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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