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Sino Science&Technology Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of Lifepo4 batteries,energy storage battery,portable UPS power supply,personalized customization lithium battery pack etc .
Environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery,3.7V lithium polymer battery, NiMH battery , NiCD battery ,Lead acid battery,dry cell battery ,alkaline battery ,heavy duty battery, button cell battery etc. we devote to R&D,innovation ,production & sales
Shenzhen Green Power Energy Battery Co.,ltd specializes in a wide range of digital battery such as environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery, 3.7V lithium polymer battery, NiMH battery, NiCD battery, dry cell battery, alkaline battery, heavy duty battery, button cell battery etc. we devote to R&D, innovation, production & sales. With automatic production machines we have been exported goods to all over the world over 15years. We have complete exported certificate such as KC, CE, UL, BSCI, ROHS, BIS, SGS, PSE etc
Dongguan Datapower New Energy Co.,ltd is a high-tech production enterprise which specialize in the R&D and production&sale of lithium polymer batteries,drone battery,airplane batteries &battery pack etc.
Anhui Seong-hee New Energy Technology Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of primary batteries. And mainly produces and sells alkaline batteries & carbon zinc batteries. there are size AA, AAA, C, D, 9V etc
Guizhou STD Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production & sale of lithium polymer batteries, drone battery, airplane batteries & battery pack etc.
release time:2023-10-13 Hits: Popular:AG11 battery
Today, as people's awareness of environmental protection continues to increase, commonly used alkaline batteries have become low-mercury or even mercury-free. Among them, the selection of alloy gold powder is the main improvement measure for low-mercury alkaline batteries. To reduce mercury in the negative electrode of reactive batteries, first of all, the zinc powder alloy must meet the following conditions: (1) It is difficult to corrode in the reactive electrolyte; (2) It has no adverse effects on the zinc powder anode; (3) It contains no or little harmful additives elements; (4) the purity of the zinc powder should be high; (5) the material cost will not increase much. The amalgamation of zinc powder in alkaline zinc-manganese batteries mainly increases the hydrogen overvoltage of zinc powder in the alkaline electrolyte and inhibits the generation of hydrogen in the alkaline solution. The amalgamated film formed after amalgamation of zinc powder can evenly cover the surface of the zinc powder, thus changing the surface condition of the zinc particles and activating the zinc electrode, thus improving the electrical performance of the battery and reducing the leakage rate of the battery. During the battery discharge process, mercury continuously diffuses from the surface of the zinc particles to the inside of the zinc particles, thus making the discharge smooth. Therefore, under the condition of low amalgamation rate, to maintain the corrosion resistance of zinc powder, it is necessary to add an appropriate amount of trace elements that can increase the hydrogen overpotential and prevent mercury from diffusing into the zinc particles before the battery is discharged, without affecting the discharge. Within the reaction range, the specific surface area of zinc powder should be appropriately reduced. Selected trace additive elements generally use indium as a necessary additive element, because it can not only increase the hydrogen overvoltage on the surface of zinc alloy particles, but also easily make the zinc surface easily form an alloy with mercury, and the addition effect is more obvious. Therefore, whether the indium element is low-mercury zinc powder or mercury-free zinc powder, it is currently a must-add element. Other added elements include: lead, aluminum, bismuth, cadmium, etc. The cadmium element itself has a high overvoltage to hydrogen, so it has good corrosion resistance, but they are highly toxic and should be used as little as possible in some low-mercury or mercury-free batteries. Or not.
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