Electrochemical properties of graphene nanosheet/carbon black composites as electrodes for supercapacitors
Electrochemical properties of graphene nanosheet/carbon black composites as electrodes for supercapacitors
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DOI：
10.1016/j.carbon.2010.01.014
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发表时间：
2010-05
期刊：
影响因子：
10.9
通讯作者：
Jun Yan;Tong Wei;Bo Shao;Fuqiu Ma;Zhuangjun Fan;Milin Zhang;Chao Zheng;Y. Shang;W. Qian
中科院分区：
文献类型：
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作者：
Jun Yan;Tong Wei;Bo Shao;Fuqiu Ma;Zhuangjun Fan;Milin Zhang;Chao Zheng;Y. Shang;W. Qian
采用超声波法和原位还原法制备了石墨烯纳米片/炭黑复合材料。显微结构测量结果表明，超声法沉积的炭黑颗粒主要分布在纳米片的边缘表面，原位还原法沉积的炭黑颗粒主要分布在纳米片的基底表面。杂化材料的电化学性能优于纯石墨烯材料，说明炭黑颗粒作为间隔层保证了石墨烯层的高电化学利用率，以及三维石墨烯纳米片/炭黑杂化材料提供的开放纳米通道。因此，所得到的复合材料是一种很有前途的超级电容器碳材料。
Graphene nanosheet/carbon black composites were prepared by the ultrasonication and in situ reduction methods. Microstructure measurements show that most carbon black particles deposit on the edge surfaces of nanosheets by the ultrasonication method, and on the basal surfaces of nanosheets by in situ reduction method. The electrochemical performances of hybrid materials are superior to pure graphene material, demonstrating that carbon black particles as spacers ensured the high electrochemical utilization of graphene layers as well as the open nano-channels provided by three-dimensional graphene nanosheet/carbon black hybrid material. Therefore, the resulting composite is a promising carbon material for supercapacitors.