发明名称 |
LITHIUM SULFIDE-IRON-CARBON COMPLEX |
摘要 |
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. |
申请公布号 |
US2016268606(A1) |
申请公布日期 |
2016.09.15 |
申请号 |
US201415021041 |
申请日期 |
2014.09.10 |
申请人 |
NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY |
发明人 |
Takeuchi Tomonari;Sakuda Atsushi;Kageyama Hiroyuki;Sakaebe Hikari;Tatsumi Kuniaki |
分类号 |
H01M4/58;H01M10/0525;H01M10/0562;H01M4/1397;H01M10/44;H01M4/04;H01M4/136;H01M4/38;H01M10/058 |
主分类号 |
H01M4/58 |
代理机构 |
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代理人 |
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主权项 |
1. A lithium sulfide-iron-carbon composite comprising, as constituent elements, lithium, iron, sulfur, and carbon, wherein lithium sulfide (Li2S) is present as the main phase, and wherein the crystallite size calculated from a half width of a diffraction peak based on the (111) plane of Li2S as determined by X-ray powder diffraction is 50 nm or less. |
地址 |
Tokyo JP |