May 8, the reporter learned from Hubei Institute of Technology, the school dynamic and energy storage power innovation team made a breakthrough in the research of natural graphite-based electrode materials, they improved the lithium ion battery anode material preparation process, greatly reducing the Preparation costs, the results published in the international well-known electrochemical magazine "Electrochim Acta". Natural graphite is the main electrode material for commercial lithium-ion batteries. The batteries are mainly used in electronic devices such as mobile phones, laptops and video cameras. Reporter learned that the battery charge and discharge in the process, due to peeling off between the graphite layer will lead to poor cycle performance, irreversible capacity, often used in industrial production modification, high temperature graphitization (2800 ℃ or so) and other processes to improve the electrode material Performance, preparation costs have also been high. "Lithium-ion batteries are made of cathode materials, anode materials, battery separators and packaging materials, and our research is aimed at the anode materials." Dr. Ding Yu, the first author of the research paper and the school of chemistry and materials science of the university, told reporters that they An in-situ oxidation-reduction method was used to lower the material preparation temperature from 2800 ° C to 700 ° C, which meant that the power consumption per hour dropped from 100 kW / h to 4 kWh / h. "This is still for the experimental reactor, if it is for industrial use, energy consumption will be reduced more." In addition to a significant reduction in energy consumption, they also simplify the preparation of negative electrode materials and enhance the reversible capacity and cycle performance of the electrode materials through the synergistic effect of nanoparticles and natural graphite. The preparation process is simple, the cost is low, the compaction density of the product is high, the preparation cost is one-tenth of the cost of the industrial graphite-based negative electrode material prepared by the industrialization at present, and the team has already started to enlarge the experiment with relevant enterprises and has applied for the national invention patent. It is reported that Hubei Institute of Technology in recent years, remarkable results of cooperation in production, "a new ballast track insulation materials and raw materials and product development," was identified as the international advanced level, Hubei Province is one of the most influential university research achievements, and create economic benefits 200 million yuan; "Lithium-ion battery - nickel-metal hydride battery key technology research" project each year for the enterprise output value of nearly yuan; to high-quality rice "Prince rice" as the representative of crop cultivation technology and promotion of research and development, each year to create economic benefits Tens of millions.
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