Mass production!

Withstanding the hot weather, the ice and snow, the fast charging, and the low cost, such lithium batteries really exist and have been mass-produced
.
A few days ago, a new lithium-ion aluminum-based battery technology developed by the team of Tang Yongbing, a researcher at the Carbon Neutrality (Preparation) Institute of Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, has completed mass production
.
This is China's first battery cell product with a wide temperature range, low cost and long life, which is expected to break the pattern of the battery industry
.

The qualified rate of products in this large-scale mass production reached 99.
11%, and the qualified rate of each process in the process was above 99%
.

From automobiles to electronic products, lithium-ion batteries have already penetrated into people's daily necessities of life
.
According to the "2021 China Lithium Battery Industry Development Index White Paper" recently released by CCID Research Institute of the Ministry of Industry and Information Technology, China has become the world's largest lithium battery consumer market for five consecutive years
.
However, a major limitation of the current lithium-ion battery is environmental adaptability: the charging time will be very long under low temperature conditions below zero degrees Celsius, and the lower the temperature, the lower the capacity will be; at high temperatures above 50 degrees Celsius, safety Not guaranteed
.
China has a vast territory, and the temperature varies greatly in different regions and seasons.
The temperature in the northern region can be as low as minus 40 degrees Celsius in winter, and the surface temperature in the southern region is as high as 50 degrees Celsius in summer.
It happens from time to time
.

The new lithium-ion battery technology developed by Tang Yongbing's team for nearly 10 years is both frost-resistant and heat-resistant.
The minimum operating temperature can reach minus 70 degrees Celsius, and the maximum operating temperature can reach 80 degrees Celsius, and low temperature and high temperature performance can be taken into account at the same time
.
It is reported that the high and low temperature performance, cycle life, safety performance and other indicators of the product have been tested by third-party authoritative organizations, and have obtained ISO9001, GB 31241-2014, IEC 62133-2:2017, UN38.
3 and other standards and qualifications Certification
.

Where is the new battery new? Tang Yongbing's team mainly worked on anode materials and electrolytes
.

The team has developed a new type of aluminum-based composite anode material.
By matching with the cathode material of commercial lithium-ion batteries, it has successfully developed products such as new lithium manganate, lithium iron phosphate and ternary batteries for different application scenarios
.
"In addition to the characteristics of heat resistance and frost resistance, the battery products we developed also have the advantages of high safety, long battery life, fast charging and low cost
.
" A participant in the team said
.

In terms of safety performance, with the continuous use of conventional lithium batteries, lithium dendrites will be generated inside, which not only affects the charging ability, but also may pierce the separator, causing hidden dangers such as battery short circuit
.
The new aluminum-based anode developed by the team can effectively alleviate the generation of lithium dendrites and improve safety under low temperature and overcharge conditions
.

In terms of battery life, thanks to the high theoretical capacity of the aluminum-based negative electrode material, the energy density of the battery is 13% to 25% higher than that of traditional lithium-ion batteries, enabling long battery life
.
In addition, due to the excellent electrical conductivity of the aluminum-based composite negative electrode, the product also shows good fast charging performance, which can be fully charged in 20 minutes, providing a solution for the half-hour charging requirement of electric vehicles
.

In terms of cost, based on the performance advantages of the aluminum-based composite negative electrode, combined with the developed high-performance electrolyte, low-temperature battery products can get rid of the dependence on expensive nano-scale positive electrode materials, reducing the cost by 10% to 30%
.

It is reported that the mass-produced products are mainly used in electric vehicle related fields, and can also be used in photovoltaic energy storage, home energy storage, communication base station energy storage, rail transit, national defense construction, aerospace, polar scientific research and other fields, especially suitable for In alpine and subtropical regions, the application range of batteries has been significantly expanded
.

The team has carried out a systematic and comprehensive intellectual property layout around related technologies, and has formed more than 180 patent pools including PCT patents, Chinese invention patents, and patents from the United States, Europe, Japan and South Korea, and has obtained more than 120 authorized patents
.

International authoritative expert in energy storage materials and electrochemistry, Professor Arumugam Mantiram of the University of Texas at Austin commented: This achievement is the first to propose the concept of bifunctional aluminum-based anode, matching commercial cathodes such as lithium cobalt oxide, phosphoric acid Lithium iron, ternary materials, etc.
, the battery exhibits excellent long-cycle stability, which makes aluminum-based batteries have great application potential
.