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。