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Published on: August 12, 2013
A New Polyoxometalate (POM)-Based Composite: Fabrication through POM-Assisted Polymerization of Dopamine and
Yan-Hong Ding1, Jun Peng1, Shifa-Ullah Khan1
1Key Laboratory of Polyoxometalate Science of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun, Jilin, 130024, P. R. China.
Abstract:
Organic substrates are indispensable in the fabrication of multifunctional polyoxometalate (POM)-based composites for various applications. A new molybdovanadophosphoric heteropolyacid (PMo10 V2 )-based polydopamine (PDA) composite (PMo10 V2 /PDA) is first synthesized through a facile, in situ polymerization method under hydrothermal conditions, without the addition of extra buffer solution. The obtained PMo10 V2 /PDA composite shows homogeneous microsphere morphology. Through utilization of the adhesive ability of PDA, the composite can be used as an anode material without additional binder for rechargeable lithium-ion batteries. Excellent electrochemical performances are obtained, with a high, stable specific capacity of 915.3 mA h g-1 at a current density of 100 mA g-1 , remarkable rate capability, and good cycling stability (≈93 % capacity retention after 300 cycles at a high current density of 1000 mA g-1 ).
