Mengshi technology returns to the power battery industry chain, focusing on battery recycling and cascade utilization

As a strategic department, mengshi science and technology co., LTD., which takes "high-end lithium battery manufacturing as the core and clean power and new energy vehicle rental operation as the auxiliary", is shifting its strategic focus to the power battery industry chain itself and consolidating the business development foundation through deep cultivation and meticulous work.

At the recently closed cibf (shenzhen) exhibition, Chen lewu, chairman of mengshi technology, received an exclusive interview with battery China website, and had an in-depth exchange on the layout of mengshi technology's integration of power battery industry chain.

It is understood that the fierce lion technology strategy focuses on the layout of the power battery upstream and downstream industrial chain. Chen lewu said that the core strategy of mengshi science and technology will focus on power battery manufacturing, and gradually extend up and downstream. Currently, it has already laid out some layout in NCA ternary material precursor, cathode material and copper foil, and lithium hydroxide will be laid out in the next step. On the downstream side, fierce lion will continue to focus on battery recycling and cascade utilization.

For the lion science and technology strategic layout of the extension of the upstream and downstream industrial chain, Chen lewu's statement is quite frankly. He believes that there are still some links in the power battery industry chain with high gross profit rate. If the gross profit rate of these links can be restored to the normal level, the cost of power battery will have a large space to fall, especially the cathode materials. The most direct advantage is to reduce the cost of battery manufacturing.

Chen lewu expresses, the core of industrial chain layout of fierce lion science and technology at present, still be power battery. It is reported that the phase I 1GWh18650 battery production line planned by mengshi technology in zhaoan, fujian has been put into production. The phase ii 1GWh18650 battery production line and two 21700 battery production lines are under construction with a production capacity of 5GWh, which is expected to be put into production within this year. The production lines of phase I 1GWh cubic lithium iron phosphate battery and 1GWh cubic ternary battery planned in yicheng, hubei province have also entered the commissioning stage.

Chen lewu, a popular 21700 battery in the field of sanyuan battery in the past two years, is quite proud of it: "now it is already in small batch production, and it can be put into production around the end of the year with a capacity of 3GWh. The energy density of our 21700 cells can reach 225Wh/kg, after which the energy density will continue to increase, and the ultimate goal is to achieve the energy density of 300Wh/kg by 2020.

According to China battery network, the 21700 battery cell independently developed by mengshi technology not only performs well in terms of the energy density of individual cells, but also has a 1C cycle life of more than 1000 cycles. In addition, the energy density of the 3d battery reaches 300Wh/kg, and the silicon content of the silicon-carbon negative electrode reaches 5. 3wt %, specific capacity > 500mAh/g, the first efficiency reached 89%, lithium sulfur battery sulfur positive load is 4. At 6mg/cm2, the energy density is up to 326wh/kg, the coulomb efficiency is up to 98%, and the specific capacity of 10 cycles is not attenuated. These research and development achievements also demonstrate the confidence and determination of mengshi technology in deeply developing the power battery industry chain.

It takes a firm foundation to fly higher. Regarding the next step of battery technology planning, Chen lewu said that mengshi focuses on lithium sulfur battery and solid state battery. In the area of lithium and sulfur batteries, fierce lion has been working with IMRE, a professional research institute in Singapore, since 2014, and samples are now available for use on drones. As for solid-state batteries, Chen lewu said, "at present, the cycle life of solid-state batteries is relatively short. The longest cycle life in the global research data is about 400 times, which is not suitable for power batteries, so it is only taken as the focus of research. "The technology for high nickel ternary batteries is going to evolve slowly, so there is a long way to go.

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