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Table 1 Comparative study of the current work with the available literatures in terms of long-term cycling stability and areal capacitance

From: Few-Layer Graphene Sheet-Passivated Porous Silicon Toward Excellent Electrochemical Double-Layer Supercapacitor Electrode

Type of material Passivation (material/process) Capacitance retention (retention/cycle number) Areal capacitance (mF/cm2) Reference
SiNWs N/A 99.5%/200 0.046 [25]
SiNWs SiC/CVD 95%/1000 1.7 [26]
SiC NWs N/A 95%/200,000 0.24 [27]
PSi Graphene/CVD 94.9%/5000 N/A [28]
PSiNWs Graphene/CVD 83%/5000 325 [29]
PSi Graphene/CVD 131%/10,000 8.19 This work