Since the material has been adopted for use in several models of EVs to be sold in Japan and overseas, Showa Denko has decided to increase its SCMG production capacity at Omachi, Nagano Prefecture, from 1,000 tons a year at present to 3,000 tons a year in 2012. Showa Denko is planning to generate JPY8 billion in sales of carbon materials for lithium-ion batteries, including this product, in 2012.

Characteristics of SCMG

The improvement in load current characteristic enables the use of heavy current while the improvement in cycle life ensures long-term use of batteries. So, SCMG has been adopted for use in various models of EVs that will be launched this year on the world market.

Market for lithium-ion batteries in EVs

Now, the automakers are working with high effort to develop eco-friendly cars in view of the environmental problems, such as global warming, and the depletion of oil and natural gas resources. Hybrid cars, in which both electric motors and engines are installed, have already reached the stage of commercial production. Furthermore, plug-in hybrid cars and EVs, driven solely by electric motors, are now reaching the commercial production stage.

These eco-friendly cars require high-performance batteries that can store a large amount of electric power in a relatively small space. Producers of automobiles and electric appliances are developing lithium-ion batteries to meet such demand. As part of that development effort, SCMG has been evaluated for automotive applications.

Capacity expansion

Showa Denko has already started expanding its SCMG production capacity at Omachi, modifying the special graphitizing furnace and adding new powder processing units for completion by the end of this year. Showa Denko will establish a competitive production setup through efficient capital investment, fully utilizing its existing facilities at Omachi for the production of graphite electrodes.

While carefully watching the trends in demand for lithium-ion batteries for cars and determining the synergy, Showa Denko will make further investments in graphite-anode-material production facilities, centering on the special graphitizing furnace. The total investment in the 2009-2012 period is expected to reach approximately JPY2 billion.

Showa Denko’s lithium-ion-battery-related carbon business

Besides SCMG, Showa Denko has been producing and selling VGCF carbon nanotubes since 1996. When added in the electrodes of lithium-ion batteries, VGCF provides better electric conductivity. Demand for VGCF has been increasing due to the rise in the production volume of lithium-ion batteries. The demand increase is also due to the recent trends that VGCF, which was at first added in anodes only, is now added in cathodes as well. Thus, in 2007, Showa Denko expanded its VGCF production capacity from 40 tons a year to 100 tons a year.

Showa Denko has succeeded in the development of SCMG on the strength of its lithium-ion battery evaluation technology developed jointly with customers through R&D of VGCF. Also, Showa Denko’s proprietary high-temperature graphitizing technology, accumulated over many years in the graphite electrode business, has contributed to the success. We will provide high-quality products based on an efficient production setup, seeking synergies with the graphite electrode production capabilities at Omachi.

Under the Passion Extension for 2009 and 2010, Showa Denko is strengthening its R&D efforts in the area of environmental protection and energy conservation to meet increasing social needs. In particular, we will step up R&D pertaining to metal and inorganics, including graphite, in which we have competitive strengths due to the accumulation of technologies.

Showa Denko is a Japan-based manufacturer of compound semiconductors and other products.