Give up three yuan 811? Ningde era refutes rumors and will push metal-free batteries

by:CTECHi     2021-08-25
In response to the recent industry rumor that the Ningde era has given up the research and development of the 811 ternary lithium battery, the insiders of the Ningde era responded to the reporter and said: a proper rumor. Earlier news said that the Ningde era has basically denied the 811 route. The source said: 'Increment must be used less, the stock can only be handled flexibly, and the pressure is very high.' Ningde insiders responded: 'This month, BMW ix3 will use 811? The facts are there.' According to news, BMW will unveil a pure electric SUVix3 in Shenyang on September 13, equipped with an 80-degree battery and a range of 520 kilometers. Ningde insiders pointed out that the Ningde era will continue to focus on lithium batteries. In the future, it will launch lithium batteries that do not contain nickel, cobalt, and manganese. Ningde’s internal name is 'metal-free batteries.' At present, the mainstream types of power batteries are divided into lithium iron phosphate batteries and ternary lithium batteries. Since the lithium iron phosphate battery does not contain cobalt, the 'cobalt-free' referred to in the industry is usually the decobaltization in the ternary lithium battery. The ternary lithium battery is a lithium battery that uses nickel and cobalt as the positive electrode material and uses manganese or aluminum salts to stabilize the chemical structure. Nickel-cobalt-manganese NCM refers to a combination of three materials of nickel, cobalt and manganese in a certain proportion of the positive electrode material. NCM stands for the abbreviation of the names of the three elements, and each has different functions and uses, so the 811 value refers to the ratio of element composition, 8 parts nickel, 1 part cobalt, 1 part manganese, which adds up to 10 parts, which is one part. Whole serving. In the same way, 622/523, etc. also represent different ratios of NCM, which is very intuitive. At present, the main domestic battery giants are still based on NCM, and the battery used by Tesla is a nickel-cobalt-aluminum NCA ternary lithium battery. In recent days, a series of spontaneous fires of electric vehicles in high temperature weather have tightened everyone's nerves. Is the fire related to the battery? What kind of battery is safe? High nickel ternary batteries, usually as the nickel content increases, the cycleability, safety and rate performance of the power battery will decrease or weaken. Experimental data shows that for every 10% increase in power battery capacity, the cycle life will be reduced by about 20%, the charge-discharge rate will be reduced by 30-40%, and the temperature of the battery will rise by about 20%. This is also the main reason why the industry believes that NCM811 is unsafe. However, NCM811 has huge advantages in improving energy density and reducing costs, attracting many battery giants around the world to compete for research and development. Domestic Ningde Times, Guoxuan Hi-Tech, BAK Power, Lishen Battery, Vision AESC, Honeycomb Energy, Tafel, Wanxiang 123, Yiwei Lithium Energy, Funeng Technology, BYD, Thornton New Energy, Far East Foster, Penghui Energy, Cane New Energy, and foreign battery companies such as LG Chem, SKI, Samsung SDI, etc. have all deployed NCM811. At the China Automotive Blue Book Forum on August 12, Zeng Yuqun also mentioned that the most important thing for future battery technology innovation is material innovation. There are only a few materials that can be used to make batteries in the world, because no one can jump out of the scope of the Nobel Prize, so scientific research and development is to invest in materials.
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