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| 论文编号: |
122214O120120124 |
| 第一作者所在部门: |
709组 |
| 中文论文题目: |
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| 英文论文题目: |
Chemically derived graphene-metal oxide hybrids as electrodes for electrochemical energy storage: pre-graphenization or post-graphenization?
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| 论文题目英文: |
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| 作者: |
陈成猛
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| 论文出处: |
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| 刊物名称: |
Journal of Materials Chemistry
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| 年: |
2012
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| 卷: |
22 |
| 期: |
28 |
| 页: |
13947-13955 |
| 联系作者: |
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| 收录类别: |
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| 影响因子: |
5.968
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| 摘要: |
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. |
| 英文摘要: |
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