Table 4 Competitive functional power density for a variety of capacitors.

From: Advancing battery design based on environmental impacts using an aqueous Al-ion cell as a case study

Capacitor type

GWP (kg CO2 eq.)

Al-ion competitive power density (kW kg−1)

Graphene super capacitor

2.53

51.58

Activated carbon supercapacitor

1.05

124.29

MLCC

1.13

115.49

TEC

29.6

4.41

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