Central Glass Company, Limited

Keita Nakahara

Takayoshi Morinaka

Akifumi Yao

Mikihiro Takahashi

Susumu Iwasaki

Wataru Kawabata

Makoto Kubo

Natsuya Nishimura

Yosuke Nakamura

Tatsuo Miyazaki

Nobuyuki Tokunaga

Yuta Ikeda

Satoshi Muramoto

An additive for a non-aqueous electrolyte solution that can exhibit high-temperature cycle properties at 50&#xb0; C. or more and low-temperature output properties at &#x2212;20&#xb0; C. or less in a well-balanced manner for a non-aqueous electrolyte solution battery. The additive for a non-aqueous electrolyte solution is represented by formula [1], wherein Z, Z, Z, Z, Mand p are as defined in the specification.

Additive for non-aqueous electrolyte solution, non-aqueous electrolyte solution, and non-aqueous electrolyte solution battery

An additive for a non-aqueous electrolyte solution that can suppress the initial gas generation amount when used in a non-aqueous electrolyte solution battery. The additive for a non-aqueous electrolyte solution is represented by any one of formulae [1] to [4]: 

Additive for non-aqueous electrolyte solution, electrolyte solution for non-aqueous electrolyte solution battery, and non-aqueous electrolyte solution battery

To provide a manufacturing method with which lithium difluorophosphate powder can be recovered from a lithium difluorophosphate solution. A method for manufacturing lithium difluorophosphate powder is used which includes the steps of precipitating solid lithium difluorophosphate by adding a poor solvent to a solution in which lithium difluorophosphate is dissolved in a main solvent, and obtaining lithium difluorophosphate powder by solid-liquid separation of the solid lithium difluorophosphate from the liquid containing the main solvent and the poor solvent, wherein the relational expression between the octanol/water partition coefficient Pof the main solvent and the octanol/water partition coefficient Pof the poor solvent is defined by the following formula (1).&#x2265;&#x2212;4/3&#xd7;+1.2&#x2003;&#x2003;(1):

Manufacturing method for lithium difluorophosphate powder, and lithium difluorophosphate

A fluorine gas generating apparatus includes: a first main passage connected to a first gas chamber and supplying a fluorine gas to an external device; a first conveying device leading out and conveying the fluorine gas from the first gas chamber; a first pressure detector detecting the pressure on the upstream side of the first conveying device; a first pressure regulating valve returning the fluorine gas from the first conveying device to the suction side of the first conveying device; a controller controlling the opening degree of the first pressure regulating valve so that the pressure detected by the first pressure detector becomes a first set value; a start valve provided on the upstream side of the pressure detector; and a differential pressure detector for detecting the pressure difference before and after the start valve in the closed valve state.

Fluorine gas generating apparatus

A fluorine gas generating apparatus generating a fluorine gas by electrolyzing hydrogen fluoride in molten salt, includes: an electrolytic cell including, above a liquid level of molten salt, a first gas chamber into which a product gas mainly containing the fluorine gas generated at an anode immersed in the molten salt and a second gas chamber separated from the first gas chamber into which a byproduct gas mainly containing a hydrogen gas generated at a cathode immersed in the molten salt; a hydrogen fluoride supply source retaining hydrogen fluoride to be replenished in the electrolytic cell; a refining device trapping a hydrogen fluoride gas evaporated from the molten salt in the electrolytic cell and mixed in the product gas generated from the anode to refine the fluorine gas; and a recovery facility conveying and recovering the hydrogen fluoride trapped in the refining device in the electrolytic cell or the hydrogen fluoride supply source.

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Ube, Japan

Keita Nakahara