ã€Chinese instrument network instrument research and development】 Recently, Wu Zhongshuai, a researcher of the two-dimensional material and energy device research group of Dalian Institute of Chemical Physics, Chinese Academy of Sciences, used a bottom-up pyrolysis method to prepare continuous, uniform, ultra-thin sulfur-doped graphene. Films and apply them to high-capacity micro-super capacitors.
The relevant research results were published in "J. Am. Chem. Soc., DOI: 10.1021/jacs.7b00805". The work was focused on by Acta Physico-Chimica Sinica, a professor at Peking University, and Liu Zhongfan, an academician of the Chinese Academy of Sciences. He wrote on the bottom-up method for the preparation of sulfur-doped graphene films for miniaturization. The highlight of the article “Super Capacitors†(DOI: 10.3866/PKU.WHXB201703171) was followed by a Highlight report.
With the rapid development of highly integrated, light-weight portable and functional structural integrated electronic devices, it is urgently needed to provide new types of energy storage devices. Miniature supercapacitors have attracted much attention because of their advantages such as lightweight, small size, and high power density. Among them, the development of high-performance electrode materials is one of the important research directions for realizing high-performance miniature supercapacitors. Studies have found that one or more heteroatoms (nitrogen, boron, sulfur) doped graphene can significantly improve the performance of supercapacitors; however, with nanographene as the precursor, a uniform thickness can be precisely prepared from the bottom up. Large areas of sulfur-doped graphene films still face significant challenges.
The research team used the two-dimensional nano-confinement effect of nano-gold layer and gold catalysis to successfully prepare a continuous and uniform sulfur-doped graphene film from the bottom-up progressively pyrolysis method; this thin-film electrode was used. Micro-nano processing technology builds a miniature super capacitor. The capacitor has the advantages of high volumetric specific capacity (582F/cm3), good cycle stability, and high power density (1191W/cm3). The mechanism study shows that the existence of nano-gold thin layer is conducive to the formation of stable S-Au bonds, CS bonds, thus achieving the complete structure of the nanographene main body, uniform doping of sulfur elements and uniform film thickness. This work provides a new idea for the controllable preparation of large-area, continuous graphene films from the bottom-up process; it also provides a new method for sulfur-doped graphene and confirms that sulfur doping can significantly increase the electricity of graphene films. Chemical properties.
The above work was funded by the National Natural Science Foundation of China, the National Key Research and Development Program, the Natural Science Foundation of Liaoning Province, and the National Youth Project.
(Original title: Research Progress of DICP Supercapacitor)
The relevant research results were published in "J. Am. Chem. Soc., DOI: 10.1021/jacs.7b00805". The work was focused on by Acta Physico-Chimica Sinica, a professor at Peking University, and Liu Zhongfan, an academician of the Chinese Academy of Sciences. He wrote on the bottom-up method for the preparation of sulfur-doped graphene films for miniaturization. The highlight of the article “Super Capacitors†(DOI: 10.3866/PKU.WHXB201703171) was followed by a Highlight report.
With the rapid development of highly integrated, light-weight portable and functional structural integrated electronic devices, it is urgently needed to provide new types of energy storage devices. Miniature supercapacitors have attracted much attention because of their advantages such as lightweight, small size, and high power density. Among them, the development of high-performance electrode materials is one of the important research directions for realizing high-performance miniature supercapacitors. Studies have found that one or more heteroatoms (nitrogen, boron, sulfur) doped graphene can significantly improve the performance of supercapacitors; however, with nanographene as the precursor, a uniform thickness can be precisely prepared from the bottom up. Large areas of sulfur-doped graphene films still face significant challenges.
The research team used the two-dimensional nano-confinement effect of nano-gold layer and gold catalysis to successfully prepare a continuous and uniform sulfur-doped graphene film from the bottom-up progressively pyrolysis method; this thin-film electrode was used. Micro-nano processing technology builds a miniature super capacitor. The capacitor has the advantages of high volumetric specific capacity (582F/cm3), good cycle stability, and high power density (1191W/cm3). The mechanism study shows that the existence of nano-gold thin layer is conducive to the formation of stable S-Au bonds, CS bonds, thus achieving the complete structure of the nanographene main body, uniform doping of sulfur elements and uniform film thickness. This work provides a new idea for the controllable preparation of large-area, continuous graphene films from the bottom-up process; it also provides a new method for sulfur-doped graphene and confirms that sulfur doping can significantly increase the electricity of graphene films. Chemical properties.
The above work was funded by the National Natural Science Foundation of China, the National Key Research and Development Program, the Natural Science Foundation of Liaoning Province, and the National Youth Project.
(Original title: Research Progress of DICP Supercapacitor)