Mitsubishi Denki Kabushiki Kaisha

Shinshu University

Shigeyuki Sugimoto

Katsuhiko Chonan

Wataru Sugimoto

Sho Makino

Masayuki Kato

A lithium composite negative electrode which allows a hybrid capacitor to operate at room temperature by reducing interfacial resistance in the electrode, a hybrid capacitor comprising the composite negative electrode, and manufacturing methods thereof. The lithium composite negative electrode is a laminar electrode including a lithium ion conductive solid electrolyte, an alginate gel electrolyte, and lithium-doped carbon. Further, a hybrid capacitor includes a positive electrode including a carbon material and/or a metal oxide, the lithium composite negative electrode, and a neutral aqueous electrolyte filled between the positive electrode and the lithium composite negative electrode. The lithium composite negative electrode is configured as a laminar electrode including the lithium ion conductive solid electrolyte, the alginate gel electrolyte, and the lithium-doped carbon.

Lithium composite negative electrode and hybrid capacitor, and manufacturing methods thereof

The voltage in a converter 20 is compared with a reference voltage to detect an input power failure, in response to which a motor driven by the converter is automatically decelerated in accordance with a stored signal pattern/speed reduction curve such that the energy regenerated by the motor is equal to its power consumption. The DC bus voltage of the converter is thus maintained substantially constant during the regenerative braking of the motor, and it is promptly halted without resort to any mechanical braking unit.

Growing community of inventors

Nagoya, Japan

Shigeyuki Sugimoto