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Contents

   



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1 SI Units  





2 Typical values  





3 References  














Watt-hour per kilogram







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From Wikipedia, the free encyclopedia
 

(Redirected from Wh/kg)

watt-hour per kilogram
Unit systemUnit accepted for use with SI
Unit ofSpecific energy
SymbolW⋅h/kg
Conversions
1 W⋅h/kg in ...... is equal to ...
   SI units   3600 J/kg

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

SI Units

[edit]

In the SI system of measurement, one watt-hour per kilogram is equal to 3600 joules per kilogram.

Typical values

[edit]

The batteries that Tesla uses in their electric cars deliver about 254 W⋅h/kg,[1] compared to supercapacitors that are typically rated between 3 and 10 W⋅h/kg,[2] with the best commercially available supercapacitors as high as 47 W⋅h/kg.[3]

Nuclear batteries based on betavoltaics can reach up to 3300 W⋅h/kg, although over much longer time periods.[4]

References

[edit]
  • ^ Hao Y, Santhakumar K (2013). "Achieving Both High Power and Energy Density in Electrochemical Supercapacitors with Nanoporous Graphene Materials": 3. arXiv:1311.1413. Bibcode:2013arXiv1311.1413Y. {{cite journal}}: Cite journal requires |journal= (help)
  • ^ Ronald Brakels, "Arvio Supercapacitor Energy Storage — Powerful Enough To Beat Batteries At Their Own Game?", Solarquotes.com, May 15, 2018. Retrieved 14 Oct. 2021
  • ^ Prototype Nuclear Battery, phys.org, June 6 2018
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  • Retrieved from "https://en.wikipedia.org/w/index.php?title=Watt-hour_per_kilogram&oldid=1176302728"

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    This page was last edited on 20 September 2023, at 20:49 (UTC).

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