An object of the present invention is to provide a carbonaceous material used for an electric double layer capacitor having a high electrostatic capacity and capable of maintaining the high electrostatic capacity and energy density over a long period and a method for producing the same. The present invention relates to a carbonaceous material having a specific surface area of 1,200 m.sup.2/g to 1,800 m.sup.2/g according to a BET method, an R-value of 1.2 or more and a G-band half-value width of 70 cm.sup.−1 or more according to a Raman spectrum.

An object of the present invention is to provide a carbonaceous material used for an electric double layer capacitor having a high electrostatic capacity and capable of maintaining the high electrostatic capacity and energy density over a long period and a method for producing the same. The present invention relates to a carbonaceous material having a specific surface area of 1,200 m.sup.2/g to 1,800 m.sup.2/g according to a BET method, an R-value of 1.2 or more and a G-band half-value width of 70 cm.sup.−1 or more according to a Raman spectrum.

Described are energy storage devices employing a gas storage structure, which can accommodate or store gas evolved from the energy storage device. The energy storage device comprises an electrochemical cell with electrodes comprising metal-containing compositions, like metal oxides, metal nitrides, or metal hydrides, and a solid state electrolyte.

An energy storage apparatus includes a plurality of energy storage devices each of which includes a case and an outer case that accommodates the plurality of energy storage devices. The outer case has a ventilation chamber and an opening. An exhaust port that guides gas discharged from the case of at least one energy storage device in the plurality of energy storage devices to an inside of the ventilation chamber and a valve member that closes the exhaust port are disposed in the ventilation chamber. The opening guides the gas discharged from the exhaust port from the inside of the ventilation chamber to an outside of the outer case. The opening is formed lower than the exhaust port in the vertical direction.

A non-aqueous electrolyte secondary battery including an electrode body having a positive electrode and a negative electrode, a non-aqueous electrolyte, and a battery case is provided. The battery case includes a case body having an opening and configured to house the electrode body and the non-aqueous electrolyte, and a lid configured to close the opening. The lid includes a plate-shaped lid body, a valve portion configured to open when the internal pressure of the battery case is higher than a valve opening pressure determined in advance, and a degassing portion configured to set to be an opening pressure higher than the valve opening pressure of the valve portion.

A battery includes a battery element, a housing body, and a valve device. The housing body is constituted by at least one laminate and includes an interior space in which the battery element is housed, a first housing portion that covers the interior space from a first side, and a second housing portion that covers the interior space from a second side. The valve device is attached to the housing body and can make interior space of housing body be in communication with an external space. A joined edge portion is formed in housing body as a result of the first and second housing portion being fused along respective peripheral edge portions. The valve device is sandwiched between the first and second housing portion in the joined edge portion, and an inner end of the valve device protrudes from an inner edge of joined edge portion toward the interior space.

An impurity processing device includes: a pipe through which a treated liquid containing metal impurities flows; a first electrode and a second electrode disposed in the pipe; and a power supply causing a current to flow between the first electrode and the second electrode.

An impurity processing device is a device for processing metal impurities contained in a solid-liquid mixture for forming an electrode of an electric storage device, and includes a first electrode and a second electrode that apply an electric field to the solid-liquid mixture, and a power supply that causes a current of 0.1 mA or more to flow between the first electrode and the second electrode.

Provided is a lithium battery, wherein the battery comprises an anode, a cathode, wherein the cathode comprises one or more transition metals, an electrolyte, and a porous separator interposed between the cathode and anode, wherein the separator comprises an anionic compound. Also provided are methods of manufacturing such batteries.

Provided is a lithium battery, wherein the battery comprises an anode, a cathode, wherein the cathode comprises one or more transition metals, an electrolyte, and a porous separator interposed between the cathode and anode, wherein the separator comprises an anionic compound. Also provided are methods of manufacturing such batteries.