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Table 1 SiNWs/SiNWs micro-ultracapacitors surface capacitances obtained from the galvanostatic charge/discharge (Formula 2) at 5 and 10 μA cm −2

From: Micro-ultracapacitors with highly doped silicon nanowires electrodes

SiNWs length (μm) j = 5 μA cm−2 j = 10 μA cm−2
C (μF cm−2) C (i μm)/C (5 μm) C (μF cm−2) C (i μm)/C (5 μm)
5 3.6   3.5  
10 7.2 2.0 6.7 1.9
20 9.7 2.7 9.5 2.7