// RAMSES: Reversible alkaline zinc-manganese dioxide battery for stationary energy storage

The RAMSES* project, funded by the German Federal Ministry of Education and Research, aims to develop an electrically rechargeable zinc-manganese dioxide (Zn-MnO2) cell.

To increase the cycle number, α-MnO2 produced at ZSW was doped with copper (Cu) leading to a significant improvement in the chargedischarge efficiency at high discharge rates and discharge depths. The figure below right depicts the high degree of preservation in the electrode capacity of a cell with a copper-doped electrode at a discharge depth of 35%, whereas copper-free electrodes have already lost their capacity after just a few cycles. Even at a 100% discharge depth, the cell could be operated for several cycles. In another trial, different procedures for loading the nickel foam current collector with active material were investigated. The goal of the project was achieved after only one year using a cost-effective method developed in-house. Further investigations oriented around basic research aim for a better understanding of the electrochemical charge storage in doped MnO2 materials, which in the long term will allow a targeted material and electrode design to increase the cycle stability of MnO2 electrodes.

The joint research project between German and French scientists aim to support the European energy supply system in becoming more efficient and sustainable.

*RAMSES = Reversible Alkaline zinc – Manganese dioxide battery for Stationary Electricity Storage

Contact

Dr. Ludwig Jörissen
+49 731 95 30-605
Employee profile
Evolution of the specific capacity of Cu doped and undoped α-MnO2 electrodes with cycle number.
Evolution of the specific capacity of Cu doped and undoped α-MnO2 electrodes with cycle number.

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.

Legal Information

Privacy Policy

learn more

Without necessary cookies, this website will not work properly. These cookies help to ensure basic functions such as navigating the pages and accessing protected parts of the website.


The cookie box saves information about which cookies you have activated.

learn more

We use tracking technologies for marketing purposes. To this end, we also use third party agents who use may use – across devices – cookies, fingerprints, tracking pixel and IP addresses. On our site, we also embed third-party content by other suppliers (e.g. social plug-ins, geographical map services). We cannot influence data processing and tracking by such third parties. Should you activate third-party content, on loading the respective page, such content is loaded from the web servers of third paty suppliers and data which are necessary for technical purposes for loading this content. Should this third-party content contain cookies, these will also be set. We try to implement such content in a way that uses data efficiently. In this context, we use service providers in third countries outside the EU without appropriate data protection policies. This carries the following risks: Access by authorities without information, no rights for the persons concerned, no remedies, loss of control.


We have embedded services by YouTube


We use map services provided by Google (Google Maps)


We use Matoma for visitor tracking.

Accept selection Accept all Decline all