What is a silicon negative technology battery | Aipoji - 上海419贵族宝贝-上海后花园1314-上海品茶网-阿拉爱上海

Recently, there is a domestic mobile phone Blue degree X2P It has come into everyone's sight and is known as a high-end smartphone with "the most high-end configuration in the market at present and distinctive appearance design". It also publicized on its official microblog that the battery of this mobile phone uses the latest silicon anode technology, which greatly improves the Battery capacity , ensuring the endurance of the mobile phone.

Blue degree X2P

Xiaobian looked at the configuration of the lower Landu X2 mobile phone, which is indeed a very mainstream configuration. The battery capacity has reached 4200mAh, which is far higher than any large screen in the current market High end model 。 In the introduction of this mobile phone, the battery function was emphasized: the bottom current of the Landu X2 is only 4mAh, which can be used for 1000 hours; The standby current is optimized to 8mAh, and the standby time can be up to 500 hours; The average operating current is 300mAh, and the video can be played continuously for 13 hours. Its battery capacity also breaks the rule that smart phones are charged every day. Even if they are used intensively, they can last for two or three days. In addition, in the column of battery capacity, the technology of silicon negative battery is specially indicated. So what is the silicon negative battery technology? Xiao Bian specially searched for information.

High capacity silicon anode material

In fact, high voltage, polymer and silicon anode are all lithium battery Silicon anode is just a new technology, so far, there are few applications on mobile phones. At present, most lithium batteries use carbon based materials as negative electrodes. However, the reversible capacity of the carbon based materials as negative electrodes is only 372mAh/g, which severely limits the development of future lithium ion batteries. Therefore, the next generation of lithium ion battery negative electrode materials need to be developed. During the research, researchers found that the capacity of a silicon element (Li22Si5) reached 4200mAh/g, which is an excellent material for developing high capacity batteries. And the battery made of the negative electrode material has almost no capacity decay during use, which is more conducive to improving the service life of the battery. In addition, silicon is abundant on the earth with low cost, so it is a very promising anode material for lithium ion batteries. (via: Baidu Wenku)

Silicon raw material

However, it is not so easy to accomplish such a feat. Relevant laboratories have done many tests before, and found that the lithium insertion reaction of silicon will be accompanied by large volume changes (~300%) during the discharge process, which will cause the destruction of material structure and mechanical pulverization, resulting in the separation of electrode materials and electrode materials from the collector, thus losing electrical contact, As a result, the capacity decreases rapidly and the cycle performance deteriorates. After obtaining High capacity At the same time, how to improve the cycling performance of silicon anode materials has become the research focus of silicon anode materials. Although progress has been made in this regard, it has not been fully popularized. Then Xiaobian contacted several mobile phone battery manufacturers in Shenzhen, and they said that they had not yet involved in the research and development of battery technology in this area.

Whether Lando's mobile phone is a gimmick or a battery that actually uses silicon anode technology, we have to wait for the market to reflect. If we use silicon negative electrode batteries as advertised mobile phone It is undoubtedly a great pleasure for the mobile phone industry to be able to stand by for two to three days under high intensity use.

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