Toyo Tanso Co., Ltd.

Permelec Electrode Ltd.

Mitsui Chemicals, Inc.

Nippon Chemical Industrial Co., Ltd.

Asahi Kasei Chemicals Corporation

Hitoshi Takebayashi

Tetsuro Tojo

Jiro Hiraiwa

Masashi Kodama

Yoshinori Nishiki

Masaharu Uno

Tsuneto Furuta

Udai Tanaka

Masahiro Kikuchi

Shinji Saito

Takehiko Sawai

Hiroshi Hatayama

Yoshitomi Tada

Osamu Yoshimoto

Tateki Kurosu

Makoto Hongu

Katsuyuki Negishi

Akimasa Tasaka

Atsuhisa Mimoto

Miho Ohashi

It is a task of the present invention to provide an electrolytic apparatus for producing fluorine or nitrogen trifluoride by electrolyzing a hydrogen fluoride-containing molten salt, the electrolytic apparatus being advantageous in that the electrolysis can be performed without the occurrence of the anode effect even at a high current density and without the occurrence of an anodic dissolution. In the present invention, this task has been accomplished by an electrolytic apparatus for producing fluorine or nitrogen trifluoride by electrolyzing a hydrogen fluoride-containing molten salt at an applied current density of from 1 to 1,000 A/dm, the electrolytic apparatus using a conductive diamond-coated electrode as an anode.

Electrolytic apparatus for producing fluorine or nitrogen trifluoride

A high power lithium-ion secondary battery having an increased capacity and capable of maintaining high discharge voltage and repeating charging/discharging high current. A lithium-ion secondary battery having an electrode group formed by laminating or winding a negative electrode layer and a positive electrode layer so as to interpose a separator made of synthetic resin, the negative electrode layer containing a material capable of intercalating/deintercalating lithium-ion, and the positive electrode layer including a lithium-containing metallic oxide; and a non-aqueous electrolyte containing lithium salt, where the electrode group is immersed. The positive electrode material unit contains a fluorinated lithium-containing metallic oxide as a main material, and the separator possesses a hydrophilic group. Further, the positive electrode material preferably contains a main material including LiNiCoMnO, where 0.6&#x2266;x&#x3c;1, 0&#x3c;y&#x2266;0.2, 0&#x3c;z&#x2266;0.2, and x+y+z=1.

Lithium ion rechargeable battery

A fluorine gas generator for generating highly pure fluorine gas in a stable and safe manner by electrolyzing an electrolytic bathcomprising hydrogen fluoride in the form of a molten mixed gas is provided which comprises an electrolytic celldivided, by a partition wallinto an anode chamberin which an anode is disposed and a cathode chamberin which a cathode is disposed, pressure maintenance means for maintaining the anode chamberand cathode chamberat atmospheric pressure, and liquid level sensing meanscapable of sensing the levels of the electrolytic bathin the anode chamberand in the cathode chamberrespectively, at three or more level stages.

Fluorine gas generator

A carbon electrode for producing gaseous nitrogen trifluoride comprising a dense texture with an average pore size of 0.5 &#x3bc;m or less is provided. The carbon electrode contains a carbonaceous material, and 3 to 10 wt % of at least one selected from magnesium fluoride and aluminum fluoride which have a melting point not lower than the baking temperature of the carbonaceous material.

Carbon electrode for generation of nitrogen trifluoride gas

The present invention provides an electrolytic anode for use in electrolytically synthesizing a fluorine-containing substance by using an electrolytic bath containing a fluoride ion including: an electroconductive substrate having a sure including an electroconductive carbonaceous material; and an electroconductive carbonaceous film having a diamond structure, the electroconductive carbonaceous film coating a part of the electroconductive carbonaceous substrate, and a method for electrolytically synthesizing a fluorine-containing substance using the electrolytic anode.

Electrolytic anode and method for electrolytically synthesizing fluorine containing substance using the electrolytic anode

A conductive diamond electrode including a conductive substrate comprising a carbonaceous material, a conductive diamond catalyst layer formed on a surface of the conductive substrate, and a carbon fluoride formed on an exposed portion present on the surface of the conductive substrate. The formed carbon fluoride prevents the conductive substrate from contacting with an electrolytic solution, thereby suppressing corrosion of the substrate. A long life of the electrode can be attained.

Conductive diamond electrode and process for producing the same

A fluorine gas generating apparatus for generating fluorine gas of high purity by electrolysis of a mixed molten-salt comprising hydrogen fluoride, the fluorine gas generating apparatus comprising an electrolytic cell which is separated into an anode chamber and a cathode chamber by a partition wall , and pressure keeping means for supplying gas to the anode chamber and the cathode chamber , respectively, to keep an interior of the anode chamber and an interior of the cathode chamber at a certain pressure.

Apparatus for generating fluorine gas

Growing community of inventors

Osaka, Japan

Hitoshi Takebayashi