One of the customers of solid electrolyte materials from MSE Supplies, CIC energiGUNE in Europe published an interview with its scientific advisor John Kilner, Professor of Energy Materials at B.C.H.Steele Imperial College in London.
1. How do you see the future of solid state automotive batteries?The interview addresses topics such as the short-term perspectives of solid-state batteries, hydrogen as an energy storage solution in particular situations, and different storage solutions based on specific conditions.
In my opinion, solid-state batteries are essential for the development of a safe and high performance electric energy storage system for the large scale deployment of electric vehicles. Electric vehicles are already available, but they have some limitations that need to be addressed before their wholesale adoption can take place.
As is usual with technology such as this, it is essential that the new system outperforms what is currently available, in order to gain market share. In this, the solid-state battery excels in two ways.
The first is the ability to use lithium metal for the battery anode to achieve high energy density, and therefore, greater range in the electric vehicle. This is because lithium is very corrosive and requires a chemically inert material for use as an electrolyte, which has to be in firm contact with the metal anode. In this way, ceramic materials become ideal since they are very resistant to corrosion processes.
The second aspect is safety. Current lithium-ion technology requires a liquid or gel electrolyte that is flammable and toxic. So there can be problems with batteries such as overheating and fires that have occurred in electric cars or in the Boeing 777 aircraft (hence the current ban on lithium batteries in aircraft hold luggage). This overheating can happen when the battery is short-circuited internally either by accident or by an internal fault, and the high temperatures generated can lead to a fire.
Solid-state batteries are much more robust against such accidental damage, and the electrolyte itself is non-flammable, unlike liquid electrolytes. This makes the solid state battery a very attractive prospect for future batteries in electric vehicles.
Read more of this interview on CIC energiGUNE's website.
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