Lead-acid Battery Negative Research On The Effects Of Additives On The Battery Performance

Recently the haze weather has become an inevitable question in daily life, thecurrent energy crisis and environmental pollution have become increasingly serious.Strengthening environmental protection and reducing pollution has become particularlyimportant in the current issue. With respect to the primary energy, secondary energywith the features of less pollution and easy use, therefore, has an important role inmodern society. Lead-acid batteries have the advantage of cost-effective, safe and stableperformance advantages compared with other chemical powers like lithium battery andfuel. Lead-acid batteries can be used for a variety of vehicles, and it can play the role ofenergy saving and reducing exhaust emissions. However, with the continuousdevelopment of technology and emerging battery industry, the requirements forlead-acid battery performance are enhancing, particularly, the higher requirement ofinitial capacity and low temperature performance and so on. The main problems in theseareas are closely related to the performance of negative plates of lead-acid batteries.So this paper made explorations in two aspects: On the one hand, use the carbonnanotubes to replace negative acetylene black in lead-acid battery. On the other hand,replace the negative lignin with nitrogen anthracene blue, and respectively makephysical characterization and electrochemical tests. According to the results, we canmeasure the specific impact of these two negative additives on the performance oflead-acid batteries.The No.6DZM-12were assembled by hand-made way and cream coated platesaccording to the factory production process. The specific morphology of the negativeadditives and the negative raw plate were observed by scanning electron microscopeand X-ray diffraction. The effects of additives on the performance of the battery wereexamined by electrochemical tests on the battery capacity, and low-temperatureperformance.Experimental results on the additive of carbon nanotubes showed that carbonnanotubes with different types could improve battery performance, wherein TNM2nanotube has the most superior performance among three nanotubes (TNM2, TNM5, TNM8), and it is recommended that the top addition volume is3‰, in which case theinitial battery capacity, low temperature-15℃capacity, and high current3C dischargetime are respectively increased6.2%,15.3%, and13%; the capacity retention rate ofbattery can be up to92.4%. Meanwhile the other two TNM5, TNM8carbon nanotubeswere also tested; the results showed: the optimal (best) dosage for TNM5and TNM8carbon nanotubes is2‰and4%, respectively.The experimental results on nitrogen anthracene blue additive showed thatdifferent levels of nitrogen anthracene blue can improve battery performance indifferent degrees. In order to take the performance of the battery into account, theoptimal dosage for nitrogen anthracene blue should be3‰.-15℃low temperaturecapacity of battery can be increased by29.2%when the dosage is3‰, and the initialbattery capacity and high current performance are both improved more thanconventional batteries, therefore, the3‰addition is recomended as a reference value.On the whole, these two negative additives can play a positive impact on theoverall performance of the battery, and the optimal dosage is also within the scope ofconventional dosage, therefore it can be used as a reference value in industryproduction.