Novel synthesis of Zn2(V3O8)2 and its application to aqueous zinc-ion batteries

被引：1

作者：

Hu, Xinxin ^{[1
]}

Zhang, Fan ^{[1
]}

Tong, Xiangling ^{[2
]}

Zhong, Junyuan ^{[1
]}

Wang, Xucheng ^{[1
]}

Edalati, Kaveh ^{[3
]}

机构：

[1] Shanghai Univ Engn Sci, Sch Mat Sci & Engn, Shanghai 201620, Peoples R China

[2] Chifeng Yuntong Nonferrous Met Co Ltd, Chifeng 024000, Peoples R China

[3] Kyushu Univ, Int Inst Carbon Neutral Energy Res WPI I2CNER, Fukuoka 8190395, Japan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2024年 / 1008卷

关键词：

Aqueous zinc-ion battery; In situ conversion; VO2(M); Zn-2(V3O8)(2); Composite; ELECTROCHEMICAL PERFORMANCE; VANADIUM PENTOXIDE; INTERCALATION; CATHODE; KINETICS;

D O I：

10.1016/j.jallcom.2024.176520

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Aqueous zinc-ion batteries, with their high capacity and stable zinc anode, are a promising choice for large-scale energy storage systems. To fabricate promising cathode materials for aqueous zinc-ion batteries, the VO2(M)-C composite was designed and synthesized in this work by a simple hydrothermal reaction and high-temperature calcination. The VO2(M)-C composite undergoes an in situ electrochemical conversion during the initial cycle of activation when it is charged to 1.4-1.55 V, generating Zn-2(V3O8)(2) with large layer spacing and a stable structure. The activated cathode material exhibited high specific capacity (520.64 mA h g(-1) at 0.5 A g(-1)) and excellent cycling stability (215.17 mA h g(-1) after 1000 cycles at 20 A g(-1)). These excellent performances are mainly attributed to the high pseudo-capacitance contribution ratio as well as the good electronic conductivity and fast ionic diffusion. This study brings new prospects of designing high-performance cathode materials for aqueous zinc-ion battery.

引用

页数：9