Table 2. Comparison of the EM Shielding Performance of CuS/RGO Nanocomposites with Other Reported CuS Electrode Materials.

materials	thickness (mm)	frequency range	EMI SE/RL performance
CuS-PAN34	247	30–1500 MHz	EMI SE: 25–27 dB
PANI-CuS35	3	300 kHz to 3 GHz	EMI SE: −45.2 dB at 2.78 GHz
“wool-ball”-like hollow CuS (30 wt %)/PVDF43	3	2–18 GHz	EMI SE: 44 dB at 18 GHz
flower-like CuS (28.6% wt) in waterborne polyacrylate32	0.5	300 kHz to 3 GHz	EMI SE: 27–31 dB
CuS (30 wt %)/paraffin33	1.8	2–18 GHz	RLmin : –31.5 dB (16.7 GHz)
CuS (5 wt %)/PVDF36	3.5	2–18 GHz	RLmin : –102 dB (7.7 GHz)
RGO/CuS/PVDF39	2.0	2–18 GHz	RLmin : −34.5 dB (12.0 GHz)
RGO + MWCNT + CuS40	1	12–18 GHz	EMI SE: ∼−25 dB
hierarchical nanostructured CuS41	3.5	2–18 GHz	RLmin : –76.4 dB (12.64 GHz)
CuS nanoplatelets/PVDF37	2.5	2–18 GHz	RLmin : –29.66 dB (10.90 GHz).
CuS nanoflakes (20 wt %) on magnetically decorated graphene44	2.5	2–18 GHz	RLmin : –54.5 dB (11.4 GHz)
CuS/RGO nanocomposite, our work	1	2–8 GHz	EMI SE: 64 dB at 2.3 GHz