Journal of Materials Science

, Volume 54, Issue 8, pp 6088–6097 | Cite as

Microwave-power-enabled tuning of NiCo double hydroxide nanostructures

  • Bin Luo
  • Xiong Zhang
  • Tian Xie
  • Yanping ZhouEmail author
  • Kama Huang


Microwave heating has been widely used to enhance the fabricating rate of nanomaterials in the past few decades. However, the application of interaction between microwave and chemical reaction in tuning nanomaterials morphology is yet to be explored, while strategies to manipulate material nanostructures are of great importance for enhanced function. In this work, we demonstrate the potential of microwave in tuning the morphology of nanostructured NiCo DHs by accurate temperature control through the precise design of microwave reacting system. We find that 200-W microwave irradiation gives yield to unique flower-on-sheet hierarchical structure of NiCo DHs, while microspheres are derived from oil-bath heating. Microwave power is found to play a vital role in the tuning process. When microwave power decreases to 50 W, assembled nanoflakes are obtained; when microwave power increases to 300 W, microspheres are obtained. Further, fluid permittivity is monitored and field intensity in the reacting region is simulated and found to increase with time. Taken together, it is proposed that field-induced de-solvation possibly exists and is the main tuning mechanism. When tested as electrode materials in supercapacitor, products obtained from 200 W microwave treatment show enhanced storage capacities, especially at high current density.



This work was supported by the National Natural Science Foundation of China (Grant No. 61731013), State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences (Grant No. KF2016-26), State Key Laboratory of Efficient Utilization for Low Grade Phosphate Rock and Its Associated Resources (Grant No. WFKF2017-05). The authors also appreciate the technical support for Materials Characterization from The Analytical & Testing Center of Sichuan University.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Supplementary material

10853_2019_3324_MOESM1_ESM.pdf (233 kb)
Supplementary material 1 (PDF 233 kb)


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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.College of Electronics and Information EngineeringSichuan UniversityChengduChina
  2. 2.School of Chemical EngineeringSichuan UniversityChengduChina
  3. 3.State Key Laboratory of Efficient Utilization for Low Grade Phosphate Rock and Its Associated ResourcesWengfu GroupGuiyangChina

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