The present invention relates to a porous carbon material having a co-continuous structure forming portion in which carbon skeletons and voids form continuous structures, respectively and which has a structural period of 0.002 m to 3 m, having pores which have an average diameter of 0.01 to 10 nm on a surface thereof, and having a BET specific surface area of 100 m.sup.2/g or more.

The present application is generally directed to energy storage materials such as activated carbon comprising enhanced particle packing properties and devices containing the same. The energy storage materials find utility in any number of devices, for example, in electric double layer capacitance devices and batteries. Methods for making the energy storage materials are also disclosed.

The present invention provides a highly conductive, highly voltage-resistant, and stable liquid electrolyte solution for capacitors which does not coagulate and is free from precipitation of salts in a wide temperature range, particularly at low temperatures, shows excellent electrical characteristics, and has excellent long-term reliability. The present invention also provides an electric double-layer capacitor and a lithium ion capacitor produced using the electrolyte solution for capacitors. The present invention relates to an electrolyte solution for capacitors including: an organic solvent; and a quaternary ammonium salt or lithium salt dissolved in the organic solvent, the organic solvent containing acetonitrile and a chain alkyl sulfonic compound represented by the formula (1): ##STR00001##
wherein R.sup.1 and R.sup.2, which may be the same as or different from each other, each independently represent a straight or branched chain C1-C4 alkyl group.

The present invention provides a highly conductive, highly voltage-resistant, and stable liquid electrolyte solution for capacitors which does not coagulate and is free from precipitation of salts in a wide temperature range, particularly at low temperatures, shows excellent electrical characteristics, and has excellent long-term reliability. The present invention also provides an electric double-layer capacitor and a lithium ion capacitor produced using the electrolyte solution for capacitors. The present invention relates to an electrolyte solution for capacitors including: an organic solvent; and a quaternary ammonium salt or lithium salt dissolved in the organic solvent, the organic solvent containing acetonitrile and a chain alkyl sulfonic compound represented by the formula (1): ##STR00001##
wherein R.sup.1 and R.sup.2, which may be the same as or different from each other, each independently represent a straight or branched chain C1-C4 alkyl group.

An emergency lighting system (ELS) for an aircraft has a capacitor, at least one of an onboard power system and a ground power unit configured to charge the capacitor, and a light emitting diode (LED) selectively powered by the capacitor.

An emergency lighting system (ELS) for an aircraft has a capacitor, at least one of an onboard power system and a ground power unit configured to charge the capacitor, and a light emitting diode (LED) selectively powered by the capacitor.

An electricity storage device includes an electricity storage element formed by winding an electrode body of an anode or cathode side along with a separator, an electrode leading section having an inclined edge is formed on an element end-face of the electricity storage element by a part of the electrode body.

The present invention relates generally to substrates for making polymers and methods for making polymers. The present invention also relates generally to polymers and devices comprising the same.

Disclosed is a polarizable electrode material for an electric double layer capacitor with a high energy density and excellent long-term reliability, as well as an electric double layer capacitor in which the polarizable electrode material is used. The polarizable electrode material includes porous carbon particles, a conductive assistant, a tungsten oxide powder and a binder, wherein the tungsten oxide is dispersed in the polarizable electrode material so that the tungsten oxide per 1 g of the polarizable electrode material has a surface area of 0.2 m.sup.2 or more and less than 6 m.sup.2.

An electrochemical capacitor includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and an electrolytic solution. The electrolytic solution contains a lactone compound. A capacity of the positive electrode is greater than a capacity of the negative electrode and is less than or equal to 1.6 times of the capacity of the negative electrode.