Are there solar ion batteries for clocks?

What types of electricity storage are there?

Electricity can be stored in different ways. This happens on a large scale, for example, in pumped storage plants or through the use of solar power for the electrolysis of water (power to gas). The resulting hydrogen can be converted into methane and burned or converted back into water in a fuel cell.

The storage of electricity in the form of chemical energy plays a key role. The battery storage or accumulators (short "accumulators") designed for this purpose are used in almost all areas of life. The small batteries for remote control or for operating a digital clock have long been known.

Especially in the context of digitization, the need for batteries is constantly growing. No mobile device, whether laptop or smartphone, can do without it. The increasing replacement of cars with internal combustion engines by electric cars is also creating an increasing demand for battery storage systems, as is the need to store excess PV electricity.

But that is by no means all: The energy transition makes it necessary to switch to renewable energy sources such as wind, water and sun. In addition, the need for clean electricity will continue to rise, because heat generation and mobility will also be converted to electricity as part of the so-called sector coupling.

The increasing share of renewable energies in turn leads to new challenges. Since wind power and solar energy in particular are volatile, i.e. their supply fluctuates greatly, storage solutions with enormous capacities are required to stabilize the grid. In addition to other technical solutions, battery storage systems are also used for this purpose.

The little digression shows that there is already a large range of battery storage systems, which is also constantly expanding. The technology has never been researched as intensively as it is at the moment, because electricity storage systems play a central role in the energy transition. In the near future, numerous new developments are to be expected, not just in the form of better batteries.

Capacities, energy density, discharge capacity

Due to the different tasks, the numerous power storage systems differ significantly from one another. The retrievable potential of a battery storage system is called capacity designated. It is easy to understand that the power storage of smartphones and laptops require a much lower capacity than e.g. the battery of an electric car. While the laptop batteries only have to supply the display and a processor with energy, the car battery is supposed to accelerate a vehicle that weighs several hundred kilograms to 100 km / h and more.