![]() But even lanthanum is to be replaced by something cheaper, and research into this is already underway. The prototype of the battery still uses lanthanum – an element that is not exactly rare but not completely common either. You can replace certain elements that are difficult to obtain with others relatively easily.” Tobias Huber expanded the explanation with, “In this respect, the use of ceramic materials is a great advantage because they can be adapted very well. In addition, there is no need for rare elements, which are expensive or can only be extracted in an environmentally harmful way. But our materials have some important advantages.”Ĭeramics are not flammable – so fire accidents, which occur time and again with lithium-ion batteries, are practically ruled out. Professor Jürgen Fleig explained, “The basic principle is actually very similar to the lithium-ion battery. When an electric voltage is applied, the oxygen ions migrate from one ceramic material to another, after which they can be made to migrate back again, thus generating electric current. The ceramic materials that the TU Wien team studied can absorb and release doubly negatively charged oxygen ions. That gave us the idea of investigating whether such materials might also be suitable for making a battery.” The paper describing the research ‘Rechargeable Oxide Ion Batteries Based on Mixed Conducting Oxide Electrodes.’ has been published in the journal Advanced Energy Materials.Īlexander Schmid from the Institute for Chemical Technologies and Analytics at TU Wien noted, “We have had a lot of experience with ceramic materials that can be used for fuel cells for quite some time. The oxygen-ion battery could be an excellent solution for large energy storage systems, for example to store electrical energy from renewable sources. A patent application for the new battery idea has already been filed together with cooperation partners from Spain. In addition, oxygen-ion batteries can be produced without rare elements and are made of incombustible materials. Although it does not allow for as high of energy densities as the lithium-ion battery, its storage capacity does not decrease irrevocably over time: it can be regenerated and thus may enable an extremely long service life. TU Wien has now succeeded in developing an oxygen-ion battery that has some important advantages. But that does not mean that they are the best solution for all areas of application. Lithium-ion batteries are common today – from electric cars to smartphones. Power and energy density comparison chart of modern battery chemistries and a fuel cell with a plot of the new oxygen ion chemistry. ![]() For large energy storage systems, this could be an optimal solution. Also, it does not require any rare elements and it is incombustible. If it degrades, it can be regenerated, therefore it potentially has an extremely long lifespan. Scientists at Vienna University of Technology have invented a new oxygen ion battery chemistry based on ceramic materials. ![]()
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