Kanto Denka Kogyo Co., Ltd.

Hitachi Maxell, Limited

Kanto Denta Kogyo Co., Ltd.

Yuan Gao

Osamu Omae

Masafumi Kobayashi

Kumiko Sueto

Hideo Sakata

Fusaji Kita

Shizuo Tokito

Youji Inoue

Kumiko Ishizuka

Kazuki Muraishi

Akiko Kuwabara

Miyuki Kasahara

Kimitaka Ohkubo

An ionic liquid which contains an organic matter represented by the following general formula (1) as a cation component. The ionic liquid is stably in a liquid state over a wide temperature range and is excellent in electrochemical stability. The ionic liquid is advantageously used for applications such as electric power storage devices, lithium secondary batteries, electrical double layer capacitors, dye-sensitized solar cells, fuel cells, and reaction solvents. 

Ionic liquid containing phosphonium cation having P&#x2014;N bond and method for producing same

In the nonaqueous secondary battery of the present invention, a positive electrode mixture layer included in a positive electrode contains a lithium-containing complex oxide defined by the general formula LiMMMO(where, Mrepresents at least one transition metal element selected from the group consisting of Co, Ni and Mn, Mrepresents at least one metal element selected from the group consisting of Mg, Ti, Zr, Ge, Nb, Al and Sn, Mrepresents an element other than Li, Mand M, 0.97&#x2266;x&#x3c;1.02, 0.8&#x2266;y&#x3c;1.02, 0.002&#x2266;z&#x2266;0.05, and 0&#x2266;v&#x2266;0.05) and has a density of 3.5 g/cmor more. A nonaqueous electrolyte contains a fluorinated nitrile compound including two or more cyano groups or a cyano group and an ester group.

Nonaqueous secondary battery and electronic device

An organic thin-film transistor having a higher carrier-mobility, a method of fabricating the organic thin-film transistor and an organic thin-film device including the organic thin-film transistor are provided. In an organic thin-film transistor having an organic semiconductor layer, the organic semiconductor layer contains a fluorinated acene compound which is represented by a formula of CF, wherein n is an integer of 2 or greater. The fluorinated acene compound is preferably tetradecafluoropentacene or dodecafluoronaphthacene.

Organic thin-film transistor and fabrication method thereof and organic thin-film device

Ionic liquids exhibit a stable liquid state even at low temperatures and have a good conductivity. The ionic liquids each contain an organic compound represented by the following formula (1) as a cation. In the formula, Rto Rmay be the same as or different from each other and each represents an H, a halogen, or a Cto Calkyl group, cycloalkyl group, heterocyclic group, aryl group or alkoxyalkyl group; X and Y may be the same as or different from each other and each represents an N or a P; Z represents an S or an O.

Ionic liquids and process for manufacturing the same

Fluorinated pentacene derivatives, for example, the novel compounds tetradecafluoropentacene, 5,6,7,12,13,14-hexafluoropentacene, 5,7,12,14-tetrafluoropentacene, and 6,13-difluoropentacene, and intermediates therefor are provided. And a method of producing fluorinated pentacene derivatives and intermediates therefor is also provided. Pentacene derivatives fluorinated at desired positions of the pentacene skeleton are obtained by introducing the oxo group, hydroxyl group, or alkoxyl group into the pentacene skeleton followed by fluorination with sulfur tetrafluoride and partial defluorination using a reducing agent.

Fluorinated pentacene derivative and method of producing same

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Shibukawa, Japan

Yuan Gao