Patent application number | Description | Published |
20100078591 | ACTIVE MATERIAL AND METHOD OF MANUFACTURING ACTIVE MATERIAL - An active material capable of forming an electrochemical device excellent in its discharge capacity and rate characteristic is provided. The active material in accordance with a first aspect of the present invention comprises a compound particle containing a compound having a composition represented by the following chemical formula (1), a carbon layer covering the compound particle, and a carbon particle. The active material in accordance with a second aspect of the present invention comprises a carbon particle and a compound particle having an average primary particle size of 0.03 to 1.4 μm, being carried by the carbon particle, and containing a compound represented by the following chemical formula (1): | 04-01-2010 |
20100081058 | ACTIVE MATERIAL AND POSITIVE ELECTRODE AND LITHIUM-ION SECOND BATTERY USING SAME - An active material contains a triclinic LiVOPO | 04-01-2010 |
20100233058 | METHOD OF MANUFACTURING ACTIVE MATERIAL - The present invention provides a method of manufacturing an active material which can form an electrochemical device excellent in discharge capacity. The method of manufacturing an active material in accordance with the present invention comprises a hydrothermal synthesis step of heating a mixture including a lithium compound, a metal compound containing one species selected from the group consisting of Fe, Mn, Co, Ni, and V, a phosphorus compound, and water within a reactor while keeping an internal pressure of the reactor at 0.3 MPa or lower by ventilating the inside of the reactor to the outside, and closing the reactor at a time when the temperature of the mixture reaches 100 to 150° C.; and a firing step of firing the mixture after the hydrothermal synthesis step. | 09-16-2010 |
20100233544 | METHOD OF MANUFACTURING ACTIVE MATERIAL, ACTIVE MATERIAL, ELECTRODE, AND LITHIUM-ION SECONDARY BATTERY - The present invention provides a method of manufacturing an active material comprising both α-LiVOPO | 09-16-2010 |
20100233545 | ACTIVE MATERIAL, METHOD OF MANUFACTURING ACTIVE MATERIAL, ELECTRODE, AND LITHIUM-ION SECONDARY BATTERY - The first aspect of the invention provides a method of manufacturing an active material capable of selectively synthesizing β-LiVOPO | 09-16-2010 |
20100304217 | ACTIVE MATERIAL, METHOD OF MANUFACTURING ACTIVE MATERIAL, AND LITHIUM-ION SECONDARY BATTERY - The present invention provides an active material which can increase the discharge capacity of a lithium-ion secondary battery as compared with the case using conventional LiMnPO | 12-02-2010 |
20110052473 | METHOD OF MANUFACTURING ACTIVE MATERIAL - Methods of manufacturing an active material capable of improving the discharge capacity of a lithium-ion secondary battery are provided. The first method of manufacturing an active material comprises a hydrothermal synthesis step of heating a mixture containing a lithium source, a phosphate source, a vanadium source, water, and a reducing agent to 100 to 195° C. under pressure; and a heat treatment step of heating the mixture to 500 to 700° C. after the hydrothermal synthesis step. The hydrothermal synthesis step adjusts the ratio [P]/[V] of the number of moles of phosphorus [P] contained in the mixture before heating to the number of moles of vanadium [V] contained in the mixture before heating to 0.9 to 1.2. The second method of manufacturing an active material comprises a hydrothermal synthesis step of heating a mixture containing a lithium source, a phosphate source, a vanadium source, water, and a reducing agent to 200 to 300° C. under pressure and adjusts the ratio [P]/[V] of the number of moles of phosphorus [P] contained in the mixture before heating to the number of moles of vanadium [V] contained in the mixture before heating to 0.9 to 1.5. | 03-03-2011 |
20110052992 | ACTIVE MATERIAL, LITHIUM-ION SECONDARY BATTERY, AND METHOD OF MANUFACTURING ACTIVE MATERIAL - An active material which can improve the discharge capacity of a lithium-ion secondary battery is provided. The active material of the present invention contains a rod-shaped particle group having a β-type crystal structure of LiVOPO | 03-03-2011 |
20110052995 | ACTIVE MATERIAL, ELECTRODE CONTAINING THE SAME, LITHIUM SECONDARY BATTERY PROVIDED THEREWITH AND METHOD FOR MANUFACTURE OF THE ACTIVE MATERIAL - A method for manufacturing an active material comprising:
| 03-03-2011 |
20110072649 | METHOD OF MANUFACTURING ACTIVE MATERIAL AND METHOD OF MANUFACTURING LITHIUM-ION SECONDARY BATTERY - The first aspect of the present invention provides a method of manufacturing an active material capable of improving the discharge capacity of a lithium-ion secondary battery. The method of manufacturing an active material in accordance with the first aspect of the present invention comprises the steps of heating a phosphate source, a vanadium source, and water so as to form an intermediate containing phosphorus and vanadium and having a specific surface area of at least 0.1 m | 03-31-2011 |
20110311868 | ACTIVE MATERIAL, ELECTRODE CONTAINING SAME, LITHIUM-ION SECONDARY BATTERY WITH THE ELECTRODE, AND METHOD OF MANUFACTURING ACTIVE MATERIAL - The method of manufacturing an active material in accordance with the first aspect of the invention yields an active material containing LiVOPO | 12-22-2011 |
20130130106 | ACTIVE MATERIAL, ELECTRODE CONTAINING THE ACTIVE MATERIAL, LITHIUM SECONDARY BATTERY INCLUDING THE ELECTRODE, AND METHOD FOR MAKING ACTIVE MATERIAL - To provide an active material from which a sufficient discharge capacity is obtained, an electrode containing the active material, a lithium secondary battery including the electrode, and a method for making an active material. A method for making an active material includes a temperature elevation step of heating a mixture containing a lithium source, a pentavalent vanadium source, a phosphoric acid source, water, and a reductant in a hermetically sealed container at a temperature elevation rate T1 from 25° C. to 110° C. and then at a temperature elevation rate T2 from 110° C. to a designated temperature of 200° C. or more, in which T1>T2; T1=0.5 to 10° C./min; and T2=0.1 to 2.2° C./min. | 05-23-2013 |
20130256592 | LITHIUM-ION SECONDARY BATTERY - The lithium-ion secondary battery in which a positive electrode contains Li | 10-03-2013 |
20130260226 | NONAQUEOUS ELECTROLYTE FOR LITHIUM-ION SECONDARY BATTERY AND LITHIUM-ION SECONDARY BATTERY - A nonaqueous electrolyte for a lithium-ion secondary battery containing 0.1 ppm to 20 ppm of vanadium in terms of vanadium ions, and containing cyclic carbonate and chain carbonate is used. | 10-03-2013 |
20130260228 | LITHIUM-ION SECONDARY BATTERY - The lithium-ion secondary battery includes a positive electrode containing an active material made of a compound including lithium and a transition metal; an electrolyte containing 5 to 30 ppm of hydrofluoric acid; and a negative electrode containing 1 to 100 ppm of vanadium. | 10-03-2013 |
20130260253 | POSITIVE ELECTRODE MATERIAL FOR LITHIUM ION SECONDARY BATTERY, POSITIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY, AND LITHIUM ION SECONDARY BATTERY - A positive electrode material for a lithium ion secondary battery contains a first compound represented by Li | 10-03-2013 |
20130330261 | ACTIVE MATERIAL AND POSITIVE ELECTRODE AND LITHIUM-ION SECOND BATTERY USING SAME - A method for manufacturing an active material containing a triclinic LiVOPO | 12-12-2013 |
20140001413 | ACTIVE MATERIAL, ELECTRODE, LITHIUM ION SECONDARY BATTERY, AND METHOD FOR MANUFACTURING ACTIVE MATERIAL | 01-02-2014 |
20140004416 | ACTIVE MATERIAL, METHOD FOR MANUFACTURING ACTIVE MATERIAL, ELECTRODE, LITHIUM ION SECONDARY BATTERY, AND METHOD FOR MANUFACTURING LITHIUM ION SECONDARY BATTERY | 01-02-2014 |
20140004417 | ACTIVE MATERIAL, METHOD FOR MANUFACTURING ACTIVE MATERIAL, ELECTRODE, AND LITHIUM ION SECONDARY BATTERY | 01-02-2014 |