Abstract:
PURPOSE: Anodal active material and a lithium secondary battery having the same are provided to enhance structural stability and reactivity of the surface and to have long life time without deterioration of high-rates. CONSTITUTION: Anodal active material for a non-aqueous based lithium secondary battery has carbon-containing material and a coating layer with heat-treated surface of the carbon-containing material by using ammonia based compound. Ammonia of ammonia based compound is removed by thermal processing and other inorganic material forms the coating layer on carbon-containing material. A manufacturing method of the anodal active material for the non-aqueous based lithium secondary battery comprises the steps of: preparing the carbon-containing material and ammonia based compound and producing the coating layer on the surface of the carbon-containing material by using ammonia based compound. [Reference numerals] (AA) Start; (BB) End; (S11) Preparing carbon-containing material and ammonia based compound; (S13) Forming aqueous solution by resolving carbon-containing material and ammonia based compound in water; (S15) Evenly mixing carbon-containing material and ammonia based compound in the aqueous solution; (S17) Vacuum drying; (S19) Producing the coating layer on the surface of the carbon-containing material by using ammonia based compound
Abstract:
PURPOSE: A negative electrode active material is provided to retrain side reaction with an electrolyte on the surface of carbon based material and to improve structural stability by heat-treating an ammonia based compound on the surface of the carbon based material, thereby improving the life time property and the high-rate property of a lithium secondary battery. CONSTITUTION: A negative electrode active material for non-aqueous lithium secondary battery comprise carbon based material, and a coating layer formed by heat-treating an ammonia based compound on the surface of the carbon based material. The ammonia based compound has chemical formula: (NH_4)_xM_yN_z. In chemical formula, M is B, P, Al, N, S, Mo, Mn, Pt or Cr, N is F, O, Cl or I, and 1
Abstract translation:目的:提供一种负极活性材料,用于与碳基材料表面上的电解质再次反应,并通过在碳基材料的表面上热处理氨基化合物来提高结构稳定性,从而提高寿命 财产和锂二次电池的高利率财产。 构成:用于非水锂二次电池的负极活性物质包括碳基材料和通过在碳基材料的表面上热处理氨基化合物形成的涂层。 氨基化合物具有化学式:(NH_4)_xM_yN_z。 在化学式中,M是B,P,Al,N,S,Mo,Mn,Pt或Cr,N是F,O,Cl或I,1 <= x <= 3,0 <= y <= 2 ,1 <= z <= 8。 通过热解法将基于碳类材料的10重量%以下的氨化合物进行热处理而形成涂层。