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NiO/C的微波-輔助合成及電容性能研究
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南京工程學(xué)院

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O646

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“國家自然科學(xué)基金”、“江蘇省自然科學(xué)基金”和“南京工程學(xué)院科研啟動基金”


Microwave-assisted Synthesis of NiO/C and Its Capacitance Property
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Nanjing Institute of Technology

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    摘要:

    微波輻射具有簡單、快速的優(yōu)點, 并可提供均勻的熱量. 這種方法被用來合成有序介孔碳負載氧化鎳(NiO/C). X射線光電子能譜(XPS)證實, 微波加熱過程中Ni2+在堿性條件下被乙二醇還原為Ni單質(zhì). 與傳統(tǒng)的浸漬法相比, 該方法這大大縮短了負載時間并實現(xiàn)了定量負載. X-射線衍射(XRD), 透射電子顯微鏡(TEM), 電感耦合等離子體(ICP)和循環(huán)伏安法(CV)被用來測試樣品的物、化性能. 負載了NiO的介孔碳孔徑稍有下降, 表明納米粒子嵌入介孔碳的孔壁. 然而, 負載了適量NiO后的碳仍保留完整的介孔結(jié)構(gòu)及較大的比表面積. ICP數(shù)據(jù)顯示了微波-輔助法負載NiO的高效性. 超過400 F?g-1的高比電容和高電化學(xué)穩(wěn)定性再次證明了該負載方法良好的應(yīng)用前景.

    Abstract:

    Microwave irradiation has advantages of being simple, quick and provides uniform heat. Such method was used for supporting metal oxides on ordered mesoporous carbon (OMC), which was named as NiO/C. Microwave assisted heating process involved Ni2 being reduced by glycol under alkaline surroundings. This greatly shortened supporting time and provided quantificational support when comparing with conventional impregnation method. X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), transmission electron microscopy (TEM), nitrogen adsorption, inductively coupled plasma (ICP) and cyclic voltammetry (CV) were employed to characterize the samples. Slightly reduce of pore size showed that nanoparticles were embedded on the pore wall of OMC. However, retaining ordered mesostructure and large surface area with appropriate NiO content were confirmed by XRD, TEM and nitrogen sorption. The data of ICP showed high supporting efficiency in microwave-assisted method. A great specific capacitance over 400 F?g-1 and high electrochemical stability implied favorable application prospect for this supporting method.

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張傳香. NiO/C的微波-輔助合成及電容性能研究[J].稀有金屬材料與工程,2016,45(5):1093~1099.[Zhang Chuanxiang. Microwave-assisted Synthesis of NiO/C and Its Capacitance Property[J]. Rare Metal Materials and Engineering,2016,45(5):1093~1099.]
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  • 收稿日期:2014-04-14
  • 最后修改日期:2014-09-21
  • 錄用日期:2014-11-20
  • 在線發(fā)布日期: 2016-06-02
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