Modibedi, Remegia MMathe, Mahlanyane KMotsoeneng, RGKhotseng, LEOzoemena, KI2014-08-152014-08-152014-05Modibedi, R.M, Mathe, M.K, Motsoeneng, R.G, Khotseng, L.E and Ozoemena, K.I. 2014. Electrodeposition of Pd based binary catalysts on Carbon paper via surface limited redox-replacement reaction for oxygen reduction reaction. In: 25th ECS Meeting, Orlando, Florida, USA, 11-15 May 2014http://hdl.handle.net/10204/759625th ECS Meeting, Orlando, Florida, USA, 11-15 May 2014Direct alcohol fuel cells (DAFCs) continue to extensive attention as potential power sources for portable and stationary applications. The oxygen reduction reaction (ORR) involving the four electron transfer remains a challenge for DAFCs due to its slow kinetics. Research activities worldwide are focussed on improving the performance of ORR catalysts, reducing the amount of Pt required in DAFCs and in addition, developing catalysts tolerant to alcohol (alcohol crossover). Pd has attracted enormous attention as it is more abundant and also cheaper than Pt. In this presentation, Electrochemical Atomic Layer Deposition (ECALD) was used in the preparation of binary ORR catalysts. The binary nanoclusters were synthesised via surface-limited redox-replacement reaction (SLR3) with Cu as a sacrificial metal. Co-deposition of the two metals on carbon paper was also performed. ECALD is the appropriate fabrication methodology because the resultant catalysts showed good dispersion of the nanoclusters on the carbon paper. This will reduce the amount of Pt and increase the utilization of the catalyst. The prepared binary nanoclusters were evaluated for the ORR.enDirect alcohol fuel cellsDAFCsOxygen reduction reactionORRCarbon paperSurface-limited redox-replacement reactionFuel cellsConference PresentationModibedi, R. M., Mathe, M. K., Motsoeneng, R., Khotseng, L., & Ozoemena, K. (2014). Electrodeposition of Pd based binary catalysts on Carbon paper via surface limited redox-replacement reaction for oxygen reduction reaction. http://hdl.handle.net/10204/7596Modibedi, Remegia M, Mahlanyane K Mathe, RG Motsoeneng, LE Khotseng, and KI Ozoemena. "Electrodeposition of Pd based binary catalysts on Carbon paper via surface limited redox-replacement reaction for oxygen reduction reaction." (2014): http://hdl.handle.net/10204/7596Modibedi RM, Mathe MK, Motsoeneng R, Khotseng L, Ozoemena K, Electrodeposition of Pd based binary catalysts on Carbon paper via surface limited redox-replacement reaction for oxygen reduction reaction; 2014. http://hdl.handle.net/10204/7596 .TY - Conference Presentation AU - Modibedi, Remegia M AU - Mathe, Mahlanyane K AU - Motsoeneng, RG AU - Khotseng, LE AU - Ozoemena, KI AB - Direct alcohol fuel cells (DAFCs) continue to extensive attention as potential power sources for portable and stationary applications. The oxygen reduction reaction (ORR) involving the four electron transfer remains a challenge for DAFCs due to its slow kinetics. Research activities worldwide are focussed on improving the performance of ORR catalysts, reducing the amount of Pt required in DAFCs and in addition, developing catalysts tolerant to alcohol (alcohol crossover). Pd has attracted enormous attention as it is more abundant and also cheaper than Pt. In this presentation, Electrochemical Atomic Layer Deposition (ECALD) was used in the preparation of binary ORR catalysts. The binary nanoclusters were synthesised via surface-limited redox-replacement reaction (SLR3) with Cu as a sacrificial metal. Co-deposition of the two metals on carbon paper was also performed. ECALD is the appropriate fabrication methodology because the resultant catalysts showed good dispersion of the nanoclusters on the carbon paper. This will reduce the amount of Pt and increase the utilization of the catalyst. The prepared binary nanoclusters were evaluated for the ORR. DA - 2014-05 DB - ResearchSpace DP - CSIR KW - Direct alcohol fuel cells KW - DAFCs KW - Oxygen reduction reaction KW - ORR KW - Carbon paper KW - Surface-limited redox-replacement reaction KW - Fuel cells LK - https://researchspace.csir.co.za PY - 2014 T1 - Electrodeposition of Pd based binary catalysts on Carbon paper via surface limited redox-replacement reaction for oxygen reduction reaction TI - Electrodeposition of Pd based binary catalysts on Carbon paper via surface limited redox-replacement reaction for oxygen reduction reaction UR - http://hdl.handle.net/10204/7596 ER -