Ding Yan-Hong, Peng Jun, Khan Shifa-Ullah, Yuan Yue
Key Laboratory of Polyoxometalate Science of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun, Jilin, 130024, P. R. China.
Chemistry. 2017 Aug 1;23(43):10338-10343. doi: 10.1002/chem.201700773. Epub 2017 Jul 13.
Organic substrates are indispensable in the fabrication of multifunctional polyoxometalate (POM)-based composites for various applications. A new molybdovanadophosphoric heteropolyacid (PMo V )-based polydopamine (PDA) composite (PMo V /PDA) is first synthesized through a facile, in situ polymerization method under hydrothermal conditions, without the addition of extra buffer solution. The obtained PMo V /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 at a current density of 100 mA g , remarkable rate capability, and good cycling stability (≈93 % capacity retention after 300 cycles at a high current density of 1000 mA g ).
有机底物在制备用于各种应用的多功能多金属氧酸盐（POM）基复合材料中不可或缺。一种新型的基于钼钒磷酸杂多酸（PMoV）的聚多巴胺（PDA）复合材料（PMoV/PDA）首先通过简便的水热条件下的原位聚合法合成，无需添加额外的缓冲溶液。所获得的PMoV/PDA复合材料呈现出均匀的微球形态。通过利用PDA的粘附能力，该复合材料可作为可充电锂离子电池的阳极材料，无需额外的粘合剂。获得了优异的电化学性能，在电流密度为100 mA g时具有915.3 mA h g的高稳定比容量、显著的倍率性能和良好的循环稳定性（在1000 mA g的高电流密度下循环300次后容量保持率约为93%）。
