A facile polymer-pyrolysis preparation of submicrometer CoMoO4 as an electrode of lithium ion batteries and supercapacitors

In the present work, submicrometer CoMoO4 is successfully prepared by a facile polymer-pyrolysis method. The phase, structure, composition and morphology of the obtained sample are characterized by several techniques. The proper reaction temperature is 600 degrees C. As an anode material of lithium half-battery, the sample prepared at 600 degrees C exhibits a stable reversible capacity of 667.6 mAh g(-1) at a current density of 0.2 A g(-1). A 96.7% capacity retention is observed between 10 and 100 cycles, where lithium storage reaction is dominated by ionic diffusion, and the diffusion coefficient of lithium ion is about 0.12 x 10(-15) cm(2) s(-1). As electrode of supercapacitors, a high specific capacitance of around 304.6 F g(-1) is achieved at a current density of 0.5 A g(-1) after 1000 cycles. Therefore, the polymer-pyrolysis method shows great promise in preparing the CoMoO4.

Automated summary

In this study, submicrometer CoMoO4 was successfully prepared using a facile polymer-pyrolysis method, showing promising performance as an anode material in lithium ion batteries and as an electrode in supercapacitors with good cycling stability.