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release time:2024-04-19 Hits: Popular:AG11 battery
my country's new flexible color-changing battery and electric vehicle R6 Carbon battery have achieved major breakthroughs
Internationally, the technical level of various R&D teams in batteries has been improving, and reports on research results have continued one after another. On the 14th, relevant media announced two research results obtained by my country in the battery field, which are of relatively high quality. Great meaning.
The first result is the research on new flexible color-changing batteries by the research group of Professor He Gang of Xi'an Jiaotong University. Recently, its research results were published in the form of a paper in the internationally authoritative journal "Applied Chemistry" in Germany. Media reporters learned from Xi'an Jiaotong University that Professor He Gang's research team from the school's Institute of Frontier Science and Technology successfully prepared a chalcogen-containing ionogen polymer and applied it as an electrode material in organic radical lithium-ion batteries.
Ionogen compounds are cationic organic molecules with excellent redox properties. Under applied voltage or light conditions, it can undergo a two-step reversible single-electron redox to generate a radical positive ion state and a neutral molecular state, accompanied by obvious color changes. Its unique redox properties make it widely used in the field of energy storage materials, such as inorganic/organic lithium/sodium/magnesium ion batteries, aqueous organic flow batteries, organic radical batteries, and lithium-oxygen batteries.
Applying chalcogen-containing ionogen compounds to organic free radical lithium-ion batteries can not only greatly improve the performance of free radical batteries, but also combine the color-changing properties of such molecules with battery performance to develop new organic color-changing batteries. . Although viologen compounds have the advantages of not containing rare metals, adjustable redox properties, and flexible design at the molecular level, organic radical batteries, as an emerging type of energy storage devices, also have the problem of low redox states and limited capacity. Defects such as low density and poor stability have greatly limited its application, and this problem requires subsequent research to solve. In any case, this research work not only developed a new type of organic free radical battery, but also provided new ideas for research in the field of color-changing batteries.
The second research result is a huge breakthrough made by Professor Chen Hao of China University of Mining and Technology and his team in the field of lithium-ion batteries for electric vehicles. The "key technologies and applications of new power systems for electric vehicles" studied by the team have made breakthroughs in the power system of electric vehicles. Technical bottleneck, won the first prize of the Provincial Science and Technology Progress Award.
Electric vehicles are hailed as the future of clean energy transportation. Electric vehicles have always been committed to shortening the most obvious gap compared with fuel vehicles - endurance, and the energy density of power batteries has become the core of various research and development teams.
Professor Chen Hao introduced that in order to lead the trend of rare earth-free drive motors and the development of ternary lithium-ion batteries in the direction of high nickel and low cobalt, the research group developed a rare earth-free switched reluctance motor drive system and ternary high-nickel lithium-ion power Research on key technologies for new battery-based electric vehicle power systems has achieved a series of innovative results:
Invented the output torque smoothing control method of switched reluctance drive motor for electric vehicles;
Proposed design indicators for electric vehicle switched reluctance motor drive systems, and participated in the formulation and promulgation of national standards for stator winding insulation applicable to switched reluctance drive motors;
Invented a new method for preparing high-energy-density power lithium-ion batteries for electric vehicles. The specific energy of the ternary nickel-R6 Carbon battery is greater than 230Wh/kg, and the capacity retention rate reaches more than 95%...
High energy density power R6 Carbon battery
Professor Chen Hao said, "For real electric vehicles to be promoted and applied and enter the homes of ordinary people, sales costs and operating costs are very critical." The battery developed by the research group can run at least 10% more mileage on a single charge, and the motor The life span can be extended by at least 30%. At the same time, the cost has dropped significantly. Compared with rare earth motors of the same batch, the cost of motors can be reduced by more than 35%.
The research results of relevant Chinese teams in these two battery technologies are very outstanding. How far the battery can go and how wide its coverage is also depends on whether it can continue to advance in science and technology.
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