Salt water battery-a good power source in extraordinary times

The most commonly used batteries are dry batteries. The most commonly used is the zinc-manganese battery, the outer shell is zinc, the middle is a carbon rod and activated carbon mixed with manganese dioxide and various chemicals, and the electrolyte is pasty ammonium chloride or alkaline potassium hydroxide. Dry batteries are called dry batteries because there is another type of battery called wet batteries. The earliest voltaic battery was a wet battery. Two metal pieces are placed in a solution of hydrochloric acid and sulfuric acid. The biggest advantage of dry batteries is that no liquid will be poured out and it is very convenient to use. So everyone uses dry batteries every day. But wet batteries have not disappeared, such as salt water batteries, which have been developing for decades. 2 The main purpose of the salt water battery is to use it in sea water, using sea water as an electrolyte. There are many advantages of using seawater as an electrolyte: First, it can continuously wash away the various substances generated by chemical release, and the hydrogen produced can be discharged from seawater and air, instead of using manganese dioxide to turn it into water. . The system is open, no matter how much hydrogen you need to worry about. The volume of dry batteries can only hold a limited amount of chemicals. The outer skin of the dry battery is made of zinc and is very thin. Why not make it thicker to provide more power? Because even if the zinc flakes are still there, the other medicines inside are used up, and the thicker chip is useless. But seawater batteries do not have this problem. Seawater is an electrolyte with countless volumes, which can hold countless gases and wash away countless reaction products. In subsea scientific instruments and equipment, salt water batteries are often used. A large pile of metal dissolved in seawater can provide electricity for several years to decades. Small salt water batteries are only a few tenths of a watt to tens of watts, while large salt water batteries can provide more than one hundred kilowatts of energy for the seabed. 3 The salt water battery can use very thick metal as the electrode plate, which can provide a lot of energy. There is no need to carry electrolytes at ordinary times, and the volume is very light. As there is no electrolyte corrosion, it will not deteriorate after storing for decades or hundreds of years. As an emergency battery, the brine battery has great advantages over other batteries. Other batteries, whether they are disposable dry batteries, lithium batteries, nickel-cadmium batteries, or nickel-metal hydride batteries, are basically completely dead if they are stored for several years without charging. When there is a sudden power outage, there is no backup power available. At this time, the brine battery comes in handy. You only need to add some salt and water to it, and you can generate electricity continuously. If it is used for a long time, the brine may be turned into a paste by aluminum hydroxide or magnesium hydroxide. Wash these pastes and add new salt and water, and it can be used again. If the plate is a thick aluminum plate, magnesium plate, or zinc plate, it can be used for a long time until it is completely dissolved. In some lifeboats and seawater rescue equipment, flashing distress lights powered by salt water batteries are often installed. Once dropped into the sea, the battery immediately starts to work automatically, instead of frequently checking whether the battery is charged like other devices. Over the years, the United States has developed many salt water batteries for marine equipment, using complex alloy materials to improve efficiency, making full use of seawater for automatic cleaning, and preventing biological adhesion and covering such as oyster barnacles, all of which have made a lot of progress. 4 The emergency kit provided by the Japanese government for the public also uses a well-designed emergency light with salt water batteries. Once a disaster such as an earthquake occurs, the power will be cut off instantly and plunged into darkness. If there is no lighting, there is no way to escape, save and evacuate. Because of the long-term peace and long-term lack of electricity, most people do not have enough torches and batteries in their homes, and there are few emergency lights. Even if the batteries are found, they are often a few years ago, and they have long been out of electricity. At this time, the salt water battery lamp has a huge benefit. Just open the salt packet and add water, and you can continuously provide one hundred twenty to two hundred hours of lighting. In order to reduce the volume, it is made into a sealed bag structure, which has only a very small volume and does not occupy space at ordinary times. It can be carried in a survival backpack at any time. When in use, the gas released by the battery bulges the bag and becomes an inflatable structure that can be independently supported. There are also two air outlets on the bag, which automatically control the air pressure, so that the bag will not burst or collapse, and it will always maintain the most suitable shape. This kind of sealed bag of salt water battery emergency light is much more practical than the traditional sea salt water battery emergency light that uses a large box to hold water. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. 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