Highly Ordered Mesoporous Few-Layer Graphene Frameworks Enabled by Fe3O4 Nanocrystal Superlattices

被引:114
作者
Jiao, Yucong [1 ,2 ]
Han, Dandan [1 ,2 ]
Liu, Limin [3 ,4 ]
Ji, Li [1 ,2 ]
Guo, Guannan [3 ,4 ]
Hu, Jianhua [3 ,4 ]
Yang, Dong [3 ,4 ]
Dong, Angang [1 ,2 ]
机构
[1] Fudan Univ, Collaborat Innovat Ctr Chem Energy Mat, Shanghai Key Lab Mol Catalysis & Innovat Mat, Shanghai 200433, Peoples R China
[2] Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China
[3] Fudan Univ, Collaborat Innovat Ctr Polymers & Polymer Composi, State Key Lab Mol Engn Polymers, Shanghai 200433, Peoples R China
[4] Fudan Univ, Dept Macromol Sci, Shanghai 200433, Peoples R China
基金
对外科技合作项目(国际科技项目); 美国国家科学基金会;
关键词
graphene; lithium; mesoporous materials; nanostructures; self-assembly; LITHIUM-ION BATTERIES; CHEMICAL-VAPOR-DEPOSITION; GRAPHITIC PORE WALLS; CARBON MATERIALS; MONODISPERSE NANOCRYSTALS; ANODE MATERIAL; STORAGE; NANOSHEETS; NANOTUBES; TEMPLATE;
D O I
10.1002/anie.201501398
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
While great progress has been achieved in the synthesis of ordered mesoporous carbons in the past decade, it still remains a challenge to prepare highly graphitic frameworks with ordered mesoporosity and high surface area. Reported herein is a simple synthetic methodology, based on the conversion of self-assembled superlattices of Fe3O4 nanocrystals, to fabricate highly ordered mesoporous graphene frameworks (MGFs) with ultrathin pore walls consisting of three to six stacking graphene layers. The MGFs possess face-centered-cubic symmetry with interconnected mesoporosity, tunable pore width, and high surface area. Because of their unique architectures and superior structural durability, the MGFs exhibit excellent cycling stability and rate performance when used as anode materials for lithium-ion batteries, thus retaining a specific capacity of 520 mAh g(-1) at a current density of 300 mA g(-1) after 400 cycles.
引用
收藏
页码:5727 / 5731
页数:5
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