Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10154730 | Solid State Ionics | 2018 | 9 Pages |
Abstract
Na1.5â¡0.5Mn1.5Fe1.5(PO4)3 (where â¡ denotes vacancies) microrods were obtained through a solvothermal synthesis in ethylene glycol. The combination of the XRD, Mössbauer and magnetic analyses confirm that the sodium vacancies in the Na1.5â¡0.5Mn1.5Fe1.5(PO4)3 structure are linked to the oxidation of Mn and Fe transition metals. The electrochemical tests have shown that Na1.5â¡0.5Mn1.5Fe1.5(PO4)3 is a dual electrode material for Li-ion batteries. The electrochemical study in the potential range of 1.5-4.5â¯V indicate that such material can be used as 3â¯V cathode with specific capacities of 109, 97, and 80â¯mAh·gâ1 at current densities of 5, 10, and 20â¯mA·gâ1, respectively. When it is tested in the potential range of 0.03-3.0â¯V as negative electrode material, it delivers a reversible capacity of about 170â¯mAh·gâ1 at 200â¯mA·gâ1 current density during >100â¯cycles.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Claude Karegeya, Abdelfattah Mahmoud, Frédéric Hatert, Rudi Cloots, Bénédicte Vertruyen, Pierre Emmanuel Lippens, Frédéric Boschini,