Scalable Room-Temperature Synthesis of Multi-shelled Na3(VOPO4)2F Microsphere Cathodes

被引：239

作者：

Qi, Yuruo ^{[1
,2
,3
]}

Tong, Zizheng ^{[1
,2
]}

Zhao, Junmei ^{[1
]}

Ma, Lu ^{[4
]}

Wu, Tianpin ^{[4
]}

Liu, Huizhou ^{[1
]}

Yang, Chao ^{[1
]}

Lu, Jun ^{[4
]}

Hu, Yong-Sheng ^{[3
]}

机构：

[1] Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Chinese Acad Sci, Key Lab Renewable Energy, Beijing Key Lab New Energy Mat & Devices, Beijing Natl Lab Condensed Matter Phys,Inst Phys, Beijing 100190, Peoples R China

[4] Argonne Natl Lab, Chem Sci & Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA

来源：

JOULE | 2018年 / 2卷 / 11期

基金：

北京市自然科学基金; 中国国家自然科学基金;

关键词：

SODIUM-ION BATTERIES; HIGH-PERFORMANCE CATHODE; HOLLOW MICROSPHERES; VANADIUM FLUOROPHOSPHATES; ELECTRODE MATERIALS; CRYSTAL-STRUCTURE; EXTRACTION; OXIDATION; INTERIORS; REDUCTION;

D O I：

10.1016/j.joule.2018.07.027

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

The large-scale application of rechargeable batteries in electric vehicles and energy-storage systems is still hindered by their high cost, particularly from the active materials. Here we proposed a concept of integration of extraction-separation and materials-preparation to further reduce the materials' cost. The power of this concept was demonstrated by the large-scale room-temperature synthesis (150 g per batch) of multi-shelled Na-3(VOPO4)(2)F microspheres based on in situ generated bubbles as soft templates. The as-prepared Na-3(VOPO4)(2)F shows superior rate capability with discharge capacity of 81 mAh g(-1) at 15 C current rate and capacity retention of 70% after 3,000 cycles. Ex situ UV-vis was first employed to characterize the variation of oxidation state for vanadium during the charging and discharging process. This is the first report of a rapid and facile large-scale room-temperature controllable synthesis of Na-3(VOPO4)(2)F microspheres, and this approach could be extended to synthesize other similar compounds.

引用

页码：2348 / 2363

页数：16

共 58 条

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