Constructing Sb-O-C bond to improve the alloying reaction reversibility of free-standing Sb2Se3 nanorods for potassium-ion batteries

被引：102

作者：

Yang, Zihao ^{[1
,2
]}

Li, Wenbin ^{[1
,2
,3
]}

Zhang, Gaini ^{[1
,2
]}

Wang, Jingjing ^{[1
,2
]}

Zuo, Jiaxuan ^{[1
,2
]}

Xu, Quan ^{[1
,2
]}

Shan, Hui ^{[1
,2
]}

He, Xianfeng ^{[4
]}

Lv, Mengfei ^{[1
,2
]}

Hu, Junhua ^{[5
]}

Huang, Wei ^{[1
,2
]}

Zhang, Jiujun ^{[1
,2
,6
]}

Li, Xifei ^{[1
,2
]}

机构：

[1] Xian Univ Technol, Shaanxi Int Joint Res Ctr Surface Technol Energy, Inst Adv Electrochem Energy, Xian Key Lab New Energy Mat & Devices, Xian 710048, Shaanxi, Peoples R China

[2] Xian Univ Technol, Sch Mat Sci & Engn, Xian 710048, Shaanxi, Peoples R China

[3] Shaanxi Univ Sci & Technol, Key Lab Auxiliary Chem & Technol Chem Ind, Minist Educ, Xian 710021, Shaanxi, Peoples R China

[4] Xian Safty Energy Technol Co Ltd, Xian 710005, Shaanxi, Peoples R China

[5] Zhengzhou Univ, Ctr Int Cooperat Designer Low Carbon & Environm M, Zhengzhou 450001, Henan, Peoples R China

[6] Fuzhou Univ, Sch Mat Sci & Engn, Fuzhou 350108, Fujian, Peoples R China

来源：

NANO ENERGY | 2022年 / 93卷

基金：

中国国家自然科学基金;

关键词：

Free-standing electrodes; Sb-O-C bonds; Electrochemical kinetics; Structural stability; Potassium-ion batteries; REDUCED GRAPHENE OXIDE; ANODE MATERIAL; COMPOSITE; CARBON; FILM; ELECTRODE;

D O I：

10.1016/j.nanoen.2021.106764

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：

Sb2Se3 shows some promising potentials for potassium-ion batteries (PIBs) due to its high theoretical capacity induced by conversion and alloying reaction, but the poor alloying reaction reversibility severely limits battery performance. Herein, flexible Sb2Se3 nanorods supported by holey rGO composite membranes (Sb2Se3@h-rGO) are prepared by a direct vacuum filtration and subsequent reduction process, where the pre-electrostatic interaction of Sb3+ and O-2 urges the formation of Sb-O-C bonds between Sb2Se3 nanorods and h-rGO. When employed as anode for PIBs, free-standing Sb2Se3@h-rGO electrodes exhibit excellent cycling stability with a high capacity of 382.8 mA h g(-1) at 100 mA g(-1) after 500 cycles. It is demonstrated that Sb-O-C bonds can dramatically enhance the alloying reaction reversibility, electrochemical kinetics and structural stability of Sb2Se3 nanorods upon cycling.

引用

页数：12

共 51 条

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