Abstract: A power transmitter according to an embodiment of the present technology includes an antenna unit and a signal generation circuit. The antenna unit includes a first antenna conductor used in contact with a human body unconnected to ground of earth, and a second antenna conductor that is capacitively coupled to the ground of the earth without being brought into contact with the human body. The signal generation circuit applies an alternating current power signal between the first antenna conductor and the second antenna conductor.

Abstract: The present invention relates to a process for producing an anode for a secondary battery, which is capable to reduce a contact resistance between a sintered material which contains silicon as an anode active material and a current collector. A binder and a solvent are mixed with a silicon-containing anode material to prepare a slurry. A base material made of a foil or mesh of conductive metal is coated with the slurry, and the solvent is removed to form a coated film. The coated film is sintered in a non-oxidizing atmosphere, thereby integrating a sintered material of the coated film with the base material.