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Types of high energy batteries.lithium trolling motor battery sales

source:other news release time:2023-04-19 Hits:0     Popular:Lithium-ion battery wholesale

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  ① Magnesium dried batteries with magnesium as negative active substances: The structure is basically the same as that of zinc-manganese dry batteries. The standard electrode potential of magnesium is relatively low, and the electrochemical equivalent is small, which has an excellent condition as a high -energy battery negative active material. For example, the actual energy of magnesium-manganese dry batteries is 4 times that of zinc-manganese dry batteries. The voltage is stable at work. It also has a good working ability at low temperature and can resist high temperature storage. The disadvantage is that there is a voltage lag (after connecting it, it takes a period of time to rise to the termination voltage value), and the lag time is about 2 to 3 seconds; due to the corrosion effect, the magnesium electrode current efficiency is low; it is not suitable for small current for a long time for a long time Intermittent electricity.

  ② Metal-air battery: The oxygen in the air is used as a positive active substance, and the metal is used as a battery (see the battery) for the negative active substance.

  ③ Lithium-non-hydrolytic solution battery: The electrochemical equivalent of lithium is about one-half of the magnesium. Therefore, as the negative electrode of high-energy battery, lithium is better than magnesium. However, the lithium and water should be fiercely reacting. Organic solvents or non -water inorganic solvents must be used to prepare electrolyte solutions, and the conductivity of inorganic salt is added. The positive materials used are mainly solid fluoride, chloride, oxides, and sulfides. Most of these batteries are more than 1,000 watt -hour/kg. It is actually higher than energy. For example, the density of lithium-copper (Li/CUF2) batteries at the discharge current is 2 mA/cm 2, and the actual energy can reach 250 watt-hour/kg. Because the electrolyte solution is smaller than the conductivity, the current density cannot be improved, so the lithium-non-hydrolytic solution battery is a high-ratio energy, low-power battery. The lithium -sulfide battery is discharged under heavy burden, especially when the external short circuit will explode.

  ④ Sodium -sulfur battery: It is a relatively mature secondary battery developed in recent years. Its negative electrode is sodium (NA) of melting metal (NA); positive active substances are melting of sodium polychide (NA2SX), which are usually full of porous carbon and carbon as a positive album. The conductive ceramic tube is needed to separate sodium from polysulfide to prevent self -discharge from direct reactions. In addition, ceramic tube also plays an electrolyte in the battery. When the battery is discharged, the reaction on the negative electrode is 2NA-→ 2NA ++ 2E-NA+

  Entering the positive electrode and sulfur reaction through the conductive ceramic tube to form polysum. The discharge is terminated when the sodium of the negative electrode is exhausted. In order to make sodium and sodium polysulfide in liquid, the discharge must be carried out at about 300 ° C. The actual energy of sodium-sulfur batteries has reached 100 watt-hour/kg, and the charging and discharge cycle can reach 2,000 deep discharge cycles, so it is especially suitable for electric batteries for vehicles.


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