Electrode characteristics of two-phase glass-forming Ni–Nb–Y alloys

Synthesis and Characterization of PdSn Oxygen Reduction Electrocatalyst

“…The exchange current density, 0 i , was evaluated as a function of temperature, taking into consideration the reversible oxygen electrode potential, r E , at each temperature. The dependence of r E on temperature was evaluated using equations [2] and [3] .…”

“…These novel electrocatalysts are specially aimed to promote the dissociation of the O-O bond during the ORR mechanism, and to maintain better stability (1,2). Bimetallic and alloy catalysts have been particularly active area of research because it has been established that for the cathode reaction, multi-metallic surfaces have superior activity than that of pure metal (3,4). The enhanced reactivity of the alloy surfaces is attributed to bi-functional effects, in which the unique catalytic properties of each of the elements in the alloy combine in a synergetic manner to yield a surface which results more active than each of the elements alone.…”

Nano-porous surface states of Ti–Y–Al–Co phase separated metallic glass

“…Apart from the primary interest, i.e., the two-glassy phase formation, these alloys are characterized for several interesting properties such as magnetic [8], mechanical [7,10], chemical [11,12] and electrochemical reactivity [13]. Furthermore, by selective chemical etching or electrochemical dealloying of the phase separated glassy alloys fabrication of novel metallic glassy architecture such as micro-fibers composed of Zr-based glass [11], nano-porous Ti-based glass [12], Ti-based nano powders [14], Ni-based nanoparticles [13] and Zr-based nano-wires and nanoparticles [9] were displayed.…”

“…Furthermore, by selective chemical etching or electrochemical dealloying of the phase separated glassy alloys fabrication of novel metallic glassy architecture such as micro-fibers composed of Zr-based glass [11], nano-porous Ti-based glass [12], Ti-based nano powders [14], Ni-based nanoparticles [13] and Zr-based nano-wires and nanoparticles [9] were displayed. Due to their unique morphology, several interesting applications may be opened in the future, for instance the nanoporous Ti-based metallic glass may find application as fluidic filters [12].…”

“…Those materials may also be of interest for applications related to catalysis due to their large surface area. Thus, efforts have recently been intended to use the selectively etched Ni-Nb-Y glassy alloy as electrode materials for cathodic hydrogen evolution reactions [13].…”