Cu2S hollow spheres as an anode for high-rate sodium storage performance

被引：25

作者：

Wang, Jianbiao ^{[1
,2
]}

Okabe, Jugo ^{[2
]}

Urita, Koki ^{[2
]}

Moriguchi, Isamu ^{[2
]}

Wei, Mingdeng ^{[1
,3
]}

机构：

[1] Fuzhou Univ, Fujian Prov Key Lab Electrochem Energy Storage Ma, Fuzhou 350002, Fujian, Peoples R China

[2] Nagasaki Univ, Grad Sch Engn, 1-19 Bunkyo Machi, Nagasaki 8528521, Japan

[3] Jiangsu Collaborat Innovat Ctr Photovolat Sci & E, Changzhou 213164, Peoples R China

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2020年 / 874卷

基金：

中国国家自然科学基金;

关键词：

Cu2S; Hollow structure; Anode; Sodium ion battery; Electrochemical performance; ION BATTERY; ELECTROCHEMICAL PERFORMANCE; CUS; MICROSPHERES; COMPOSITE; INSIGHTS; CATHODE;

D O I：

10.1016/j.jelechem.2020.114523

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Cu2S hollow spheres composed of nanoparticles are synthesized via a template-free hydrothermal process in the absence of additive. The obtained Cu2S hollow spheres not only provide a large surface for contacting between electrode and the electrolyte, but also keep sufficient space for the volume variation during the sodiation/desodiation process. Consequently, as an anode for sodium ion battery, the Cu2S hollow spheres deliver a large capacity of 369 mA h g(-1) after 100 cycles at 0.2 A g(-1) and demonstrated superior rate performance (331.7 mA h g(-1) at 0.5 A g(-1), 319 mA h g(-1) at 4 A g(-1)) and long-term cycling stability (343 mA h g(-1) at 2 A g(-1) after 1000 cycles).

引用

页数：6

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