Modeling Condition Optimization and Desalting Performance Evaluation of Carbon Nanotubes Electrode
CHEN Xin-Jin1,2, WANG Yue1,2, XU Shi-Chang1,2, ZHANG Yu-Jie1,2, WU Ya-Fei1,2, WANG Ji-Xiao1,2
1.School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; 2.Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University
Abstract With carbon nanotubes as active materials, polyvinylidene fluoride (PVDF) as adhesive and graphite as conductive material, electrodes for CDI process were fabricated through compression moulding method. Effect of the fabrication conditionsadhesive proportion and moulding pressure on the electrode electrochemical performance and desalination were studied and analyzed. The results show that, with the increase of the adhesive proportion, the specific surface area and conductivity of the electrodes are tending to gradually reduce, while the specific capacitance and the specific adsorption of the electrode increase initially and decrease afterwards. Along with the increase of molding pressure, the electrode specific surface area decreases gradually, however， its conductivity increases accordingly. The electrode specific capacitance and the specific adsorption increase at the first and then decrease as the pressure rising. When the PVDF weight content is 10%, the graphite content is 5% and the molding pressure is 10 MPa, the electrode has the best performance with the electrode specific capacitance of 80.4 F/g and the specific adsorption of 14.1 mg/g.
CHEN Xin-Jin, WANG Yue, XU Shi-Chang, ZHANG Yu-Jie, WU Ya-Fei, WANG Ji-Xiao.Modeling Condition Optimization and Desalting Performance Evaluation of Carbon Nanotubes Electrode[J] Chemcial Industry and Engineering, 2013,V30(1): 42-47
2013, Vol. 30 
