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Lead powder electrochemical performance detection method based on small polar plate and test system therefor

A detection method and technology of a test system, applied in the field of electrochemistry, can solve the problems of poor stability of electrochemical test results, inability to explore the influence of battery lead paste performance, etc., to shorten the test cycle, improve the test efficiency, and shorten the process flow.

Active Publication Date: 2016-03-23
湖北金洋冶金股份有限公司 +1
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Problems solved by technology

However, this method can only test the performance of lead powder and the influence of impurities on lead powder, but cannot explore the influence of process parameters in the battery preparation process on the performance of lead paste. However, due to the small amount of lead powder, the stability of electrochemical test results is poor

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  • Lead powder electrochemical performance detection method based on small polar plate and test system therefor
  • Lead powder electrochemical performance detection method based on small polar plate and test system therefor
  • Lead powder electrochemical performance detection method based on small polar plate and test system therefor

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Embodiment Construction

[0021] figure 1 Among them, the present invention includes a counter electrode 2, a reference electrode 3, a working electrode 4, and an electrolytic cell 5. The electrolytic cell 5 is filled with electrolyte 6, and one end of the counter electrode 2, the reference electrode 3 and the working electrode 4 are inserted into the electrolytic cell. 5. The working electrode 4 is filled with an active material 7, which is the object to be tested, such as a lead paste active material prepared from lead powder to be evaluated. The counter electrode 2 adopts a single or double inert electrode (such as platinum electrode, gold electrode), and its surface area is smaller than that of the working electrode. The reference electrode 3 uses a mercury sulfate electrode. The detection cell is a sealable special three-necked flask or electrolytic cell for electrochemical detection. The three electrodes are placed in the electrolytic cell 5, and their spacing is fixed by the hole pitch of the el...

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Abstract

The invention, aiming to the limitation of a performance detection method on a battery active substance, lead powder, in lead-acid storage batteries in the prior art, discloses a lead powder electrochemical performance detection method based on a small polar plate and a test system therefor. The detection method includes the following steps: preparing a cured ripe polar plate with to-be-tested lead powder on the small polar plate; and connecting the ripe polar plate into a test system and selecting a test program. By means of the method, short-time and high-effective electrochemical detection information can be obtained. With the system, performance evaluation indices, such as charge capacity performance, cycle performance and the like, of the lead powder can be directly obtained without preparation of a battery finish product. The method is hopeful to be used for replacing a lead powder electrochemical performance detection device in which a battery finish product is required. The invention provides an effective method for researching a novel lead powder material, evaluating the electrochemical performance thereof, and evaluating the performance of the lead powder as an active substance on a polar plate of the lead-acid storage batteries.

Description

Technical field [0001] The invention belongs to electrochemical technology, and specifically relates to a method for detecting electrochemical performance of lead powder based on a small electrode plate. Background technique [0002] Lead-acid batteries have experienced more than 150 years of development since their invention, and they still occupy a dominant position in the secondary battery industry. At present, most domestic lead-acid battery manufacturers use lead powder as the active material of lead-acid batteries. Its composition is composed of 70% to 80% PbO and 20% to 30% free lead (Pb, PbO). 2 And Pb 3 O 4 ) Composition of the mixture. [0003] Since the application of lead-acid batteries predates the emergence of modern electrochemical detection methods, currently, existing methods generally produce finished batteries first, and then test their capacity and cycle indicators. This kind of method has a long process flow, the production process is easily disturbed, and the...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/416
CPCG01N27/416
Inventor 杨家宽李富元董金鑫张伟胡雨辰王俊雄王琴杨丹妮吴旭梁莎胡敬平王进周锋
Owner 湖北金洋冶金股份有限公司
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