Kinetic Study of Electro-oxidation of Formic Acid on Spontaneously-Deposited Pt/Pd Nanoparticles: CO Tolerant Fuel Cell Chemistry
作者： Mingchuan Zhao , Cynthia Rice , Richard I. Masel , Piotr Waszczuk , Andrzej Wieckowski
DOI: 10.1149/1.1630806
关键词:
摘要: Pt/Pd catalysts have recently been found to exceptional properties in formic acid fuel cells. In this paper, the kinetics of electro-oxidation on spontaneously-deposited nanoparticles were measured provide a basis for cell design. The results confirmed previous findings that palladium covered platinum showed activity electro-oxidation. factor thirty more active than Pt under conditions examined. also continued function as CO built up catalyst surface and reasonable activity. Thus, tolerant. addition, Tafel slope was time dependent. Generally, decreased COad deposited surface, suggesting change rate determining step with coverage. concentration effect studied detail give guidance practical Similar studies performed comparison. (C) 2003 Electrochemical Society.
uq.edu.au
harvard.edu参考文章(17)
Andrew Capon, Roger Parsons, The oxidation of formic acid at noble metal electrodes Journal of Electroanalytical Chemistry. ,vol. 44, pp. 239- 254 ,(1973) , 10.1016/S0022-0728(73)80250-5
Andrew Capon, Roger Parson, The oxidation of formic acid at noble metal electrodes: I. Review of previous work Journal of Electroanalytical Chemistry. ,vol. 44, pp. 1- 7 ,(1973) , 10.1016/S0022-0728(73)80508-X
G.A. Attard, R. Price, Electrochemical investigation of a structure sensitive growth mode: palladium deposition on Pt(100)-hex-R0.7° and Pt(100)-(1 × 1) Surface Science. ,vol. 335, pp. 63- 74 ,(1995) , 10.1016/0039-6028(95)00415-7
Masayoshi Naito, Hiroshi Okamoto, Naoki Tanaka, Nonlinear dynamical analysis of spike generation in electrochemical oxidation of formic acid on Pt Chemical Physics Letters. ,vol. 319, pp. 71- 75 ,(2000) , 10.1016/S0009-2614(00)00117-2
P. Strasser, M. Eiswirth, G. Ertl, OSCILLATORY INSTABILITIES DURING FORMIC ACID OXIDATION ON PT(100), PT(110)AND PT(111) UNDER POTENTIOSTATIC CONTROL. II. MODEL CALCULATIONS Journal of Chemical Physics. ,vol. 107, pp. 991- 1003 ,(1997) , 10.1063/1.474451
C. Rice, S. Ha, R.I. Masel, P. Waszczuk, A. Wieckowski, Tom Barnard, Direct formic acid fuel cells Journal of Power Sources. ,vol. 111, pp. 83- 89 ,(2002) , 10.1016/S0378-7753(02)00271-9
C Rice, S Ha, RI Masel, A Wieckowski, Catalysts for direct formic acid fuel cells Journal of Power Sources. ,vol. 115, pp. 229- 235 ,(2003) , 10.1016/S0378-7753(03)00026-0
M. Baldauf, D. M. Kolb, Formic Acid Oxidation on Ultrathin Pd Films on Au(hkl) and Pt(hkl) Electrodes The Journal of Physical Chemistry. ,vol. 100, pp. 11375- 11381 ,(1996) , 10.1021/JP952859M
P. Strasser, M. Lübke, F. Raspel, M. Eiswirth, G. Ertl, Oscillatory instabilities during formic acid oxidation on Pt(100), Pt(110) and Pt(111) under potentiostatic control. I. Experimental Journal of Chemical Physics. ,vol. 107, pp. 979- 990 ,(1997) , 10.1063/1.474450
Guo-Qiang Lu, Alechia Crown, Andrzej Wieckowski, Formic Acid Decomposition on Polycrystalline Platinum and Palladized Platinum Electrodes Journal of Physical Chemistry B. ,vol. 103, pp. 9700- 9711 ,(1999) , 10.1021/JP992297X