摘要:
A method for manufacturing a lithium ion secondary battery, the lithium ion secondary battery including a positive electrode and a negative electrode disposed with a separator sandwiched therebetween and contained together with an electrolytic solution in an outer case including a flexible film, wherein the quantity of dissolved nitrogen in the electrolytic solution in injecting the electrolytic solution into the outer case is 100 µg/mL or less.
摘要:
A cooling circuit (4) with cooling liquid for lithiumion batteries comprising a battery pack (8) comprising a plurality of cells (16) electrically connected with each other, suitable for powering an electric machine for traction (12), said cells (16) being perimetrically delimited by external walls (20), at least one bag (24) containing cooling liquid associated in contact with said outer walls (20) of the cells (16). Advantageously, at least one bag (24) is made of deformable plastic material so as to be counter-shaped to said outer walls (20) to adhere perimetrally to said outer walls (20) and the circuit comprises means of forced circulation (27) of the cooling liquid through said at least one bag (24).
摘要:
The present invention is to provide a negative electrode active material for nonaqueous secondary batteries, which prevents increase in negative electrode resistance and improves initial charge/discharge efficiency and the effect of preventing gas generation and which is excellent in cycle characteristics. The present invention relates to a negative electrode active material for nonaqueous secondary batteries, which comprises an active material (A) capable of occluding and releasing lithium ions and an organic compound (B), wherein the organic compound (B) has a basic group and a lithium ion-coordinating group, and has a specific structure (S).
摘要:
The exemplary embodiment has an object to provide a nonaqueous electrolyte solution having a flame retardancy over a long period and having a good capacity maintenance rate. The exemplary embodiment is a nonaqueous electrolyte solution containing a lithium salt, at least one oxo-acid ester derivative of phosphorus selected from compounds represented by a predetermined formula, and at least one disulfonate ester selected from a cyclic disulfonate ester and a linear disulfonate ester represented by the predetermined formulae.
摘要:
According to one approach, an electrode is provided. The electrode includes a current collector and an electrode layer. The electrode layer is disposed on the current collector and includes lithium fluoride. A first content of lithium fluoride in a first region is 0.02% by weight or more and less than 2% by weight. The first region is adjacent to an interface between the electrode layer and the current collector, and has a first thickness equal to 20% with respect to a thickness of the electrode layer. A second content of lithium fluoride in a second region is from 2% by weight to 10% by weight. The second region is adjacent to a surface on a reverse side of the electrode layer, and has the first thickness.
摘要:
Provide is a separator for a power storage device, which is able to reliably prevent short circuit between a positive electrode layer and a negative electrode layer while maintaining the function of permeating ions, and able to effectively suppress shrinkage, and a power storage device using the separator. In a separator for a power storage device, which is composed of a composite material including inorganic microparticles and an organic binder, the separator being for use in a power storage device structured such that a positive electrode layer and a negative electrode layer are stacked so as to be opposed to each other with a separator interposed therebetween, and housed along with an electrolyte solution in an outer packaging, (a) the composite material has a pigment volume concentration PVC of 55% or more, and (b) the inorganic microparticles have an average particle size in the range of 0.2 to 3.0 µm, and a general particle shape index in the range of 0.50 to 0.85. In addition, the composite material has a pigment volume concentration PVC in the range of 55 to 80%. Furthermore, the composite material has a pigment volume concentration PVC in the range of 55 to 65%.
摘要:
There is provided a lithium ion secondary battery having a positive electrode comprising a lithium nickel composite oxide as a positive electrode active material, and a separator consisting of one or more layers selected from a polyimide layer, a polyamide layer, and a polyamide imide layer, the lithium secondary battery exhibiting a low self-discharge failure rate even after long term storage. The present invention pertains to a lithium ion secondary battery having a positive electrode comprising a positive electrode active material comprising a lithium nickel composite oxide and a separator consisting of one or more layers selected from a polyimide layer, a polyamide layer, and a polyamide imide layer, wherein a suspension prepared by mixing the positive electrode active material and a deionized water at a mass ratio of 2:98 shows a pH of 9.3 or less.
摘要:
The present invention relates to a negative electrode active material for a lithium secondary battery, which includes (A) first artificial graphite having an average particle diameter (D50) of 15 µm to 20 µm and (B) second artificial graphite having an average particle diameter (D50) of 3 µm to 5 µm, wherein the first artificial graphite (A) includes a secondary artificial graphite particle, in which at least one primary artificial graphite particle is agglomerated, and a carbon coating layer, and a weight ratio of the first artificial graphite to the second artificial graphite is in a range of 85:15 to 95:5, a negative electrode including the same, and a lithium secondary battery including the negative electrode.
摘要:
The present invention relates to a positive electrode active material for a lithium secondary batter, a method of preparing the same, and a lithium secondary battery including the same. The positive electrode active material includes lithium cobalt oxide particles; and a surface treatment layer positioned on a surface of the lithium cobalt oxide particle, and the lithium cobalt oxide particle includes lithium deficient lithium cobalt oxide having a Li/Co molar ratio of less than 1, included in an Fd-3m space group, and having a cubic-type crystal structure, in a surface side of the particle. The surface treatment layer includes at least one element selected from the group consisting of transition metals and elements in group 13. The side reaction with an electrolyte may be restrained, and high packing density may be attained, thereby improved rate characteristic and initial capacity property may be obtained together with high capacity property. In addition, lithium conductivity is good, and good output property and life property may be obtained.
摘要:
The present specification relates to a lithium-sulfur battery including an anode, a cathode, and an electrolyte provided between the anode and the cathode, and a battery module including the same.