Higher cycle times, greater safety and recycled materials? Especially for comprehensive recycling and reuse, under the current technical conditions, there seems to be no such power battery. With these questions, the reporter visited GRST's R&D center and manufacturing and recycling line in Shunde, Guangdong. Mass production and recycling tests have shown us a new vision of green development of power batteries, and their safety, cycle life and even energy density are not inferior to similar products on the market today. What is even more gratifying is that GRST is actively promoting Through this technology transfer cooperation, we hope that more manufacturers will join this family of green development of power batteries. The key to the comprehensive recycling and reuse of this power battery lies in its fully aqueous electrode production process.

　　battery shredded

　　Separation of metal and plastic

　　Fully water-based production and efficient environmentally friendly recycling are core technologies

　　Lu Zhide, general manager of GRST, said that water-based production and recovery, regeneration and reuse are the core technologies of GRST. Relying on such technology, the power batteries produced by GRST can be completely produced greenly, using water-based non-toxic processes throughout the process, without producing any pollution. And the battery can achieve comprehensive green recycling under low-carbon and energy-saving technology.

　　Slurry mixing

　　Electrode coating

　　Water-based process can be said to be the key word of GRST batteries, and the most mysterious thing is that they use a single water-based binder to mix the positive and negative electrode materials of the battery, and then use water-based processes for production throughout the process. The materials and processes are green and pollution-free. , ensuring green production and a large proportion of environmentally friendly recycling and reuse at the end of the battery life cycle.

　　water flow separation

　　GRST showed us their ongoing recycling trials. Whether it is aqueous dissolution or material crushing and regeneration, including the water used to soak the batteries, it can be recycled and reused without producing wastewater to pollute the environment. "We use water to physically separate battery waste and directly recycle high-value battery materials; we use low-temperature processes to reduce carbon dioxide emissions. In this recycling process, the process cost is lower." GRST technical director Wang Ranshi said that compared with other battery recycling technologies, GRST uses only 1/4 of the process cost but can obtain 140% higher recycled material value than traditional methods. The carbon emissions during the whole process are only equivalent to 1/8 of the existing recycling process, and the size of the recycling scale does not affect the efficiency, so it can be used in different regions and even small towns.

　　drying

　　Rolling

　　Better performance

　　Wang Ranshi introduced that the GRST power battery production process can reduce equipment investment by 70-90% and fixed asset investment by 15-30%; it can also reduce production energy consumption by 40-50% and costs by 6-8%. "Using a simple and green material system and a fully water-based non-toxic production process is our core competitiveness." Wang Ranshi said that the green production and use of GRST did not compromise its other properties. At present, the energy density of a GRST power battery cell can reach 200-230Wh/kg; the cycle life can reach more than 3,000 times. At the site, GRST batteries also underwent acupuncture and 10V overcharge tests, showing excellent safety performance. They will not bloat or even catch fire like traditional batteries. In the 10V overcharge test, the battery temperature can even be maintained below 150˚ C. . "GRST batteries also have strong adaptability to temperature. The charge and discharge capacity can be maintained at more than 80% at -30˚ C, and the charge and discharge capacity at -40 ˚ C can be maintained at more than 45%. Under high temperature conditions of 50 ˚ C for 7 days After the standard cycle test, the capacity still remains above 99.8%. More importantly, our battery rate performance can reach the level of releasing 80% of the rated capacity within 6 minutes and charging 80% of the rated capacity within 10 minutes." In Wang Ranshi’s view, only the ability to charge and discharge quickly can fundamentally expand the application scope of lithium batteries.

　　Positive electrode regeneration

　　Lug welding

　　It is understood that GRST batteries have passed the national strong inspection and test requirements of GB/T 31484, 31485 and 31486-2015 power batteries for electric vehicles, and have also obtained classification society marine battery certification, mining product safety certification and portable electronic products. Safety certification for lithium-ion cells and battery packs. It has submitted 99 patent applications worldwide, of which 7 patents have been authorized and 2 patents are in the process of being authorized.

　　Battery formation (activation)

　　Technology licensing jointly promotes the green development of power batteries

　　"We hope to jointly promote the application of GRST technology with partners inside and outside the industry through technology licensing, and jointly promote the green cycle development of power batteries." Lu Zhide said that GRST can provide technical support and process guidance for partners, and provide processing solutions. The water-based positive and negative electrode material slurry can be produced directly by partners. It is understood that GRST is an innovative green technology company headquartered in Hong Kong. It hopes that the breakthrough and sustainable water-based manufacturing and recycling battery technology WATMAR3 it has developed can be applied in a wider range of countries and regions around the world.

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