Journal of Materials Science: Materials in Electronics

, Volume 29, Issue 17, pp 14643–14650 | Cite as

Influence of morphologies on the electromagnetic and microwave absorbing properties of nickel cobaltite

  • Hongyu WangEmail author
  • Peipeng Jin


Different morphologies of nickel cobaltite (NiCo2O4) nanoparticles and nanosheets were synthesized through a simple hydrothermal method and the morphologies of NiCo2O4 can be adjusted only by changing the solvent. The electromagnetic and microwave absorbing properties of NiCo2O4 with different morphologies were studied and its electromagnetic loss mechanism was illustrated. Compared with NiCo2O4 nanoparticles, NiCo2O4 nanosheets have higher electromagnetic constant due to the larger surface, which enhanced its interfacial polarization and dielectric loss ability. For NiCo2O4 nanosheets, the minimum reflection loss value was − 11 dB with the thickness of 1.4 mm, and the reflection loss value below − 5 dB can be got with the thickness from 1.4 to 1.7 mm, the results indicated that the obtained NiCo2O4 nanosheets are a kind of potential electromagnetic wave absorbent with good absorbing properties and lightweight.



This work was financed by the Natural Science Foundation of Qinghai Province under Grant No. 2018-ZJ-923Q, the Natural Science Foundation of Shaanxi Province under Grant No. 2017JQ5098, the Qinghai Provincial Innovation Platform Program (No. 2017-ZJ-Y17).


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Authors and Affiliations

  1. 1.Qinghai Provincial Key Laboratory of New Light Alloys, Qinghai Provincial Engineering Research Center of High Performance Light Metal Alloys and FormingQinghai UniversityXiningPeople’s Republic of China
  2. 2.School of Materials Science and EngineeringShaanxi University of Science and TechnologyXi’anPeople’s Republic of China

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