STABILIZED LITHIUM POWDER AND LITHIUM ION SECONDARY BATTERY USING THE SAME

• Main Authors: AKIMOTO KAZUMA, KITAMURA HIROTAKA, YAMAMOTO YUJI, TSUCHIYA MASAHIRO
• Format: Patent
• Language: English; Japanese
• Published: 17.11.2016
• Subjects: BASIC ELECTRIC ELEMENTS; CASTING; ELECTRICITY; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; PERFORMING OPERATIONS; POWDER METALLURGY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; TRANSPORTING; WORKING METALLIC POWDER

PROBLEM TO BE SOLVED: To provide a stabilized lithium powder capable of promoting doping without generating a defect, such as a crack in an anode and improving an initial charge-discharge efficiency.SOLUTION: The stabilized lithium powder has a stabilized coating on the surface of a lithium particle. The stabilized coating has a peak A having a half value width of 35 cmor less when a peak existing in a range of 1750 cmto 1900 cmin a Raman spectrum is set to the peak A.SELECTED DRAWING: Figure 2 【課題】負極にクラック等の欠陥を生じずにドープを進行させることができ、初期充放電効率を改善することが可能な安定化リチウム粉を提供すること。【解決手段】リチウム粒子の表面に安定化被膜を有する安定化リチウム粉であって、前記安定化被膜はラマンスペクトルにおいて、１７５０ｃｍ−１〜１９００ｃｍ−１の範囲に存在するピークをピークＡとし、ピークＡの半値幅が３５ｃｍ−１以下であることを特徴とする安定化リチウム粉。【選択図】図２