Power lithium-ion battery recovery and then use the foreground a big

作者：Iflowpower – Kaasaskantava elektrijaama tarnija

A few days ago, Honda took the lead in establishing a mixed power vehicle nickel-hydrogen battery circulation utilization mechanism, and rare earths extracted in the mixed power vehicle nickel-hydrogen battery were put into actual use. A few days ago, Honda took the lead in establishing a mixed power vehicle nickel-hydrogen battery circulation utilization mechanism, and rare earths extracted in the mixed power vehicle nickel-hydrogen battery were put into actual use. Honda's rare earth resource recycling method has caused extensive attention in the industry, and also triggered discussions about the recycling technology of dynamic lithium-ion batteries.

With the increasing depletion of global oil reserves and the deterioration of the environment, new energy vehicles will become the development direction of future vehicles. Lithium-ion, nickel-hydrogen battery, etc., with its high specific energy, long life, suitable for high-current discharge, non-polluting, etc.

, becomes a new energy electric vehicle preferred green power source. At the same time, some issues are also increasingly visual: such as nickel, cobalt, rare earth resource bottleneck problem, and environmental pollution issues of scrap-in-one lithium-ion batteries, etc. According to statistics, my country's 2010 battery industry consumes approximately 23,000 tons, about 4,000 tons of metal, mixed rare earth metal, and the uniform life of the power lithium-ion battery is about 3 to 8 years, and a large amount of power lithium-ion battery is triggered.

Resource shortage and environmental problems are growing. Environmental benefits have a key-price metal nickel, cobalt, rare earth, etc., which will continue to rise, and severely affect the manufacturing cost of dynamic lithium-ion batteries.

Taking a nickel hydride-based lithium-ion battery, the nickel content of the waste nickel hydrogen power lithium ion battery is 30% to 50%, the cobalt content is 2% to 5%, the rare earth content is 5% to 10%, which has high recovery. Economic Value. The model specifications of the power lithium-ion battery products are unified, the component content is stable, and the use of the market is easy to manage.

These are a very convenient conditions for their recovery. It is foreseeable that in the future, the power lithium ion battery recovery cycle use will become an emerging industry, and the recycling and regeneration of the failure power lithium-ion battery can not only bring huge environmental benefits, but also brings considerable economic benefits and social benefits. This can not only effectively control the battery cost, but also play a forward positive effect for the popularity of hybrid vehicles.

The rare earth resources used in the nickel hydrodynamic lithium-ion battery are mainly mixed rare earth metals such as lanthanum, ruthenium, 镨, 钕, is in the form of metal, such as nickel, cobalt, manganese, etc., by melt forming hydrogen storage alloy anode active material. It can be seen that the chemical composition in the nickel-hydrogen battery is very complicated.

Compared to other batteries such as nickel-cadmium batteries, it is much more difficult to recover. Honda and Japan Heavy Chemical Industry Co., Ltd.

jointly developed a nickel-hydrogen battery recovery production process, extracting mixed rare earth oxides from the failure product, further molten salt electrolysis is straight for mixed rare earth metal for preparing nickel-hydrogen battery negative electrode materials. This approach has more cost and component advantages over rare earth mining from mines. In addition, the mixed rare earth is obtained through the melt salt electrolysis, and the complex rare earth separation purification is also guarded, and the traditional recycling process is reduced.

This loop reuse solution pattern will become a tight recovery model that solves the waste of electronic appliances in the future. Domestic "White District" At present, the domestic nickel-hydrogen power lithium-ion battery market has not yet formed climate, the production and sales volume is not large, and the number of invalid batteries is not much, and the recovery of nickel-hydrogen power lithium-ion batteries is also in the technical research stage. The recovery of general civil batteries is weak, and the recycling system is not perfect due to environmental awareness.

It is now less than 2% of China's overall recovery. Most general civil waste batteries are discarded by consumers and domestic garbage. They have not been recycled.

In addition, the general civilian battery has a wide variety, including a alkali manganese battery, nickel-hydrogen battery, nickel-cadmium battery, lithium-ion battery, etc., which increases the difficulty of recovery. The model specifications of the same variety battery and the ingredient content are also large, which further increases the difficulty of recycling.

In addition, if you want to use the battery manufacturing, it is difficult to form a large-scale recycling industry chain due to the control, batch stability and consistency of the impurity content. Some companies that recycle waste batteries in China have solved the technical routes of the nickel-hydrogen battery, which is generally made of nickel sulfate, cobalt chloride, cobalt chloride, or ultrafine nickel powder, cobalt powder, and cobalt powder. Cobalt ball nickel, three-yuan material front body, etc.

In Jiangxi, Jiangsu and Shandong rare earth recycling company, it is necessary to engage in the recycling business of rare earth magnetic materials, after separating rare earth oxides, further smelting as metal. At present, there is no real battery rare earth recycling company in China. Nankai University has developed a negative rare earth storage alloy powder regeneration technology, and the collection of hydrogen storage alloy waste has been preused to remove harmful impurities in the waste, and add a certain price metal, then vacuum melting, straight to nickel hydrogen Qualified hydrogen storage alloy required for battery manufacturing.

This processing method is simple, safe and reliable, no pollution, and the alloy element is recycled, and the cost is low. However, such hydrogen storage alloy waste recovery is high, the product quality is unstable, and the product impurity content is high, product performance has a certain difference in product performance, so this recycling method is subject to certain restrictions. The Advanced Infilometric Materials National Engineering Research Center has also carried out a series of research on rare earth recovery re-use techniques in nickel-hydrogen dynamic lithium-ion batteries in recent years.

Research ideas is to prepare a negative hydrogen storage alloy in the production of nickel-hydrogen power lithium ion batteries. Material, can be reused to the processing of nickel-hydrogen power lithium-ion batteries, two items have been applied. The scale of the recycling technology can reduce the processing cost of the nickel-hydrogen power lithium-ion battery, which will play a positive use of the development of the domestic hybrid automotive industry.