Japan supports research on post-technology lithium-ion batteries

One of the major obstacles to the development of electric vehicles and planes as the Solar Impulse is the autonomy and performance of batteries. The battery of the future should be compact, lightweight, powerful and easily rechargeable, but also have great autonomy.
Today, many technologies already exist with returns that differ depending on the amount of stored energy (in Wh / kg).  The traditional lead-acid batteries can provide from 30 to 50 Wh / kg, the nickel-cadmium (Ni-Cd) from 45 to 80 Wh / kg.  The nickel metal hydride (NiMH) range from 60 to 120 Wh / kg, followed by the lithium-ion (110 to 160 Wh / kg) or the lithium metal polymer (100 to 130 Wh / kg). The lithium-ion batteries will not go beyond an energy density of 300 Wh / kg, despite all the improvements. As a comparison gasoline, has an energy density of 13,000 Wh / kg.
According to a recent report published by the Embassy of France in Japan, the road map provides for the development of powerful batteries (500 Wh / kg) in 2030 for a cost not exceeding €0.09 / Wh , against €0.9 / Wh today.  The objective is to develop by 2013 a rechargeable battery to an energy density three times that of existing models, a precursor to 2030 a battery five times more energy dense