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Nanoscale最新综述：氧化石墨烯的有效还原及其在电化学储能领域的应用
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通过氧化石墨烯的化学还原得到石墨烯或者还原氧化石墨烯是目前为止最有可能实现廉价量产的石墨烯生产途径。最新一期的Nanoscale杂志刊发了题为Recent advances on the efficient reduction of graphene oxide and its application as energy storage electrode materials ，综述了当前通过氧化石墨烯的不同还原途径制备石墨烯的工作以及还原后的氧化石墨烯在电极材料能源存储领域的应用。文章37页，引文164篇。 Efficient reduction of graphene oxide (GO) by chemical, thermal, electrochemical, and photo irradiation techniques has been reviewed. Particular emphasis has been directed towards the proposed reduction mechanisms of GO by different reducing agents and techniques. The advantages of using different kinds of reducing agents on the basis of their availability, cost-effectiveness, toxicity, and easy product isolation processes have also been studied extensively. We provide a detailed description of the improvement in physiochemical properties of reduced GO (rGO) compared to pure GO. For example, the electrical conductivity and electrochemical performance of electrochemically obtained rGO is much better than those of chemically or thermally rGO materials. We provide examples of how rGO has been used as supercapacitor electrode materials. Specific capacitance of GO increases after reduction and the value has been reported to be 100-300 F g-1. We conclude by proposing new environmentally-friendly types of reducing agents that can efficiently remove oxygen functionalities from the surface of GO. .[ 来自科研家族 材料家族 ] |
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2012-11-09 20:21:17, 16.57 M
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