohlfahrt-Mehrens
+49 731 9530-612
Galvanostatic overcharging test for a LiMn2O4 half-cell with a new redox shuttle additive that works at 4.3 V vs. Li/Li+
Galvanostatic overcharging test for a LiMn2O4 half-cell with a new redox shuttle additive that works at 4.3 V vs. Li/Li+. Source: ZSW/ECM

This Website uses cookies and third-party content

On this website, we use cookies which are absolutely necessary for displaying its content. If you click on “Accept cookies chosen”, only these necessary cookies are used. Other cookies and content by third parties (such as YouTube videos or maps by Google Maps) are only set with your consent by choosing “Accept all cookies”. For further information, please refer to our data protection policy where you can withdraw your consent at any time.