Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
권호 표지

The Electrochemical Characteristics of MEA with Pt/Cross-Linked SPEEK-HPA Composite Membranes/Pt-Ru for Water Electrolysis

수전해용 Pt/공유가교 SPEEK-HPA 복합막/Pt-Ru MEA의 전기화학적 특성

  • Published : 2009.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

The e1ectrocatalytic properties of heteropolyacids(HPAs) entrapped in covalently cross-linked sulfonated polyetheretherketone(CL-SPEEK/HPA) membranes have been studied for water electrolysis. The HPAs, including tungstophosphoric acid(TPA), molybdophosphoric acid(MoPA), and tungstosilicic acid(TSiA) were used as additives in the composite membranes. The MEA was prepared by a non-equilibrium impregnation-reduction(I-R) method, using reducing agent, sodium borohydride(NaBH4) and tetraamineplatinum(II) chloride(pt(NH$_3$)$_4$Cl$_2$). The electrocatalytic properties of composite membranes such as the cell voltage were in the order of magnitude CL-SPEEKlMoPA40 (wt%) > /TPA30 > /TSiA40. In the optimum cell applications for water electrolysis, the cell voltage of PtlPEM/Pt-Ru MEA with CL-SPEEKlTPA30 membrane was 1.75 V at 80$^{\circ}$C and I A/cm$^2$ and this voltage carried lower than that of 1.81 V of Nafion 117. Consequently, in regards of electrochemical and mechanical characteristics and oxidation durability, the newly developed CL-SPEEKITPA30 composite membrane exhibited a better performance than the others, but CLSPEEKlMoPA40 showed the best electrocatalytic activity (1.71 Vat 80$^{\circ}$C and 1 A/cm$^2$) among the composite membranes.

Keywords

References

  1. P. Millet, F. Andolfatto and R Durand, 'Design and performance of a solid polymer electrolyte water electrolyzer' Int. J. Hydrogen Energy, Vol. 21, No.2, 1996, pp. 87-93 https://doi.org/10.1016/0360-3199(95)00005-4
  2. J. O. Bockris, 'Comprehensive treatise of electrochemistry', Plenum press, New York, Vol. 2, 1981
  3. I. Y. Jang, O. W. Kweon, K. E. Kim, G. J. Hwang, S. B. Moon, and A. S. Kang, 'Covalently cross-linked sulfonated poly(ether ether ketone)/tungstophosphoric acid composite memebranes for water electrolysis application', J. Power Sources, Vol. 181, No.1, 2008, pp. 127-134 https://doi.org/10.1016/j.jpowsour.2008.03.022
  4. H. Takenaka, E. Torikai, Y. Kawami, and N. Wakabayashi, 'Solid polymer Electrolyte Water Electrolysis', Int. J. Hydrogen Energy, Vol. 7, No.5, 1982, pp. 397-403 https://doi.org/10.1016/0360-3199(82)90050-7
  5. R Liu, W. H. Her, and P. S. Fedkiw, 'In situ Electrode Formation on a Nafion Membrane by Chemical Platinization', J. Electrochem Soc., Vol. 139, No.1, 1992, pp. 15-23 https://doi.org/10.1149/1.2069162
  6. 권오환, 김경언, 장인영, 황용구, 정장훈, 문상봉, 강안수, '수전해용Pt/PEM/Pt-Ru MEA의 전기화학적특성', 한국수소 및 신에너지학회 논문집, Vol 19, No. 1, 2008, pp. 18-25
  7. P. Millet, M Pineri and R Durand, 'New solid polymer electrolyte composites for water electrolysis', J. Appl. Eleetrochem., Vol. 19, No.2, 1989, pp. 162-166 https://doi.org/10.1007/BF01062295
  8. R. J. Stanis, Mei-Chen Kuo, A. J. Rickett, J. A. Turner and A. M. Herring, 'Investigation into the activity of heteropolyacids towards the oxygen reduction reaction on PEMFC cathodes', Electrochimica Acta, Vol. 53, No. 28, 2008, pp. 8277-8286 https://doi.org/10.1016/j.electacta.2008.06.052
  9. P. Fricoteaux and O. Savadogo, 'Electrocatalytic parameters of the electrodeposition of copper with silicotungstic acid (STA)', Electrochimica Acta, Vol. 44, No. 17, 1999, pp. 2927-2940 https://doi.org/10.1016/S0013-4686(99)00008-0
  10. O. Savadogo, 'On the concept of synergetic systems of composite or modified materials and their electrocatalytic properties: (I) General approach', Int. J. Hydrogen Energy, Vol. 27, No.2, 2002, pp. 157-169 https://doi.org/10.1016/S0360-3199(01)00107-0
  11. M Soggaard, M Odgaard, and E. M Skoi, 'An Improved Method for the Determination of the Electrochemical Active Area of Porous Composite Platinum Electrodes', Solid State Ionics, Vol. 145, No. 31, 2001. pp. 31-35 https://doi.org/10.1016/S0167-2738(01)00908-0
  12. 장두영, 장인영, 권오환, 김경언, 황갑진, 강안수, '함침-환원법으로 제조된 수전해용 Pt-SPE 전극촉매의 특성', 한국수소 및 신에너지학회 논문집, Vol 17, No.4, 2006, pp. 440-447
  13. F. Liu and C. Y. Wang, 'Variations in Interfacial Properties During Cell Conditioning and Influence of Heat-Treatment of Ionomer on the Characteristics of Direct Methanol Fuel Cells', Electrochim Acta, Vol. 50, 2005, pp. 1413-1422 https://doi.org/10.1016/j.electacta.2004.08.040
  14. 황용구, '수전해용 SPEEK 전해질 막의 제조시 HPA 첨가제의 영향', 명지대학교 대학원, 박사학위논문, 용인, 2008, pp. 122-126
  15. Mei-Chen Kuo, B. R. Limogesa, R. J. Stanis, J. A. Turnerb and A. M Herring, 'The use of the heteropoly acids, $H_5PMo_{10}V_2O_{40}$, $H_7[P_2W_{17}O_{61}(FeIII-OH_2)]$or $H_{12}[(P_2W_{15}O_{56})_2Fe_4III(H_2O_2)_2]$, in the anode catalyst layer of a proton exchange membrane fuel cell', J. Power Sources, Vol. 171, No.2, 2007, pp. 517-523 https://doi.org/10.1016/j.jpowsour.2007.06.063