One-pot hydrothermal synthesis of peony-like Ag/Ag0.68V2O5 hybrid as high-performance anode and cathode materials for rechargeable lithium batteries

被引：15

作者：

Wei, Denghu ^{[1
,2
]}

Li, Xiaona ^{[1
,2
]}

Zhu, Yongchun ^{[1
,2
]}

Liang, Jianwen ^{[1
,2
]}

Zhang, Kailong ^{[1
,2
]}

Qian, Yitai ^{[1
,2
,3
]}

机构：

[1] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China

[2] Univ Sci & Technol China, Dept Chem, Hefei 230026, Peoples R China

[3] Shandong Univ, Sch Chem & Chem Engn, Jinan 250100, Peoples R China

来源：

NANOSCALE | 2014年 / 6卷 / 10期

关键词：

TEMPLATE-FREE SYNTHESIS; SILVER VANADIUM-OXIDE; HOLLOW MICROSPHERES; V2O5; STORAGE; CONVERSION; BRONZES;

D O I：

10.1039/c4nr00250d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A peony-like Ag/Ag0.68V2O5 hybrid assembled from nanosheets with the thickness of 40 nm was synthesized through a one-pot hydrothermal approach from vanadium pentoxide (V2O5), oxalic acid (H2C2O4), and silver nitrate (AgNO3) at 180 degrees C for 24 h. The hybrid exhibits high performance as both anode and cathode materials for rechargeable lithium batteries. Electrochemical measurements revealed that the as-prepared Ag/Ag0.68V2O5 hybrid displayed excellent cycling stability, especially as an anode material. The resulting anode retains 100% of the initial capacity after 1000 cycles under a current density of 400 mA g(-1). This phenomenon may be attributed to electron conductivity improvement by the existence of metallic silver in the hybrid in addition to the convenient access to lithium ion ingress/egress because of its unique structure.

引用

页码：5239 / 5244

页数：6

共 28 条

[1] CRYSTAL STRUCTURE OF A NEW SILVER VANADIUM OXIDE BRONZE AG1-XV205 (X APPROXIMATELY 0.32) [J].