Homogeneous CaMoO4 microspheres with interesting nanopit morphology were prepared by a simple one-step hydrothermal method. These microspheres had a very promising alternative structure for application in Li-ion batteries (LIBs), because they combined the advantages of both the primary nanosized and secondary microsized structures. The nanopits distributed on CaMoO4 material can accommodate volume change, increase their contacting surface and wetting property with electrolyte, and improve wetting contact between CaMoO4 material and electrolyte, leading to enhanced cycling stability and electrochemical performance. Meanwhile, the robust microsphere structure can both prevent aggregation and provide high tap density. When used as an anode in LIBs, the electrodes delivered a high discharge capacity of 434 mAh/g after 50 charge–discharge cycles at a current density of 200 mA/g, showing good cycling performance.
Applied Physics A: Materials Science Processing – Springer Journals
Published: Feb 22, 2018
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