Carbonized Wood/Nickel Nanoparticle Composites with Oriented Channels for Enhanced Electromagnetic Interference Shielding

作者：Dai, Zhenhua; Hu, Chuanshuang^*; Li, Yuanjie; Wang, Zhuoqun; Wei, Yuyi; Zhang, Weiwei; Xu, Jiangtao; Fu, Shiyu; Lin, Xiuyi^*

来源：ACS Applied Nano Materials, 2023, 6(14): 13646-13655.

DOI：10.1021/acsanm.3c02373

• carbonized wood
• orientation angles
• electromagneticinterference shielding (EMI)
• anisotropy
• NickelNanoparticles

The multiple enhancement of electromagnetic interference(EMI)shielding performance through facile operation is attractive for thefuture development of EMI shielding materials. Herein, compositesof carbonized wood and nickel (CW/Ni) with different orientation anglesare obtained by impregnation and carbonization. Benefiting from thethrough-pore structure, the shielding effectiveness (SE) of CW risesfrom 29.3 to 57.5 dB in the X-band as the orientation angle shiftsfrom 90 to 0 & DEG;. Moreover, the orientation angle of the naturalwood has an influence on the impregnation results. CW/Ni-0 & DEG; hasthe highest nickel content in the same impregnation condition, andthe SE value of CW/Ni-0 & DEG; is further improved to 76.4 dB in theX-band owing to an increase in internal reflection, graphitization,and magnetic loss. CW/Ni-0 & DEG; achieves high SSE and SSE/t via modulationof orientation angles. This work provides an effective approach toenhance the performance of shielding materials.

• 单位
  华南农业大学