Why is the mobile phone battery only lithium battery? Other similar to zinc/nickel?

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Most of the smartphones on the market today use lithium-ion batteries, which are the lithium batteries we often say. Lithium batteries are superior to other zinc/nickel batteries in many respects. They are faster, more durable and safer. It is also more environmentally friendly. Let's take a look at some of the knowledge and advantages of lithium batteries under the official science.

01 What is a lithium ion battery?

Lithium batteries are classified into lithium batteries and lithium ion batteries. Today's mobile phones and laptops use lithium-ion batteries, which are commonly referred to as "lithium batteries" and are representative of modern high-performance batteries. The real lithium battery is extremely dangerous and rarely used in everyday digital electronic products.

Lithium-ion batteries are also known as secondary batteries (rechargeable batteries). Rechargeable lithium-ion batteries are the most widely used in modern digital electronic products. The biggest difference between them and lithium batteries is that the latter uses metallic lithium as the negative electrode, while lithium-ion batteries are The lithium-containing material (graphite and petroleum coke) is used as an electrode, which largely inhibits the high activity of lithium and solves the safety problem of the conventional lithium battery.

02 Lithium-ion battery advantages

Since lithium-ion batteries are the first choice for smartphones today, there are naturally advantages to them. Compared with traditional battery technology, lithium-ion batteries are faster to charge, longer lasting, and higher power density for longer battery life and a slimmer body.

Compared with mobile phones, the most important thing about lithium-ion batteries is two points: good safety performance and long cycle life.

Tips1. Good security

No pollution. Lithium-ion batteries, unlike traditional lithium batteries, are highly prone to short-circuit explosions. Lithium-ion batteries have been designed with many protection mechanisms and are safer. No memory effect. The memory effect mentioned here means that some batteries will remember the user's charge and discharge amplitude and mode. After a long time, it is difficult to change this mode, and can not do a large charge and discharge, while lithium-ion batteries will not have a memory effect. of. This is also the reason that lithium battery phones can be charged as needed.

Tips2. Long cycle life

Lithium-ion batteries generally have a service life of 2-3 years. Generally, it can reach more than 500 times, or even more than 1000 times, and lithium iron phosphate can reach more than 2,000 times. For mobile phones, long cycle life means longer use. For some high-quality batteries, such as iPhone lithium batteries, the battery can still maintain 80% capacity after 500 charge cycles.

In fact, no matter what kind of battery, as long as it can be charged quickly, use more durable, and also take into account security, this is the best experience for users. But in many cases, battery development will be limited by many aspects, not only in terms of technology, but also in the impact of the industry chain and interests.