| Nd2Fe14B/PANI磁粉的合成、表征及氧传递作用 |
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| 引用本文： | 史继诚,徐洪峰,卢璐,傅杰.Nd2Fe14B/PANI磁粉的合成、表征及氧传递作用[J].物理化学学报,2011,27(11):2625-2631. |
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| 作者姓名： | 史继诚 徐洪峰 卢璐 傅杰 |
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| 作者单位： | College of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, Liaoning Province, P. R. China |
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| 基金项目： | 国家自然科学基金，辽宁省高校优秀人才支持计划 |
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| 摘 要： | 经球磨和原位聚合法合成了Nd2Fe14B/PANI磁粉,采用X射线衍射（XRD）、傅里叶变换红外（FTIR）光谱、扫描电镜（SEM）、振动样品磁强计（VSM）对样品进行了表征,用电化学三电极体系和锌空电池考察了Nd2Fe14B/PANI材料在氧传递中的作用.结果表明:Nd2Fe14B/PANI是一维片状纳米材料,电导率0.54 S·cm-1,内禀矫顽力和剩余磁化强度为149.57 kA·m-1、20.27A·m2·kg-1;Nd2Fe14B/PANI负载密度为0.40 mg·cm-2时,磁性电极的双电层电容增大,传荷电阻减小,磁性锌空电池的极化电流较大;负载密度为3.60 mg·cm-2时,磁性电极的双电层电容减小,传荷电阻增大,磁性锌空电池的极化电流较小.Nd2Fe14B/PANI负载密度小于0.89 mg·cm-2时,微磁场促进氧的传质,提高锌空电池的放电性能;高于3.56 mg·cm-2时,微磁场抑制氧的传质,降低锌空电池的放电性能;Nd2Fe14B/PANI中的PANI提高锌空电池的放电性能.
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| 关 键 词： | 磁场 双电层电容 传荷电阻 氧传递 锌空电池 |
| 收稿时间： | 2011-07-25 |
| 修稿时间： | 2011-09-20 |
Synthesis and Characterization of Nd2Fe14B/PANI and Its Function during the Oxygen Transfer Process |
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| SHI Ji-Cheng,XU Hong-Feng,LU Lu,FU Jie.Synthesis and Characterization of Nd2Fe14B/PANI and Its Function during the Oxygen Transfer Process[J].Acta Physico-Chimica Sinica,2011,27(11):2625-2631. |
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| Authors: | SHI Ji-Cheng XU Hong-Feng LU Lu FU Jie |
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| Institution: | College of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, Liaoning Province, P. R. China |
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| Abstract: | Nd_2Fe_(14)B/PANI magnetic powder was prepared by ball milling and in-situ polymerization.The samples were characterized by X-ray powder diffraction(XRD),Fourier transform infrared(FTIR) spectroscopy,scanning electron microscopy(SEM),and vibrating sample magnetometer(VSM).The function of Nd_2Fe_(14)B/PANI in the oxygen transfer process was determined using an electrochemical three electrode system and a zinc air battery.The results showed that Nd_2Fe_(14)B/PANI was a one-dimensional lamellar nanostructured ... |
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| Keywords: | Magnetic field Double electric layer capacitance Charge transfer resistance Oxygen transfer Zinc air battery |
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