Studies have shown that graphene has many excellent properties that ordinary materials do not have. Applying graphene to composite materials can develop many new functional materials with excellent performance. Among them, graphene energy storage composite materials have the most industrial application prospects.  .

On April 20th, Fang Bo, director of Guangdong Yina Technology, delivered a speech on "Application of Graphene Composite Materials in the Field of Energy Storage" at the 2023 Starting Point Energy Storage Battery Technology Forum, focusing on the layout of Yina Technology in the field of energy storage . Graphene composite materials and research, and at the same time analyzed the application trend of this composite material in the field of energy storage for the industry.

Figure: Fang Bo, director of Guangdong Yina Technology Co., Ltd.

The following is the full text of the speech:

It is an innovative technology company specializing in the R&D, production and sales of nanomaterials with Sun Yat-sen University as its technical background. The company's mission is to create new applications of nanotechnology; serve customers as the purpose, and grow together with customers; adhere to innovation as the driving force for development, and take technology leadership and professional services as the core competitiveness.

The company currently has three major business segments: high-quality graphene nanomaterials for energy storage and power batteries, positive and negative electrode materials for sodium-ion batteries, and graphene nanodispersions. In terms of production capacity, the annual production capacity of powder is 400 tons, and the annual production capacity of slurry is 10,000 tons. It is at the first echelon level among domestic graphene enterprises.

The company's support platforms include the State Key Laboratory of Optoelectronic Materials of Sun Yat-sen University, the Nanotechnology Center of Sun Yat-sen University, the identification and storage of small and medium-sized scientific and technological enterprises, (973) ) major national scientific research projects and projects of the Provincial Science and Technology Department.

The founder of the company is Wang Jianxing, a postdoctoral fellow of Sun Yat-sen University, who is mainly engaged in the electrochemical application research of nanomaterials. He has successively served as the person in charge of new materials and battery companies. He has been deeply involved in the lithium battery industry for more than ten years and has achieved many successes.

The chief scientist of the company, Professor Yang Guowei, is currently the dean of the School of Materials Science and Engineering of Sun Yat-sen University, and holds an administrative position.

The discipline of materials science and engineering is one of the 11 national "double first-class" construction disciplines selected by Sun Yat-sen University. The college has gathered high-level talents from home and abroad. National, provincial and ministerial scientific research platforms such as key energy-saving laboratories have also achieved a series of research results with important influence at home and abroad in the fields of optoelectronic nanomaterials, new energy and environmental materials, and functional polymer materials.

In terms of technical strength, Ina Technology has applied for 48 patents, 17 of which have been authorized. And has passed: 2015 quality management system certification; products have passed RoHS certification.

At present, Yinan Technology mainly has three different graphene products. One is a pure powdered product of graphene, which can be customized in different sizes according to customer needs, including purity requirements. The second is the newly developed graphene composite powder, which is currently also used as a lithium iron phosphate cathode material. The third is graphene composite conductive paste, which is very effective in the application of lithium battery negative electrodes.

The active material of the positive electrode material of the lithium-ion battery has poor conductivity, which makes the internal resistance of the electrode large, resulting in low utilization of the active material. Active materials such as hard carbon and graphite, although good in conductivity, can be damaged during multiple charge-discharge cycles. Expansion and contraction occur, resulting in poor contact between active materials. Graphene conductive agent can improve the utilization rate of active materials and improve the electrochemical performance of batteries.

In the field of graphene conductive agents, Yinan Technology has developed graphene composite electrode materials and conductive agents for sodium-ion batteries, and achieved good industrial application results.

Disclaimer: This article is published based on shorthand content of the live speech and has not been reviewed by me

Keyword tags: 2023 Starting Point Energy Storage Battery Technology Forum - Nanotechnology Graphene