|
|
- 2015
全钒液流电池磺化石墨烯/Nafion复合膜的研究
|
Abstract:
摘要 本文通过磺化石墨烯对Nafion膜进行改性，研究了磺化石墨烯/Nafion复合膜（GRS-Nafion复合膜）的吸水率、电阻率和钒离子迁移数. 结果表明，经磺化石墨烯改性之后，GRS-Nafion复合膜的面电阻和钒离子渗透率显著降低. 全钒液流电池的测试结果表明，GRS-Nafion复合膜有着更加优异的电化学性能，展示出GRS-Nafion复合膜在液流电池中的应用潜力.
Nafion membrane has been widely used in fuel cells due to its good proton conductivity, chemical and mechanical stabilities. However, the well-developed water channels in Nafion membrane have restricted its application in all vanadium redox flow batteries owing to the high permeation of vanadium ions and the cost. In this work, the water adsorption rate, resistivity and transference number of vanadium ions of sulfonated-graphene/Nafion composite membrane were investigated and compared with those of Nafion membrane in an effort to overcome the abovementioned drawbacks. It was found that the area resistivity and permeation rate of sulfonated-graphene/Nafion composite membrane were significantly reduced after the modification of Nation membrane by sulfonated grapheme. The results from the all vanadium redox flow battery indicated that the sulfonated-graphene/Nafion composite membrane exhibited better electrochemical performance, demonstrating potential application in all vanadium redox flow batteries
| [1] | Sun C X, Chen J, Zhang H M, et al. Investigations on transfer of water and vanadium ions across Nafion membrane in an operating vanadium redox flow battery[J]. Journal of Power Sources, 2010, 195(3): 890-897. |
| [2] | Vijayakumar M, Bhuvaneswari M S, Nachimuthu P, et al. Spectroscopic investigations of the fouling process on Nafion membranes in vanadium redox flow batteries[J]. Journal of Membrane Science, 2011, 366(1/2): 325-334. |
| [3] | Wang N F, Peng S, Lu D, et al. Nafion/TiO2 hybrid membrane fabricated via hydrothermal method for vanadium redox battery[J]. Journal of Solid State Electrochemistry, 2012, 16(4): 1577-1584. |
| [4] | Alberti G, Casciola M, Capitani D, et al. Novel Nafion-zirconium phosphate nanocomposite membranes with enhanced stability of proton conductivity at medium temperature and high relative humidity[J]. Electrochimica Acta, 2007, 52(28): 8125-8132. |
| [5] | Chen L, Tang H L, Li J R, et al. Highly ordered Nafion-silica-HPW proton exchange membrane for elevated temperature fuel cells[J]. International Journal of Energy Research, 2013, 37(8): 879-887. |
| [6] | Skyllas-Kazacos M, Rychcik M, Robins R G, et al. New all-vanadium redox flow cell[J]. Journal of The Electrochemical Society, 1986, 133(5): 1057-1058. |
| [7] | Sukkar T, Skyllas-Kazacos M. Modification of membranes using polyelectrolytes to improve water transfer properties in the vanadium redox battery[J]. Journal of Membrane Science, 2003, 222(1/2): 249-264. |
| [8] | Yang Z G, Zhang J L, Kintner-Meyer MCW, et al. Electrochemical energy storage for green grid[J]. Chemical Reviews, 2011, 111(5): 3577-3613. |
| [9] | Woong J C, Venkataramani S, Kim S C. Modification of Nafion membrane using poly(4-vinyl pyridine) for direct methanol fuel cell[J]. Polymer International, 2006, 55(5): 491-499. |
| [10] | Zaffou R, Li W N, Perry M L. Vanadium redox flow batteries for electrical energy storage: Challenges and opportunities[M]//Polymers for energy storage and delivery: Polyelectrolytes for batteries and fuel cells. ACS Symposium Series, Vol. 1096, American Chemical Society, 2012: 107-127. |
| [11] | Xi J Y, Wu Z H, Qiu X P, et al. Nafion/SiO2 hybrid membrane for vanadium redox flow battery[J]. Journal of Power Sources, 2007, 166(2): 531-536. |
