Preparation method for rubber stripped graphene composite electrode material
A technology of exfoliating graphene and composite electrodes, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of poor thermal stability, not widely used, poor safety, etc., to achieve the effect of shortening the distance
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Embodiment 1
[0046] Step 1 peeling off of graphite sheet
[0047] Neoprene 100g is added in the internal mixer of 0.2L, and add flake graphite crystal 30g, start the machine, after banburying 15min, take out, transfer to double-roller open mill and continue mixing 30min, the mass percent that obtains graphene is 23 % neoprene exfoliated graphene composite rubber block. (The rotational speed of the internal mixer is 40rpm; the two-wheel differential speed of the double-roller open mill is 1:1.3, and the rotational speed of the front wheel is 18.6rpm,)
[0048] Step 2 Lithium iron phosphate mechanically mixed in
[0049] The graphene content prepared in step 1 is weighed to be 23% neoprene exfoliated graphene composite rubber block 100g, put into the roller of the roller machine in operation, roll and wrap the roller (within 1min), gradually add lithium iron phosphate powder Mix 140g of dioctyl phthalate and 30ml of dioctyl phthalate, mix and roll for 30 minutes, during which time all the ...
Embodiment 2
[0065] Step 1 peeling off of graphite sheet
[0066] 100g of nitrile rubber is added in the internal mixer of 0.2L, and add flake graphite crystal 40g, start the machine, after banburying 15min, take out, transfer to double-roller open mill and continue mixing 50min, obtain graphene mass percent content to be 28.6 % nitrile rubber exfoliated graphene composite rubber block.
[0067] Step 2 Lithium iron phosphate mechanically mixed in
[0068]The graphene content that takes step 1 preparation is 28.6% nitrile rubber exfoliation graphene composite glue block 100g, puts into the roll wheel in the operation, mixes and wraps the roll, gradually adds lithium iron phosphate powder 114g and adjacent Dioctyl phthalate 15ml, mixed and rolled for 15 minutes, during which all the lithium iron phosphate powder spilled outside the roller was returned to the opposite roller and mixed into the colloid, and then made into a triangular bag 10 times, thinly passed out to form a uniform Graphen...
Embodiment 3
[0079] Step 1 peeling off of graphite sheet
[0080] 100g of natural rubber is added in the internal mixer of 0.2L, and 20g of expandable graphite crystals are added, the machine is turned on, after banburying for 10min, it is taken out, and it is transferred to a double-roller open mill to continue mixing for 50min to obtain a graphene oxide mass percentage content of 16.8% natural rubber exfoliated graphene oxide composite rubber block.
[0081] Step 2 Lithium manganese oxide mechanically mixed in
[0082] The graphene oxide content prepared in step 1 is weighed to be 16.8% natural rubber exfoliated expandable graphite composite rubber block 100g, put into the roller of the double-roll machine in operation, roll and wrap the roll, gradually add lithium manganate powder 84g and Dioctyl phthalate 5ml, mixed and rolled for 10 minutes, during which all the lithium iron phosphate powder spilled outside the roller was returned to the opposite roller and mixed into the colloid, an...
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