Surfactant-assisted synthesis of platinum nanoparticle catalysts for proton exchange membrane fuel cells

Pt/C electrocatalysts derived from recycled Pt/Re mixed solutions: synthesis, characterization, and electrochemical behaviour in fuel cells

“…Despite a slight increase in the intrinsic activity of Pt nanoparticles, this phenomenon may be attributed to a notable reduction in the electrochemically active surface area (ECSA) caused by Ostwald ripening, which subsequently leads to a decrease in the number of active sites. 15,53 Size distribution shown in the TEM images demonstrated a rise in the average size of Pt particles from 2.03 nm and 2.31 nm to 2.99 nm and 3.47 nm for M-50 and TANAKA 20 wt% commercial Pt/C, respectively, after ADT measurement (Fig. S6†).…”

Low-Loading Sub-3 nm PtCo Nanoparticles Supported on Co–N–C with Dual Effect for Oxygen Reduction Reaction in Proton Exchange Membrane Fuel Cells

“…Proton exchange membrane fuel cells (PEMFCs) are validated as high-efficiency energy conversion devices that can alleviate energy crises and environmental issues. Nevertheless, the large-scale commercialization of PEMFCs is severely impeded by the tardy cathodic oxygen reduction reaction (ORR) process, which requires highly efficient and stable catalysts. − Pt is the only precious metal with outstanding activity and durability in harsh acidic systems. Unfortunately, Pt suffers from the high cost and the limited resource .…”

In situ investigation of the formation mechanism of α-Bi2Rh nanoparticles in polyol reductions

“…14 Such an experimental setup has proven favorable for the synthesis of a plethora of intermetallic phases, some of which were not accessible by conventional methods. 6,[15][16][17][18] Although the (microwave-assisted) polyol process is well established and there are also several empirical studies on the dependence on diverse reaction parameters, such as starting materials, 19 concentrations, 20 temperature 21 and the influence of auxiliaries, 22 the mechanism of particle formation has been thoroughly studied mainly for mono-metallic reactions. 13,[23][24][25][26] Schaak et al performed first systematic studies on the more complex formation of binary and ternary compounds, such as AuCuSn 2 .…”