Press Release

Nippon Chemi-Con Corporation

September 6, 2013

Nippon Chemi-Con to Increase Production of

Low- Resistance Electric Double Layer Capacitors

DLCAP™ for Passenger Vehicles

Nippon Chemi-Con Corporation will increase

production of low-resistance electric double layer

capacitors (EDLC), DLCAP™, developed for use in

vehicles such as capturing kinetic energy and storing as

electricity in regenerative braking energy systems.

First adopted by Mazda Motor Corporation

(Mazda) last year, low-resistance EDLC has been

adopted by another automaker this summer. Nippon

Chemi-Con expects sales of “DLCAP™” for this fiscal

year to be 4 billion yen, about a tenfold increase

compared to two years ago when the supply to automakers

was yet to start.

The EDLC for use in vehicles, developed with Nippon Chemi-Con’s unique

technology, features significantly reduced internal resistance. To lower internal resistance,

methyl cyanide (acetonitrile) is commonly used as a solvent for electrolyte; however,

acetonitrile is highly toxic and is designated as a poisonous substance under Japanese law. As

environmental regulations are expected to be further strengthened in most countries, Nippon

Chemi-Con uses the very safe “propylene carbonate”, not acetonitrile, with the view of

long-term use of EDLC. Through extensive structural design research, Nippon Chemi-Con

developed the EDLC, using the very safe propylene carbonate, which features less than half

of the internal resistance compared to the previous series.

Our newest product (EDLC) also has a broader operating temperature range, from

-40 to +70 degrees Celsius (from -25 to +60 degrees Celsius for the previous series), allowing

them to be ideally suited for use in automotive applications. Superior heat resistance allows

them to be placed within the engine compartment and improved low-temperature properties

allow them to deliver high performance in cold climates.

After being adopted by Mazda, Nippon Chemi-Con has extended the product line of

low-resistance EDLC for automotive use. The product line has become a standard series

which we named “DXE” and started being supplied to a new-model vehicle launched by

another automaker this September. This new-model vehicle features idling stop system which

improves fuel economy and a regenerative braking energy system in which EDLC has been

adopted to store electricity. When the vehicle decelerates, electricity generated by the

EDLC for use in vehicles

“DXE series”