A high-temperature heavy-duty start-stop battery negative lead paste and preparation method thereof

A battery negative electrode, heavy-duty technology, applied in the field of electrochemistry, can solve the problems of aggravated negative electrode self-discharge, difficult industrialization promotion, water loss, etc., and achieves the effects of strong charging acceptance, strong operability, and low interface impedance.

A battery negative electrode, heavy-duty technology, applied in the field of electrochemistry, can solve the problems of aggravated negative electrode self-discharge, difficult industrialization promotion, water loss, etc., and achieves the effects of strong charging acceptance, strong operability, and low interface impedance.

CN105702953BActive Publication Date: 2017-08-08湖北弘本能源有限公司
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  • A high-temperature heavy-duty start-stop battery negative lead paste and preparation method thereof
  • A high-temperature heavy-duty start-stop battery negative lead paste and preparation method thereof
  • A high-temperature heavy-duty start-stop battery negative lead paste and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A high-temperature heavy-duty start-stop battery negative lead paste consists of the following components by weight percentage:

[0036]Density ρ=1.38g / mL dilute sulfuric acid 7% (containing 1.1% anhydrous sodium sulfate), deionized water 10%, high-performance organic additive Expander1 0.1%, high-performance organic additive Expander20.1%, conductive polyester staple fiber 0.1 %, ultra-fine precipitated barium sulfate 0.5%, carbon material additive CarbonA with high specific surface area (BET) and high oil absorption value and the main particle size distribution is concentrated in 2-5μm 0.2%, the rest is lead powder with an oxidation degree of 65% 82% .

[0037] The above-mentioned high-temperature heavy-duty start-stop battery negative lead paste is prepared by the following steps, based on the production of 100kg of composite paste:

[0038] (1) Mechanically premix 0.1Kg of conductive polyester short fiber, 0.5Kg of barium sulfate, and 0.2Kg of Carbon A according to...

Embodiment 2

[0045] A high-temperature heavy-duty start-stop battery negative lead paste consists of the following components by weight percentage:

[0046] Density ρ=1.38g / mL 7.5% dilute sulfuric acid (containing 1.1% anhydrous sodium sulfate), 12% deionized water, 10.15% high-performance organic additive Expander, 20.2% high-performance organic additive Expander, conductive polyester staple fiber 0.15%, superfine precipitated barium sulfate 0.8%, high specific surface area (BET), high oil absorption value and carbon material additive CarbonA0.4% with the main particle size distribution concentrated in 2-5μm, the rest is lead powder with an oxidation degree of 70% 78.8 %.

[0047] The above-mentioned high-temperature heavy-duty start-stop battery negative lead paste is prepared by the following steps, based on the production of 100kg of composite paste:

[0048] (1) Mechanically premix 0.15Kg of conductive polyester short fiber, 0.8Kg of barium sulfate, and 0.4Kg of Carbon A in advance a...

Embodiment 3

[0055] A high-temperature heavy-duty start-stop battery negative lead paste consists of the following components by weight percentage:

[0056] Density ρ=1.38g / mL 7.5% dilute sulfuric acid (containing 1.2% anhydrous sodium sulfate), 10% deionized water, 10.2% high-performance organic additive Expander, 20.4% high-performance organic additive Expander, conductive polyester staple fiber 0.2%, superfine precipitated barium sulfate 1.0%, carbon material additive CarbonA with high specific surface area (BET) and high oil absorption value and the main particle size distribution is concentrated in 2-5μm CarbonA0.6%, the rest is lead powder with an oxidation degree of 80% 80.1 %.

[0057] The above-mentioned high-temperature heavy-duty start-stop battery negative lead paste is prepared by the following steps, based on the production of 100kg of composite paste:

[0058] (1) Mechanically premix 0.2Kg of conductive polyester short fiber, 1.0Kg of barium sulfate, and 0.6Kg of Carbon A a...

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Abstract

The invention relates to a high-temperature heavy-load negative lead paste for a start-stop battery and a preparation method of the negative lead paste, and belongs to the technical field of electrochemistry. The high-temperature heavy-load negative lead paste for the start-stop battery is prepared from the following components: dilute sulfuric acid with the density rho of 1.38g / mL, deionized water, a high-performance organic additive Expander 1, a high-performance organic additive Expander 2, a conductive polyester staple fiber, barium sulfate, a carbon material additive Carbon A and lead powder. The invention provides the high-temperature heavy-load negative lead paste for the start-stop battery with long service lifetime and deep discharge cycle performance under the partial state of charge and a preparation method of the negative lead paste. The negative electrode produced by the formula can significantly improve sulfation of the negative electrode under the partial state of charge, reduces the electrochemical polarization phenomenon of the battery in the high-temperature deep circulating charge and discharge processes, and improves the conductivity and the electrochemical property of the negative electrode and the thermodynamic structure stability, so that the high-temperature deep discharge cycle lifetime of the negative electrode under the partial state of charge is prolonged.

Description

technical field [0001] The invention belongs to the technical field of electrochemistry, and in particular relates to a high-temperature heavy-duty start-stop battery negative lead paste and a preparation method thereof. Background technique [0002] At present, the sealed maintenance-free start-stop lead-acid batteries mostly use Pb-Ca alloy as the grid, but when Pb-Ca alloy is used as the positive grid, under high temperature conditions, the corrosion and growth of the positive grid are serious; at the same time, the negative grid is generally used Traditional organic additives, and the current traditional organic additives generally use sodium lignosulfonate and humic acid with a high degree of sulfonation. Under high temperature conditions, they all have significant shortcomings such as insufficient thermal stability, resulting in the loss of lignin in the negative electrode at the end of the cycle life. Sodium sulfonate dissolves from the negative electrode into the ele...

Claims

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Application Information

Patent Timeline
08 Aug 2017
Publication
CN105702953B
IPC
H01M4/57; H01M4/62; H01M10/06
CPC
H01M4/57; H01M4/62; H01M10/06; Y02E60/10
Inventors
张兴; 张祖波