South are power: true and false graphene battery doubt cloud

Nandu Power recently announced that the company’s two invention patents—a lead-carbon battery cathode plate containing lead-graphene composite materials and a lead-graphene composite material—are currently in declared state, and they have been awarded by the State Intellectual Property Office. There is still uncertainty about the authorization, and it has no effect on the company's production, operation and performance.

Explain that the announcement is too professional and difficult to tell

Nandu Power announced in an announcement that the company said that the two companies had to explain the above two patents, saying that “Nandu Power officially applied for two patents to create a precedent for the application of graphene batteries” in the near future.

According to the announcement, on September 29, 2012, the company applied to the State Intellectual Property Office for two invention patents: "a lead-carbon battery cathode plate containing lead-graphene composites" and "a lead-graphene composite material." The applicants for the above two invention patents are Nandu Power Supply, Hangzhou Nandu Battery Co., Ltd., and Hangzhou Nandu Energy Technology Co., Ltd. According to the patent application, the first patent “A lead-carbon battery cathode plate containing lead graphene composite material” is described as “a uniform mixing of lead powder and graphene carbon material, effectively buffering large instantaneous currents, resisting negative electrodes. The sulphation of the surface improves the negative electrode charge acceptance capability, significantly improves the HRPSoC cycle performance of the battery, and has a broad application prospect in the fields of hybrid vehicles, solar energy, and wind energy storage.

The patent of the second patent "A lead-graphene composite material" describes that "the effective combination of lead particles and graphene sheets can be realized, and even more uniform mixing of the negative electrode active materials of lead-acid batteries such as lead powder can be realized. The lead graphene composite material of the present invention is directly used as a negative electrode of a lead-acid battery, or as a negative electrode additive of a lead-carbon super battery, which can significantly improve the battery charge acceptance and HRPSoC cycle life.

Nandu Power also stated in the announcement that the above two patent applications have been formally accepted by the State Intellectual Property Office and are now in a public state. They will enter the substantive review stage within 1-2 months. Whether or not there is authorization is still uncertain. . In addition, the company also stated that the above two patented technologies are still in the stage of research and development and trial, and there are certain uncertainties in the actual application in the future. At present, there is no impact on the company's production and operation and performance.

Although Nandu Power issued timely announcements, professional descriptions and repeated appearances of graphene still make investors difficult to tell the truth.

Experts claim that the patent and the graphene battery are two things

According to People's Daily, researchers at the University of California, Los Angeles, have recently announced a new type of battery they have developed. The device called miniature graphene supercapacitors can charge or discharge 100 to 1000 times faster than conventional batteries. In a few seconds, the phone, even the car, is fully charged. This news subsequently also ignited the imagination of the A-share market for "graphene batteries."

In response to the announcement of Nandu Power, the reporter interviewed Professor Zhao Binyuan, deputy director and doctoral supervisor of the Materials Industry Engineering Research Center (MIE) of Shanghai Jiaotong University, who specializes in research on environmental protection and energy materials. "The above patents of Nandu Power are not called 'graphene batteries', and it is totally different from the US's invention of the "micro-graphene supercapacitors." The patent of Nandu Power should be referred to as the improved technology of graphene materials for lead-acid batteries. That's right," Zhao Binyuan said.

Zhao Binyuan told reporters that according to his understanding, the above two invention patents of Nandu Power are related patents in the same direction of research; among them, the second patent is related to graphene materials; and the first patent is the first Two patent applications.

According to Prof. Zhao Binyuan, lead-acid batteries have a place in the existing battery market because of their unique low cost, mature technology, and large energy storage capabilities. Therefore, Nandu Power's related technologies can successfully apply for patents and successfully implement the industry. The application will increase the competitiveness of its own products in the lead-acid battery market.