Nanostructured intermetallic FeSn2-carbonaceous composites as highly stable anode for Na-ion batteries

被引:38
作者
Edison, Eldho [1 ]
Satish, Rohit [1 ]
Ling, Wong Chui [2 ]
Bucher, Nicolas [3 ]
Aravindan, Vanchiappan [2 ]
Madhavi, Srinivasan [1 ,2 ,3 ]
机构
[1] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore
[2] Nanyang Technol Univ, Energy Res Inst NTU ERI N, Singapore 637553, Singapore
[3] TUIVI CREATE, Singapore 138602, Singapore
关键词
Iron-tin inter metallic; Carbon composites; Anodes; Sodium-ion battery; LONG CYCLE LIFE; CARBON-COATED LITI2(PO4)(3); NEGATIVE ELECTRODE MATERIAL; HIGH-CAPACITY; LITHIUM-ION; ELECTROCHEMICAL PERFORMANCE; STORAGE PERFORMANCE; ENERGY-STORAGE; SODIUM; INSERTION;
D O I
10.1016/j.jpowsour.2017.01.068
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
The commercialization of Na-ion batteries demands the development of technologically feasible and economically viable electrodes, in particular anodes. Herein, we report the facile synthesis of nano structured FeSn2 by a hydrothermal route and the formulation of composites with different carbonaceous materials like Super P, graphite, and graphene via high-throughput ball-milling. The influence of the carbonaceous matrix on the electrochemical performance of the alloy anode is investigated in half-cell assembly. Amongst, FeSn2-Graphite composite exhibits excellent cycling stability with a reversible capacity of 333 mAh g(-1) obtained after 100 cycles at a specific current of 100 mA g(-1). The composite also displayed a good rate performance even at high current rates of 1 A g(-1) which is a desirable feature for high power applications such as hybrid electric vehicles. The outstanding electrochemical performance of the composite anodes is ascribed to the effective encapsulation of the alloy particles in the carbonaceous matrix, which sustains the volume change and facilitates excellent Na-storage capability. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码:296 / 302
页数:7
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