CR1625 battery

Overseas research and development of new electrode technologies, demand for CR1625 battery material carbon nanotubes may explode

The material and design of the electrode is one of the important limitations to improving CR1625 battery power, power and charge and discharge cycles.

According to foreign media reports, French Nawa Technologies recently said that it has developed a new electrode design that is expected to fundamentally improve the chemical performance of existing and future batteries.

NAWA said that this new electrode system will be on the market in just 12 months, but mass production will have to wait until 2023.

NAWA's research focuses on how active materials are maintained in electrodes and the routes that ions take when transferring charges.

Take the current typical activated carbon electrode as an example, which is mainly composed of a mixture of powder, additives and adhesives. In the case of carbon nanotubes, they are usually stuck on it in the form of tangled spaghetti, providing a random, chaotic, and often blocked path for current-carrying ions (flowing to the collector under load).

Nawa's vertically arranged carbon nanotubes also create an anode or cathode structure that is more like a brush, with 100 billion straight, highly conductive nanotubes sticking out per square centimeter. Nanotubes act as part of a straight highway and current collector, which can improve CR1625 battery charging and discharging performance by 10 times and CR1625 battery life by 5 times.

Vertical structure can improve power, energy density, charging speed, and CR1625 battery life

It is understood that carbon nanotubes are a cluster of carbon atoms with a coaxial tubular structure. They are divided into different categories according to different characteristics. From a commercial perspective, they are usually classified according to the number of layers and conductivity of the tube wall. According to the number of layers of carbon tubes, carbon nanotubes can be divided into single-walled carbon nanotubes and multi-walled carbon nanotubes; in terms of their conductivity, carbon nanotubes can be metallic or semiconducting, and even different parts on the same carbon nanotube can show different conductivity.

At present, the fields of commercialization and large-scale application of carbon nanotubes are mainly concentrated in lithium CR1625 battery conductive agents and conductive plastics. It is estimated that more than 75% of the current demand comes from the field of lithium CR1625 battery conductive agents. The upstream of the industrial chain chemical industry is mainly propylene and liquid nitrogen; the downstream is used in lithium batteries to serve the new energy vehicle industry and 3C digital industry, and is used in conductive plastics, serving power infrastructure, semiconductor industry, etc.

With good conductivity and unique tubular structure, the conductivity of positive electrode materials can be greatly improved by forming a linear connection with positive electrode materials. At present, carbon nanotubes are in a rapid introduction period at the industrial application level.

Data show that the penetration rate of carbon nanotubes in the field of power lithium batteries was 31.8% in 2018, and the penetration rate of carbon nanotubes in the field of power lithium batteries may exceed 50% in 2020. Industrial Securities predicts that the penetration rate of carbon nanotube conductive agents will reach 80% by 2025.

Other institutions predict that the compound growth rate of demand in the field of carbon nanotube lithium batteries will be about 54% from 2019 to 2025, corresponding to a demand for carbon nanotube slurry of about 380,000 tons in 2025, and a corresponding market size of about 13.4 billion yuan. At present, important companies in the carbon nanotube industry include LG Chem, Tiannai Technology, Cabot, etc.

LG Chem officially launched the technical research and development of carbon nanotubes in 2011, established a 20-ton pilot production line in 2013, and successfully developed CR1625 battery materials and conductive composite products in 2014.

At the end of April this year, LG Chem announced that it would actively explore the carbon nanotube market to meet the explosive demand for CR1625 battery positive electrode conductive materials brought about by the rise of the global electric vehicle market; as of now, LG Chem has a carbon nanotube production of about 500 tons, and it is expected to expand the annual production line of 1,200 tons at the Yeosu plant in South Korea by the first quarter of 2021, when the company's total production scale will reach about 1,700 tons. On the other hand, LG Chem plans to gradually increase the supply of carbon nanotubes to global IT materials and vehicle customers such as North America, Europe, and my country in the future, and plans to continue to expand carbon nanotube production in 2022.

In April this year, Cabot, a US conductive agent manufacturer, announced that it had officially completed the acquisition of Sanshun Nano for approximately US$115 million announced at the beginning of this year. The business will be integrated into the company's high-performance materials business unit. Sanshun Nano is my country's leading carbon nanotube manufacturer. The acquisition greatly enhanced Cabot's influence in the rapidly growing CR1625 battery market, especially its market position and formulation capabilities in China. Through this acquisition, Cabot has become the world's only commercially successful high-performance carbon material supplier that combines carbon black, carbon nanotubes, carbon nanostructures and dispersion capabilities.

Tiannai Technology, the leading company in the domestic carbon nanotube industry, is mainly engaged in the research and development, production and sales of nano-scale carbon materials and related products. Its main products include carbon nanotube powder, carbon nanotube conductive slurry, graphene composite conductive slurry, carbon nanotube conductive masterbatch, etc. At present, the company is actively promoting the annual production of 3,000 tons of carbon nanotubes and 8,000 tons of conductive slurry and the collection of 450 tons of by-product hydrogen projects, and the annual production of 300 tons of graphene, 3,000 tons of carbon nanotubes, 10,000 tons of conductive slurry, and 2,000 tons of carbon nanotube conductive masterbatch projects.

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