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Cathode active material, cathode and nonaqueous electrolyte battery

一种正极活性物质、正极的技术，应用在非水电解质蓄电池、活性物质电极、正电极等方向，能够解决很难生产具有平板型的电池、破裂或截断等问题，达到卷绕特性改进、气体产生抑制、改进循环特性的效果

Active Publication Date: 2015-07-08
MURATA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the electrode may be broken or cut off when the electrode is folded by winding or formed by pressing after winding, so it is difficult to produce a battery with a flat shape

Method used

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  • Cathode active material, cathode and nonaqueous electrolyte battery
  • Cathode active material, cathode and nonaqueous electrolyte battery
  • Cathode active material, cathode and nonaqueous electrolyte battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0158] will have the average composition as Co 0.20 Ni 0.77 al 0.03 (OH) 2 and composite hydroxide particles with an average particle diameter (average particle diameter) of 12 μm (determined by laser light scattering method) and commercially available lithium hydroxide LiOH-H 2 O is Li / (Co+Ni+M)=0.98 (where M is selected from boron B, magnesium Mg, aluminum Al, silicon Si, phosphorus P, sulfur S, titanium Ti, chromium Cr, manganese Mn, iron Fe, copper One or more of the group consisting of Cu, zinc Zn, gallium Ga, germanium Ge, yttrium Y, zirconium Zr, molybdenum Mo, silver Ag, barium Ba, tungsten W, indium In, tin Sn, lead Pb, and antimony Sb Elements) are mixed in molar ratios.

[0159] Based on the total weight of the mixed powder, commercially available phosphorous acid (H 3 PO 3 ) was added in an amount of 0.5 wt%, and fully stirred and mixed. The resulting product was placed in an electric furnace and heated to 470° C. in an oxygen atmosphere (at a rate of 2° C. / ...

Embodiment 2

[0161] The positive electrode in Example 2 was obtained in the same manner as described in Example 1, except that 0.15 Ni 0.80 al 0.05 (OH) 2 composite hydroxide particles.

Embodiment 3

[0163] The positive electrode in Example 3 was obtained in the same manner as described in Example 1, except that 0.15 Ni 0.80 mn 0.05 (OH) 2 composite hydroxide particles.

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Abstract

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.

Description

[0001] This application is a divisional application of a patent application with an application date of March 28, 2008, an application number of 200810088828.1, and an invention title of "positive electrode active material, positive electrode, non-aqueous electrolyte battery, and method for preparing positive electrode". Here for reference. technical field [0002] The present invention relates to a positive electrode active material, a positive electrode, a nonaqueous electrolyte battery, and a method for preparing the positive electrode. More specifically, it relates to a positive electrode active material including lithium composite oxide, a positive electrode, a nonaqueous electrolyte battery, and a method of producing a positive electrode for a nonaqueous electrolyte secondary battery. Background technique [0003] In recent years, portable devices such as video cameras and notebook computers have been widely used, and there is a strong demand for secondary batteries ha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/525H01M4/131H01M10/052H01M4/58
CPCH01M4/5825Y02E60/122H01M4/133H01M2004/028H01M10/0587H01M10/052H01M10/0525H01M4/36H01M4/525Y02E60/10Y10T29/49108Y10T29/49115
Inventor 大山有代竹田幸史相马正典中井秀树
Owner MURATA MFG CO LTD
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