Ohio State Researchers Identify Why Lithium Batteries Age

Build up of lithium ions on both electrodes reduce the battery's ability to store electric charge.

Published: 17-Dec-2012

The lithium-ion batteries commonly used in hybrid and electric-only cars could fail earlier than expected because of a newly-discovered problem with the current collector.

Researchers led by Ohio State University engineers examined used car batteries and discovered that over time lithium accumulates beyond the battery electrodes, in the current collector - a sheet of copper which facilitates electron transfer between the electrodes and the car’s electrical system.

"Our study shows that the copper current collector plays a role in the performance of the battery," says Professor Bharat Bhushan.


Trolza electric bus prototype developed in Russia and first exhibited in October 2011 in Moscow.

New factory, a joint venture between RUSNANO and Thunder Sky, will have 1 GWh capacity, equivalent to equipping 500,000 electric buses.

Zabuye Salt Lake in Tibet

Gabriel Lafitte recounts environmental damage being done by extraction of lithium from Tibet's high mountain salt lakes.

Salinas Grandes, in Northwestern Argentina covers 17,000 sq. km. Flickr photo by Guslight.

Mineral compounds containing lithium are abundant in a vast region in southern Bolivia, northwest Argentina and northern Chile


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