Process for producing negative plate for lead storage battery, and lead storage battery
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01M-002/04
H01M-004/20
H01M-004/22
H01M-004/36
H01M-004/62
H01M-004/04
H01M-004/02
H01M-010/06
출원번호
US-0265944
(2010-03-19)
등록번호
US-9450232
(2016-09-20)
우선권정보
JP-2009-104825 (2009-04-23)
국제출원번호
PCT/JP2010/055479
(2010-03-19)
§371/§102 date
20111222
(20111222)
국제공개번호
WO2010/122873
(2010-10-28)
발명자
/ 주소
Furukawa, Jun
Momma, Daisuke
Takada, Toshimichi
Lam, Trieu Lan
Louey, Rosalie
Haigh, Peter Nigel
출원인 / 주소
COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION
대리인 / 주소
Nixon & Vanderhye P.C.
인용정보
피인용 횟수 :
0인용 특허 :
107
초록▼
To provide a method for producing a lead-acid battery negative plate for use in a storage battery which provides improved deteriorated rapid discharge characteristics by preventing an interfacial separation between a negative active material-filled plate and a carbon mixture-coated layer, which is a
To provide a method for producing a lead-acid battery negative plate for use in a storage battery which provides improved deteriorated rapid discharge characteristics by preventing an interfacial separation between a negative active material-filled plate and a carbon mixture-coated layer, which is a problem in a negative plate having such a configuration that the carbon mixture coated layer is formed on the surface of the negative active material-filled plate. A coating layer of a carbon mixture is formed at least in a part of a surface of a negative active material-filled plate. The carbon mixture is prepared by mixing two kinds of carbon materials consisting of a first carbon material having conductive properties and a second carbon material having capacitive capacitance and/or pseudo capacitive capacitance and a binding agent. Subsequently, a sufficient amount of lead ions are generated enough to be moved from the negative active material-filled plate into the carbon mixture-coated layer. Thereafter, a formation treatment or an initial charge treatment is performed to precipitate lead so that the carbon mixture-coated layer and the negative plate are connected and integrated, at least in a part of a respective interfacial surface thereof, by the precipitated lead.
대표청구항▼
1. A method for producing a negative plate for use in a lead-acid battery, comprising the steps of: forming a coating layer of a carbon mixture at least in a part of a surface of a negative active material-filled plate, the carbon mixture being prepared by mixing two kinds of carbon materials consis
1. A method for producing a negative plate for use in a lead-acid battery, comprising the steps of: forming a coating layer of a carbon mixture at least in a part of a surface of a negative active material-filled plate, the carbon mixture being prepared by mixing two kinds of carbon materials consisting of a first carbon material having conductive properties and a second carbon material having capacitive capacitance and/or pseudo capacitive capacitance and a binding agent;(i) performing, before an initial charge treatment, a soaking treatment of the plate in an electrolyte solution for at least about one hour after the electrolyte solution is poured or impregnated into the plate, to generate lead ions in an amount sufficient to enable movement of lead ions from the negative active material in the negative plate into the carbon mixture-coated layer; and(ii) performing the initial charge treatment to precipitate lead so that the carbon mixture-coated layer and the negative active material-filled plate are connected and integrated by the precipitated lead at the region of the interface between the carbon mixture-coated layer and the negative active material-filled plate. 2. A negative plate or a lead-acid battery comprising the negative plate obtainable or produced according to claim 1. 3. The method of claim 1, wherein the step of forming the coating layer of the carbon mixture comprises an air drying step such that porosity is introduced into the coating layer and the negative active material is at least partially oxidised. 4. The method of claim 1, wherein the soaking treatment of step i) is carried out for about one hour. 5. The method of claim 1, wherein the carbon mixture is provided in an amount of 1-15 parts per 100 parts of active battery material. 6. The method of claim 1, wherein the porosity of the coating layer of the carbon mixture is 40-90%. 7. The method of claim 1, wherein the composition of the carbon mixture comprises 5-70 parts by weight of the first carbon material, 20-80 parts by weight of the second carbon material, 1-20 parts by weight of a binding agent, 0-10 parts by weight of a thickening agent, 0-16 parts by weight of a short fibre reinforcing agent. 8. The method of claim 7, wherein the composition of the carbon mixture comprises 10-60 parts by weight of the first carbon material. 9. The method of claim 7, wherein the composition of the carbon mixture comprises 30-70 parts by weight of the second carbon material. 10. The method of claim 7, wherein the composition of the carbon mixture comprises 5-15 parts by weight of the binding agent. 11. The method of claim 7, wherein for the composition: the first carbon material is selected from at least one of carbon black, Ketjen black and graphite;the second carbon material is selected from at least one of activated carbon, carbon black and graphite;the binding agent is a polymer selected from at least one of polychloroprene, styrene-butadiene, polytetrafluoroethylene, and polyvinylidene fluoride;the thickening agent, when present, is selected from an aqueous paste agent or an organic paste agent;the short fibre reinforcing agent, when present, is selected from at least one of carbon, glass, polyethyleneterephthalate, and polytetrafluoroethylene. 12. The method of claim 7, wherein the reinforcing agent, when present, comprises fibres having a diameter of 20 μm or less and a length of between 0.1 to 4 mm. 13. The method of claim 1, wherein a discharging treatment is carried out prior to performance of the initial charge treatment. 14. The method of claim 1, wherein the discharging treatment of is carried out for about 30 hours.
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