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18650 rechargeable battery lithium 3.7v 3500mah
18650 rechargeable battery lithium 3.7v 3500mah

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CR1632 battery.What are the advantages of nickel cadmium batteries?

release time:2024-05-08 Hits:     Popular:AG11 battery

  

  Nickel cadmium battery is an alkaline battery in which the positive electrode active material is mainly made of nickel and the negative electrode active material is mainly made of cadmium. The positive electrode is nickel hydroxide, the negative electrode is cadmium, and the electrolyte is potassium hydroxide solution. Its advantages are lightweight, earthquake resistant, and long service life, commonly used in small electronic devices.

  The positive electrode material of nickel cadmium batteries is a mixture of nickel hydroxide and graphite powder, the negative electrode material is a sponge mesh sieve like cadmium powder and cadmium oxide powder, and the electrolyte is usually a solution of sodium hydroxide or potassium hydroxide. When the ambient temperature is high, use a sodium hydroxide solution with a density of 1.17-1.19 (at 15 ℃). When the ambient temperature is low, use a potassium hydroxide solution with a density of 1.19-1.21 (at 15 ℃). When below -15 ℃, use a potassium hydroxide solution with a density of 1.25~1.27 (at 15 ℃). To balance low-temperature performance and charge retention capacity, sealed nickel cadmium batteries use a potassium hydroxide solution with a density of 1.40 (at 15 ℃). In order to increase the capacity and cycle life of batteries, a small amount of lithium hydroxide is usually added to the electrolyte (approximately 15-20g per liter of electrolyte).


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