The hydrogen evolution reaction (HER) on Au with high chemical stability is activated by alloying it Ni. We evaluated the HER activity of AuNi surface alloy prepared at different temperatures single-crystal electrodes in 0.05 M H2SO4. potential cycle, including region Ni oxidative dissolution, further enhanced dealloying Ni, and depended structure substrate following order: AuNi/Au(100)<AuNi/Au...

A silver-deposited nickel (Ag/Ni) wire electrode was prepared via a galvanic replacement reaction between Ag+ and Ni in aqueous solution. It then found that the Ag/Ni could be modified with Pt simply by treating it an solution of K2PtCl4. Although deposition Ag on limited amount, forming deposits less than 100 nm size, considerable increase electrocatalytic currents for oxidation alcohols obser...

The deconvolution of physicochemical processes in impedance spectra SOCs with nickel/ceria fuel electrodes is challenging as gas diffusion strongly overlaps the electrochemical at and air electrode. To overcome this issue, symmetrical cells were applied process electrode was quantified by altering inert component (nitrogen/helium) a ternary mixture. An effective transport parameter considering ...

Hydrogen, produced by water splitting, has been proposed as one of the main green energy vectors future if from renewable sources. However, to substitute fossil fuels, large amounts pure are necessary, scarce in many world regions. In this work, we fabricate efficient and earth-abundant electrodes, study challenges using real seawater, propose an electrode regeneration method face undesired sal...

Nowadays, there is constant demand for the development of energy storage materials using advanced methodologies. In this scenario, a large-scale environmentally friendly synthesis was chosen to prepare Ni-Co-layered double hydroxide (LDH) composites asymmetric supercapacitors. The developed had flower-like porous architecture with very low dimensional layers and large surface area. Ni-Co/LDH co...

An array of electrodes on which cells could be grown directly was fabricated using silicon anisotropic etching and a thick-photoresist process and employed for the detection of nitric oxide (NO) released from a population of adherently growing human umbilical vein endothelial cells (HUVEC). The electrodes are tip-shaped and are 40 microm high of which only the top 15 microm are exposed Pt-tips....