摘要:
A non-aqueous electrolytic solution secondary battery includes a positive electrode containing, as a positive electrode active material, a compound represented by the following general formula, LixFe1-yMyPO4, wherein M is at least one member selected from the group consisting of Co, Ni, Cu, Zn, Al, Sn, B, Ga, Cr, V, Ti, Mg, Ca and Sr; 0.9
摘要:
A battery with improved safety that can more surely short-circuit electrodes when flattened out by the external force is provided. A center pin (30) is inserted in the center of a spirally wound electrode body formed by layering and spirally winding a cathode and an anode with a separator in between. The center pin (30) has a cut line (31) provided in the longitudinal direction and a first cutout (32) vertically crossing the cut line (31). When flattened out by the external force, a corner (33) at an intersection of the cut line (31) and the first cutout (32) is projected, and short-circuit is surely generated. Further, it is preferable that the center pin (30) has a second cutout (34) in the direction perpendicular to the cut line (31) in a position facing the cut line (31) in the circumferential direction. It is also preferable that the center pin (30) has a cross sectional shape of an oval or an ellipse, and the cut line (31) is provided in a position where the diameter of the oval or the ellipse is the largest.
摘要:
A cell in which liquid leakage or destruction may be prevented as the apparent energy density per unit volume of the cell is maintained. The cell uses, as a cathode active material, a compound of an olivinic crystal structure having the formula LixFe1−yMyPO4, where M is at least one selected from the group of Mn, Cr, Co, Cu, Ni, V, Mo, Ti, Zn, Al, Ga, Mg, B and Nb, with 0.05≦x≦1.2 and 0≦y≦0.8. By adjusting the amount of the electrolyte solution, the amount of the void in the container is set so as to be not less than 0.14 cc and not more than 0.3 cc per 1 Ah of the cell capacity.
摘要翻译:可以防止液体泄漏或破坏的电池,因为电池单位体积的表观能量密度得以保持。 该电池使用具有下式的橄榄石晶体结构的作为阴极活性材料的化合物:其中R 1,R 2,R 3, 其中M为选自Mn,Cr,Co,Cu,Ni,V,Mo,Ti,Zn,Al,Ga,Mg,B和Nb中的至少一种,0.05 <= x <= 1.2,0 <= y <= 0.8。 通过调整电解液的量,将容器内的空隙量设定为每1 Ah电池容量不低于0.14cc且不大于0.3cc。
摘要:
A LiFePO4 carbon composite material is to be synthesized in a single phase satisfactorily to prevent the deterioration of the performance of the cathode active material from occurring and achieve superior cell characteristics. In preparing a cathode active material, starting materials for synthesis of a compound represented by the general formula LixFePO4, where 0
摘要:
The invention provides an electrolyte whose battery capacity, cycle characteristics, load characteristics, and low temperature characteristics are all excellent, and a battery using it. A cathode and an anode are layered and wound with a separator and electrolyte layer in between. The electrolyte layer contains a high molecular weight compound and an electrolytic solution containing at least one from the group consisting of vinylethylene carbonate and its derivatives in the range of 0.05 wt % to 5 wt % in total. Therefore, chemical stability of the electrolyte layer is improved. It is preferable that the electrolytic solution further contains ethylene carbonate and propylene carbonate by a mass ratio of ethylene carbonate:propylene carbonate=15-75:85-25.
摘要:
A method for producing a cathode active material having superior cell characteristics through single-phase synthesis of a composite material composed of a compound represented by the general formula LixFe1-yMyPO4 and a carbon material positively and a method for producing a non-aqueous electrolyte cell employing the so produced cathode active material. To this end, the cathode active material is prepared by a step of mixing the starting materials for synthesis of the compound represented by the general formula LixFe1-yMyPO4, a step of milling a mixture obtained by the mixing step, a step of compressing the mixture obtained by the mixing step to a preset density and a step of sintering the mixture obtained by the compressing step. A carbon material is added in any one of the above steps prior to the sintering step. The density of the mixture in the compressing step is set to not less than 1.71 g/cm3 and not larger than 2.45 g/cm3.
摘要翻译:通过由通式Li x Fe 1-y M y PO 4表示的化合物和碳材料构成的复合材料通过单相合成制造具有优异的电池特性的正极活性物质的制造方法以及使用 这样生产的阴极活性材料。 为此,通过混合由通式LixFe1-yMyPO4表示的化合物的合成原料,通过混合步骤研磨混合物的步骤,压缩混合物的步骤来制备阴极活性材料 通过混合步骤获得预定浓度,以及烧结通过压缩步骤获得的混合物的步骤。 在烧结步骤之前,在上述任一步骤中加入碳材料。 压缩步骤中混合物的密度设定为不小于1.71g / cm 3且不大于2.45g / cm 3。
摘要:
The present invention provides a non-aqueous electrolyte secondary cell including: a cathode containing a manganese oxide or a lithium-manganese composite oxide; an anode containing a lithium metal, a lithium alloy, or a material capable of doping/dedoping lithium; and an electrolyte containing at least two electrolyte salts, one of which is LiBF4 contained in the range from 0.005 mol/l to 0.3 mol/l. This enables to increase the cycle characteristic, preventing deterioration of the cell characteristic caused by a repeated use.