Chemistry - A European Journal
Chemistry - A European Journal
5 years ago

A New Polyoxometalate (POM)-Based Composite: Fabrication through POM-Assisted Polymerization of Dopamine and Properties as Anode Materials for High-Performance Lithium-Ion Batteries

A New Polyoxometalate (POM)-Based Composite: Fabrication through POM-Assisted Polymerization of Dopamine and Properties as Anode Materials for High-Performance Lithium-Ion Batteries
Yue Yuan, Shifa-Ullah Khan, Jun Peng, Yan-Hong Ding
Organic substrates are indispensable in the fabrication of multifunctional polyoxometalate (POM)-based composites for various applications. A new molybdovanadophosphoric heteropolyacid (PMo10V2)-based polydopamine (PDA) composite (PMo10V2/PDA) is first synthesized through a facile, in situ polymerization method under hydrothermal conditions, without the addition of extra buffer solution. The obtained PMo10V2/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). Polyoxometalate composite anode: Polyoxometalate (POM)-assisted in situ polymerization of dopamine is an effective method for the fabrication of POM and polydopamine (PDA) composite materials. The obtained PMo10V2/PDA composite (see figure) can be exploited as a binder-free anode material for high-performance lithium-ion batteries, with remarkable rate capability and good cycling stability.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/chem.201700773

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