Study of reflection process for nickel coated activated carbon fiber felt applied with electromagnetic interference shielding

Nickel coated activated carbon fiber felt (Ni-ACFF) are known as excellent materials for electrostatic dissipation and electromagnetic interference (EMI) shielding. The deposition of metallic nickel on ACFF was investigated to obtain reproducible and singular materials capable of electromagnetic radiation shielding from 8.2 to 12.4 GHz (X-band). Homogeneous films and fixed quantity of nickel with simple processability were obtained by using the electrodeposition method controlling the experimental parameters, such as, deposition time and current. The relative nickel amount that was controlled from the deposition time and applied current determined the efficiency on reflectivity efficiency with at around 93.7 % of the reflected electromagnetic radiation at ˜8.2 GHz. Keywords: nickel electrodeposition, activated carbon fiber, electromagnetic shielding interference