| 氧化铋掺杂纳米二氧化锰/活性炭复合电极 |
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| 引用本文： | 李生娟,王树林,徐波,高慧峰. 氧化铋掺杂纳米二氧化锰/活性炭复合电极[J]. 化工学报, 2008, 59(2): 514-519 |
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| 作者姓名： | 李生娟 王树林 徐波 高慧峰 |
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| 作者单位： | 上海理工大学动力工程学院 |
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| 基金项目： | 上海市纳米专项(05nm05027)，上海市教委(05EE09)~~ |
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| 摘 要： | 首次应用机械振动研磨法在室温条件制备纳米活性炭电极材料，经过30 min研磨后，得到了粒度分布在30～50 nm之间的纳米活性炭（nm-AC），研究表明，这种纳米活性炭的结晶性得到了明显增强和改善，且孔径分布更趋于合理。并用溶胶-凝胶方法合成了掺杂氧化铋的纳米二氧化锰（nm-Bi-MnO 2），将其与制备的纳米活性炭制成超级电容器所需的复合电极材料。与10%二氧化锰复合的纳米活性炭电极具有最佳的充放电性能，尤其是在掺杂氧化铋的情况下比电容能量达到308 F·g-1，且随着电流增大没有显著的衰减。与此同时，用机械振动研磨法将二氧化锰与活性炭的混合物进行研磨改性，电化学分析表明，经机械振动研磨改性的二氧化锰的比电容相对较大，具有进一步提高电极材料性能的潜力。
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| 关 键 词： | 纳米活性炭 振动研磨 氧化铋掺杂纳米二氧化锰 溶胶-凝胶法 |
| 文章编号： | 0438-1157（2008）02-0514-06 |
| 收稿时间： | 2007-03-29 |
| 修稿时间： | 2007-06-19 |
Nano-bismuth oxide doped MnO2/nano-actived carbon as composite electrode materials |
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| LI Shengjuan,WANG Shulin,XU Bo,GAO Huifeng. Nano-bismuth oxide doped MnO2/nano-actived carbon as composite electrode materials[J]. Journal of Chemical Industry and Engineering(China), 2008, 59(2): 514-519 |
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| Authors: | LI Shengjuan WANG Shulin XU Bo GAO Huifeng |
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| Abstract: | Here we report the preparation of nano-actived carbon (nm-AC) electrode materials with different pore size distributions by roller vibration milling at room temperature. The mechanical vibration milling can obtain nm-AC of 30-50nm, and improve the crystalline of prepared nm-AC. Meanwhile we synthesized nano-bismuth oxide doped MnO2 by sol-gel methods. Based on a variety of measurements, such as XRD, TEM, AFM, BET, electro-chemical analysis, we experienced the microstructure and the electrochemical performance of the nano-composite electrode materials. Through analysis we found that mixing manganese dioxide materials with nm-AC in optimum weight ratio (10%) may increase the specific capacitance of nm-AC effectively. And the mixed MnO2 / active carbon raw material was modified by vibration milling. We used the composed nano-actived carbon/MnO2 electrode materials by vibration milling and sol-gel methods in super-capacitors. |
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| Keywords: | nano-actived carbon roller vibration milling nano-bismuth oxide doped MnO_2 sol-gel method |
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