Research network on electrochemical energy storage,
Research center on batteries and supercapacitors

Use in the field of automobile

Use in the field of automobile

The car industry business as it is today must change because of the decrease in fossil energies, and pollution problems, all of which are increasing due to the rise in population.  Facing such a scenario, in a few years time our gas or diesel vehicles will be progressively replaced by electric vehicles that will be more and more publicized and highly valued. Such a broad acceptance of EV will be facilitated by the development of  more performing batteries.

Yet we must stress that the batteries/electric vehicles marriage, in spite its recent publicity, is not new and goes back to the end of the 19th century when the ‘Jamais contente’, which Pb-acid battery autonomy was 89km, reached 109km!  Moreover, let’s note that in 1900 in the USA there were 1500 electric vehicles against 1500 thermal cars and that in 1914, 30% of the cars were still electric.  Why did they nearly disappear? 2 main reasons:  on one hand the abundance of fossil energies with their easy use and on the other the limited performance of electrochemical systems.  In spite of the progress made, it is still the limited autonomy of the batteries that today slows down the speedy deployment of the electric vehicle (EV) even Hybride Electric Vehicles (HEV’s).

Batteries are today one of the priority topic for which RS2E performs its research in a very competitive international context where the run for the number of kms and for the autonomy of the electric vehicles represents a gigantic stake. Since Gaston Planté’s Pb-battery, batteries have followed a steady technological evolution and progresses are important; but nevertheless there is presently no entirely satisfactory solution for electric vehicles applications and still less for grids applications ..  Scientific breakthroughs are necessary. Therefore batteries are presently one of the subjects that have priority and for which RS2E is performing its research in the hope of i) improving the existing systems and ii) developing new ones.  This is a gigantic stake.

A sizeable supplementary cost results from the limitations in relation to battery performances.  For example, today a 20Kwh battery costs 10000 euros.  In order to boost the sales, the government has set up a plan to support the car industries with an ecological bonus for the less polluting cars.  The bonus for the purchase of a new electric vehicle can range from 5000 to 7000 euros and from 2000 to 4000 for hybride.