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dc.contributor.author肖鹏zh_CN
dc.contributor.author王大辉zh_CN
dc.contributor.author郎俊伟zh_CN
dc.contributor.authorXIAO Pengzh_CN
dc.contributor.authorWANG Da-Huizh_CN
dc.contributor.authorLANG Jun-Weizh_CN
dc.date.accessioned2014-12-19T07:06:20Z
dc.date.available2014-12-19T07:06:20Z
dc.date.issued2014-12-28zh_CN
dc.identifier.citation电化学,2014,20(6):553-562.zh_CN
dc.identifier.issn1006-3471zh_CN
dc.identifier.urihttp://dx.doi.org/10.13208/j.electrochem.140213zh_CN
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/80555
dc.description.abstract通过改进的Hummer法制得氧化石墨烯,并在不同温度的氩气气氛中还原得到一系列热还原氧化石墨烯(T-RGO). 电化学测试表明,T-RGO作为超级电容器电极材料时,良好的导电性是必需的,但石墨烯表面含氧官能团对其电容性能的影响要远大于导电性和比表面积的影响,900 °C还原的T-RGO比表面积为314 m2·g-1电导率为2421 S·m-1,但其容量只有56 F·g-1,然而300 °C还原的T-RGO比表面积为18.8 m2·g-1电导率为574 S·m-1,其容量却达到281 F·g-1. 材料表征分析表明,300 °C 还原的石墨烯之所以有更高的电容,是因为除双电层电容外,更多的是由其表面含氧官能团提供的赝电容,这使作者以后在设计制备超级电容器等储能设备用石墨烯基电极材料时更加有针对性.zh_CN
dc.description.abstractIn this paper, thermal-reduced graphene oxide (T-RGO) materials are synthesized by modified Hummer’s method, followed by thermal reduction under argon atmosphere at different temperatures. Electrochemical investigations show that, for T-RGO electrodes, good electrical conductivity is necessary and the surface functional groups play more significant role than the specific surface area in determining the electrochemical capacitance. The T-RGO obtained at 900 °C (T-RGO900) with a relatively high Brunauer-Emmett-Teller (BET) surface area (314 m2·g-1) and a high electrical conductivity (2421 S·m-1) shows a low specific capacitance of 56 F·g-1. In comparison, the T-RGO obtained at 300 °C (T-RGO300) with a relatively low BET surface area (18.8 m2·g-1) and an electrical conductivity (574 S·m-1) provides the largest specific capacitance of 281 F·g-1. The large specific capacitance of T-RGO300 results from the simultaneous contributions of the electrochemical double-layer capacitance and the pseudo-capacitance obtained from the oxygenated groups on the T-RGO surfaces. Therefore, it probably gives a new insight for designing and synthesizing graphene-based electrode materials for supercapacitors and other energy-storage devices.zh_CN
dc.description.sponsorshipThis work was supported by The Top Hundred Talents Program of the Chinese Academy of Sciences and National Natural Science Foundations of China (No. 51005225, No. 21203223)zh_CN
dc.description.sponsorshipThis work was supported by The Top Hundred Talents Program of the Chinese Academy of Sciences and National Natural Science Foundations of China (No. 51005225, No. 21203223)zh_CN
dc.language.isozhzh_CN
dc.publisher厦门大学《电化学》编辑部zh_CN
dc.relation.ispartofseries研究论文zh_CN
dc.relation.ispartofseriesArticleszh_CN
dc.source.urihttp://electrochem.xmu.edu.cn/CN/abstract/abstract10124.shtmlzh_CN
dc.subject石墨烯zh_CN
dc.subject赝电容zh_CN
dc.subject超级电容器zh_CN
dc.subject表面官能团zh_CN
dc.subject热还原zh_CN
dc.subjectgraphenezh_CN
dc.subjectpseudo-capacitancezh_CN
dc.subjectsupercapacitorzh_CN
dc.subjectsurface functional groupszh_CN
dc.subjectthermal reductionzh_CN
dc.title影响热还原氧化石墨烯超级电容器性能的因素比较zh_CN
dc.title.alternativeComparison in Factors Affecting Electrochemical Properties of Thermal-Reduced Graphene Oxide for Supercapacitorszh_CN
dc.typeArticlezh_CN
dc.description.note作者联系地址:1. 兰州理工大学材料科学与工程学院,甘肃 兰州 730050;2. 中国科学院兰州化学物理研究所,清洁能源化学与材料实验室,甘肃 兰州 730000zh_CN
dc.description.noteAuthor's Address: 1. School of Material Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China; 2. Laboratory of Clean Energy Chemistry and Materials, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, Chinazh_CN
dc.description.note通讯作者E-mail:wangdh@lut.cn, jwlang@licp.cas.cnzh_CN


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