Class / Patent application number | Description | Number of patent applications / Date published |
429222000 | Cadmium component is active material | 12 |
20080241691 | SINTERED SUBSTRATE AND ALKALINE STORAGE BATTERY USING THE SUBSTRATE - A sintered substrate is configured such that pores having a pore size (pore radius) of from 5 μm to 7 μm have a peak volume fraction with respect to the total pore volume of the sintered substrate, and pores having a pore radius of greater than 8.5 μm has a volume fraction of 11% or less with respect to the total pore volume of the sintered substrate. The sintered substrate has a smaller number of large-sized pores than conventional sintered substrates and a more uniform pore size distribution, and therefore shows a sufficient strength even when the porosity is increased. In addition, a cadmium negative electrode employing the sintered substrate shows excellent gas absorption capability and therefore can reduce the internal pressure of the battery during charge. | 10-02-2008 |
20090081548 | LITHIUM ION SECONDARY BATTERY - The positive electrode of the lithium ion secondary battery includes active material particles containing a lithium composite oxide represented by: | 03-26-2009 |
20090081549 | Electrochemical Composition and Associated Technology - A composition for use in an electrochemical redox reaction is described. The composition may comprise a material represented by a general formula M | 03-26-2009 |
20090098461 | POSITIVE ELECTRODE FOR AN ELECTROCHEMICAL GENERATOR WITH AN ALKALINE ELECTROLYTE - An electrochemical generator comprising at least one negative electrode and at least one positive electrode, said positive electrode comprising a paste comprising an electrochemically active material, a binder and strontium sulphate SrSO | 04-16-2009 |
20090176159 | Mixed nano-filament electrode materials for lithium ion batteries - This invention provides a mixed nano-filament composition for use as an electrochemical cell electrode. The composition comprises: (a) an aggregate of nanometer-scaled, electrically conductive filaments that are substantially interconnected, intersected, or percolated to form a porous, electrically conductive filament network, wherein the filaments have a length and a diameter or thickness with the diameter/thickness less than 500 nm (preferably <100 nm) and a length-to-diameter or length-to-thickness aspect ratio greater than 10; and (b) Multiple nanometer-scaled, electro-active filaments comprising an electro-active material capable of absorbing and desorbing lithium ions wherein the electro-active filaments have a diameter or thickness less than 500 nm (preferably <100 nm). The electro-active filaments (e.g., nanowires) and the electrically conductive filaments (e.g., carbon nano fibers) are mixed to form a mat-, web-, or porous paper-like structure in which at least an electro-active filament is in electrical contact with at least an electrically conductive filament. Also provided is a lithium ion battery comprising such an electrode as an anode or cathode, or both. The battery exhibits an exceptionally high specific capacity, an excellent reversible capacity, and a long cycle life. | 07-09-2009 |
20100173198 | Secondary lithium ion battery containing a prelithiated anode - The present invention provides a lithium ion battery that exhibits a significantly improved specific capacity and much longer charge-discharge cycle life. In one preferred embodiment, the battery comprises an anode active material that has been prelithiated and pre-pulverized. This anode may be prepared with a method that comprises (a) providing an anode active material (preferably in the form of fine powder or thin film); (b) intercalating or absorbing a desired amount of lithium into the anode active material to produce a prelithiated anode active material; (c) comminuting the prelithiated anode active material into fine particles with an average size less than 10 μm (preferably <1 μm and most preferably <200 nm); and (d) combining multiple fine particles of the prelithiated anode active material with a conductive additive and/or a binder material to form the anode. Preferably, the prelithiated particles are protected by a lithium ion-conducting matrix or coating material. Further preferably, the matrix material is reinforced with nano graphene platelets. | 07-08-2010 |
20110236758 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND FABRICATION METHOD FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A non-aqueous electrolyte secondary battery according to the present invention has a positive electrode comprising a positive electrode active material, a negative electrode comprising a negative electrode active material and a non-aqueous electrolyte, wherein a mixture of at least one metal selected from zinc and cadmium having an average particle diameter in a range of from 0.25 μm to 100 μm and carbon is used as the negative electrode active material. | 09-29-2011 |
20140141334 | POROUS COMPOSITE AND MANUFACTURING METHOD THEREOF - Provided are a porous composite expressed by Chemical Formula 1 and having a porosity of 5% to 90%, and a method of preparing the same: | 05-22-2014 |
20140154576 | COMPOSITE FOR ANODE ACTIVE MATERIAL AND METHOD OF PREPARING THE SAME - Provided are a composite for an anode active material and a method of preparing the same. More particularly, the present invention provides a composite for an anode active material including a (semi) metal oxide and an amorphous carbon layer on a surface of the (semi) metal oxide, wherein the amorphous carbon layer comprises a conductive agent, and a method of preparing the composite. | 06-05-2014 |
20140272589 | NEGATIVE ELECTRODE ACTIVE MATERIAL FOR ELECTRIC DEVICE - A negative electrode active material for an electric device according to the present invention includes crystalline metal having a structure in which a size in a perpendicular direction to a crystal slip plane is 500 nm or less. More preferably, the size in the perpendicular direction to the crystal slip plane is controlled to become 100 nm or less. As described above, a thickness in an orientation of the slip plane is controlled to become sufficiently small, and accordingly, micronization of the crystalline metal is suppressed even if breakage occurs from the slip plane taken as a starting point. Hence, a deterioration of a cycle lifetime can be prevented by applying the negative electrode active material for an electric device, which is as described above, or a negative electrode using the same, to an electric device, for example, such as a lithium ion secondary battery. | 09-18-2014 |
20140302392 | UNIFORM STABILIZATION NANOCOATINGS FOR LITHIUM RICH COMPLEX METAL OXIDES AND ATOMIC LAYER DEPOSITION FOR FORMING THE COATING - Stabilization coating that are uniform and penetrating have been found to provide desirable stabilization coatings for lithium rich metal oxide cathode active materials. In particular, the uniform and penetrating coatings can be particularly desirable for improving storage stability of batteries formed with the active material. The stabilization coatings can be inert metal oxides, such as aluminum oxide. The uniform and penetrating stabilization coatings can be formed using atomic layer deposition. The coatings can further effectively stabilize cycling of the batteries, and batteries formed with the stabilization coating can exhibit modest increases in DC electrical resistance. | 10-09-2014 |
20140322606 | ANODE ACTIVE MATERIAL, LITHIUM SECONDARY BATTERY COMPRISING THE SAME, AND METHOD OF MANUFACTURING ANODE ACTIVE MATERIAL - The present disclosure relates to an anode active material comprising a composite of a core-shell structure, a lithium secondary battery comprising the same, and a method of manufacturing the anode active material. According to an aspect of the present disclosure, there is provided an anode active material of a core-shell structure comprising a core including alloyed (quasi)metal oxide-Li (MO | 10-30-2014 |