Dear Friends,
how to compare the energy and power densities of a new supercapacitor fabricated in laboratory with the commercially available supercapacitors or the existing energy storage devices?
i have gone through some research article in which the authors have compared the energy and power density (in the form of Ragone plot ) that they have obtained with the commercial supercapaciotrs and with conventional energy storage devices like Li-ion battaries, fuel cells, and ultracapacitors. but i wonder how to get the reference data for making the comparison plot as they have done in their comparison study.
i have attached the few images which i have downloaded from google for the reference .
So please help me out in this regard,
thank you,
Hi Aranganathan,
I believe that the reference data is mostly from some well-known reviews about energy storage devices (supercapacitors and batteries). Some representative reviews are listed as below:
Nat. Mater., 2008, 7, 845–854;
Science, 2011, 334(6058): 928-935;
Chem. Soc. Rev., 2015, 44, 7484;
Adv. Sci. 2017, 1600539
For the performance comparison with commercial energy storage devices, you can find this reference: Science, 2011, 334(6058): 917-918.
Hopefully you find it useful.
My colleague encountered the same problem as yours two years ago. We solved the problem by:
1. Drawing a Ragone plot containing the experimental data.
2. Find a reported Ragone plot and draw the ellipses by estimating the positions.
Please keep in mind that commercial products gravimetric performance metrics (capacitance, power density and energy density etc.) mostly are normalized to the total mass of a device, including the packing materials. If your metrics are associated with active material mass only, remember to multiply a packing factor of ~20% for fair comparisons.
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