Sony Corporation

Tomoyo Ooyama

Haruo Watanabe

Yosuke Hosoya

Masanori Soma

Koji Morita

Hideto Azuma

Kenji Ogisu

Shigeru Fujita

Hideki Nakai

Guohua Li

Yoshihiro Kudo

Shunsuke Saito

Kotaro Satori

Nozomu Morita

Kiyohiko Suzuki

Yukifumi Takeda

Tadahiko Kubota

Kunihiko Hayashi

Yoshikazu Kato

Ichiro Yamada

Asuki Yanagihara

Shuhei Sugita

Shinichi Katayama

Nobuya Okano

Noritoshi Araki

Muneaki Ando

A battery is composed of a positive electrode in which a positive electrode active material layer including a positive electrode active material is formed on a positive electrode collector, a negative electrode in which a negative electrode active material layer including a negative electrode active material is formed on a negative electrode collector, a separator provided between the positive electrode and the negative electrode, and an electrolyte impregnated in the separator. The battery further includes at least one of a heteropoly acid and a heteropoly acid compound as an additive at least in one of the positive electrode, the negative electrode, the separator, and the electrolyte.

Non-aqueous electrolyte battery including an amorphous material

A cathode active material capable of obtaining a high capacity and capable of improving stability or low-temperature characteristics, a method of manufacturing the same, and a battery are provided. A cathode () includes a cathode active material including a lithium complex oxide including Li and at least one kind selected from the group consisting of Co, Ni and Mn, and P and at least one kind selected from the group consisting of Ni, Co, Mn, Fe, Al, Mg and Zn as coating elements on a surface of the lithium complex oxide. Preferably, the contents of the coating elements are higher on the surface of the cathode active material than those in the interior thereof, and decrease from the surface to the interior.

Cathode active material, method of manufacturing the same and battery

A cathode active material capable of increasing a capacity and improving high temperature characteristics or cycle characteristics, a method of manufacturing it, a cathode using the cathode active material, and a battery using the cathode active material are provided. In a cathode active material contained in a cathode, a coating layer is provided on at least part of complex oxide particle containing at least lithium (Li) and cobalt (Co). The coating layer is an oxide which contains lithium (Li) and at least one of nickel (Ni) and manganese (Mn).

Cathode active material, method of manufacturing it, cathode, and battery

A cathode active material is provided. The cathode active material includes: a composite oxide particle including at least lithium and cobalt; a coating layer which is provided in at least a part of the composite oxide particle and includes an oxide including lithium and a coating element of at least one of nickel and manganese; and a surface layer which is provided in at least a part of the coating layer and includes at least one element selected from the group consisting of silicon, tin, phosphorus, magnesium, boron, zinc, tungsten, aluminum, titanium, and zirconium.

Cathode active material, its manufacturing method, and non-aqueous electrolyte secondary battery

A positive electrode for a nonaqueous electrolyte battery includes a collector, and a positive electrode active material layer. The positive electrode active material layer includes a positive electrode active material, and also includes a heteropoly acid and/or heteropoly acid compound and phosphorous acid as additives.

Positive electrode with heteropoly and phosphorous additives and nonaqueous electrolyte battery

A positive electrode active material includes: a secondary particle obtained upon aggregation of a primary particle that is a lithium complex oxide particle in which at least nickel (Ni) and cobalt (Co) are solid-solved as transition metals, wherein an average composition of the whole of the secondary particle is represented by the following formula (1):LiCoNiMOX&#x2003;&#x2003;Formula (1)wherein an existent amount of cobalt (Co) becomes large from a center of the primary particle toward the surface thereof; and an existent amount of cobalt (Co) in the primary particle existing in the vicinity of the surface of the secondary particle is larger than an existent amount of cobalt (Co) in the primary particle existing in the vicinity of the center of the secondary particle.

Positive electrode active material, nonaqueous electrolyte battery and method for manufacturing positive electrode active material

A positive electrode active material includes a lithium complex oxide particle, and a coating layer formed on at least a part of the surface of the lithium complex oxide particle. The lithium complex oxide particle is a lithium complex oxide particle composed mainly of nickel. The coating layer contains an oxo acid and/or an oxo acid compound, an acidity of the surface of the lithium complex oxide particle composed mainly of nickel is increased by the coating layer. The acidity is determined based on a pH of a supernatant of water in a state where after 1.0 part by weight of the lithium complex oxide particle composed mainly of nickel and having a coating layer formed thereon is dispersed in 50 parts by weight of water. The lithium complex oxide particle sediments, and the pH is less than 8.0.

Positive electrode active material, method for manufacturing positive electrode active material and nonaqueous electrolyte battery

A method of manufacturing a cathode active material is provided. The method includes the step of precipitating step for providing a solution of a deposition component onto composite oxide particles including lithium Li and nickel Ni, removing a solvent from the solution on the composite oxide particles within a short time period, and precipitating the deposition component on surfaces of the composite oxide particles; and heating step for heating under an oxidation atmosphere the composite oxide particles with the deposition component precipitated on the surfaces.

Method of manufacturing cathode active material

A cathode active material has: a lithium composite oxide which contains the highest proportion of nickel among constituent metal elements except lithium; and a phosphorus compound which is contained near the surface of the lithium composite oxide, and a cathode including the cathode active material.

Cathode active material, cathode, and nonaqueous electrolyte battery

A cathode active material capable of increasing a capacity and improving high temperature characteristics or cycle characteristics, a method of manufacturing it, a cathode using the cathode active material, and a battery using the cathode active material are provided. In a cathode active material contained in a cathode, a coating layer is provided on at least part of a complex oxide particle containing at least lithium (Li) and cobalt (Co). The coating layer is an oxide which contains lithium (Li) and at least one of nickel (Ni) and manganese (Mn).

A cathode active material has: a lithium composite oxide which contains the highest proportion of nickel among constituent metal elements except lithium; and a phosphorus compound which is contained near the surface of the lithium composite oxide, a cathode including the cathode active material, and a method for manufacturing the cathode.

Cathode active material, cathode, nonaqueous electrolyte battery, and method for manufacturing cathode

A cathode active material capable of improving chemical stability, a method for producing the same, and a nonaqueous electrolyte secondary battery using the same which has high capacity and good charge-discharge cycling characteristics is provided. The cathode has a cathode active material. The cathode active material includes a coating layer formed on at least a part of the composite oxide particle, the coating layer including an oxide including lithium and an oxide including a coating element of nickel, or nickel and manganese, and a surface layer formed on at least a part of the coating layer and containing molybdenum.

Cathode active material, method for producing the same, and nonaqueous electrolyte secondary battery

A cathode active material capable of further improving chemical stability, a method of manufacturing the cathode active material, and a battery using the cathode active material are provided. The cathode includes a cathode active material in which a coating layer made of a compound including Li, at least one selected from Ni and Mg, and O is arranged on complex oxide particles represented by LiCoMO, where M is at least one kind selected from the group consisting of Mg, Al, B, Ti, V, Cr, Mn, Fe, Ni, Cu, Zn, Mo, Sn, W, Zr, Y, Nb, Ca and Sr, and the values of x, y and z are within a range of &#x2212;0.10&#x2266;x&#x2266;0.10, 0&#x2266;y&#x3c;0.50 and &#x2212;0.10&#x2266;z&#x2266;0.20, respectively. A surface layer made of an oxide including at least one kind selected from the group consisting of Ti, Si, Mg and Zr is formed on the coating layer.

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Fukushima, Japan

Tomoyo Ooyama