Positive electrode active material for lithium ion battery, positive electrode for lithium ion battery and lithium ion battery
US-9118076-B2 · Aug 25, 2015 · US
Method for producing positive electrode active material for lithium ion battery and positive electrode active material for lithium ion battery
US9327996B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9327996-B2 |
| Application number | US-201113581423-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 24, 2011 |
| Priority date | Jan 21, 2011 |
| Publication date | May 3, 2016 |
| Grant date | May 3, 2016 |
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Abstract
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The present invention provides a method for producing a positive electrode active material for lithium ion battery, having excellent tap density, at excellent production efficiency, and a positive electrode active material for lithium ion battery. The method for producing a positive electrode active material for lithium ion battery including a step of conducting a main firing after increasing mass percent of all metals in lithium-containing carbonate by 1% to 105% compared to the mass percent of all metals before a preliminary firing, by conducting the step of a preliminary firing to the lithium-containing carbonate, which is a precursor for positive electrode active material for lithium ion battery, with a rotary kiln.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for producing a positive electrode active material for lithium ion battery comprising: conducting a preliminary firing of a precursor containing lithium-containing carbonate, which is a precursor for positive electrode active material for lithium ion battery, with a rotary kiln, to generate a preliminary fired material, wherein the preliminary firing increases mass percent of all metals in the precursor containing lithium-containing carbonate by 50% to 97% compared to the mass percent of all metals before the preliminary firing; and conducting a main firing of only the preliminary fired material. 2. The method for producing a positive electrode active material for lithium ion battery of claim 1 , wherein the positive electrode active material is represented by a compositional formula: Li x Ni 1−y M y O 2+α (In the formula, M is one or more kinds selected from Sc, Ti, V, Cr, Mn, Fe, Co, Cu, Zn, Ga, Ge, Al, Bi, Sn, Mg, Ca, B and Zr, 0.9≦x≦1.2, 0<y≦0.7, and 0.05≦α). 3. The method for producing a positive electrode active material for lithium ion battery of claim 2 , wherein M is one or more kinds selected from Mn and Co.
Assignees
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Classifications
Powder tap density · CPC title
of manganese · CPC title
Electric properties · CPC title
Compounds of nickel · CPC title
containing alkaline earth metals, e.g. SrNiO3 or SrNiO2 · CPC title
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- What does patent US9327996B2 cover?
- The present invention provides a method for producing a positive electrode active material for lithium ion battery, having excellent tap density, at excellent production efficiency, and a positive electrode active material for lithium ion battery. The method for producing a positive electrode active material for lithium ion battery including a step of conducting a main firing after increasing m…
- Who is the assignee on this patent?
- Kawahashi Yasuhiro, Kajiya Yoshio, Jx Nippon Mining & Metals Corp
- What technology area does this patent fall under?
- Primary CPC classification H01M4/1391. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue May 03 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).