A method for manufacturing conductive particles for conducting ions and electrons of a positive or negative electrode comprising the steps of:
- step 500:
- mixing and grinding a plurality of ceramic particles and a first alcohol solution under a protection of a nitrogen atmosphere by using a mill;
- step 510:
- adding a plurality of lithium fluoride (LiF) particles and an organic material into the mill;
- then mixing and grinding the lithium fluoride particles, the organic material, the ceramic particles and the first alcohol solution to form a first mixed slurry by using the mill;
- step 520:
- mixing a second alcohol solution, polyvinylpyrrolidone, sodium dodecyl sulfate, a plurality of first carbon nanotubes and a plurality of graphene sheets to form a second mixed slurry by using a first mixer;
- step 530:
- placing the second mixed slurry into the mill and then mixing and grinding the second mixed slurry and the first mixed slurry by using the mill;
- step 540:
- placing the second mixed slurry and the first mixed slurry into a rotary evaporator;
- and then removing the first alcohol solution and the second alcohol solution from the second mixed slurry and the first mixed slurry to form a mixture powder by using the rotary evaporator;
- step 550:
- placing the mixture powder into a sintering furnace and perform a sintering on the mixture powder under a nitrogen atmosphere to form a plurality of conductive particles by using the sintering furnace;
- wherein each of the conductive particles includes a corresponding ceramic particle and an amorphous carbon layer coated on an outer side of the corresponding ceramic particle;
- the amorphous carbon layer includes a plurality of corresponding lithium fluoride particles, a plurality of corresponding graphene sheets and a plurality of corresponding first carbon nanotubes;
- in the sintering, a temperature of the sintering furnace is gradually increased to a specific value;
- the organic material, the polyvinylpyrrolidone and the sodium dodecyl sulfate in the mixture powder form a plurality of amorphous carbons;
- the amorphous carbon layer is formed by the amorphous carbons and is coated on an outer surface of the corresponding ceramic particle;
- and the lithium fluoride particles, the graphene sheets and the first carbon nanotubes are dispersed within the corresponding amorphous carbon layer;
- and
- wherein each of the graphene sheets has a sheet structure;
- the graphene sheets form a multilayer structure to wrap around an outer side of the corresponding ceramic particle;
- the first carbon nanotube are dispersed in gaps between the corresponding graphene sheets and the corresponding ceramic particle and in gaps between different graphene sheets to be used as bridges between the graphene sheets and the ceramic particle;
- and the lithium fluoride particles are used as bridges for guiding the lithium ions through the conductive particle.