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Spherical α-Ni(OH)2 nanoarchitecture grown on graphene as advanced electrochemical pseudocapacitor materials

Shubin Yang1, Xilin Wu, Changlun Chen

  • 1Key Laboratory of Novel Thin Film Solar Cells, Institute of Plasma Physics, CAS, 230031, Hefei, China.

Chemical Communications (Cambridge, England)
|February 9, 2012
PubMed

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Spherical and Cylindrical Capacitor01:26

Spherical and Cylindrical Capacitor

A spherical capacitor consists of two concentric conducting spherical shells of radii R1 (inner shell) and R2 (outer shell). The shells have equal and opposite charges of +Q and −Q, respectively. For an isolated conducting spherical capacitor, the radius of the outer shell can be considered to be infinite.
Conventionally, considering the symmetry, the electric field between the concentric shells of a spherical capacitor is directed radially outward. The magnitude of the field, calculated by...