公开(公告)号：US20160075557A1

公开(公告)日：2016-03-17

申请号：US14419181

申请日：2014-06-06

Applicant: STELLA CHEMIFA CORPORATION

Inventor： Naoki Yahata ,  Tetsuo Nishida

IPC: C01B25/455

CPC classification number: C01B25/455 ,  B01J31/0288 ,  C01P2006/80 ,  H01M10/0525 ,  H01M10/0567 ,  H01M2300/0025

Abstract: Provided is a method for purifying a difluorophosphate, in which a difluorophosphate is purified to a high purity. The method includes a method for purifying a difluorophosphate, comprising bringing hydrogen fluoride into contact with a difluorophosphate containing an impurity and subsequently heating and drying the difluorophosphate, or bringing the hydrogen fluoride into contact with the difluorophosphate containing the impurity while heating and drying the difluorophosphate containing the impurity, thereby removing the impurity.

Abstract translation: 提供了一种纯化二氟磷酸盐以纯化至高纯度的二氟磷酸盐的方法。 该方法包括一种纯化二氟磷酸盐的方法，包括使氟化氢与含有杂质的二氟磷酸盐接触，随后加热和干燥二氟磷酸盐，或使氟化氢与含有杂质的二氟磷酸盐接触，同时加热和干燥含二氟磷酸盐 杂质，从而除去杂质。

公开(公告)号：US12191448B2

公开(公告)日：2025-01-07

申请号：US16065721

申请日：2016-12-22

Applicant: STELLA CHEMIFA CORPORATION

Inventor： Toshitaka Sakaguchi ,  Yoshifumi Katsura ,  Sojiro Kon ,  Masashi Yamamoto ,  Tetsuo Nishida

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/0568

Abstract: Provided are a nonaqueous electrolytic solution for a secondary battery that exhibits excellent cycle characteristics even in high temperature environment, and a secondary battery including the same. The nonaqueous electrolytic solution for a secondary battery of the present invention is a nonaqueous electrolyte solution for a secondary battery which is used for a secondary battery, including at least one component (A) represented by the following chemical formula (1): in which Mn+ represents at least one selected from the group consisting of a hydrogen ion, an alkali metal ion, an alkaline earth metal ion, an aluminum ion, a transition metal ion and an onium ion, X represents a halogen atom, R1 represents a hydrocarbon group having 1 to 20 carbon atoms, or a hydrocarbon group having 1 to 20 carbon atoms and having at least any one of a halogen atom, a heteroatom or an unsaturated bond, and n represents a valence.

公开(公告)号：US11469424B2

公开(公告)日：2022-10-11

申请号：US17043753

申请日：2019-04-15

Applicant: STELLA CHEMIFA CORPORATION

Inventor： Sojiro Kon ,  Natsuki Mine ,  Yoshinori Sato ,  Masashi Yamamoto ,  Tetsuo Nishida

IPC: H01M4/92 ,  H01M4/96 ,  H01M8/1004

Abstract: A fuel cell catalyst which has high power output characteristics and suppresses degradation of power generation performance due to starting, stopping or load variation; a manufacturing method thereof; a membrane electrode assembly for fuel cell; and a fuel cell including the same. The fuel cell catalyst includes at least catalytically active species and a carrier supporting the catalytically active species. The catalytically active species are at least one selected from the group consisting of platinum, a platinum alloy, and a core-shell catalyst in which a core of a metal different from platinum is coated with a shell containing platinum, the carrier is a carbon material, and at least one of the catalytically active species and the carrier contain(s) fluorine atoms.

公开(公告)号：US10938066B2

公开(公告)日：2021-03-02

申请号：US15118827

申请日：2015-02-16

Applicant: STELLA CHEMIFA CORPORATION

Inventor： Toshitaka Sakaguchi ,  Yoshifumi Katsura ,  Tetsuo Nishida

IPC: H01M10/0567 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/054

Abstract: A phosphodiester salt is added to the electrolytic solution to form a nonaqueous electrolytic solution for a secondary battery. The nonaqueous electrolytic solution has excellent storage characteristics in a temperature load environment. Deterioration of the charge-discharge characteristics of the nonaqueous electrolytic solution and increase in internal resistance of the nonaqueous electrolytic solution are suppressed during storage. A secondary battery having a positive electrode and a negative electrode makes use of this electrolytic solution.

公开(公告)号：US20250011576A1

公开(公告)日：2025-01-09

申请号：US18709948

申请日：2022-11-09

Applicant: Kyoto University ,  STELLA CHEMIFA CORPORATION

Inventor： Hiroki Tanaka ,  Yoshinori Sato ,  Masashi Yamamoto ,  Keiichi Nii ,  Tetsuo Nishida

IPC: C08K5/55 ,  C08J3/205 ,  G21F1/10

Abstract: Provided is a neutron shielding material having good light transparency and excellent shielding performance against thermal neutron rays, and a method for producing the same. A neutron shielding material according to the present invention includes a light transmitting material and a boron compound enriched in a boron isotope having a mass number of 10, the neutron shielding material being formed of a molded product having light transparency. Shielding performance against thermal neutron rays is improved by containing a boron compound enriched in a boron isotope having a mass number of 10. As a result, the neutron shielding material can be widely applied to members requiring visibility and neutron blocking properties.

公开(公告)号：US11005125B2

公开(公告)日：2021-05-11

申请号：US15548639

申请日：2016-01-21

Applicant: STELLA CHEMIFA CORPORATION

Inventor： Toshitaka Sakaguchi ,  Sojiro Kon ,  Yoshifumi Katsura ,  Tetsuo Nishida

IPC: H01M10/0567 ,  H01M10/052 ,  C07F9/09 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/42

Abstract: A nonaqueous electrolytic solution for a secondary battery exhibits excellent cycle characteristics even in high-temperature environments. The solution includes at least one of boric acid esters, acid anhydrides, cyclic carbonates having an unsaturated bond, cyclic carbonates having a halogen atom, cyclic sulfonic acid esters, and amines having an acetoacetyl group. A secondary battery having a positive electrode and a negative electrode makes use of this electrolytic solution.

公开(公告)号：US10793585B2

公开(公告)日：2020-10-06

申请号：US15751841

申请日：2016-08-09

Applicant: STELLA CHEMIFA CORPORATION

Inventor： Toshitaka Sakaguchi ,  Sojiro Kon ,  Yoshifumi Katsura ,  Masashi Yamamoto ,  Tetsuo Nishida

IPC: C07F9/11 ,  H01M10/054 ,  H01M10/0567 ,  C07F9/09 ,  H01M10/052 ,  H01G11/64 ,  H01M10/0568 ,  C07F9/12 ,  C07H15/252 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/0569

Abstract: Disclosed is a phosphoric acid diester salt which can suppress deterioration of charge-discharge characteristics of a power storage element, and can suppress the rise in internal resistance after storage at high temperature, a production method therefor, a non-aqueous electrolytic solution for a power storage element, and a power storage element. Disclosed is a phosphoric acid diester salt represented by the following chemical formula (1): wherein Mn+ represents a hydrogen ion, an alkali metal ion, an alkali earth metal ion, an aluminum ion, a transition metal ion, or an onium ion; R1 and R2 are different from each other and represent a hydrocarbon group having 1 to 10 carbon atoms, or a hydrocarbon group having 1 to 10 carbon atoms and having at least one of a halogen atom, a heteroatom, and an unsaturated bond; and n represents a valence.

公开(公告)号：US09567217B2

公开(公告)日：2017-02-14

申请号：US14419071

申请日：2014-06-06

Applicant: STELLA CHEMIFA CORPORATION

Inventor： Sojiro Kon ,  Tetsuo Nishida

IPC: C01B25/455

CPC classification number: C01B25/455

Abstract: Provided is a method for producing a difluorophosphate, which can simply and easily produce a high-purity difluorophosphate in an industrially advantageous manner. The method includes steps of: reacting an aqueous hydrofluoric acid solution with an oxyhalide of phosphorous (except phosphoric trifluoride) to produce a crude difluorophosphoric acid; reacting the crude difluorophosphoric acid with a halide of an alkali metal, an alkaline earth metal, aluminum or an onium to produce a difluorophosphate in the crude difluorophosphoric acid; and heating and drying the crude difluorophosphoric acid containing the difluorophosphate to distill away the crude difluorophosphoric acid, or precipitating the difluorophosphate in the crude difluorophosphoric acid by crystallization, subsequently separating the difluorophosphate by solid-liquid separation, and further distilling away the crude difluorophosphoric acid contained in the difluorophosphate after solid-liquid separation.

Abstract translation: 本发明提供可以简单且容易地以工业上有利的方式制备高纯度二氟磷酸盐的二氟磷酸盐的制造方法。 该方法包括以下步骤：使氢氟酸水溶液与磷的卤氧化物（除了三氟化磷）反应以产生粗二氟磷酸; 使粗二氟磷酸与碱金属，碱土金属，铝或鎓的卤化物反应，在粗二氟磷酸中产生二氟磷酸盐; 并加热干燥含有二氟磷酸的粗二氟磷酸，蒸出粗二氟磷酸，或通过结晶沉淀粗二氟磷酸中的二氟磷酸盐，随后通过固 - 液分离分离二氟磷酸盐，进一步蒸馏除去含二氟磷酸的粗二氟磷酸 在固液分离后的二氟磷酸盐中。

公开(公告)号：US20160075556A1

公开(公告)日：2016-03-17

申请号：US14418720

申请日：2014-06-06

Applicant: STELLA CHEMIFA CORPORATION

Inventor： Naoki Yahata ,  Tetsuo Nishida ,  Shuichi Minamigawa

IPC: C01B25/455

CPC classification number: C01B25/455 ,  H01G11/62 ,  H01M10/052 ,  H01M10/0568

Abstract: Provided is a method for producing a difluorophosphate, which can easily and industrially advantageously produce a high-purity difluorophosphate. The method includes a step of producing a difluorophosphate in the fluorophosphoric acid solution by reacting hydrofluoric acid anhydride containing no solvent with an oxoacid and/or the like of phosphorous to produce a fluorophosphoric acid solution; a step of adding a hexafluorophosphate to the fluorophosphoric acid solution in the absence of respective halides, carbonates, borates, phosphates, hydroxides, and oxides of an alkali metal and the like; and a step of heating and drying the fluorophosphoric acid solution containing the difluorophosphate to distill away a fluorophosphoric acid, or a step of depositing the difluorophosphate in the fluorophosphoric acid solution by crystallization, subsequently separating the difluorophosphate by solid-liquid separation, and distilling away a fluorophosphoric acid contained in the difluorophosphate after the solid-liquid separation.

Abstract translation: 本发明提供一种二氟磷酸盐的制造方法，其可以容易且工业上有利地生产高纯度二氟磷酸盐。 该方法包括通过使不含溶剂的氢氟酸与含磷酸和/或类似物质的磷反应来制备氟磷酸溶液中的二氟磷酸盐以产生氟磷酸溶液的步骤; 在不存在各种卤化物，碳酸盐，硼酸盐，磷酸盐，氢氧化物和碱金属的氧化物等的情况下，向氟磷酸溶液中加入六氟磷酸盐的步骤; 以及将含有二氟磷酸盐的氟磷酸溶液加热干燥以蒸馏出氟磷酸的步骤，或通过结晶在氟磷酸溶液中沉积二氟磷酸盐的步骤，随后通过固液分离分离二氟磷酸盐，并蒸馏除去 在固液分离后二氟磷酸盐中含有的氟磷酸。

公开(公告)号：US20240376379A1

公开(公告)日：2024-11-14

申请号：US18691203

申请日：2022-08-10

Applicant: STELLA CHEMIFA CORPORATION

Inventor： Kenta Horigami ,  Hiroaki Takatori ,  Shinya Kumazawa ,  Kazutaka Hirano ,  Tetsuya Arakawa ,  Tetsuo Nishida ,  Yusuke Kitahara

IPC: C09K11/61 ,  C09K11/02

Abstract: A red phosphor excellent in optical characteristics and durability in a high-temperature and high-humidity environment and a method for producing the same are provided. The red phosphor according to the present invention includes: a Mn-activated composite fluoride represented by a general formula (1); and a perovskite compound represented by a general formula (2): L2MF6:Mn4+ (1) where L represents at least one alkali metal element selected from a group consisting of sodium, potassium, etc., and M represents at least one tetravalent element selected from a group consisting of silicon, germanium, etc.; and ABX3 (2) where A represents at least one selected from a group consisting of sodium, potassium, etc., B represents at least one element selected from a group consisting of magnesium, calcium, etc., and X represents at least one element selected from a group consisting of fluorine, chlorine, bromine, iodine, and sulfur.