摘要:
An object of the present invention is to provide a copper foil excellent in softening resistance performance which reduces decrease in tensile strength after heat treatment at about 350° C. to 400° C. In order to achieve the object, a surface-treated copper foil provided with a rust-proofing treatment layer on both surfaces of a copper foil in which a rust-proofing treatment layer is constituted by zinc alloy, and the either rust-proofing treatment layer is a zinc alloy layer having zinc amount of 20 mg/m2 to 1,000 mg/m2; and the copper foil contains one or two or more of small amount elements selected from carbon, sulfur, chlorine and nitrogen, and a sum amount thereof is 100 ppm or more is adopted.
摘要翻译:本发明的目的是提供一种耐软化性能优异的铜箔,其在约350℃〜400℃下热处理后的抗拉强度降低。为了达到上述目的,将表面处理铜箔 在由铜合金构成的防锈处理层的铜箔的两面上设有防锈处理层,防锈处理层为锌量为20mg / m 2的锌合金层 至1,000 mg / m2; 铜箔含有一种或两种以上选自碳,硫,氯和氮的少量元素,其总量为100ppm以上。
摘要:
An object of the present invention is to provide a copper foil excellent in softening resistance performance which reduces decrease in tensile strength after heat treatment at about 350° C. to 400° C. In order to achieve the object, a surface-treated copper foil provided with a rust-proofing treatment layer on both surfaces of a copper foil in which a rust-proofing treatment layer is constituted by zinc alloy, and the either rust-proofing treatment layer is a zinc alloy layer having zinc amount of 20 mg/m2 to 1,000 mg/m2; and the copper foil contains one or two or more of small amount elements selected from carbon, sulfur, chlorine and nitrogen, and a sum amount thereof is 100 ppm or more is adopted.
摘要翻译:本发明的目的是提供一种耐软化性能优异的铜箔,其在约350℃〜400℃下热处理后的抗拉强度降低。为了达到上述目的,将表面处理铜箔 在由铜合金构成的防锈处理层的铜箔的两面上设有防锈处理层,防锈处理层为锌量为20mg / m 2的锌合金层 至1,000 mg / m2; 铜箔含有一种或两种以上选自碳,硫,氯和氮的少量元素,其总量为100ppm以上。
摘要:
An object of the present invention is to provide a copper foil excellent in softening resistance performance which reduces decrease in tensile strength after heat treatment at about 350° C. to 400° C. In order to achieve the object, a surface-treated copper foil provided with a rust-proofing treatment layer on both surfaces of a copper foil in which a rust-proofing treatment layer is constituted by zinc, and the either rust-proofing treatment layer is a zinc layer having zinc amount of 20 mg/m2 to 1,000 mg/m2; and the copper foil contains one or two or more of small amount elements selected from carbon, sulfur, chlorine and nitrogen, and a sum amount thereof is 100 ppm or more is adopted.
摘要翻译:本发明的目的是提供一种耐软化性能优异的铜箔,其在约350℃〜400℃下热处理后的抗拉强度降低。为了达到上述目的,将表面处理铜箔 在由铜构成的防锈处理层的铜箔的两面上设有防锈处理层,任一防锈处理层为锌量为20mg / m 2〜1000的锌层 mg / m2; 铜箔含有一种或两种以上选自碳,硫,氯和氮的少量元素,其总量为100ppm以上。
摘要:
A copper foil for a negative electrode current collector of a lithium ion secondary battery enables prevention of deformation of the current collector even if the charge/discharge operation is repeatedly carried out. In a copper foil for a negative electrode current collector of a lithium ion secondary battery, a 10 mm wide test specimen composed of the copper foil is subjected to a tensile test, a maximum strain loaded on the copper foil is 30 N or higher in a region where “Value L” represented by the following expression is 0.8 or more in a strain-stress curve obtained in the tensile test where O is the starting point of the curve, PQ is the load at a point Q on the curve and EQ is an elongation at a point Q on the curve Value L = ( area of triangle OQE Q ) ( area of region OQE Q ) … ( 1 )
摘要:
An object of the present invention is to provide a method for preparing a sulfuric acid base copper electrolytic solution used for formation of an electro-deposited copper film comprising a surface excellent in smoothness and gloss when formed by using the solution just after preparation and is prepared by using mono-sulfides. To achieve the object, a sulfuric acid base copper electrolytic solution is made to contain a sulfonated active sulfur compound, the bis(3-sulfopropyl)disulfide which is recommended for formation of a glossy electro-deposited copper film. And the bis(3-sulfopropyl)disulfide contained is obtained by converting a 3-mercapto-1-propanesulfonic acid into the bis(3-sulfopropyl)disulfide in an aqueous solution of the 3-mercapto-1-propanesulfonic acid by an oxidation reaction. In the oxidation reaction, an air bubbling method is preferably used to prevent oxidative decomposition of the 3-mercapto-1-propanesulfonic acid.
摘要:
An object of the present invention is to provide a method for preparing a sulfuric acid base copper electrolytic solution used for formation of an electro-deposited copper film comprising a surface excellent in smoothness and gloss when formed by using the solution just after preparation and is prepared by using mono-sulfides. To achieve the object, a sulfuric acid base copper electrolytic solution is made to contain a sulfonated active sulfur compound, the bis(3-sulfopropyl)disulfide which is recommended for formation of a glossy electro-deposited copper film. And the bis(3-sulfopropyl)disulfide contained is obtained by converting a 3-mercapto-1-propanesulfonic acid into the bis(3-sulfopropyl)disulfide in an aqueous solution of the 3-mercapto-1-propanesulfonic acid by an oxidation reaction. In the oxidation reaction, an air bubbling method is preferably used to prevent oxidative decomposition of the 3-mercapto-1-propanesulfonic acid.
摘要:
An object of the present invention is to provide a production method which enables efficient production of an electro-deposited copper foil with further lower profile when compared to the low-profile electro-deposited copper foils which have been supplied to the market and is excellent in mechanical strength. For the purpose of achieving the object, a production method adopted obtains the electro-deposited copper foil by electrolyzing a sulfuric acid based copper electrolytic solution which contains a quaternary ammonium salt polymer having cyclic structure and chlorine, wherein for the quaternary ammonium salt polymer contained in the sulfuric acid based copper electrolytic solution, a DDAC dimer or higher polymer is used. For the quaternary ammonium salt polymer, a diallyl dimethyl ammonium chloride polymer having a number average molecular weight of 300 to 10000 is preferably used. The sulfuric acid based copper electrolytic solution preferably contains bis(3-sulfopropyl) disulfide or 3-mercapto-1-propanesulfonic acid that is a compound having a mercapto group.
摘要:
In manufacturing of a negative electrode material of a lithium ion secondary battery provided with a negative electrode mixture layer including a negative electrode active substance on a surface of a negative electrode current collector, one or mixture selected from granular materials alloyable with lithium and carbon materials for storing and releasing lithium is used as the negative electrode active substance; manufacturing method of a negative electrode material for a lithium ion secondary battery employed is characterized in that an electro-deposited copper foil in which a surface roughness (Ra) is 0.20 μm
摘要:
An object of the present invention is to eliminate deviation in the quality of a chromate film provided on a copper foil for a negative electrode current collector to eliminate fluctuation of electric capacity in a lithium ion secondary battery.To achieve the object, as the copper foil for a negative electrode current collector of a lithium ion secondary battery, a copper foil provided with a chromate film for a negative electrode current collector in which Cr(OH)3 constitutes 85 area % or more of the chromate film is employed. Further, the copper foil provided with a chromate film for a negative electrode current collector according to the present application is preferable to be that the apparent orientation number N of oxygen closest to chrome in the chromate film is 4.5 or more.
摘要:
An object of the present invention is to provide a method for manufacturing a copper foil for a negative electrode current collector (specifically, copper foil for a negative electrode current collector of a lithium ion secondary battery) more excellent in discoloration resistance to improve charge/discharge cycle life of a secondary battery. To achieve the object, a method for manufacturing a copper foil for a negative electrode current collector of a secondary battery subjecting the copper foil to rust-proofing treatment, the method characterized in that the copper foil is rust-proofing treated with a chromate-treatment solution having pH in the range from 3.5 to 7.0 to form a chromate film on the surface of the copper foil is employed.