3results about How to "Improve electrical output performance" patented technology

The invention discloses a foamy copper framework-based heterogeneous material for a friction nano-generator and a preparation method and application thereof, the foamy copper framework-based heterogeneous material takes foamy copper as a framework and platinum catalytic silicone rubber as a filler, and the foamy copper and the platinum catalytic silicone rubber form a three-dimensional interpenetrating structure. The preparation method comprises the following steps: (1) firstly putting foamy copper into absolute ethyl alcohol for ultrasonic cleaning, and then putting the foamy copper into diluted hydrochloric acid for ultrasonic cleaning; (2) preparing a platinum catalyzed silicone rubber liquid; (3) pouring platinum catalytic silicon rubber liquid into the foamy copper until pores of the foamy copper are completely filled with the platinum catalytic silicon rubber liquid; (4) after pouring is completed, the mold is transferred to be subjected to exhaust treatment under the ultrasonic condition; and (5) the mold is placed in a drying box to be subjected to curing treatment. The foamy copper framework-based heterogeneous material for the friction nano-generator prepared by the invention can be used for a three-dimensional electrode of the friction nano-generator, and the electric output performance of the friction nano-generator can be effectively improved.

The application discloses a preparation method of an ionic hydrogel-based humidity generator for efficient power generation and self-powered sensing. By preparing an ionic hydrogel prepolymer solution rich in active functional groups, a pre-polymer hydrogel is formed by short-time initial ultraviolet irradiation. After the pre-polymer hydrogel is transferred to the surface of an electrode, secondary ultraviolet irradiation is performed to enable chemical bonding and interpenetrating network structure between the hydrogel and the electrode. Finally, an active metal top electrode is attached. Through the synergistic design of the two-step curing method and the active electrode, on the one hand, the firm interface combination of the hydrogel and the electrode is realized, and the contact impedance is significantly reduced; on the other hand, the additional output is generated by the redox reaction between the active electrode and the hydrogel, thereby greatly improving the electrical output performance of the device. The obtained generator has excellent electrical output performance in a wide temperature and humidity range, and can be integrated for power supply and used as a high-sensitivity self-powered sensor, and has application prospects in the field of flexible wearable devices.

This invention discloses an accelerometer based on a single-end cantilever structure with dual graphene and its fabrication method, belonging to the field of semiconductor device processing and manufacturing technology. The method involves growing silicon dioxide thin films on the front and back sides of a substrate using plasma-enhanced chemical vapor deposition (PECVD) to prepare an insulating layer and a hard mask layer. Metal markers and metal electrodes are fabricated on the insulating layer using a lift-off process or dry etching. The insulating layer is patterned using plasma etching, followed by deep silicon etching to pattern a silicon-based mass block. Cavity etching is performed on the back side of the substrate using both plasma etching and deep silicon etching. A two-dimensional material film, comprising a single-layer / double-layer graphene film, is transferred to the front side of the substrate and patterned. The mass block is then released using plasma etching and hydrogen fluoride vapor phase etching, completing the fabrication of the accelerometer based on the single-end cantilever structure with dual graphene.