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Batteries: Higher energy density than gasoline?

2009; Elsevier BV; Volume: 37; Issue: 7 Linguagem: Inglês

10.1016/j.enpol.2009.02.030

1873-6777

Michael J. Fischer, Mathew Werber, Peter Schwartz,

Green IT and Sustainability

The energy density of batteries is two orders of magnitude below that of liquid fuels. However, this information alone cannot be used to compare batteries to liquid fuels for automobile energy storage media. Because electric motors have a higher energy conversion efficiency and lower mass than combustion engines, they can provide a higher deliverable mechanical energy density than internal combustion for most transportation applications.