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How many AA batteries are equivalent to the capacity of a typical mobile phone battery?

by:CTECHi     2021-09-24
The battery was born more than 200 years ago. It was inspired by the frog's legs. One day in 1780, the Italian anatomist Galvani accidentally discovered that the frog's legs were holding different metal instruments in both hands while doing a frog dissection. The muscles will twitch immediately, as if being stimulated by an electric current. The concept of 'bioelectricity' was thus put forward. Galvani's discovery attracted the attention of many physicists, who repeated Galvani's experiments in an attempt to find a way to generate electric current. After many experiments, Volt believes that the reason why the frog's muscles can generate electricity is probably due to some kind of liquid. In 1799, in order to prove his idea, 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. As a result, Volt superimposed many zinc and silver sheets on top of each other, with flannel or paper soaked in salt water between them, to make the world's first battery 'Volt Stack'. In 1860, France's Falklands invented the carbon-zinc battery. The initially damp aqueous electrolyte was gradually replaced by a viscous paste-like electrolyte. In 1887, the British Hellerson invented the earliest dry battery. The electrolyte is paste-like and will not leak and is easy to carry, so it has been widely used. Today, dry batteries have developed into a huge family of more than 100 types. The battery is a device that directly converts the chemical energy stored in the fuel into electrical energy through an electrochemical oxidation-reduction reaction, and the transfer of electrons is transferred to the battery electrode through the electrolyte. Instead of an electrochemical oxidation reaction, electrons can be transferred directly to generate heat, such as metal rust and fuel combustion. There is no 'Carnot cycle' limitation when the battery converts chemical energy into electrical energy, so the energy conversion efficiency is higher than that of non-electrochemical redox reactions, which is one of the reasons why it can still be used in a wide range. The 2019 Nobel Prize in Chemistry was awarded to John Goodyear, Stanley Whittingham, and Akira Yoshino for their contributions to the development of lithium-ion batteries. Lithium can significantly increase the energy density of batteries. . But the realization of lithium batteries is not easy, because the activity of lithium is too high. So the question is, how many AA batteries are half of the mobile phone battery? The No. 5 batteries currently on the market can be roughly divided into carbon, alkaline, and lithium iron batteries. The capacity comparison can be seen from the table below: carbon
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