German Li-ion Pride

Thursday 30th May 2013

Researchers in Germany have made a breakthrough in lithium-ion battery technology. Working at the Solar Energy and Hydrogen Research (ZSW) in Ulm, scientists improved the cycle stability of li-ion batteries, which impact on the cell’s life expectancy, with 10,000 full cycles achieved from the developing technology.

The development points towards the manufacturing of large-size ‘pouch cells’ as used in electric vehicles (EV) and for solar power storage - so any advance in technology impacts on green energy efforts elsewhere.

Dr. Margret Wohlfahrt-Mehrens, Head of the Accumulator Material Research Department at ZSW explains the importance of their work: “After 10,000 complete charging and discharging cycles with a complete charge and discharge cycle per hour (2 C), our lithium batteries still have more than 85% of the initial capacity. That also provides excellent prospects for a long calendar life.”

A long life for Li-ion batteries is vital for the further development of electric cars, if batteries can last for 10 years without dropping below 80% of their energy rating, it will make EVs far more viable as a long term transport solution.

The team has also been able to develop further improved features in the batteries, such as cells that have a power density of 1,100 watts per kilogram, which quantifies the available power per weight resulting in shorter charging times and excellent acceleration capability.

Source: Solar Energy and Hydrogen Research.

Categories: General, Reviews, Technology

Thursday 30th May 2013

Add New Comment:


To Comment you must be a member of The ESA, please login or register to join

I am so glad that we are living in an era where such wonderful inventions are being made and we are getting the privilage of using them also.

Commented By Danny Ply on Tuesday 4th June 2013 07:24:33