The invention has as its object the provision of a wound-type accumulator, by which arrangement of a lithium ion source is simplified, and the time required to inject an aprotic organic solvent electrolyte solution and the time required for predoping are s...

A nonaqueous solvent for an electrical storage device according to the present invention includes fluorine-containing cyclic saturated hydrocarbon having a structure represented by the following general formula (1) in which one or two substituents R are in...

Discharge at a high current density has been difficult because of problems that an electrolytic solution has low conductivity and absorption and desorption reaction of lithium ions are slow in the negative electrode. However, let a (mAh) be a cell capacity...

There is provided an organic electrolyte capacitor having electrodes on current collectors that have holes penetrating the front and rear surfaces, in which electrode materials formed on the through-holes of the current collectors seldom fall off and high ...

It is an object of the present invention to provide a material for electrolytic solutions suited for use as material in electrolytic solutions serving as ionic conductors in electrochemical devices, such as large-capacity cells or batteries. The present in...

A secondary power source comprising a positive electrode made mainly of activated carbon, a negative electrode made mainly of a carbon material capable of doping and undoping lithium ions and an organic electrolyte containing a solute of a lithium salt, wh...

A secondary power source, which comprises a positive electrode containing activated carbon, a negative electrode containing a carbon material capable of doping and undoping lithium ions, and an organic electrolyte containing a lithium salt, wherein the neg...

A secondary power source, which comprises a positive electrode containing activated carbon, a negative electrode containing (a) Li4Ti5O12 or (b) Li4Ti5O12, and a carbon material capable of doping or undoping lithium ions, and an organic electrolyte contain...

Orthosilicates containing the SiO4- tetranion as the building block are used as redox materials by incorporation of at least one transition elements with at least two valency levels. Lithium ingresses or egresses from the structure to compensate for the va...