Layer by layer assembly of hybrid nanoparticle coatings for proton exchange membrane fuel cell bipolar plates

Enhanced Electrocatalytic Oxygen Reduction through Electrostatic Assembly of Pt Nanoparticles onto Porous Carbon Supports from SnCl2-Stabilized Suspensions

“…Layers were formed by cycling the substrate into baths of polymer then Pt nanoparticle suspensions for 2 and 5 min, respectively, with intervening DI water rinses. The adsorption times were selected to achieve an equilibrated surface concentration of each species based on previous laboratory investigations. − …”

“…He demonstrated that only a monolayer of one species remained on the other after rinsing. Since the work of Iler, a vast number of potential applications utilizing electrostatic LbL assembly have been investigated. − Several authors have investigated the electrostatic assembly of gold nanoparticles with various supports for oxygen reduction and other electrocatalytic applications. Li et al used electrostatic attraction between negatively charged Au nanoparticles and positively charged Azure 1 to fabricate a composite Au/multiwalled carbon nanotube (MWCNT) membrane for use as a stable immunosensor .…”

Versatile electrostatic assembly of nanoparticles and polyelectrolytes: Coating, clustering and layer-by-layer processes

“…In the very crucial domain of alternative sources of energy, Wang et al [60] have demonstrated the pertinent use of ELbL assembly to create hybrid bipolar plate coatings composed of both electrically conductive graphite platelets and silica NPs to maximize proton exchange membrane fuel cell efficiency via an enhanced surface wettability and a reduced contact resistance. In the same area, Taylor et al [61] have generated ultrathin layers made out of single-walled CNTs functionalized Pt catalyst layered with the help of some specific PEs (Nafion, PEI, poly(aniline)) with excellent homogeneity characteristics yielding a power density 4-fold higher than membrane electrode assemblies produced using conventional methods.…”

Layered double hydroxide-based fire resistant coatings for flexible polyurethane foam

“…Over the past 20 years, LbL assembly has been used to create multifunctional films 2-4 for a variety of applications, such as sensing, 5,6 antimicrobial surfaces, 7 battery electrodes, 8,9 water repellents, 10,11 oxygen barriers, 12,13 fire resistance [14][15][16][17] . and drug delivery and biomedical applications [18][19][20].…”