Acid-free storage battery taking lead as negative electrode

An acid battery and negative electrode technology, applied in the field of electrochemistry, can solve the problems of lead-acid battery pollution, poor safety performance of ammonium salt lead battery, high production cost, etc., and achieve the effects of excellent performance, excellent cycle performance, and good rate performance

Active Publication Date: 2014-11-19
长兴诺力电源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an acid-free storage battery with lead as the negative electrode, to overcome

Method used

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  • Acid-free storage battery taking lead as negative electrode
  • Acid-free storage battery taking lead as negative electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Metal lead is used as the negative electrode, and the active material of the positive electrode is LiMn 2 o 4 (75wt.%), PTFE as a binder (10wt.%), acetylene black as a conductive agent (15wt.%), mixed evenly, coated on a nickel grid, and then dried and immersed in 0.5 M Li with a pH of 7 2 SO 4 In the electrolyte composed of, so as to obtain lead as the negative electrode, LiMn 2 o 4 Lead charge and discharge battery for the positive electrode. The test was carried out with a current of 400 mA / g, and the charging was carried out at a constant current of 400 mA / g, charged to 1.8V, and then discharged at a constant current of 400 mA / g. After 50 cycles of activation, the capacity fades by 11% after 110 cycles. For the sake of comparison, these data are also summarized in Table 1.

Embodiment 2

[0026] In addition to changing the positive active material to K 0.3 MnO 2 , 0.5 M Li in the electrolyte 2 SO 4 Change to 2M KNO 3 Outside, other conditions are all identical with to embodiment 1, obtain taking lead as negative pole, K 0.3 MnO 2 positive battery. The test conditions are also the same as in Example 1. According to the test results, the same capacity fading of 12% after 50 activation cycles and 110 cycles was obtained. For the sake of comparison, these data are also summarized in Table 1.

Embodiment 3

[0028] In addition to changing the positive active material to NaFePO 4 , 0.5 M Li in the electrolyte 2 SO 4 Change to 1 M NaCl, negative electrode material is - calcium alloy (mass ratio is 98:2), other preparation conditions are all the same as to embodiment 1, obtain taking lead as negative electrode, NaFePO 4 positive battery. The test conditions are also the same as in Example 1. According to the test results, the capacity decay of 14% was also obtained after 50 activations and 110 cycles. For the sake of comparison, these data are also summarized in Table 1.

[0029] Table 1 The energy density of the above comparative examples and examples (according to the quality of the electrode active material)

[0030]

[0031] It can be seen from Table 1 that the capacity fading of the embodiment is less, and because the neutral electrolyte is less polluted than the acid electrolyte, the battery of the embodiment is safer and more reliable, and has good application value.

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Abstract

The invention belongs to the technical field of electrochemistry, and in particular relates to an acid-free storage battery taking lead as a negative electrode. The negative electrode of the acid-free storage battery is metal lead or an alloy of the lead or other modified objects; an electrolyte is an aqueous solution of common alkali metal ions or hydrogel; a common positive electrode material is a compound or a dopant thereof, a coating-type compound and a mixture in which the alkali metal ions can generate reversible intercalation. The acid-free storage battery taking the lead as the negative electrode is extremely high in safety and rate capability, and can be widely applied in storage and release of electric power.

Description

technical field [0001] The invention belongs to the technical field of electrochemistry, and in particular relates to an acid-free storage battery with lead as the negative pole, and also relates to the application of the acid-free storage battery. Background technique [0002] While lead-acid batteries bring convenience to human life, they also bring serious environmental pollution problems. Lead-acid batteries produce a large amount of lead-containing acid-containing wastewater and solid lead waste in the process of production and recycling, which have a significant impact on the environment and human health. In order to solve these problems, Shaanxi Zhonghe Lvneng Power Technology Co., Ltd. proposed an acid-free ammonium salt lead-acid battery, that is, without changing the electrode structure of the original lead-acid battery, the battery is replaced by PbO 2 As the positive electrode and the spongy Pb as the negative electrode, a compound salt solution (40-60% ammonium...

Claims

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Application Information

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IPC IPC(8): H01M10/36
CPCH01M10/20H01M10/22Y02E60/10
Inventor 刘昱温祖标吴宇平
Owner 长兴诺力电源有限公司
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