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Published in:
07-04-2018
One-pot synthesis and characterization of MnCO3 hierarchical micro/nano twin-spheres with superior lithium storage performances
Published in: Journal of Materials Science: Materials in Electronics | Issue 12/2018
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Abstract
In this work, we reported a one-pot method to synthesize novel MnCO3 hierarchical micro/nano twin-spheres by a simple chemical precipitation method. The structure and morphology of the obtained powder are characterized by X-ray powder diffraction and field emission-scanning electron microscopy. As anode material of lithium-ion half cells, the as-prepared MnCO3 deliver a very high capacity, extra cycling stability and excellent rate capability. The discharge capacity of 890 mAh g−1 at 0.1 C is achieved after 100 cycles, showing a great application prospect in LIBs. The higher current charge–discharge and electrochemical impedance spectroscopy data indicate that material integrity is kept along the lithium ions insertion/extraction processes. The combination of nano-sizing, multiporous, and especially, the 3-dimensional hierarchical micro/nano structures are responsible for the superior lithium storage performances.