Electrode Design for High-Performance Sodium-Ion Batteries: Coupling Nanorod-Assembled Na3 V2 (PO4 )3 @C Microspheres with a 3D Conductive Charge Transport Network

ACS Applied Materials & Interfaces
Zhiqiang LvXianfeng Li

Abstract

As one of the most promising cathodes for sodium-ion batteries, the polyanionic compounds still suffer from unsatisfactory capacity and rate performance resulting from poor electron conductivity. Furthermore, the charge-transfer kinetics, especially for Na+, becomes limiting as the mass loading increases. Herein, a robust free-standing electrode coupling optimal porous Na3V2(PO4)3@C microspheres with a bicontinuous charge transport network is designed and prepared by a simple casting method. In the design, the optimal porous carbon-coated microspheres, composed of some continuous nanorods, along with interwoven carbon nanofiber networks offer efficient electron transport and facile ion diffusion. Such an elaborate design enables impressive electron/ion conductivity, contributing to remarkable rate performance (116.1 mA h g-1 at 0.2 C; 96 mA h g-1 at 30 C) and outstanding cycling stability (90% capacity retention in 500 cycles at 1 C; 80% capacity retention in 5000 cycles at 10 C), which has surpassed other similar Na3V2(PO4)3-based free-standing electrodes as reported. More importantly, when mass loading extends to 8 mg cm-2, an excellent capacity retention of 75% at 10 C can be obtained. The research offers a new avenue into t...Continue Reading

References

Nov 20, 2001·Nature·J M Tarascon, M Armand
Sep 6, 2003·Journal of Colloid and Interface Science·Jae-Hyung ParkSeong-Geun Oh
Aug 15, 2015·Advanced Materials·Xingde XiangJun Chen
Feb 22, 2017·Advanced Materials·Zelang JianWen Chen
Mar 30, 2017·Chemical Society Reviews·Jang-Yeon HwangYang-Kook Sun
Jun 20, 2017·Angewandte Chemie·Prasant Kumar NayakPhilipp Adelhelm
Dec 18, 2019·ACS Applied Materials & Interfaces·Xu GaoXiaobo Ji

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