A New Generation Of Lithium Technology - Dry Electrode

The original state of PTFE micelle is 0.5mm diameter microsphere, mixed with active substance and conductive agent in low temperature environment, the mixture is spun by Mach 1.85 supersonic fiber machine PTFE micelle, in the process of spinning the active substance and conductive agent are trapped at the same time, forming a viscous material similar to cotton candy. After hot pressing, the PTFE fibers in the sticky micelle were bonded and crystallized to form a stable carbon film electrode


 Advantages and challenges of traditional coating processDry electrode advantages
Advantages: 1.Dry
(1)High technology maturity;    Without any solvent, simply by binder fiber preparation sheet into use; 
(2)Complete industrial chain support; 2.Thick 
(3)High energy density。    Electrode making from thick to thin in calendaring process, more suitable to make thick electrode. 
2.Technology challenges 3.Height
(1)The use of organic solvents in the coating process does not accord with the concept of environmental protection;    Higher energy density (> 300 wh/Kg, 500 wh/Kg) in theory, more suitable for high nickel system, solid-state batteries;  Lithium supplement technology is easy to implement; 
(2)Electrode making is easy to be thin but not to be thick. It’s difficult to make thick electrode for coating process4.Low 
(3)Current collection thickness already to be bottlenecks, Cu 6μm,Al10μm; )No complex coating equipment required, lower battery production costs (cost expected to be reduced by about 10-20%), smaller plant, lower material and equipment cost 
(4)For high nickel material, LTO anode, high coating environmental control required; 5. Clean
(5) Lithium supplement technology is difficult to implement Don't need a wet coating slurry pollution, pollution-free, without drying, don’t need big volume for plant, enviroment friendly

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