Graphite Anode Material Doped with Micro-nano Porous Si-Ag Particles and its Electrical Properties.

In order to solve the problem of low charge and discharge efficiency in graphite anode materials for lithium-ion batteries, low-cost artificial graphite can be used and doped WILL micro-nano porous Si-Ag particles to improve the conductivity of graphite and increase the efficiency of charge and discharge. The micro-nano porous Si-Ag powder !s prepared via chemical etching method, and ball mill 70% artificial graphite and 30% porous S-Ag powder to form a sandwiched composted structure. SEM,TEM,XRD and battery testing systems were used to characterize and test porous S-Ag powder material. According to the research results, the silicon parities have a of 720 nm after high-energy ball milling; under the etching conditions of 80, the obtained micro-nano porous S-Ag anode material has a charge discharge specific capacity of 2 163. 28 mAh/g;doped with porous S-The first charge and discharge specific cupidity of the graphite negative electrode after Ag particles can reach 1 227. 966 mAh/g, which !s 341. 1% higher than that of pure graphite anode material that a current density of 0. 2 C(1 C= 1 500 mA/g), The retention rate of the cupidity after 100 cycles is 59. 72%. [ABSTRACT FROM AUTHOR]