Abstract: An electrochemical cell is provided. The electrochemical cell includes a positive electrode including a first lithium metal-based material, the first lithium metal-based material including one or more transition metal ions, and wherein the positive electrode has an operating voltage of 4.5 volts versus lithium metal potential or greater. The electrochemical cell also includes an electrolyte formed from ingredients comprising a solvent and lithium salt. The solvent includes at least one carbonic ester. The electrochemical cell further includes a negative electrode including a second lithium metal-based material, the second lithium metal-based material including one or more transition metal ions.

Abstract: An electrochemical cell is provided. The electrochemical cell includes a positive electrode including a first lithium metal-based material, the first lithium metal-based material including one or more transition metal ions, and wherein the positive electrode has an operating voltage of 4.5 volts versus lithium metal potential or greater. The electrochemical cell also includes an electrolyte formed from ingredients comprising a solvent and lithium salt. The solvent includes at least one carbonic ester. The electrochemical cell further includes a negative electrode including a second lithium metal-based material, the second lithium metal-based material including one or more transition metal ions.

Abstract: In order to provide a 3V level non-aqueous electrolyte secondary battery with a flat voltage and excellent cycle life at a high rate with low cost, the present invention provides a positive electrode represented by the formula: Li2±?[Me]4O8?x, wherein 0??<0.4, 0?x<2, and Me is a transition metal containing Mn and at least one selected from the group consisting of Ni, Cr, Fe, Co and Cu, said active material exhibiting topotactic two-phase reactions during charge and discharge.

Abstract: An electrode of a non-aqueous electrolyte secondary battery comprises a current collector and a mixture comprising an electrode active material and a binder on the current collector. The electrode active material comprises a porous composite material, in which the porous composite material comprises a lithium absorbing material and a conductive material. The lithium absorbing material may be silicon, tin, silicon oxide, tin oxide, and mixtures thereof. The lithium absorbing material may specifically be the nanoparticles of silicon, tin, silicon oxide, tin oxide, and mixtures thereof. The conductive material may be, for example, acetylene black, ketchen black, carbon black, vapor grown carbon fibers (VGCF), and mixtures thereof. The conductive material may be disposed within the electrode active material rather than outside of the active material. The electrode active material is used in the electrodes of non-aqueous secondary batteries, preferably as the negative electrode active material.

Abstract: A non-aqueous electrolyte secondary battery including a positive electrode plate, a negative electrode plate, and a non-aqueous electrolyte containing a non-aqueous solvent and a solute dissolved in the non-aqueous solvent, wherein the non-aqueous electrolyte further contains a chain phosphoric acid ester and at least one imide salt represented by the formula (1): where R1 and R2 each independently represent CnX2n+1, X represents a hydrogen atom or halogen atom, and n is an integer equal to or greater than 1, and the amount of the chain phosphoric acid ester is 50 to 20000 ppm relative to the total weight of the non-aqueous electrolyte.

Abstract: A lithium secondary battery comprises a negative electrode, a positive electrode comprising a current collector, an active cathode material comprising a lithium transition metal complex oxide, and sulfur, and an electrolyte comprising at least one lithium salt and at least one solvent. The at least one lithium salt is one of LiPF6, LiAsF6, LiBF4, LiClO4, and mixtures thereof, and the at least one solvent is one of ethylene carbonate, propylene carbonate, butylene carbonate, ethyl methyl carbonate, dimethyl carbonate, diethyl carbonate, and mixtures thereof. The electrolyte remains stable throughout a state of overcharge. A method of using the lithium secondary battery includes overcharging the battery and maintaining the heat generation of the positive electrode comprising sulfur at levels lower relative to a positive electrode without sulfur.

Abstract: A lithium secondary battery comprises a negative electrode, a positive electrode comprising a current collector, an active cathode material comprising a lithium transition metal complex oxide coated on the current collector, and Si1-XGeXOY (0?X?1, 0?Y<2), and an electrolyte comprising at least one lithium salt and at least one solvent. The positive electrode comprising Si1-XGeXOY (0?X?1, 0?Y<2) generates less heat relative to a positive electrode without Si1-XGeXOY (0?X?1, 0?Y<2) throughout a state of overcharge. A method of preparing the positive electrode includes coating a current collector with the active cathode material, drying and calendaring the coated current collector to form the positive electrode, and depositing a calcinated mixture comprising Si1-XGeXOY (0?X?1, 0?Y<2) on the positive electrode.

Abstract: A resistivity of an active material is reduced to drastically decrease an amount of a conductive auxiliary agent to be added, in order to provide a non-aqueous electrolyte secondary battery with high capacity. A material represented by a composition formula: LixMeOyNz, wherein 0?x?2, 0.1<y<2.2, 0<z<1.4, and Me is at least one selected from the group consisting of Ti, Co, Ni, Mn, Si, Ge, and Sn is used as an active material.

Abstract: The present invention provides a safe non-aqueous electrolyte secondary battery with characteristics analogous to those of a conventional battery by minimizing battery expansion that causes damage to a device during high temperature exposure or storage. The non-aqueous electrolyte secondary battery comprises: (a) a chargeable and dischargeable positive electrode; (b) a negative electrode capable of absorbing and desorbing lithium; (c) a separator for preventing direct electron transfer between the positive electrode and the negative electrode; and (d) an non-aqueous electrolyte; the non-aqueous electrolyte comprising a non-aqueous solvent and a solute, the non-aqueous solvent comprising a lactone, the solute comprising lithium bis(fluorosulfonyl)imide represented by the formula (1): (F—O2S—N—SO2—F)Li.

Abstract: Negative electrodes and non-aqueous secondary batteries that comprise the negative electrodes are disclosed. The electrode comprises a current collector; and a mixture on the current collector, the mixture comprising a negative electrode active material, a conductive material, and a binder. The active material has the overall composition: AM1qM21-qOy; in which (1) A is LiX or LiX-rGr, in which G is selected from Na, K, Cs, Be, Mg, Ca, Sr, Ba, and mixtures thereof, in which G and M1 are different; (2) 0?x?3; 0<y?3; 0?q?1; and 0?r?3; and (3) either M1 is selected from Sn, Mg, and mixtures thereof, and M2 is selected from V, Ti, Nb, Mn, Cr, Sb, Mo, Zr, W, and mixtures thereof; or M1 is selected from Y, Co, and mixtures of two or more of Y, Co, Sn, and Mg, and M2 is selected from Ti, Nb, Mn, Cr, Sb, Mo, Zr, W, and mixtures thereof.

Abstract: A non-aqueous electrolyte secondary battery includes: a liquid electrolyte including a non-aqueous solvent and an alkali metal salt dissolved in the non-aqueous solvent; a positive electrode active material including a redox material that is dissolved or dispersed in the liquid electrolyte; a positive electrode current collector that provides a place where an oxidation-reduction reaction involving the positive electrode active material occurs; and a negative electrode capable of charging and discharging in which an alkali metal ion participates.

Abstract: This invention relates to a non-aqueous electrolyte including: a first solute; a second solute; and an organic solvent dissolving the first solute and the second solute. The first solute is a salt having at least one fluorine atom in an anion moiety thereof, and the second solute is an inorganic borate having at least one boron atom and at least one oxygen atom in an anion moiety thereof. The inclusion of the second solute in the non-aqueous electrolyte makes it possible to reduce the amount of gas produced even if an electrochemical device including the non-aqueous electrolyte is stored at high temperatures. It is also possible to improve the high-rate discharge characteristics and discharge cycle characteristics.

Abstract: A lithium-ion rechargeable battery, comprising a positive electrode capable of absorbing and desorbing lithium ions, a negative electrode capable of absorbing and desorbing lithium ions, a separator interposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte, wherein the negative electrode comprises a negative electrode current collector and a negative electrode material mixture layer carried on the negative electrode current collector, the negative electrode material mixture layer comprises graphite and carbon nano-tubes, and an amount of the carbon nano-tubes in the negative electrode material mixture layer is not smaller than 0.1 part by weight and not larger than 10 parts by weight, per 100 parts by weight of the graphite.

Abstract: In order to provide a 3V level non-aqueous electrolyte secondary battery with a flat voltage and excellent cycle life at a high rate with low cost, the present invention provides a positive electrode represented by the formula: Li2±?[Me]4O8?x, wherein 0??<0.4, 0?x<2, and Me is a transition metal containing Mn and at least one selected from the group consisting of Ni, Cr, Fe, Co and Cu, said active material exhibiting topotactic two-phase reactions during charge and discharge.

Abstract: In a rechargeable non-aqueous electrolyte secondary battery containing positive electrodes, negative electrodes and a non-aqueous solvent, an organic compound having a HOMO energy of ?8.5 eV to ?11.0 eV and a LUMO energy of ?0.135 eV to 3.5 eV which are calculated using PM3 method for Hamiltonian in semiempirical molecular orbital calculation method is added to the non-aqueous solvent. According to the present invention, batteries excellent in safety and long-term reliability and portable information devices are provided.

Abstract: A non-aqueous electrolyte secondary battery includes: a liquid electrolyte including a non-aqueous solvent and an alkali metal salt dissolved in the non-aqueous solvent; a positive electrode active material including a redox material that is dissolved or dispersed in the liquid electrolyte; a positive electrode current collector that provides a place where an oxidation-reduction reaction involving the positive electrode active material occurs; and a negative electrode capable of charging and discharging in which an alkali metal ion participates.

Abstract: A negative electrode for a non-aqueous electrolyte secondary battery includes a current collector, a first layer and a second layer. The first layer is provided on the current collector and includes at least any one of alkaline metals and alkaline earth metals. The second layer is provided on the first layer, and includes an active material capable of absorbing and desorbing lithium ions having a barrier function of blocking ingress of gas.

Abstract: By using a winding type electrode plate assembly resistant to displacement by wind-up and buckling, a lithium ion secondary battery, capable of suppressing deterioration in cycle and storage characteristic caused by expansion and shrinkage of the electrode plate due to charge/discharge cycles or by generation of gas during storage at high temperatures or the like, is accomplished. An electrode plate A comprising a binder mainly composed of a polymer material “a” and an electrode plate B, having the opposite polarity to the electrode plate A, with a porous polymer layer mainly composed of the polymer material “a” or a copolymer of the polymer material “a” formed thereon, are wound up in flat form to give a flat electrode plate assembly, which is soaked in a non-aqueous electrolyte and then heated and cooled, with the soaked state maintained, while pressure is applied in the direction of the thickness of the flat electrode plate assembly, to integrate the electrode plate assembly.

Abstract: A non-aqueous electrolyte secondary battery including a positive electrode plate, a negative electrode plate, and a non-aqueous electrolyte containing a non-aqueous solvent and a solute dissolved in the non-aqueous solvent, wherein the non-aqueous electrolyte further contains a chain phosphoric acid ester and at least one imide salt represented by the formula (1): where R1 and R2 each independently represent CnX2n+1, X represents a hydrogen atom or halogen atom, and n is an integer equal to or greater than 1, and the amount of the chain phosphoric acid ester is 50 to 20000 ppm relative to the total weight of the non-aqueous electrolyte.

Abstract: The present invention provides a highly-reliable non-aqueous electrolyte secondary battery excellent in safety. The non-aqueous electrolyte secondary battery includes an electrode group, a non-aqueous electrolyte and a case accommodating the electrode group and the non-aqueous electrolyte. The non-aqueous electrolyte contains a specific bromine compound having an aromatic ring.