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High Rate Capability and Long Lifespan Symmetric Sodium-ion Battery System Based on Bipolar Material Na2LiV2(PO4)3/C

Abstract

Sodium ion batteries have been considered as one of the most promising candidates for large-scale energy storage systems. From the application perspective of an integrated sodium ion full-cell system, it is important to develop a practical sodium-ion full-cell system with excellent cycling life, superior safety, and good rate capability to tolerate the frequent current impulses during the grid peak period. Therefore, exploring appropriate electrode materials with excellent electrochemical properties is the key issue. Rhombohedral structured two-phase Na2LiV2(PO4)3/C nanocomposite has been successfully synthesized and employed as both cathode and anode material. It exhibits excellent electrochemical performance, including high capacity, superior rate capability, and remarkable cycling performance. In particular, it shows excellent long-term cycling stability with capacity retention of about 83 % and 100 % after 3000 cycles at 10 C, for the cathode and anode, respectively. Moreover, the symmetric sodium-ion full cells made of the Na2LiV2(PO4)3/C nanocomposite have good rate capability and cycling stability, which verifies the feasibility for practical applications of the Na2LiV2(PO4)3/C nanocomposite in sodium-ion batteries.

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Publication details

The article was received on 07 Feb 2018, accepted on 16 Apr 2018 and first published on 17 Apr 2018


Article type: Paper
DOI: 10.1039/C8TA01314D
Citation: J. Mater. Chem. A, 2018, Accepted Manuscript
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    High Rate Capability and Long Lifespan Symmetric Sodium-ion Battery System Based on Bipolar Material Na2LiV2(PO4)3/C

    M. Li, Z. Zuo, J. Deng, Q. Yao, Z. Wang, H. Zhou, W. Luo, H. Liu and S. Dou, J. Mater. Chem. A, 2018, Accepted Manuscript , DOI: 10.1039/C8TA01314D

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