Method for producing hybrid negative plate for lead-acid storage battery and lead-acid storage battery
First Claim
1. A method for producing a hybrid negative plate for a lead-acid storage battery comprising the steps of:
- (i) preparing a carbon mixture comprising a first carbon material having electroconductivity and a second carbon material having capacitor capacitance and/or pseudocapacitor capacitance, and a binder;
(ii) forming the carbon mixture into a sheet;
(iii) preparing a negative active material-filled plate comprising a current collector plate coated with negative active battery material;
(iv) applying said carbon mixture sheet prepared in step (ii) to the negative active material-filled plate of step (iii) when the plate is in a wet state to form a hybrid negative plate;
(v) roll pressing the hybrid negative plate formed in step (iv); and
(vi) after step (v), drying the hybrid negative plate.
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Accused Products
Abstract
There is provided a method for producing a hybrid negative plate for a lead-acid storage battery which is improved in the production working efficiency and the productivity and enhances the quick charge and discharge characteristics and the discharge characteristics at a low temperature under PSOC of a lead-acid storage battery.
A carbon mixture sheet produced by such a way that a carbon mixture prepared by mixing two types of carbon materials consisting of a first carbon material having electroconductivity and a second carbon material having capacitor capacitance and/or pseudocapacitor capacitance, and at least a binder, is adhered by pressure to the surface of a negative plate in a wet state, so that a hybrid negative plate is produced. The lead-acid storage battery provided with the hybrid negative plate is improved in the discharge characteristics.
191 Citations
20 Claims
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1. A method for producing a hybrid negative plate for a lead-acid storage battery comprising the steps of:
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(i) preparing a carbon mixture comprising a first carbon material having electroconductivity and a second carbon material having capacitor capacitance and/or pseudocapacitor capacitance, and a binder; (ii) forming the carbon mixture into a sheet; (iii) preparing a negative active material-filled plate comprising a current collector plate coated with negative active battery material; (iv) applying said carbon mixture sheet prepared in step (ii) to the negative active material-filled plate of step (iii) when the plate is in a wet state to form a hybrid negative plate; (v) roll pressing the hybrid negative plate formed in step (iv); and (vi) after step (v), drying the hybrid negative plate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification