"Lithium-ion battery consists of a positive electrode material, anode material, battery separator, packaging material, our research is directed to one of the anode material."
May 8, the reporter learned from Hubei College of Engineering, the school power and energy storage power innovation team has made a breakthrough in the study of natural graphite-based electrode material aspect, they improve the preparation process of lithium-ion battery anode material, greatly reducing preparation costs, this result in the world's leading professional journal electrochemistry "Electrochim Acta" published.
Natural graphite electrode materials is a major commercialization of lithium-ion batteries, such batteries are mainly used in mobile phones, laptop computers, cameras and other electronic devices. Reporters learned that the battery charge and discharge process, due to produce graphite intercalation peeling lead to poor cycle performance, high-capacity irreversible, often using modified industrial production, high temperature heat treatment (about 2800 ℃) and other technology to improve the electrode material performance, production cost has been high.
"Lithium-ion battery consists of a positive electrode material, anode material, battery separator, packaging material, our research is directed to one of the anode material." Study first author, Chemistry and Materials Science, Dr. Ding Yu told reporters the school, they using an in-situ oxidation - reduction process since the temperature of the material prepared by the previous 2800 ℃ reduced to 700 ℃, which means that power consumption per hour from 100 kilowatts / hour to 4 kilowatts / hour. "This is for the experimental reactor, if it is industrial use, energy consumption will be reduced even more."
In addition to significantly reduce energy consumption, but they also simplifies the fabrication process of the negative electrode material to improve the reversible capacity and cycling performance electrode material nanoparticles and synergies through natural graphite. The preparation process is simple, low cost, high product compaction density, production cost is one of the industrial preparation of natural graphite based anode material cost is, and the team has begun to scale-related businesses, and has applied for national patents.
It is reported that Hubei Institute of Cooperative remarkable achievements in recent years, "a new reinforced insulation ballastless track folder raw materials and product development," was identified as the international advanced level, is one of the universities of Hubei Province, the most influential scientific research, create economic benefits 200 million yuan; "lithium-ion batteries - NiMH batteries key technologies" project each year for new business value of nearly 200 million yuan; to high-quality rice, "Prince rice" as the representative of crop technology and promotion of research and development, and create economic benefits annually tens of millions.