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：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：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：US20160308210A1

公开(公告)日：2016-10-20

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: H01M4/58 ,  H01M4/136 ,  H01M10/0525 ,  C01G33/00

CPC classification number: H01B1/10 ,  C01G23/002 ,  C01G23/007 ,  C01G33/00 ,  C01G33/006 ,  C01P2002/02 ,  C01P2002/60 ,  C01P2002/72 ,  C01P2002/88 ,  C01P2004/04 ,  C01P2006/40 ,  C01P2006/80 ,  H01M4/136 ,  H01M4/5815 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/028

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

Abstract translation: 本发明的硫化物包含具有式（1）所示平均组成的无定形（锂）铌硫化物：Lik1NbSn1（其中0≤k1≤5;3≤n1≤10;当n1≥3.5时，k1≤0.5） ，或具有式（2）表示的平均组成的无定形（锂）铌硫化铌：Lik2Ti1-m2Nbm2Sn2（其中0≤k2≤5; 0

公开(公告)号：US20160268606A1

公开(公告)日：2016-09-15

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 ,  H01M10/0525 ,  H01M10/0562 ,  H01M4/1397 ,  H01M10/44 ,  H01M4/04 ,  H01M4/136 ,  H01M4/38 ,  H01M10/058

CPC classification number: H01M4/5815 ,  C01B17/22 ,  C01G49/009 ,  C01P2002/72 ,  C01P2004/61 ,  C01P2006/40 ,  H01M4/0433 ,  H01M4/0445 ,  H01M4/136 ,  H01M4/1397 ,  H01M4/364 ,  H01M4/38 ,  H01M4/58 ,  H01M10/0525 ,  H01M10/0562 ,  H01M10/058 ,  H01M10/446 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2220/20 ,  H01M2220/30 ,  H01M2300/0065 ,  H01M2300/0068 ,  Y02T10/7011

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.

Abstract translation: 主要目的是提供一种具有优异的充放电特性的新型材料，例如正极的高利用率，高容量和良好的循环特性，其中该材料是含有主要组分的硫化锂 可用作锂二次电池的正极活性物质。 本发明提供一种以锂，铁，硫和碳为组成元素的硫化锂 - 铁 - 碳复合材料，其中以硫化锂（Li2S）为主相，其半峰宽为50nm以下，微晶尺寸为50nm以下 基于通过X射线粉末衍射测定的Li 2 S的（111）面的衍射峰。