The continuous advancement of electronic devices, driven by trends toward miniaturization, reduced weight, higher integration, and multifunctionality, imposes stringent requirements on the performance of electromagnetic wave (EMW) absorbing materials. Traditional EMW absorbers, such as metals, face significant drawbacks, including high density and rigidity, which limit their broader application in EMW absorption. To overcome these issues, cellulose is employed as the matrix, incorporating nickel ferrite (NiFe