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Microwave-Assisted Synthesis of NiCo2O4 Double-Shelled Hollow Spheres for High-Performance Sodium Ion Batteries.


ABSTRACT: The ternary transitional metal oxide NiCo2O4 is a promising anode material for sodium ion batteries due to its high theoretical capacity and superior electrical conductivity. However, its sodium storage capability is severely limited by the sluggish sodiation/desodiation reaction kinetics. Herein, NiCo2O4 double-shelled hollow spheres were synthesized via a microwave-assisted, fast solvothermal synthetic procedure in a mixture of isopropanol and glycerol, followed by annealing. Isopropanol played a vital role in the precipitation of nickel and cobalt, and the shrinkage of the glycerol quasi-emulsion under heat treatment was responsible for the formation of the double-shelled nanostructure. The as-synthesized product was tested as an anode material in a sodium ion battery, was found to exhibit a high reversible specific capacity of 511 mAh g-1 at 100 mA g-1, and deliver high capacity retention after 100 cycles.

SUBMITTER: Zhang X 

PROVIDER: S-EPMC6199058 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature

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Microwave-Assisted Synthesis of NiCo<sub>2</sub>O<sub>4</sub> Double-Shelled Hollow Spheres for High-Performance Sodium Ion Batteries.

Zhang Xiong X   Zhou Yanping Y   Luo Bin B   Zhu Huacheng H   Chu Wei W   Huang Kama K  

Nano-micro letters 20171031 1


The ternary transitional metal oxide NiCo<sub>2</sub>O<sub>4</sub> is a promising anode material for sodium ion batteries due to its high theoretical capacity and superior electrical conductivity. However, its sodium storage capability is severely limited by the sluggish sodiation/desodiation reaction kinetics. Herein, NiCo<sub>2</sub>O<sub>4</sub> double-shelled hollow spheres were synthesized via a microwave-assisted, fast solvothermal synthetic procedure in a mixture of isopropanol and glycer  ...[more]

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