多级孔碳电容器电极材料的制备及表征
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摘要
在过去的二十年中,金属-有机多孔材料,由于其超高的比表面积和可调控的孔道结构,在气体的储存与分离、催化、传感、药物缓释等诸多领域都有潜在的应用前景[1]。近五年来,研究者以金属-有机多孔材料为前驱物,通过惰性气氛下的热转化得到多孔碳材料,可以很好的保留金属-有机多孔材料的孔结构和形貌,更重要的是,这类多碳材料在储能装置(锂离子电池,电容器)和甲烷储存等方面有着更好的应用前景[2-5]。本文选择了一种具有高稳定性的类沸石微孔金属-有机多孔材料为前驱体,得到了具有微孔和介孔两种孔结构的碳材料,该材料表现出较好的双电层电容电极的性能(283.4 F·g~(-1)at 0.2 mA·g~(-1))。
In the last two decades,metal-organic frameworks(MOFs) have attracted much attention for their high surface area,tunable porosity,and wide potential applications in many different fields.In the last five years,MOFs have been proven to be sacrificial templates to construct porous carbons via thermal conversion.More importantly,porous carbons derived from MOFs may be favorably considered for energy related storage,such as supercapacitor electrodes,lithium ion battery,and methane storage.In this work,we have elaborately chosen chemically and thermally robust as well as highly porous zeolite-like MOFs as precursors to prepare a hierarchical porous carbon,which exhibits a high specific capacity and excellent cycling performance as electrode materials for EDLCs.
引文
[1]Luo,X.L.;Cao,Y.;Wang,T.;Li,G.H.;Li,J.G.;Yang,Y.G.;Xu,Z.X.;Zhang,J.;Huo,Q.S.;Liu,Y.L.;Eddaoudi,M.J.Am.Chem.Soc.2016,138:786.
    [2]Lin,K.Y.A.,Hsu,F.K.,RSC Adv.,2015,5:50790.

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