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  2. Energy density - Wikipedia

    en.wikipedia.org/wiki/Energy_density

    In energy storage and fuels. For energy storage, the energy density relates the stored energy to the volume of the storage equipment, e.g. the fuel tank. The higher the energy density of the fuel, the more energy may be stored or transported for the same amount of volume. The energy of a fuel per unit mass is called its specific energy.

  3. Energy density Extended Reference Table - Wikipedia

    en.wikipedia.org/wiki/Energy_density_Extended...

    Energy densities table. Storage type. Specific energy (MJ /kg) Energy density (MJ/ L) Peak recovery efficiency %. Practical recovery efficiency %. Arbitrary Antimatter. 89,875,517,874. depends on density.

  4. Power density - Wikipedia

    en.wikipedia.org/wiki/Power_density

    Power density, defined as the amount of power (the time rate of energy transfer) per unit volume, is a critical parameter used across a spectrum of scientific and engineering disciplines. This metric, typically denoted in watts per cubic meter (W/m 3), serves as a fundamental measure for evaluating the efficacy and capability of various devices ...

  5. Watt-hour per kilogram - Wikipedia

    en.wikipedia.org/wiki/Watt-hour_per_kilogram

    The watt-hour per kilogram (SI symbol: W⋅h/kg) is a unit of specific energy commonly used to measure the density of energy in batteries and capacitors. SI Units

  6. Lithium-ion battery - Wikipedia

    en.wikipedia.org/wiki/Lithium-ion_battery

    A lithium-ion or Li-ion battery is a type of rechargeable battery that uses the reversible intercalation of Li + ions into electronically conducting solids to store energy. In comparison with other commercial rechargeable batteries, Li-ion batteries are characterized by higher specific energy, higher energy density, higher energy efficiency, a longer cycle life, and a longer calendar life.

  7. Specific energy - Wikipedia

    en.wikipedia.org/wiki/Specific_energy

    L 2 T − 2 {\displaystyle {\mathsf {L}}^ {2} {\mathsf {T}}^ {-2}} Specific energy or massic energy is energy per unit mass. It is also sometimes called gravimetric energy density, which is not to be confused with energy density, which is defined as energy per unit volume. It is used to quantify, for example, stored heat and other thermodynamic ...

  8. Volumetric heat capacity - Wikipedia

    en.wikipedia.org/wiki/Volumetric_heat_capacity

    The volumetric heat capacity of a material is the heat capacity of a sample of the substance divided by the volume of the sample. It is the amount of energy that must be added, in the form of heat, to one unit of volume of the material in order to cause an increase of one unit in its temperature. The SI unit of volumetric heat capacity is joule ...

  9. Lithium–air battery - Wikipedia

    en.wikipedia.org/wiki/Lithium–air_battery

    40.104 MJ/kg (11,140 Wh/kg) theoretical. Energy density. J / m³. Specific power. 11,400 W / kg. Nominal cell voltage. 2.91 V. The lithium–air battery (Li–air) is a metal–air electrochemical cell or battery chemistry that uses oxidation of lithium at the anode and reduction of oxygen at the cathode to induce a current flow.