Nichia Corporation

Toyota Jidosha Kabushiki Kaisha

Masato Sonoo

Hideki Yoshida

Takahiro Kitagawa

Hajime Hasegawa

Keisuke Omori

Masato Hozumi

Takumi Tanaka

Masashi Kodama

Yuuki Maeda

A method for producing a nickel cobalt complex hydroxide includes first crystallization of supplying a solution containing Ni, Co and Mn, a complex ion forming agent and a basic solution separately and simultaneously to one reaction vessel to obtain nickel cobalt complex hydroxide particles, and a second crystallization of, after the first crystallization, further supplying a solution containing nickel, cobalt, and manganese, a solution of a complex ion forming agent, a basic solution, and a solution containing said element M separately and simultaneously to the reaction vessel to crystallize a complex hydroxide particles containing nickel, cobalt, manganese and said element M on the nickel cobalt complex hydroxide particles crystallizing a complex hydroxide particles comprising Ni, Co, Mn and the element M on the nickel cobalt complex hydroxide particles.

Positive electrode active material for non-aqueous electrolyte secondary battery comprising lithium transition metal complex oxide, and non-aqueous electrolyte secondary battery

A cathode active material with high durability and a lithium ion secondary battery. The cathode active material is a cathode active material represented by a general formula LiNiCoMnWO(&#x2212;0.05&#x2264;a&#x2264;0.2, x=1&#x2212;y&#x2212;z&#x2212;t, 0&#x2264;y&#x3c;1, 0&#x2264;t&#x3c;1, 0&#x3c;t&#x2264;0.03), wherein the cathode active material satisfies the following formula (1):&#x3c3;1/1&#x2264;0.92&#x2003;&#x2003;(1)where t1 is an element concentration average of insides and grain boundaries of primary particles of a W element, and &#x3c3;1 is an element concentration standard deviation of the insides and grain boundaries of the primary particles of the W element.

Cathode active material and lithium ion secondary battery comprising the same

Nickel cobalt complex hydroxide particles and method for producing the same, positive electrode active material for non-aqueous electrolyte secondary battery and method for producing the same, and non-aqueous electrolyte secondary battery

A method of producing a nickel-cobalt composite hydroxide includes: preparing a first solution containing nickel ions and cobalt ions; preparing a second solution containing tungsten ions and having a pH of 10 or more; preparing a third solution containing a complex ion-forming factor; preparing a liquid medium having a pH in a range of 10 to 13.5; supplying the first solution, the second solution, and the third solution separately and simultaneously to the liquid medium to obtain a reacted solution having a pH in a range of 10 to 13.5; and obtaining the nickel-cobalt composite hydroxide containing nickel, cobalt, and tungsten from the reacted solution.

Method of producing nickel-cobalt composite hydroxide and method of producing positive electrode active material for non-aqueous electrolyte secondary battery

A method for producing a nickel cobalt complex hydroxide includes first crystallization of supplying a solution containing Ni, Co and Mn, a complex ion forming agent and a basic solution separately and simultaneously to one reaction vessel to obtain nickel cobalt complex hydroxide particles, and a second crystallization of, after the first crystallization, further supplying a solution containing nickel, cobalt, and manganese, a solution of a complex ion forming agent, a basic solution, and a solution containing said element M separately and simultaneously to the reaction vessel to crystallize a complex hydroxide particles containing nickel, cobalt, manganese and said element M on the nickel cobalt complex hydroxide particles crystallizing a complex hydroxide particles comprising Ni, Co, Mn and the element Mon the nickel cobalt complex hydroxide particles.

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Komatsushima, Japan

Masato Sonoo