Na4MnV(PO4)3-rGO as Advanced cathode for aqueous and non-aqueous sodium ion batteries

JOURNAL OF POWER SOURCES

卷:429

Article

Kumar, P. Ramesh¹  Kheireddine, Aziz¹  Nisar, Umair²  Shakoor, R. A.²  Essehli, Rachid^1,3  Amin, Ruhul¹  Belharouak, Ilias³ 

[1] Hamad Bin Khalifa Univ, Qatar Fdn, QEERI, Doha, Qatar

[2] Qatar Univ, CAM, Doha, Qatar

[3] Oak Ridge Natl Lab, Energy & Transportat Sci Div, Oak Ridge, TN 37830 USA

关键词: Aqueous electrolytes;    Sodium ion batteries;    Na4MnV(PO4)(3);    Electrochemical properties;    Impedance spectroscopy;   

DOI  :  10.1016/j.jpowsour.2019.04.080

来源: Elsevier

【 摘 要 】

NASICON-type Na4MnV(PO4)(3) with reduced graphene oxide (rGO) has been synthesized by the simple sol-gel reaction and characterized by different analytical techniques. The resulted material has been explored as a cathode material for rechargeable non-aqueous and aqueous sodium-ion batteries. In non-aqueous electrolytes, the as-synthesized Na4MnV(PO4)(3)-rGO composite shows stable discharge capacity of 86 mAh g(-1) at 0.1 C and 68 mAh g(-1) at 0.2 C after 100 cycles in half-cell and full-cell configurations, respectively. In aqueous electrolytes, it delivers an initial discharge capacity of 92 inAh g(-1) at 1 C rate in half-cells and 97 mAh g(-1) at 10 C rate in full cells having NaTi2(PO4)(3)-MWCNT as the anode. Stable cycleability and high rate capabilities of Na4MnV(PO4)(3)-rGO composite can be attributed to the very strong and sustainable conductive percolation networks for both electrons and Na+ ions. The obtained results reveal that the aqueous electrolyte cell has a huge scope for gird level energy storage applications.

【 授权许可】

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