Abstract: A method for making iridium oxide nanoparticles includes dissolving an iridium salt to obtain a salt-containing solution, mixing a complexing agent with the salt-containing solution to obtain a blend solution, and adding an oxidating agent to the blend solution to obtain a product mixture. A molar ratio of a complexing compound of the complexing agent to the iridium salt is controlled in a predetermined range so as to permit the product mixture to include iridium oxide nanoparticles.

Abstract: A wind power generation device includes a chassis carrying a wind power generation mechanism, primary and secondary power accumulators, and a driving mechanism. Power generated by the wind power generation mechanism is distributed to both accumulators. The primary accumulator functions to provide power output. The secondary accumulator is connected to the driving mechanism to supply power for driving a motor of the driving mechanism. The driving mechanism includes a gear train coupled between a spindle of the motor and a shaft of the wind power generation mechanism with a one-way bearing coupling the gear train to the motor spindle so that when the wind power generation mechanism is present in a wind still condition, the secondary power accumulator supplies electrical power to actuate the driving mechanism for maintaining operation of the wind power generation mechanism to generate electrical power that is supplied back to the primary and secondary power accumulators.

Abstract: A portable wind-driven electricity generation device is provided herein, which mainly contains a fan, a generator assembly, a primary rechargeable battery, a secondary rechargeable battery, and an auxiliary driving assembly. When there is wind, the wind would drive the generator assembly to continuously charge the primary and secondary rechargeable batteries. The electricity supplied from the generation device is drawn from the primary rechargeable battery only. When there is no wind and when the primary rechargeable battery is not yet fully charged, a motor of the auxiliary driving assembly can be engaged from the stored electricity of the secondary rechargeable battery to drive the generator assembly so that the primary rechargeable battery can be as much charged as possible.

Abstract: A decorative lighting device includes a casing, a generator assembly including an armature spindle which rotates to induce relative rotation in an electrical winding-magnet system, a counter weight device, and at least one illuminating element. The casing is attachable to a rotary body to be rotated with the rotary body. The casing defines an interior space to receive the generator assembly in such a way that the armature spindle is fixed to and rotates with the casing. The counter weight device is fixed to the generator assembly and is constructed to maintain the gravity center of the generator assembly downward by means of eccentric counterbalancing. The illuminating element is electrically connected to the generator assembly. When the rotary body rotates, a relative rotation is caused between the electrical winding and the magnet of the generator assembly to induce electrical power by electromagnetic induction. The power is then supplied to the illuminating element for emission of light.