I've chosen this rather strange title of energy storage, innovative but still efficient.

Because the thing is, in science we often have great ideas.

We have a new idea, a new process, a new material, a new whatever.

And this new material or whatever has highly sophisticated property with respect to a certain aspect.

So we come up with a new process, a new technology, which is very promising.

And for example, if you come from a field of energy storage, then you have extremely

high energy densities.

That's what people often aim at.

But if you look closer at it, then it might be a high energy efficiency.

But if you look really close, then the actual process performance might be much worse.

And especially the energy efficiency is quite low.

So that's what I'm working on.

So I've done lots of work on different types of energy storage.

And in the field of energy storage, there are, of course, what most people think of

is batteries.

And if you join my lecture, then you actually hear something about batteries.

But I'm not working on batteries.

I'm an Erlang.

And in Erlang, of course, we love hydrogen.

So we're going to talk a lot about hydrogen storage today.

Another thing is latent heat storage.

So thermal energy storage can be done by different ways.

We can use sensible heat, where we can heat something up.

We can change the phase of a melting process.

And that's what I want to talk about here.

And another option is using a chemical reaction.

There are many chemical reactions that could be used.

I've also worked on that, those thermochemical energy storages.

But I'm going to skip this one, as well as the last thing, the energy system total analysis.

Those are also fields I'm working on.

But for time constraints, I'm going to focus on these two things to have at least a chance

to have a little more detail on that.

So first, let's talk about hydrogen storage.

And if we are in Erlangen, then, of course, there's not only one way.

But let's say there's a major way of storing hydrogen in Erlangen.

And that's, of course, LOHC.

I don't want to present all the details of what's the idea of LOHC, because I think many

people here know what's LOHC and how it works.

Just a few brief words on this for those people who don't know the technology.

The idea is we store hydrogen by binding it chemically to a carrier.

And we don't do physics option, but it's a real chemisorption with covalent bonds.

So the hydrogen is really fixed.

And it's fixed at ambient conditions.

So at ambient conditions, we don't need no high pressure, low temperature.

We can store it at a high energy density.

And we do this by having a chemical component, the LOHC material, being hydrogenated catalytically

at high pressure, forming the corresponding hydrogen-rich component, which afterwards

releases the energy.

So how could such a process chain, we talked a little bit about process chain, that's a

focus for me today, look like?