Battery for electric bus

In 2011, the Novosibirsk plant earned "Liotech" assembly of large-sized lithium-ion batteries (LIB) for electric vehicles. Today it is the only such facility in Russia, but production still goes on Chinese technology and materials from China. To replace the import Russian counterpart, the corporation "RUSNANO", co-owner of "Liotech", entered into an agreement with Institute of Solid State SB RAS, which is working to improve the battery.

Author of the report: Eugene Treuhova, VF NSU student

  • Graduate student Olga Podgornova sleep blend, which will grind to a drum filled with balls.
  • Graduate student Olga Podgornova sleep blend, which will grind to a drum filled with balls.

At the "Liotech" produce batteries with unique properties (they run from -40 to +50 C) They are used for trolley buses, electric buses and other electric vehicles. Now in Novosibirsk, DC route goes Electrobus number 5a from the metro station "Zaeltsovskaya" to "TPP-5". It can travel 60 km to go off without recharging.

To learn about how our scientists are catching up with the world, and see the progress of the development, I went to the lab, where they create a cathode materials for lithium batteries, "Liotech." I have found the right body at once, helped me a friendly employee of the Institute of Solid State Russian Academy of Sciences: "This laboratory building! What have you strayed? "Scientists — sympathetic people, just found a guy who took me straight to the correct laboratory.

 

I met a senior researcher Ph.D. Nina Kosovo, team leader of "Materials for the LIA." Before we show the stages of the experiment, she spoke about the essence of their work.

  • "The planetary mill" for grinding material to nanoscale.
  • "The planetary mill" for grinding material to nanoscale.

The research team led Kosova looking for a way to create materials with high electronic and ionic conductivity. In 2000, the American physicist John Goodenough suggested using lithium iron phosphate batteries. It is taken in the state of the nanoscale, and on its surface a layer of particles of highly conductive carbon coating. The properties of the material change, and it becomes suitable for use in batteries.

In the laboratory ISSCM RAS work with natriyzhelezoftorfosfatom lithium. Materials differ primarily structure. Battery with the cathode much longer runs, a lot of time "is held" without charge.

— Here's our "planetary mill." Now Olga show you how it works — explains Nina Kosovo. — In order to obtain the desired material, first the reaction mixture was milled in a mill to the nanoscale. That's what is required of such a unit, similar to a large chest (this is for sound insulation).

  • The ground mixture was placed in a furnace and sintered.
  • The ground mixture was placed in a furnace and sintered.

Graduate student Olga Podgornova sleep blend, which will grind to a drum filled with balls and twists it a big wrench. Then put everything in the "planetary mill." Works that very interesting. Her drums rotate around its own axis and around the general, as the planets in the solar system, are two of exposure ¬ — shift and blow. This provides a much smaller particle size than if they grind a conventional ball mills. By the way, "planetary mill" is also developed at the Institute of Solid State Chemistry and Mechanochemistry.

Then the mixture was placed in a furnace and sintered. Then Vlad Podugolnikov, a 5th year student at the Faculty of Sciences of NSU, collects electrochemical cell — battery prototypes — in an argon box. This special tool for operation without oxygen and moisture. To assemble the cell, Vlad put your hand inside a special, built-in box, thick gloves, which are part of boxing. A student places a cathode material on the bottom of the cell closes special separators to separate the cathode and the anode, the electrolyte fills and puts on a lithium foil — the anode. After several passes, skillful hands cell is ready. You can pull out.

Now it is time to mathematical calculations. Now everything is automated laboratory. Computing — computer work. Electrochemical cells are placed in a setting that shows how, in the process of their circulation. It is designed to work immediately with 16 cells.

  • Vlad Podugolnikov, a 5th year student at the Faculty of Sciences of NSU, collects electrochemical cell - battery prototypes - in an argon box.
  • Vlad Podugolnikov, a 5th year student at the Faculty of Sciences of NSU, collects electrochemical cell — battery prototypes — in an argon box.

These experiments are necessary to obtain a material which could be applied in the future to manufacture. Efforts aimed at creating environmentally friendly and low-cost method of production. Using ferric more accessible, compared to divalent reduced process costs. For Russia this kind of research are needed because by 2014 at the "Liotech" will completely replace the imported technologies and materials domestic.

In 2012, reach the planned capacity of the plant did not work out. In early April, it was reported that RUSNANO has redeemed all of its share of the Chinese partner and became the sole owner of the plant "Liotech." So now expected investment of $ 423 million to upgrade strategy, changes in product mix plant. And the implementation of development scientists.

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