Superior Na‐Storage Performance of Low‐Temperature‐Synthesized Na3(VO1−xPO4)2F1+2x (0≤x≤1) Nanoparticles for Na‐Ion Batteries. Issue 34 (15th July 2015)

• Record Type: Journal Article
• Authors: Qi, Yuruo; Mu, Linqin; Zhao, Junmei; Hu, Yong‐Sheng; Liu, Huizhou; Dai, Sheng
• Is Part Of: Angewandte Chemie international edition. Volume 54:Issue 34(2015)
• Page Start: 9911
• Page End: 9916
• Publication Date: 2015-07-15
• Subjects: cathode -- Na3(VOPO4)2F -- Na‐ion batteries -- nanoparticles -- solvothermal synthesis; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201503188
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: Na‐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‐scale application. Here, a series of nanosized high‐performance cathode materials, Na3 (VO1− x PO4 )2 F1+2 x (0≤ x ≤1), has been synthesized by a solvothermal low‐temperature (60–120 °C) strategy without the use of organic ligands or surfactants. The as‐synthesized Na3 (VOPO4 )2 F nanoparticles show the best Na‐storage performance reported so far in terms of both high rate capability (up to 10 C 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 F1+2 x is by far one of the least expensive and energy‐consuming methods, much superior to the conventional high‐temperature solid‐state method. Abstract : A solvothermal low‐temperature strategy was used for the synthesis of a series of Na3 (VO1− x PO4 )2 F1+2 x (0≤ x ≤1) nanoparticles. The as‐synthesized Na3 (VOPO4 )2 F shows the best Na‐storage performance in terms of both high rate capability (up to 10 C rate) and long cycle stability over 1200 cycles reported so far.