Is the AA battery dry?

Dry battery? As long as they do not add water, they are called dry batteries, but in general, when using electric shavers, alkaline batteries are recommended. Generally, Nanfu and trains have alkaline batteries. The general PHILIPS dry electric shaver uses Nanfu Energy Ring AA battery, which can continue to work for more than 60 minutes! In daily life, TV remote control boards, shavers, and flashlights all use dry batteries. Dry battery is a voltaic battery that uses some kind of absorbent (such as wood chips or gelatin) to make the contents into a paste that will not overflow. Often used as a power source for flashlight lighting, radios, etc. After years of development in my country's dry battery technology, its specific energy, cycle life, high and low temperature adaptability issues have been broken. Zhiyan Data Research Center stated that at present, my country is gradually narrowing the gap with international leading technologies, has reached international standards in some core technologies, and is increasingly entering the international market. Dry cell is a chemical battery that uses paste electrolyte to generate direct current (wet battery is a chemical battery that uses liquid electrolyte). It can be roughly divided into primary and secondary batteries. They are used in daily life. For universal use, and a lightweight battery. Its dry battery belongs to the primary battery in the chemical power source and is a kind of disposable battery. Because the electrolyte of this kind of chemical power device is a paste that cannot flow, it is called a dry cell, which is related to a battery with a flowable electrolyte. Dry batteries are not only suitable for flashlights, semiconductor radios, tape recorders, cameras, electronic clocks, toys, etc., but also for various fields in the national economy such as national defense, scientific research, telecommunications, navigation, aviation, and medicine. Generally, dry batteries are mostly manganese-zinc batteries, with a positive carbon rod in the middle, a mixture of graphite and manganese dioxide, and a layer of fiber mesh. The mesh is coated with a thick electrolyte paste, which is composed of ammonium chloride solution and starch. There is also a small amount of preservative. The outermost layer is a cylinder made of metal zinc skin, which is the negative electrode. The discharge of the battery is the electrolytic reaction of ammonium chloride and zinc, and the released charge is conducted by graphite to the positive carbon rod. The electrolytic reaction of zinc is It will release hydrogen. This gas will increase the internal resistance of the battery. The manganese dioxide mixed with graphite is used to absorb hydrogen. But if the battery continues to work or is used for too long, the manganese dioxide will be too late. It is nearly saturated and unable to absorb any more. At this time, the battery will lose its use due to too much internal resistance and too little output current. However, if the battery is heated or left for a period of time, the concentrated hydrogen inside it will be heated and released Or release slowly. When the manganese dioxide is reduced and recovered, the battery will be alive again! During the Eleventh Five-Year Plan period, my country's dry battery market expanded rapidly, and the output averaged a rapid increase of about 20% per year. The overall scale increased by two times, from about 70 million KVAh in 2005 to 144,166,800 KVAh in 2010. In 2011, the scale of production and sales of my country's dry battery industry has expanded, profits and sales profits have risen sharply, and the industry has better operating efficiency. In 2011, the total assets of my country's dry battery industry were 88.91 billion yuan, a year-on-year increase of 39.35%; sales revenue was 96.515 billion yuan, a year-on-year increase of 32.40%; total profits were 5.72 billion yuan, a year-on-year increase of 10.81%. At the same time, after years of development of dry battery technology, the specific energy, cycle life, high and low temperature adaptability issues have been broken. At present, my country is gradually narrowing the gap with international leading technologies, has reached the international level in some core technologies, and is increasingly entering the international market. One day in 1780, when the Italian anatomist Luigi Galvani was doing a frog dissection, he held different metal instruments in both hands and accidentally touched the frog’s thigh at the same time. The muscles of the frog’s leg twitched immediately. It seems to be stimulated by an electric current, but if only a metal device is used to touch the frog, there is no such reaction. Galvani believes that this phenomenon occurs because of a kind of electricity that appears inside the animal's body, which he calls bioelectricity. In 1799, Volt immersed a zinc plate and a silver plate in salt water, and found that there was current flowing through the wires connecting the two pieces of metal. So, he put a lot of flannel or paper soaked with salt water between the zinc and silver sheets and folded them flat. When you touch both ends with your hands, you will feel a strong current stimulation. Volt used this method to successfully make the world's first battery volt stack. This volt stack is actually a battery pack connected in series. In 1836, Daniel of the United Kingdom made improvements to the volt stack, and more effective Bunsen batteries and Grove batteries came out. However, at that time, no matter what kind of battery needs to be filled with liquid between the two metal plates, it is very inconvenient to carry, especially the liquid used in the battery is sulfuric acid, which is very dangerous when moving. The originator of dry batteries was born in the mid-19th century. In 1860, France's George Leclanche (George Leclanche) invented the carbon-zinc battery, which is easier to manufacture, and the initial moist water-based electrolyte is gradually replaced with a viscous paste-like method, so when it is placed in a container, Dry batteries appeared. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. 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