National Chung Shan Institute of Science and Technology

Wu-Ching Hung

Chien-Liang Chang

Jeng-Kuei Chang

Bo-Rui Pan

Wei-Jen Liu

Pin-Chun Lin

Kuei-Ting Hsu

Jhao-Yi Wu

In this patent, a high energy and power density supercapacitor was invented. A coin cell with supercapacitor includes a spring lamination, a working electrode, a counter electrode, a separator, and an Organic electrolyte. The working and counter electrodes were Activated carbon/N-doping porous graphene/binder coated on Aluminum substrate. The separator was from Nippon Kodoshi Corporation. The Organic electrolyte was 1M TEABF4/PC. The method of producing N-doping porous graphene included the following steps: Step 1: Graphite oxide (GO) was transferred into the furnace. Step 2: Inject 50 c.c./min gas flow of Nitrous oxides for one hour. Step 3: Intensify 40 Celsius degrees/min to 900 Celsius degrees and after holding for one hour, lower the temperature naturally to the room temperature, it can be prepared into N-doping porous graphene. In this patent, the capacitance of the supercapacitor is 122 F/g and the power density is 31 kW/Kg.

Nitrogen-doping porous graphene material in supercapacitor and production method thereof

A high volumetric energy and power density supercapacitor is provided. This supercapacitor includes a coin cell, a spring lamination, a working electrode, a counter electrode, a separator, and an ionic liquid electrolyte. The working and counter electrodes are N&#x2014;P doping porous graphene coated on Al substrate. The ionic liquid electrolyte is EMI-FSI. The method of producing N&#x2014;P doping porous graphene includes following steps: S: Graphite oxide is quickly transferred into the furnace, which had been held at 300&#xb0; C. and the porous graphene can be produced. S: The porous graphene and red phosphorus are put together in the evacuated tube furnace and heated to 700&#xb0; C. for 1 hr. S: Heated to 800&#xb0; C. for 30 min in a mixed argon and ammoniac atmosphere and then the N&#x2014;P doping porous graphene can be made. The capacitance of the supercapacitor is 105 F/g and the volumetric power density is 1.19 kW/L.

Supercapacitor of N&#x2014;P doping porous graphene material in ionic liquid electrolyte and method for preparing thereof

A silver particles manufacturing method comprises following steps: providing a silver containing compound; providing an organic solution; adding the silver containing compound into the organic solution, to perform ultrasonic vibrations or a heating process until the silver containing compound is dissolved completely into the organic solution, to form a silver ion solution; performing the ultrasonic vibrations or the heating process, and then let the solution settle down for a period, to form a silver particles synthesized solution; and placing the silver particles synthesized solution into a centrifuge to perform centrifugation and separation, to obtain &#x3bc;m-scale silver particles and nm-scale silver particles. The silver particles manufacturing method has the advantages of low pollution, low cost, high yield, and mass production.

Silver particles manufacturing method

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Taoyuan, Taiwan

Wu-Ching Hung