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There are two significant issues facing road transport in the medium to long term: the depletion of cheap oil reserves and the need to reduce carbon emissions. A long term solution for passenger cars could be the introduction of battery electric vehicles (BEVs). However, one of the main problems associated with the current generation of BEVs is the...
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... recent improvements in battery performance mean that BEVs could become a mainstream vehicle technology. In Figure 1 it can be seen that the energy density of rechargeable (secondary) batteries has increased significantly since electric vehicles were first introduced. The earliest BEVs used lead-acid batteries, which have an energy density of approximately 30-40 Wh/kg. ...
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