Positive electrode plate for nonaqueous battery, electrode group for nonaqueous battery and method for producing same, and rectangular nonaqueous secondary battery and method for manufacturing same

A non-aqueous battery, positive plate technology, applied in the manufacture of secondary batteries, non-aqueous electrolyte battery electrodes, large-sized batteries/batteries, etc., can solve the problems of rounding, application of electrode plates, etc. Improve permeability and improve insulation effect

Inactive Publication Date: 2011-04-13
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Furthermore, since the groove is formed on only one side, stress is applied to the electrode plate, and there is a problem that the side without the groove tends to be rounded.

Method used

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  • Positive electrode plate for nonaqueous battery, electrode group for nonaqueous battery and method for producing same, and rectangular nonaqueous secondary battery and method for manufacturing same
  • Positive electrode plate for nonaqueous battery, electrode group for nonaqueous battery and method for producing same, and rectangular nonaqueous secondary battery and method for manufacturing same
  • Positive electrode plate for nonaqueous battery, electrode group for nonaqueous battery and method for producing same, and rectangular nonaqueous secondary battery and method for manufacturing same

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Embodiment 1

[0108] LiNi 8 co 0.1 al 0.05 o 2 The lithium-nickel composite oxide indicated is used as the positive electrode active material. in NiSO 4 Sulfuric acid with a predetermined ratio of Co and Al was added to the aqueous solution to prepare a saturated aqueous solution. While stirring the saturated aqueous solution, an alkaline solution in which sodium hydroxide is dissolved is slowly dropped, and the ternary nickel hydroxide Ni is precipitated by neutralization. 0.8 co 0.15 al 0.05 (OH) 2 . The precipitate was filtered, washed with water, and dried at 80°C. The average particle diameter of the obtained nickel hydroxide was about 10 μm.

[0109] Then, lithium hydroxide hydrate was added so that the ratio of the sum of the atomic numbers of Ni, Co, and Al to the atomic number of Li was 1:1.03, and heat treatment was performed in an oxygen atmosphere at 800° C. for 10 hours to obtain the target product: LiNi 0.8 co 0.15 al 0.05 o 2 . It was confirmed by powder X-ray...

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Abstract

Disclosed is a positive electrode plate (2) which comprises: a double side coated part (14) in which an active material layer (13) and a porous protective film (28) are formed on the both surfaces of a collector core material (12); a core material exposed part (18); and a single side coated part (17) which is positioned between the double side coated part (14) and the core material exposed part (18) and in which the active material layer (13) and the porous protective film (28) are formed on one surface of the collector core material (12). The double side coated part (14) is provided with a plurality of grooves (10), but the single side coated part (17) is not provided with a groove (10). The grooves (10) are so formed as to extend from the surface of the porous protective film (28) to the surface of the active material layer (13). A collector lead (20) of the positive electrode is connected to the core material exposed part (18), and the positive electrode plate (2) is rolled up in such a manner that the core material exposed part (18) makes the roll end.

Description

technical field [0001] The present invention mainly relates to a positive electrode plate for a non-aqueous battery, an electrode group including the positive electrode plate, a manufacturing method thereof, a prismatic non-aqueous secondary battery including the electrode group, and a manufacturing method thereof. Background technique [0002] In recent years, lithium secondary batteries, which are widely used as driving power sources for portable electronic devices and communication devices, generally use carbonaceous materials that can intercalate / deintercalate lithium in the negative plate, and use LiCoO in the positive plate. 2 A complex oxide of a transition metal such as lithium and lithium is used as an active material, thereby forming a secondary battery with high potential and high discharge capacity. Furthermore, with the multifunctionalization of electronic equipment and communication equipment, further increase in capacity is desired. [0003] In order to reali...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/02H01M2/26H01M10/40H01M4/13H01M10/0566H01M10/0583H01M10/0587H01M50/103H01M50/586H01M50/627
CPCY02E60/122H01M2/34H01M2/1673H01M2/361H01M4/131H01M2004/021H01M10/0587H01M4/1391H01M4/525H01M10/0525H01M2/0217H01M4/133H01M4/80H01M4/1393H01M2004/025H01M10/4235H01M2/0207H01M4/0435H01M4/139Y10T29/49108Y02E60/10H01M50/103H01M50/46Y02P70/50B30B11/18H01M50/586H01M50/627H01M10/0583H01M4/13H01M10/0431H01M50/491H01M50/538H01M50/431H01M4/04
Inventor 宫久正春加藤诚一山下真央
Owner PANASONIC CORP
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