Why did the phone choose lithium batteries?

With the rise of smartphones, life has become a headache for users, starting on Monday, a function of age, three days, now charging once a day, or even twice a day.

Some people think that mobile phone manufacturers deliberately do not do battery life, intentionally do not sell cell phone power, is the capital to hinder the development of battery technology, really? Let's see.

Why do cell phones use lithium batteries?

Is the poor life of a mobile phone a problem for the manufacturer?

At present, most of the cells we use come from an old model, the 1800 battery. In the past 300 years, people have continued to search for positive and negative materials, increase energy density, and popularize batteries, nickel-cadmium batteries, and lithium batteries, all of which have been upgraded since more than 300 years ago.

In fact, the first use of mobile phones is nickel-metal hydride batteries, not lithium batteries. In 1992, Sony invented rechargeable lithium-ion batteries, which gradually entered our computers, mobile phones and mainstream batteries.

Batteries consist of positive, negative, electrolytes, and non-electrolytes. One is a traditional liquid electrolyte. We call it a lithium-ion battery. There is no other name. When there is an organic polymer electrolyte, there is no liquid organic polymer., We call lithium-polymer batteries lithium-ion polymer batteries. It's two big ones.

Under the two major categories, depending on the battery class of the material(the negative material is mostly graphite), it is divided into lithium-ion lithium-cobalt acid(polymer, not followed by similar) batteries, lithium-manganese lithium-ion batteries, and lithium-ion batteries. Three-element material, lithium iron phosphate lithium-ion battery. There, lithium cobalt acid has fewer cycles and poor safety, but its capacity is good, it is relatively cheap, and it is the most used. Most mobile phone batteries use lithium cobalt acid batteries on the market.

The performance of ternary materials is good, except for peak current overload, other indicators are good, but expensive and less used.

Manganese acid lithium security good, and overloaded, but its capacity is not high, it has no life, and it is less used.

The best life, lithium iron phosphate overload is large, but the capacity is not large, expensive, except for the basic use of electric vehicles and RC. In other words, our current cell phone battery is a better material to use capacity, unless another 1992 Sony lithium-ion battery breakthrough invention can only be slowly lifted.

Second, what affects the battery capacity?

Is the poor life of a mobile phone a problem for the manufacturer?

In fact, the energy density of the battery is natural. The energy we use every day is ultimately electronic transmission. We burn coal, we burn oil, from a chemical point of view, it's a Redox reaction, including electron transfer.

We use batteries and electron transfer, and we learn to understand the price of junior high school chemistry. One atom, the number of electron transfer is limited. Only the first two lines of light atoms in the periodic table can be a good energy carrier. There are only 10 elements in the two lines before the periodic table of chemical elements, and hydrogen, lithium helium, boron, carbon, and nitrogen fluorine are newly born. Helium and helium are inert gases, oxygen and fluorine are antioxidants, hydrogen, carbon, boron, beryllium, lithium, and we now only make lithium batteries.

The lithium ion battery originally invented by Sony is dangerous to lithium metals and can be used for recharging batteries. The lithium battery needs not only compounds, but also cathode materials, electrolytes, and shells. The result is only about 2 % of the battery weight, lithium material is all released, and there is not much electricity. Needless to say, in order to stabilize, About 50 % of the battery can not be put.

Finally, it is mankind that has made a lot of efforts to create a variety of new materials, a recent graphene, carbon nanotubes, but the energy density of batteries that can be industrially produced can increase by 10 % each year thanks to God.

Third, I didn't mean to kill anyone.

Is the poor life of a mobile phone a problem for the manufacturer?

In fact, news about battery materials is improving every year and even every month. Industrialization requires a process, but in fact it takes several years from invention to industrialization. There's no breakthrough, it 'll change soon enough.

It is not true that capital crocodilians hinder technological progress, because everything from lead-acid batteries to nickel-metal hydride batteries to nickel-metal hydride batteries to today's lithium-ion batteries is a breakthrough if the big crocodilians are capable of killing progress. So today we still use lead-acid batteries.

For Apple, Xiaomi is an integrator. They do not have the ability to determine the upstream industrial chain. Samsung, LG, God, what kind of batteries, BYD, what kind of cell phone batteries they can make. In fact, Apple's life on the phone is not bad. Cell phone batteries have actually been improving, with the energy density of cell phone batteries tripling over the past decade. The past dopod 696 large battery only 1200 mah, and now the 3000 mAh battery is a big problem. Only modern smartphones still feel that batteries are not enough because high-performance processors, large screens, and power consumption are much higher than functional phones.

In addition, light mobile phones also limit the range of mobile phones. It has now been developed to 6000 mAh, the range of mobile phones, thickness 11.9 mm, is still considered too thick, 15 mm old mobile phone function is normal.

You ask for thin, big screens, high-speed processors, and also call for life, and the battery says, "Male and female servants really can't do this. "

Therefore, the lack of range of mobile phones is the principle of lithium battery restrictions. The slow progress of materials science, the integration of smartphones and excessive power consumption, the so-called conspiracy theories are many.

The page contains the contents of the machine translation.