Abstract:graphene aerogels (GA) have good performance in the application fields of electrochemistry, adsorption and catalysis due to its special three-dimensional cross-linking network structure. However, it is still a challenge to fabricate GA with both excellent mechanical properties and functional properties by a simple method. Here, triethylenediamine (DETA) was used as a structural enhancer and a reducing agent to prepare ultra-elastic GA by means of hydrothermal reduction. Microstructures of GA were observed by scanning electron microscopy (SEM). The influence of initial concentration of graphene oxide (GO) and DETA in the pre-gel solutions on density, conductivity and mechanical properties of GA was studied. Results showed that the density and conductivity of GA vary much with different concentrations of GO and DETA. The compressive strength increases with increasing concentrations of GO and DETA. The maximum compressive strength is up to 6.8 MPa when the concentration of GO reached 8 mg mL-1 and concentration ratio of GO to DETA kept at 1:7.5. Besides, GA could completely recover its shape after compression. As confirmed from the brightness of Light-Emitting Diode (LED) light, the larger compression strain was, the better conductivity would achieve. In addition, adsorption behavior of GA towards seven kinds of common organic solvents was researched. It is presented that GA could absorb these liquids at 41 to 83 times its own weight requiring no further pretreatment, showing highly efficient absorption of these organic solvent. This GA appear to be potentially used as a versatile electrode material and an efficient adsorbent with applications in the fields of electrochemistry and environmental protection respectively. This simple process to fabricate GA with good mechanical properties and great absorption performance is facile, low-cost and scalable.