Facile synthesis of boron and nitrogen-doped graphene as efficient electrocatalyst for the oxygen reduction reaction in alkaline media
Facile synthesis of boron and nitrogen-doped graphene as efficient electrocatalyst for the oxygen reduction reaction in alkaline media
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轻松合成硼和氮掺杂石墨烯作为碱性介质中氧还原反应的有效电催化剂
DOI：
10.1016/j.ijhydene.2013.12.079
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发表时间：
2014-09
影响因子：
7.2
通讯作者：
Jie Wang
中科院分区：
文献类型：
--
作者：
Xiao Xu;Tao Yuan;Yingke Zhou;Yawei Li;Jiming Lu;Xiaohui Tian;Deli Wang;Jie Wang
以氧化石墨烯为原料，分别与硼酸和尿素通过热固相反应制备了硼掺杂石墨烯和氮掺杂石墨烯。采用扫描电子显微镜、红外光谱、紫外可见光谱和X射线光电子能谱对掺杂石墨烯的形貌和结构进行了表征，采用循环伏安法对掺杂石墨烯的氧还原电催化活性进行了评价。结果表明，热处理条件可以对石墨烯的形貌、结构、掺杂水平和方式进行微调，并对氧还原反应活性产生重要影响。在700 °C下煅烧的硼掺杂石墨烯和氮掺杂石墨烯由于在石墨烯中适当引入硼和氮官能团，表现出优异的电催化氧还原活性，这可能在低温燃料电池应用中有希望。
Boron-doped graphene and nitrogen-doped graphene have been respectively synthesized by a facile thermal solid-state reaction of graphene oxide with boric acid and urea. The morphology and structure of the doped graphene have been characterized by the scanning electron microscopy, infrared spectroscopy, ultraviolet visible spectroscopy and X-ray photoelectron spectroscopy, while the electrocatalytic activity toward oxygen reduction reaction has been evaluated by the cyclic voltammetry. It has been shown that the morphology, structure, doping level and fashions of graphene could be finely tuned by the thermal treatment conditions, and which have substantial effects on the activity of oxygen reduction reaction. The boron-doped graphene and nitrogen-doped graphene calcined at 700 °C demonstrate excellent electrocatalytic oxygen reduction activities as the appropriate introduction of boron and nitrogen functional groups in graphene, which might be promising for low temperature fuel cell applications.
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