本发明提供了PEDOT@Na3(VOPO4)2F复合材料,其制备方法及其应用,该复合材料通过加入钠源,钒源,氟源和磷酸盐进行混合,进行水热处锂,煅烧处理得到纯相Na3(VOPO4)2F后,再原位聚合包覆聚乙烯二氧噻吩(PEDOT)即可得到,方法简单高效,容易扩大规模生产.利用该PEDOT@Na3(VOPO4)2F复合材料为正极制成的"摇椅"式钠离子电容...
Qi等制备了具有多壳层微观结构的Na3(VOPO4)2F微球,以15 C倍率充放电循环3000周后容量保持率仍可达70%。中空结构由于具有充足的反应位点并有效缓充材料体积变化的特点,有利于改善正极材料的倍率和循环性能。Lin等合成的Na3V2(PO4)3空心多孔微球以10 C倍率放电的初始比容量为95.6 mAh/g,以20 C倍率充放电循环500周...
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NanocubeSurface-assemblingSodium-ion batteryFlexible Na-ion storage cathodes are still very few due to the challenge in achieving both reliable mechanical flexibility and excellent electrochemical performances.Herein,a new type of flexible Na3(VOPO4)2F cathode with nanocubes tightly assembled on carbon ...
Na3(VOPO4)2F (NVOPF) is an ideal cathode for high-energy-density sodium ion batteries (SIBs), due to its impressive output voltage and stable structure. However, the high production costs and complex operation processes associated with conventional synthetic methods impede its commercial applications...
In this work, a one-step hydrothermal strategy has been developed for the synthesis of carbon-coated Na3(VOPO4)2F with the aid of biomass (e.g. glucose, fructose or starch), where biomass plays the...doi:10.1007/s12649-018-0426-3Tong Zizheng...
Na3(VOPO4)2FNa﹊on batteriesnanoparticlessolvothermal synthesisNa-ion technology is increasingly studied as a low-cost solution for grid storage applications. Many positive electrode materials have been reported, mainly among layered oxides and polyanionic compounds. The vanadium oxy/flurophosphate solid ...
The as-synthesized Na3(VOPO4)2F nanoparticles show the best Na-storage performance reported so far in terms of both high rate capability (up to 10C rate) and long cycle stability over 1200 cycles. To the best of our knowledge, the current developed synthetic strategy for Na3(VO1 x PO4)2...
The combined first-principles calculations and experimental analysis reveal the detailed structural and electrochemical mechanisms of the various compositions in solid solutions of Na3(VOPO4)2F and Na3V2(PO4)2F3. The comparative data for the Na y (VO1x PO4)2F1+2x electrodes show a clear ...
Na3(VOPO4)2FNanopartikelNatriumionen〣atterienSolvothermalsyntheseNa-ion batteries are becoming comparable to Li-ion batteries because of their similar chemical characteristics and abundant sources of sodium. However, the materials production should be cost-effective in order to meet the demand for large...