The screen of the mobile phone is big, the resolution of the screen is increased, the pixel of the mobile phone camera is high, and the number of CPU cores of the mobile phone is increased. At this time, the battery brother and its depression are on the side: "Other brothers are not affecting the external image of the smartphone. In the case of the ultimate touch, I’m making my own contribution to the smartphone’s search for a differentiated competitive advantage, and I’m really sorry for the brothers, dragging everyone’s hind legs.â€
Since the smart phone, the battery life problem has become the main shortcoming of the smart phone, and it has been a problem that the industry has been discussing. It is also a problem that the major mobile phone battery manufacturers really want and want to solve. This website has also done an article about the future battery, but it still takes time to use it on the mobile phone, not to mention the future battery. Who knows when the future is? In fact, battery life does not give force to this thing can not really blame the battery brother, we all know that the current mobile phone is equipped with lithium batteries, then let us first look at the basic principles of lithium batteries:
Basic principle of lithium battery
A lithium metal battery is a type of battery using a lithium metal or a lithium alloy as a negative electrode material and using a nonaqueous electrolyte solution. The earliest lithium battery used the following reaction: Li + MnO2 = LiMnO2, the reaction is a redox reaction, discharge.
The reaction occurring on the positive electrode is: LiCoO2 = charge = Li1-xCoO2+XLi++Xe (electron)
The reaction occurring on the negative electrode is: 6C+XLi++Xe====LixC6
Total battery reaction: LiCoO2+6C=Li1-xCoO2+LixC6
Cathode material: There are many optional cathode materials, and most of the current mainstream products use lithium iron phosphate. Different cathode material comparison tables:
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Positive electrode reaction: Lithium ions are embedded during discharge, and lithium ions are deintercalated during charging.
When charging: LiFePO4 → Li1-xFePO4 + xLi+ + xe-
When discharging: Li1-xFePO4 + xLi+ + xe- → LiFePO4
Anode material: Graphite is mostly used.
Negative reaction: Lithium ion is deintercalated during discharge, and lithium ions are inserted during charging.
When charging: xLi+ + xe- + 6C → LixC6
When discharging: LixC6 → xLi+ + xe- + 6C (Via Baidu Encyclopedia)
Lithium-ion batteries have the characteristics of high voltage, high capacity, low consumption, no memory effect, no pollution, small volume, small internal resistance, less self-discharge, and many cycles. Because of its characteristics, it is widely used in the daily needs of people. In the era of feature phones, these characteristics of lithium batteries are enough to ensure that everyone has a normal life, but in the era of smart phones, because the power consumption of various components is increasing, lithium batteries allow men to develop a good home every day. habit.
As you can see from the above figure, the battery capacity of each gram of cathode material is limited. To increase the battery capacity, the battery volume must be increased.
Xiaobian has interviewed many manufacturers who make mobile phone batteries. They all think that lithium batteries are already a good product for mobile phone batteries. They can't increase their capacity. The battery capacity is proportional to the size of the battery. However, many manufacturers now require the thin and light of smart phones. To increase the battery capacity of mobile phones and enhance their endurance, the size of mobile phones will undoubtedly become larger, which will have an impact on the appearance of mobile phones.
The reason why the mobile phone has no progress in battery life, the main battery material problem, has not found a small, large capacity new battery material can replace the lithium battery, and when can break through in the new battery material, Unknown.
From this point of view, Xiaobian said a fair statement, the battery brother has done his best, as a mobile phone battery, it also wants to bring more convenience to everyone, just because of bottlenecks on the battery material, themselves It is also powerless. Now I can only expect to see a god-like figure, discover new battery materials and apply it to people's lives.
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