Three-Sodium Ion Activity of a Hollow Spherical Na3V2(PO4)2F3 Cathode: Demonstrating High Capacity and Stability

被引：28

作者：

Mukherjee, Ayan ^{[1
,2
]}

Sharabani, Tali ^{[1
,2
]}

Perelshtein, Ilana ^{[2
]}

Noked, Malachi ^{[1
,2
]}

机构：

[1] Bar Ilan Univ, Dept Chem, Ramat Gan, Israel

[2] Bar Ilan Inst Nanotechnol & Adv Mat, Ramat Gan, Israel

来源：

BATTERIES & SUPERCAPS | 2020年 / 3卷 / 01期

关键词：

high-voltage cathodes; cathode materials; Na3V2(PO4)(2)F-3; intercalation; sodium-ion batteries; CARBON-COATED NA3V2(PO4)(3); SODIUM-ION; ELECTROCHEMICAL PERFORMANCE; MECHANISMS; BATTERIES; ELECTRODE; VOLTAGE; OXIDE;

D O I：

10.1002/batt.201900147

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Na3V2(PO4)(2)F-3 (NVPF) is a promising cathode material for sodium ion batteries, owing to its high voltage and promising cycling profile. Nevertheless, most previous reports demonstrated only approximately 100 mAh g(-1) at limited operating voltage. Using a solvothermal synthesis route, we synthesized the NVPF cathode with a controlled architecture and spherical morphology. We used this electrode as the cathode for a sodium-ion battery and managed to intercalate/deintercalate the third Na+ ion from the structure, demonstrating a high specific capacity (197 mAh g(-1)). Long-term stability challenges of these electrodes under a wide potential regime are also presented here in.

引用

页码：52 / 55

页数：4

共 41 条

[1] Capacity fade mechanisms and side reactions in lithium-ion batteries [J].