Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Safe Lithium Batteries with a Long Service Life

09.09.2014

With the help of new materials and additional improvements, researchers at Siemens have managed to make lithium-ion batteries safer and extend their service life.

As part of the joint research project Intrinsically Safe Battery (EiSiBatt), which is funded by the German Ministry for Economic Affairs and Energy, the engineers developed a new cell chemistry until it was sufficiently mature for general application.


As a result, it is now possible to create lithium-ion batteries that are very safe, even when they are overcharged, and that last for a much higher number of charge-discharge cycles (20,000) than the previous top value of around 5,000.

Lithium-ion batteries are very attractive energy storage systems, due to their high energy densities. In Siemens products alone, their areas of application range from small energy storage systems for hearing aids to medium-size storage systems for cranes and machine tools, and large storage systems for power grids.

... more about:
»Energy »Lithium »batteries »battery »voltage

The anodes of the new battery cells do not consist of graphite, as is usually the case, but of lithium titanate, while the cathodes are made of lithium iron phosphate instead of a lithium-metal oxide.

In addition, scientists at Siemens' global research unit Corporate Technology in Erlangen have developed a model that simulates the behavior of battery systems in which hundreds of the new cells are interconnected. This is the case, for example, with compact and large storage systems.

After numerous measurements and simulations, the scientists managed to understand the batteries' behavior and to describe it mathematically. The model not only encompasses the batteries' electrical behavior, but also their mechanical and thermal behavior.

The simulations enabled to scientists to find out how the new batteries' output and energy content are affected when the batteries are used to stabilize power networks or regulate frequencies, for example.

Facilis A team of engineers at Drive Technologies in Chemnitz developed the associated battery management system, which controls the cells' charge level. To ensure a smooth interaction, the engineers used components available from Siemens for the system concept.

For example, a Simotion control system analyzes the cells' voltage and temperature. This enables the software to take on additional tasks, such as when the battery is incorporated into a power grid or a drive network.

The new cells might give a variety of Siemens business areas a competitive edge. A demonstrator has already been created with which engineers can test various possible applications.

The project's participants also included specialists from the specialty chemicals company Clariant, the battery manufacturer Leclanché, and the Centre for Solar Energy and Hydrogen Research Baden-Württemberg (ZSW).

Weitere Informationen:

http://www.siemens.com/innovationnews

Dr. Norbert Aschenbrenner | Siemens InnovationNews

Further reports about: Energy Lithium batteries battery voltage

More articles from Power and Electrical Engineering:

nachricht New test procedure for developing quick-charging lithium-ion batteries
07.12.2017 | Forschungszentrum Jülich

nachricht Plug & Play Light Solution for NOx measurement
01.12.2017 | Heraeus Noblelight GmbH

All articles from Power and Electrical Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Towards data storage at the single molecule level

The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.

Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...

Im Focus: Successful Mechanical Testing of Nanowires

With innovative experiments, researchers at the Helmholtz-Zentrums Geesthacht and the Technical University Hamburg unravel why tiny metallic structures are extremely strong

Light-weight and simultaneously strong – porous metallic nanomaterials promise interesting applications as, for instance, for future aeroplanes with enhanced...

Im Focus: Virtual Reality for Bacteria

An interdisciplinary group of researchers interfaced individual bacteria with a computer to build a hybrid bio-digital circuit - Study published in Nature Communications

Scientists at the Institute of Science and Technology Austria (IST Austria) have managed to control the behavior of individual bacteria by connecting them to a...

Im Focus: A space-time sensor for light-matter interactions

Physicists in the Laboratory for Attosecond Physics (run jointly by LMU Munich and the Max Planck Institute for Quantum Optics) have developed an attosecond electron microscope that allows them to visualize the dispersion of light in time and space, and observe the motions of electrons in atoms.

The most basic of all physical interactions in nature is that between light and matter. This interaction takes place in attosecond times (i.e. billionths of a...

Im Focus: A transistor of graphene nanoribbons

Transistors based on carbon nanostructures: what sounds like a futuristic dream could be reality in just a few years' time. An international research team working with Empa has now succeeded in producing nanotransistors from graphene ribbons that are only a few atoms wide, as reported in the current issue of the trade journal "Nature Communications."

Graphene ribbons that are only a few atoms wide, so-called graphene nanoribbons, have special electrical properties that make them promising candidates for the...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Innovative strategies to tackle parasitic worms

08.12.2017 | Event News

AKL’18: The opportunities and challenges of digitalization in the laser industry

07.12.2017 | Event News

Blockchain is becoming more important in the energy market

05.12.2017 | Event News

 
Latest News

Making fuel out of thick air

08.12.2017 | Life Sciences

Rules for superconductivity mirrored in 'excitonic insulator'

08.12.2017 | Information Technology

Smartphone case offers blood glucose monitoring on the go

08.12.2017 | Information Technology

VideoLinks
B2B-VideoLinks
More VideoLinks >>>