NEGATIVE ELECTRODE ACTIVE MATERIAL, NEGATIVE ELECTRODE INCLUDING THE NEGATIVE ELECTRODE ACTIVE MATERIAL, LITHIUM BATTERY, AND METHOD OF MANUFACTURING THE NEGATIVE ELECTRODE ACTIVE MATERIAL

• Main Authors: SUH SOON-SUNG, KIM JAE-HYUK, YURY MATULEVICH, KWON SEUNG-UK, CHU HEE-YOUNG, PARK YO HAN, JEONG CHANG-UI, LEE CHUN-GYOO
• Format: Patent
• Language: English; Japanese
• Published: 03.08.2015
• Subjects: ALLOYS; BASIC ELECTRIC ELEMENTS; CASTING; CHEMISTRY; COMPOUNDS THEREOF; ELECTRICITY; FERROUS OR NON-FERROUS ALLOYS; INORGANIC CHEMISTRY; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METALLURGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; POWDER METALLURGY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WORKING METALLIC POWDER

PROBLEM TO BE SOLVED: To provide a negative electrode active material, a negative electrode including the negative electrode active material, a lithium battery, and a method of manufacturing the negative electrode active material.SOLUTION: The present invention relates to a negative electrode active material, a negative electrode including the negative electrode active material, a lithium battery, and a method of manufacturing the negative electrode active material. The negative electrode active material includes a silicon-based alloy consisting of Si, Ti, Ni, Fe and inevitable impurities. The silicon-based alloy includes a TiNi phase as an inactive phase and active silicon having a lower content than that of conventional ones. The negative electrode active material may improve discharge capacity and lifetime characteristics of lithium batteries. 【課題】負極活物質、それを採用した負極及び該リチウム電池、並びに該負極活物質の製造方法を提供する。【解決手段】負極活物質、それを採用した負極及びリチウム電池、そして該負極活物質の製造方法に係り、該負極活物質は、Ｓｉ、Ｔｉ、Ｎｉ、Ｆｅ及び不可避的に含まれる不純物からなるシリコン系合金を含み、該シリコン系合金は、非活性相としてＴｉ２Ｎｉ相を含み、既存より少ない含量の活性シリコンを含み、該負極活物質は、リチウム電池の放電容量及び寿命特性を向上させる。【選択図】図１