Conductive resilient graphene aerogel via magnesio- thermic reduction of graphene oxide assemblies  

作　　者：Huang Tang Peibo Gao Zhihao Bao Bin Zhou Jun Shen Yongfeng Mei Guangming Wu 

机构地区：[1]Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, School of Physics Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China [2]Department of Materials Science and Engineering, Fudan University, 220 Handan Road, Shanghai 200433, China

出　　处：《Nano Research》2015年第5期1710-1717,共8页纳米研究（英文版）

基　　金：This work was supported Foundation for Returned Education of China, Key by the Scientific Research Scholars, the Ministry of Basic Research Projects of Science and Technology Commission of Shanghai （No.11JC1412900）, and the National Science Foundation of China program （Nos. 21271140, 51472182）.

摘　　要：Graphene aerogels are desirable for energy storage and conversion, as catalysis supports, and as adsorbents for environmental remediation. To produce graphene aerogels with low density, while maintaining high electrical conductivity and strong mechanic performance, we synthesized graphene aerogels by the magnesiothermic reduction of a freeze-dried graphene oxide （GO） self-assembly and subsequent etching of the formed MgO in acid solution. The reduced graphene oxide （rGO） aerogel samples exhibited densities as low as 1.1 mg·cm^-3. The rGO aerogel was very resilient, exhibiting full recoveryeven after being compressed by strains of up to 80%; its elastic modulus （E） scaled with density （p） as E-p^2. The rGO aerogels also exhibited high conductivities （e.g., 27.7 S·m^-1 at 3.6 mg·cm^-3） and outperformed many rGO aerogels fabricated by other reduction processes. Such outstanding properties were ascribed to the microstructures inherited from the freeze-dried GO self-assembly and the magnesiothermic reduction process.Graphene aerogels 为精力存储和变换是合乎需要的，作为催化作用支持，并且作为为环境补习的吸附物。当维持高电的电导率和强壮的技工性能时，与低密度生产 graphene aerogels，我们综合了由 freeze-dried graphene 氧化物的 magnesiothermic 减小的 graphene aerogels (去) 自己组装、随后在酸形成的 MgO 蚀刻答案。减少的 graphene 氧化物( rGO ) aerogel 样品展出了象 1.1 mg 一样低的密度????????????????????????????????????????吗???敤牧摡'L汩瑩???????????????????？？

关 键 词：graphene aerogel magnesiothermic reduction CONDUCTIVITY mechanical properties 

分 类 号：TQ127.11[化学工程—无机化工] TF823.031[冶金工程—有色金属冶金]