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KIER 에너지기술로 미래의 행복사회를 열어갑니다.


Development of new material technology to increase ‘mileage of electric cars’ 2018-04-04 17:58:45.0 158

- Low-cost and high efficiency, high purity SiOx nanopowder for Lithium Ion Batteries developed
- In line with the Fourth Industrial Revolution, expectations for paradigm shift of medium and large sized lithium ion battery market rise

□ With the approaching of the Fourth Industrial Revolution, the lithium ion battery industry comes into the spotlight as it can provide an energy storage technology for electric vehicles and electric devices. Korean scientists introduce the home-grown technology that lowers batteries’ manufacturing costs and increases efficiency through maximizing energy capacity by utilizing new material.

○ The global lithium rechargeable batteries market grew at an annual rate of 17.24 percent from about $ 11.5 billion in 2010 to $ 18.54 billion in 2013. The market became larger by 18.49 percent annually after 2013 and the volume is expected to surpass $ 43.3 billion in 2018.

○ Lithium ion batteries have been used in electric cars and it costs almost half of the cars. Many people, however, said that electric car battery’s slow charging time and inefficient mileage, which fall behind cars with an internal combustion engine, should be improved. To tackle the situation, developing advanced electrode materials that can lower manufacturing costs and increase energy capacity is an urgent matter.

■ A research team led by Dr. Jang bo-yun, principal researcher of Korea Institute of Energy Research (KIER, president, Dr. Gwak Byong-sung) successfully developed the technology and knowhow of SiOx nanopowder, which is lithium ion battery negative electrode material based on nanotechnology, and made a contract with a Korean small and medium sized company for technology transfer at the end of 2017.

○ SiOx nanopowder developed by KIER includes Si that is highly reactive with lithium. When such nanopowder is tapped into lithium ion batteries, it is projected to generate more than four times of energy t
han graphite anode material currently using.

○ Since Si is easily oxidized in normal pressure, generally it is synthesized in a vacuum and cost is comparatively expensive. The new technology developed by KIER, however, can make synthesis reaction area as a condition of vacuum so that scientists can synthesized Si in normal pressure.

○ Also, the technology use cheap SI raw material that cost only $ 2 to $ 3 during the procedure of manufacturing, and decrease the manufacturing cost by 30 to 50 percent compare to the Japanese products, which is the only commercialized product in the field yet, through tapping into the induction melting devices used in metal engineering.

○ The other advantage is that SiOx nanopowder enables the gas from reaction not only to be recycled but also provide continuously to the car. And it makes the car drive over 100 hours.
※ Current driving hour: 8 to 10 hours

□ KIER and the company that was given the technology will work together to produce and sell relative products, and as of January 2019, they are expected to provide their products to the global battery manufacturers and lithium ion batteries producers including Tesla.

□ Dr. Jang Bo-yun, the head of the Separation and Conversion Materials Laboratory, KIER, said that high quality Silicon Dioxide equipped electric car batteries can be cheaper than current one. He added that Silicon Dioxide equipped batteries can drive more than 500 kilometers once it fully charged and it can be a pivotal part for electric cars to replace traditional car with an internal combustion engine.

○ KIER will strive to develop a trial product of negative electrode material optimized for Energy Storage System and conduct field survey so that it can carry out research in commercializing SiOx nanopowder.

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