公开(公告)号：US10269465B2

公开(公告)日：2019-04-23

申请号：US15026329

申请日：2014-09-17

Applicant: National Institute of Advanced Industrial Science and Technology

Inventor： Atsushi Sakuda ,  Tomonari Takeuchi ,  Noboru Taguchi ,  Hikari Sakaebe ,  Kuniaki Tatsumi

IPC: H01B1/10 ,  C01G23/00 ,  C01G33/00 ,  H01M4/136 ,  H01M4/58 ,  H01M10/0525 ,  H01M10/052 ,  H01M4/02

Abstract: The sulfide of the present invention comprises an amorphous (lithium) niobium sulfide having an average composition represented by formula (1): Lik1NbSn1 (wherein 0≤k1≤5; 3≤n1≤10; and when n1≥3.5, k1≤0.5), or an amorphous (lithium) titanium niobium sulfide having an average composition represented by formula (2): Lik2Ti1-m2Nbm2Sn2 (wherein 0≤k2≤5; 0

公开(公告)号：US20160285097A1

公开(公告)日：2016-09-29

申请号：US14777932

申请日：2014-03-17

Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY

Inventor： Atsushi Sakuda ,  Tomonari Takeuchi ,  Hikari Sakaebe ,  Kuniaki Tatsumi

IPC: H01M4/58 ,  H01M10/0525

CPC classification number: H01M4/5815 ,  C01G23/002 ,  C01G33/006 ,  C01P2002/72 ,  C01P2004/61 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0569 ,  H01M2004/028 ,  Y02T10/7011

Abstract: The present invention provides a novel lithium titanium sulfide, lithium niobium sulfide, or lithium titanium niobium sulfide that contains a sulfide containing lithium, titanium and/or niobium, and sulfur as constituent elements, and that has excellent charge-discharge performance (especially excellent charge-discharge capacity and charge-discharge potential) useful as a cathode active material or the like for lithium batteries, such as metal lithium secondary batteries or lithium-ion secondary batteries. Particularly preferred are, for example, (1) lithium titanium sulfide containing lithium, titanium, and sulfur as constituent elements and having a cubic rock salt crystal structure, (2) lithium niobium sulfide containing lithium, niobium, and sulfur as constituent elements and having a diffraction peak at a specific position in an X-ray diffractogram, and (3) lithium titanium niobium sulfide containing lithium, titanium, niobium, and sulfur as constituent elements and having a diffraction peak at a specific position in an X-ray diffractogram.

Abstract translation: 本发明提供一种新型的锂硫化锂，硫化铌硫化物或锂钛铌硫化物，其含有含有锂，钛和/或铌的硫化物和硫作为构成元素，并且具有优异的充放电性能（特别优异的电荷 - 放电容量和充放电电位）作为锂电池的正极活性物质等，例如金属锂二次电池或锂离子二次电池。 特别优选的是（1）含有锂，钛和硫作为构成元素并具有立方岩盐晶体结构的锂硫化钛，（2）含有锂，铌和硫的锂铌硫作为构成元素，并具有 在X射线衍射图中的特定位置处的衍射峰，以及（3）作为构成元素的锂，钛，铌和硫的锂钛铌硫化物，并且在X射线衍射图中的特定位置具有衍射峰。

公开(公告)号：US10862120B2

公开(公告)日：2020-12-08

申请号：US15780472

申请日：2016-12-07

Applicant: National Institute of Advanced Industrial Science and Technology

Inventor： Titus Nyamwaro Masese ,  Masahiro Shikano ,  Hikari Sakaebe ,  Hiroshi Senoh ,  Hikaru Sano

IPC: H01B1/08 ,  H01M4/00 ,  H01M4/525 ,  H01M4/131 ,  H01M4/505 ,  H01M10/054 ,  C01G49/00 ,  H01M4/485 ,  C01G3/00 ,  C01G45/12 ,  H01M4/62 ,  H01M4/02

Abstract: By using a potassium ion secondary battery positive electrode active material comprising a potassium compound represented by general formula (1): KnMOm, wherein M is copper or iron, n is 0.5 to 3.5, and m is 1.5 to 2.5, provided is a potassium ion secondary battery positive electrode active material having higher theoretical discharge capacity and higher effective capacity than a potassium secondary battery using Prussian blue as a positive electrode active material.

公开(公告)号：US10290870B2

公开(公告)日：2019-05-14

申请号：US15021041

申请日：2014-09-10

Applicant: National Institute of Advanced Industrial Science and Technology

Inventor： Tomonari Takeuchi ,  Atsushi Sakuda ,  Hiroyuki Kageyama ,  Hikari Sakaebe ,  Kuniaki Tatsumi

IPC: H01M4/58 ,  H01M4/38 ,  H01M10/0525 ,  H01M10/0562 ,  H01M4/1397 ,  H01M4/36 ,  H01M4/04 ,  H01M4/136 ,  H01M10/058 ,  H01M10/44 ,  C01B17/22 ,  C01G49/00 ,  H01M4/02

Abstract: The main object is to provide a novel material with excellent charge and discharge characteristics, such as a high utilization rate of a positive electrode, a high capacity, and good cycle characteristic, in which the material is a compound containing as the major component lithium sulfide useful as a cathode active material for lithium secondary batteries. The invention provides a lithium sulfide-iron-carbon composite containing lithium, iron, sulfur and carbon as constituent elements, with lithium sulfide (Li2S), as the main phase, having a crystallite size of 50 nm or less as calculated from the half width of the diffraction peak based on the (111) plane of Li2S as determined by X-ray powder diffraction.

公开(公告)号：US20190067692A1

公开(公告)日：2019-02-28

申请号：US15780472

申请日：2016-12-07

Applicant: National Institute of Advanced Industrial Science and Technology

Inventor： Titus Nyamwaro Masese ,  Masahiro Shikano ,  Hikari Sakaebe ,  Hiroshi Senoh ,  Hikaru Sano

IPC: H01M4/525 ,  C01G3/00 ,  C01G49/00 ,  C01G45/12 ,  H01M4/505 ,  H01M4/131 ,  H01M4/62 ,  H01M10/054

Abstract: By using a potassium ion secondary battery positive electrode active material comprising a potassium compound represented by general formula (1): KnMm, wherein M is copper or iron, n is 0.5 to 3.5, and m is 1.5 to 2.5, provided is a potassium ion secondary battery positive electrode active material having higher theoretical discharge capacity and higher effective capacity than a potassium secondary battery using Prussian blue as a positive electrode active material.

公开(公告)号：US10090524B2

公开(公告)日：2018-10-02

申请号：US14777932

申请日：2014-03-17

Applicant: National Institute of Advanced Industrial Science and Technology

Inventor： Atsushi Sakuda ,  Tomonari Takeuchi ,  Hikari Sakaebe ,  Kuniaki Tatsumi

IPC: H01M4/58 ,  H01M10/0525 ,  C01G23/00 ,  C01G33/00 ,  H01M10/052 ,  H01M10/0569 ,  H01M4/02

Abstract: The present invention provides a novel lithium titanium sulfide, lithium niobium sulfide, or lithium titanium niobium sulfide that contains a sulfide containing lithium, titanium and/or niobium, and sulfur as constituent elements, and that has excellent charge-discharge performance (especially excellent charge-discharge capacity and charge-discharge potential) useful as a cathode active material or the like for lithium batteries, such as metal lithium secondary batteries or lithium-ion secondary batteries. Particularly preferred are, for example, (1) lithium titanium sulfide containing lithium, titanium, and sulfur as constituent elements and having a cubic rock salt crystal structure, (2) lithium niobium sulfide containing lithium, niobium, and sulfur as constituent elements and having a diffraction peak at a specific position in an X-ray diffractogram, and (3) lithium titanium niobium sulfide containing lithium, titanium, niobium, and sulfur as constituent elements and having a diffraction peak at a specific position in an X-ray diffractogram.

公开(公告)号：US20180006298A1

公开(公告)日：2018-01-04

申请号：US15527185

申请日：2015-11-18

Applicant: National Institute of Advanced Industrial Science and Technology

Inventor： Tomonari Takeuchi ,  Hiroyuki Kageyama ,  Atsushi Sakuda ,  Hikari Sakaebe

IPC: H01M4/36 ,  H01M4/583 ,  H01M4/38 ,  C01G49/12 ,  H01M4/136 ,  H01M4/134 ,  H01M10/0525 ,  H01M4/58

CPC classification number: H01M4/364 ,  C01B17/22 ,  C01G49/00 ,  C01G49/12 ,  H01M4/134 ,  H01M4/136 ,  H01M4/36 ,  H01M4/38 ,  H01M4/58 ,  H01M4/5815 ,  H01M4/583 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0562 ,  H01M10/0565 ,  Y02E60/122 ,  Y02P70/54 ,  Y02T10/7011

Abstract: A composite containing phosphorus, lithium, iron, sulfur, and carbon as constituent elements wherein lithium sulfide (Li2S) is present in an amount of 90 mol % or more, and wherein the crystallite size calculated from the half-width of a diffraction peak based on the (111) plane of Li2S as determined by X-ray powder diffraction measurement is 80 nm or less. The composite exhibits a high capacity (in particular, a high discharge capacity) useful as an electrode active material for a lithium-ion secondary battery (in particular, a cathode active material for a lithium-ion secondary battery), without the need for stepwise pre-cycling treatment.

公开(公告)号：US10811684B2

公开(公告)日：2020-10-20

申请号：US15781254

申请日：2016-12-07

Applicant: National Institute of Advanced Industrial Science and Technology

Inventor： Titus Nyamwaro Masese ,  Masahiro Shikano ,  Hikari Sakaebe ,  Hiroshi Senoh ,  Hikaru Sano

IPC: H01B1/08 ,  H01M4/00 ,  H01M4/58 ,  C01B33/32 ,  C01G49/00 ,  C01G53/00 ,  H01M4/485 ,  C01G45/12 ,  H01M4/62 ,  H01M4/136 ,  C01G51/00 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M10/054 ,  C01B33/20 ,  H01M4/02

Abstract: Provided is a material that can be used as a potassium secondary battery positive electrode active material (particularly a potassium ion secondary battery positive electrode active material), other than Prussian blue, by using a potassium compound and a potassium ion secondary battery positive electrode active material comprising the potassium compound, the potassium compound being represented by general formula (1): KnAkBOm, wherein A is a positive divalent element in groups 7 to 11 of the periodic table; B is positive tetravalent silicon, germanium, titanium or manganese, excluding a case in which A is manganese and B is titanium, and a case in which A is cobalt and B is silicon; n is 1.5 to 2.5; and m is 3.5 to 4.5.

公开(公告)号：US10367196B2

公开(公告)日：2019-07-30

申请号：US15527185

申请日：2015-11-18

Applicant: National Institute of Advanced Industrial Science and Technology

Inventor： Tomonari Takeuchi ,  Hiroyuki Kageyama ,  Atsushi Sakuda ,  Hikari Sakaebe

IPC: H01M4/36 ,  C01G49/00 ,  C01B17/22 ,  H01M4/58 ,  H01M10/052 ,  H01M10/0562 ,  H01M10/0565 ,  C01G49/12 ,  H01M4/134 ,  H01M4/136 ,  H01M4/38 ,  H01M4/583 ,  H01M10/0525

Abstract: A composite containing phosphorus, lithium, iron, sulfur, and carbon as constituent elements wherein lithium sulfide (Li2S) is present in an amount of 90 mol % or more, and wherein the crystallite size calculated from the half-width of a diffraction peak based on the (111) plane of Li2S as determined by X-ray powder diffraction measurement is 80 nm or less. The composite exhibits a high capacity (in particular, a high discharge capacity) useful as an electrode active material for a lithium-ion secondary battery (in particular, a cathode active material for a lithium-ion secondary battery), without the need for stepwise pre-cycling treatment.

公开(公告)号：US20190067696A1

公开(公告)日：2019-02-28

申请号：US15781254

申请日：2016-12-07

Applicant: National Institute of Advanced Industrial Science and Technology

Inventor： Titus Nyamwaro Masese ,  Masahiro Shikano ,  Hikari Sakaebe ,  Hiroshi Senoh ,  Hikaru Sano

IPC: H01M4/58 ,  C01B33/32 ,  C01G49/00 ,  C01G51/00 ,  C01G45/12 ,  C01G53/00 ,  H01M4/525 ,  H01M4/505 ,  H01M4/136 ,  H01M4/131 ,  H01M4/62 ,  H01M10/054

Abstract: Provided is a material that can be used as a potassium secondary battery positive electrode active material (particularly a potassium ion secondary battery positive electrode active material), other than Prussian blue, by using a potassium compound and a potassium ion secondary battery positive electrode active material comprising the potassium compound, the potassium compound being represented by general formula (1): KnAkBOm, wherein A is a positive divalent element in groups 7 to 11 of the periodic table; B is positive tetravalent silicon, germanium, titanium or manganese, excluding a case in which A is manganese and B is titanium, and a case in which A is cobalt and B is silicon; n is 1.5 to 2.5; and m is 3.5 to 4.5.