Wang K-W – TechConnect Briefs

Oxygen Reduction Reaction Enhancement of PdCo/C Electrocatalysts Driven by Oxidation Treatment

Wang K-W, National Central University, TW

One of the key issues for polymer electrolyte membrane fuel cells (PEMFCs) is to reduce or replace expensive Pt cathode catalysts. Although the development of non-Pt, such as Pd-Co catalysts for the oxygen reduction reaction [...]

Oxygen Reduction Reaction Enhancement of PdCo/C Electrocatalysts Driven by Oxidation Treatment

Wang K-W, National Central University, TW

One of the key issues for polymer electrolyte membrane fuel cells (PEMFCs) is to reduce or replace expensive Pt cathode catalysts. Although the development of non-Pt, such as Pd-Co catalysts for the oxygen reduction reaction [...]

Optical Properties of Ternary Alloyed Cd1-xZnxSe Semiconductor Nanocrystals

Chen I-H., Wang K-W, Chung S-R, National Formosa University, TW

In order to obtain high quantum yield (QY) nanocrystals and simplify the preparation procedure, one-pot synthetic method is conducted to prepare ternary alloyed nanocrystals. Ternary alloyed Cd1-xZnxSe (x=0, 0.2, 0.5, 0.8 and 1) semiconductor nanocrystals [...]

Desorption of Surfactant and Sintering of Surface Modified PdxNi1-x Nanoparticles

Wang K-W, Chung S-R, Hung W-H, Perng T.P., National Tsing Hua University, TW

A series of PdxNi1-x nanoparticles in a diameter of 10 nm were prepared by wet chemical reduction. The surface was modified with 1 wt% stearic acid (SA) or polyethylene glycol (PEG). Desorption of the surfactant [...]

Electrochemical Storage of Hydrogen in Carbon Nanotubes

Chung S-R, Wang K-W, Perng T.P., National Tsing Hua University, TW

The electrochemical hydrogenation property of carbon nanotubes (CNTs) was investigated. A slurry consisting of CNTs and a binder was pasted on a Ni foam to form an electrode. The discharge capacity was tested in an [...]

Compositional Inhomogeneity of Pd70Ag30 Alloy Nanoparticles

Wang K-W, Chung S-R, Jang L-Y, Lee J-F, Perng T.P., National Tsing Hua University, TW

The compositional inhomogeneity of Pd70Ag30 nanoparticles with the size of 6-7nm was studied by X-ray absorption near edge structure (XANES). The composition of the as-prepared nanoparticles by chemical reduction is inhomogeneous across the diameter due [...]