Metal-organic framework derived flower-like FeS/C composite as an anode material in lithium-ion and sodium-ion batteries

被引:48
作者
Yao, Yingying [1 ]
Zheng, Junchao [1 ]
Gong, Zhuyue [1 ]
Ding, Zhiying [2 ]
Zhang, Jie [1 ]
Yu, Wanjing [1 ]
Bengono, D. A. Mifounde [1 ]
Li, Hui [1 ]
Zhang, Bao [1 ]
Tong, Hui [1 ]
机构
[1] Cent S Univ, Sch Met & Environm, Changsha 410083, Hunan, Peoples R China
[2] Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China
基金
中国博士后科学基金; 中国国家自然科学基金;
关键词
Ferrous sulfide; Metal-organic framework; Composite; Lithium-ion batteries; Sodium-ion batteries; REDUCED GRAPHENE OXIDE; HIGH-PERFORMANCE ANODE; CATHODE MATERIAL; ELECTROCHEMICAL PERFORMANCE; CYCLING STABILITY; CARBON; NANOSHEETS; NANOCOMPOSITE; MICROSPHERES; CHALLENGES;
D O I
10.1016/j.jallcom.2019.03.098
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
Among all the metal sulfides, iron sulfide (FeS) possesses the advantages of low-cost, environmentally-sound, and with high capacity. However, the large volume expansion during the electrochemical reaction process and the poor electrical conductivity limit its further application. In this work, flower-like FeS/C derived from metal-organic framework material was first synthesized through dopamine coating, hydrothermal sulfurization and thermal reduction methods. In the composite, FeS nanoparticles and carbon were compounded together and formed a stable laminated structure, and the FeS nanoparticles were encapsulated by carbon. FeS/C composites with different contents of dopamine coating showed different morphologies. Among the composite electrodes, FeS/C-2 electrode exhibited the best electrochemical performance. When tested for half-cells in LIBs, the FeS/C-2 electrode exhibited an initial discharge capacity of 994.4 mAh.g(-1) at the current density of 0.1 A g(-1), and with a capacity retention of about 77.3% after 100 cycles. When tested for half-cells in SIBs, the initial discharge capacities of the composite electrode were as high as 809.7 and 403.2 mAh.g(-1), at a current density of 1 and 4 A g(-1), respectively. In the carbon wrapped FeS composite with laminated structure, the path ways of the electrons and ions were shortened; moreover, the volume expansion of FeS was also restrained by carbon. (C) 2019 Elsevier B.V. All rights reserved.
引用
收藏
页码:288 / 295
页数:8
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