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| 论文编号: |
122214O120120239 |
| 第一作者所在部门: |
705组 |
| 中文论文题目: |
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| 英文论文题目: |
Preparation and capacitive properties of nitrogen-enriched hierarchical porous carbon
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| 论文题目英文: |
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| 作者: |
马昌
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| 论文出处: |
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| 刊物名称: |
International Journal of Electrochemical Science
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| 年: |
2012
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| 卷: |
7 |
| 期: |
1 |
| 页: |
7587-7599 |
| 联系作者: |
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| 收录类别: |
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| 影响因子: |
3.729
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| 摘要: |
"Nitrogen-enriched hierarchical porous carbon was prepared from melamine-formaldehyde resin/poly
(vinyl alcohol) blend using MgO as template. The structural properties and surface chemistry were
characterized by nitrogen sorption at 77 K, transmission electron microscopy and X-ray photoelectron
spectroscopy. The results showed that the obtained carbon possessed unique hierarchical porous
structure (micropores with the size of ca. 0.85 and 1.76 nm, mesopores with the size of ca. 2.3, 9 and
50 nm, and macropores at 100~200 nm), high meso/macro-porosity (67.3~84.9%) and rich
heteroatoms (5.76~9.32 wt.% of N and 10.97~19.66 wt.% of O). Both of the porous structure and
surface chemistry could be controlled by adjusting the content of template. The electrochemical
performance was investigated by cyclic voltammetry, galvanostatic charge/discharge and impedance
spectroscopy in 6M KOH. Analysis revealed that the surface functionalities could greatly enhance the
specific surface capacitance and high meso/macro-porosity ensured high rate performance. Dou to the
highest meso/macro-porosity (84.9%) and high content of heteroatoms (7.32 wt.% of N and 10.97
wt.% of O), the sample MPM-2 showed superior electrochemical performance (specific capacitance of
224 F g
-1
, capacitance retention of 67% and specific surface capacitance of 0.64 F m
-2
). " |
| 英文摘要: |
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| 外单位作者单位: |
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| 备注: |
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