公开(公告)号：US20160090306A1

公开(公告)日：2016-03-31

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出二氟磷酸盐，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：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：US11180515B2

公开(公告)日：2021-11-23

申请号：US17010611

申请日：2020-09-02

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: A non-aqueous electrolytic solution includes 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. The phosphoric acid diester salt is represented by the following chemical formula (1): in which 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：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。