English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Chemically derived graphene-metal oxide hybrids as electrodes for electrochemical energy storage: pre-graphenization or post-graphenization?

MPS-Authors
/persons/resource/persons32682

Chen,  Chenmeng
Key Laboratory of Carbon Materials, Institute of Coal Chemistry, Chinese Academy of Sciences;
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons22292

Zhang,  Qiang
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;
Beijing Key Laboratory of Green Reaction Engineering and Technology, Department of Chemical Engineering;

/persons/resource/persons22294

Zhang,  Wei
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons22300

Zhao,  Xiao-Chen
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;
State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Science;

/persons/resource/persons32770

Huang,  Chun-Hsien
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;
Department of Biomedical Engineering and Environmental Sciences, National Tsing-Hua University;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)

c2jm16042k.pdf
(Publisher version), 2MB

Supplementary Material (public)
There is no public supplementary material available
Citation

Chen, C., Zhang, Q., Huang, J.-Q., Zhang, W., Zhao, X.-C., Huang, C.-H., et al. (2012). Chemically derived graphene-metal oxide hybrids as electrodes for electrochemical energy storage: pre-graphenization or post-graphenization? Journal of Materials Chemistry, 22(28), 13947-13955. doi:10.1039/C2JM16042K.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0010-1BD2-1
Abstract
The introduction of a secondary phase is an efficient and effective way to improve the electrochemical performance of graphene towards energy storage applications. Two fundamental strategies including pre-graphenization and post-graphenization were widely employed for graphene-based hybrids. However, there is still an open question of which way is better. In this contribution, we investigated the differences in the structure and electrochemical properties of pre- and post-graphenized graphene–SnO2 hybrids. The pre-graphenization is realized by synthesis of thermally reduced graphene and subsequent impregnation of SnO2, while the post-graphenization is realized by introducing a Sn-containing phase onto GO sheets followed by chemical reduction. The pre-graphenization process provides a large amount of pores for ion diffusion, which is of benefit for loading of SnO2, fast ion diffusion for supercapacitors, and higher capacity for Li-ion batteries, but poor stability, while the post-graphenization process offers compact graphene and good interaction between the SnO2 and graphene, which provides stable structure for long term stability for supercapacitor and Li-ion battery use.