Synthesis of graphene/α-Fe2O3 nanospindles by hydrothermal assembly and their lithium storage performance

被引：16
作者：
Ma, Tiantian [1 ]
Xu, Yongshan [1 ]
Sun, Li [1 ]
Liu, Xianghong [1 ,2 ]
Zhang, Jun [1 ,2 ]
机构：
[1] Qingdao Univ, Coll Phys, Qingdao 266071, Peoples R China
[2] Nankai Univ, Key Lab Adv Energy Mat Chem, Minist Educ, Tianjin 300071, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2018年 / 44卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Nanocomposites; Graphene; Batteries; Transition metal oxides; GRAPHENE OXIDE; ANODE MATERIAL; ION BATTERIES; NANOMEMBRANES;
D O I：
10.1016/j.ceramint.2017.09.182
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Nanocomposite of graphene/alpha-Fe2O3 (G/alpha-Fe2O3) nanospindles was synthesized by a simple hydrothermal assembly method followed by thermal treatment. The alpha-Fe2O3 nanospindles were evenly enwrapped by the graphene nanosheets. When evaluated as an anode for Li-ion batteries (LIBs), the G/alpha-Fe2O3 nanocomposite showed enhanced cycling performance and rate capability compared to pure alpha-Fe2O3. G/alpha-Fe2O3 retained a reversible capacity of 607 mAh g(-1) after 100 cycles at 100 mA g(-1), which is far higher than that (160 mAh g(-1)) of alpha-Fe(2)O(3)3. The superior electrochemical performance of G/alpha-Fe2O3 can be attributed to the protection effect of graphene nanosheets to accommodate the volume change of alpha-Fe2O3 during lithiation/delithiation.
引用
收藏
页码：364 / 368
页数：5
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