FeF3 microspheres anchored on reduced graphene oxide as a high performance cathode material for lithium ion batteries

被引：35
作者：
Jung, Hyeyoon [1 ]
Song, Heejin [1 ]
Kim, Taegyeong [1 ]
Lee, Jung Kyoo [2 ]
Kim, Jongsik [1 ]
机构：
[1] Dong A Univ, Dept Chem, Busan 604714, South Korea
[2] Dong A Univ, Dept Chem Engn, Busan 604714, South Korea
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 647卷
关键词：
Li-ion batteries; Cathode; Iron trifluoride; Microspheres; Reduced graphene; EXCELLENT CYCLE PERFORMANCE; IRON FLUORIDE; ELECTROCHEMICAL PERFORMANCE; REDUCTION; FACILE; NANOCRYSTALS; FABRICATION; NANOCOMPOSITES; CHALLENGES; COMPOSITE;
D O I：
10.1016/j.jallcom.2015.06.191
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：
FeF3 microspheres/reduced graphene oxide (r-GO) composites were synthesized by a simple hydrothermal route with HF vapor. The size of the microspheres was controllable simply by adjusting the amount of graphene oxide in the precursor solution from about 1 to 10 wt%. The FeF3 microspheres/r-GO composites showed improved discharge capacity and cycling stability in the voltage ranges of 1.5-4.5 V and 2.0-4.5 Vat room temperature compared to those of bulk FeF3. For example, the composites delivered an initial discharge capacity of about 196 mAhg(-1) at a rate of 0.1C with 0.28% fading per cycle during 50 cycles in the range of 2.0-4.5 V. The composites also showed significantly enhanced rate capabilities in the range of 0.1-20C (e.g., about 170 mAhg(-1) at a rate of 1C). (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：750 / 755
页数：6
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