具有三維多級孔道結(jié)構(gòu)的石墨烯材料可以作為氧還原反應(yīng)、氧析出反應(yīng)的電催化劑,體現(xiàn)出優(yōu)異的反應(yīng)活性。在合成石墨烯的眾多方法中,化學(xué)氣相沉積法（CVD）具有良好的應(yīng)用前景,但可作為CVD法石墨烯沉積模板的材料十分有限。本文采用磷酸硅鋁分子篩（SAPO-34）用作多級孔石墨烯的沉積模板制備石墨烯材料。所得石墨烯材料可完整保留SAPO-34分子篩的立方體顆粒結(jié)構(gòu),呈現(xiàn)為由具有微孔/介孔結(jié)構(gòu)的超薄石墨烯層圍成的微米尺度空心立方體結(jié)構(gòu)。引入氨氣煅燒,可以得到原子分?jǐn)?shù)6.84%的氮摻雜量。由于具有獨特的孔結(jié)構(gòu),豐富的缺陷位點以及良好的雜原子摻雜,制得的石墨烯材料體現(xiàn)出高效的雙功能氧還原與氧析出反應(yīng)催化活性。 

【文章來源】：新型炭材料. 2017,32(06)北大核心EISCICSCD

【文章頁數(shù)】：8 頁

【文章目錄】：
1 Introduction
2 Experimental
    2.1 Material synthesis
    2.2 Characterizations
    2.3 Electrocatalytic performance evaluation
3 Results and discussion
    3.1 Templated CVD growth of hp GC on SAPO-34
    3.2 Nitrogen doping of hp GC on SAPO-34
    3.3 Bifunctional ORR/OER performanceof hp GC
4 Conclusions


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