Functionalized Nano-porous Silicon Surfaces for Energy …
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Fig. 5 Graphene coating on porous silicon. a Scheme of the effect of coating p-Si on the capacitive
charge storage properties. SEM cross-sectional images of porous silicon showing the interface
between the etched porous silicon and the silicon wafer for the case of b uncoated, pristine porous
silicon and c graphene coated porous silicon
Ragone plot was constructed to show the energy–power characteristics of this device
that include specific and volumetric energy storage capacity shown in Fig. 6a and b
respectively. The graphene-coated PS has shown ~50X lesser resistance than fresh
Fig. 6 Specific and volumetric Ragone plots for coated and pristine porous silicon Ragone analysis
for pristine, uncoated p-Si (blue, squares) and graphene-coated p-Si (red, circles) in the framework
of both a specific and b volumetric energy storage characteristics
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Fig. 5 Graphene coating on porous silicon. a Scheme of the effect of coating p-Si on the capacitive
charge storage properties. SEM cross-sectional images of porous silicon showing the interface
between the etched porous silicon and the silicon wafer for the case of b uncoated, pristine porous
silicon and c graphene coated porous silicon
Ragone plot was constructed to show the energy–power characteristics of this device
that include specific and volumetric energy storage capacity shown in Fig. 6a and b
respectively. The graphene-coated PS has shown ~50X lesser resistance than fresh
Fig. 6 Specific and volumetric Ragone plots for coated and pristine porous silicon Ragone analysis
for pristine, uncoated p-Si (blue, squares) and graphene-coated p-Si (red, circles) in the framework
of both a specific and b volumetric energy storage characteristics