Framework structured Na4Mn4Ti5O18 as an electrode for Na-ion storage hybrid devices

文献情報

出版日 2015-07-07

DOI 10.1039/C5CP02866C

インパクトファクター 3.676

著者

M. Jayakumar

原文を見る

要旨

In this study, framework structured Na4Mn4Ti5O18 possessing S-shaped tunnels for sodium intercalation is reported as an electrode for hybrid sodium ion batteries. Galvanostatic cycling of Na4Mn4Ti5O18vs. Na in the voltage region from 1.5 V to 3.95 V exhibits a capacity of 102 mA h g−1 at 0.1C rate corresponding to a specific capacitance of 149 F g−1 with a capacity retention of 90% over 50 cycles. The electrochemical analysis using CV measurements revealed the charge storage involving intercalation and pseudocapacitance. For instance, total charge storage of 345 C g−1 is observed at 0.01 mV s−1, which is attributed to 63% intercalation and 37% capacitance. Na4Mn4Ti5O18 was also studied for sodium ion storage in an aqueous medium. It delivered a capacity of 36 mA h g−1 (144 F g−1) in the voltage window of 0–0.8 V.

掲載誌

Physical Chemistry Chemical Physics

CiteScore: 5.5

自己引用率: 10.3%

年間論文数: 3036

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