Effect and characterization of dopants to Raney nickel for hydrogen oxidation

Electrocatalysts for hydrogen oxidation and evolution reactions

“…In commercial alkaline fuel cells, Raney Ni has been used as the anode catalyst [102]. Raney Ni is functional under highly alkaline conditions (e.g., 6 mol L −1 KOH), and the HOR activity can be further improved by fabrication of Ni alloys, such as NiMo [97,103] and NiCr [104]. Fuel cells of this type have been successfully used in space.…”

Structure and phase-composition of Ti-doped gas atomized Raney-type Ni catalyst precursor alloys

“…The most common dopants added to Raney-type Ni catalysts are Cr, Mo and Fe [1], although research has been conducted on the use of many other dopants such as Cu, La, Ti [16] and Co [1]. Dopants are typically added to the precursor alloy in small amounts, normally 1-3 at.% [1] with the type of dopant added being dependent on the reaction to be catalysed.…”

Impregnation of metal carbides in Raney Ni–PTFE hydrogen electrodes

“…Addition of PTFE also contributes to better mechanical properties and long-term stability due to its adhesive action to bind other electrode components. The performance of gas diffusion electrodes has been discussed mainly based on the catalytic activity and structural parameters such as pore distribution of macro-and microsizes and also their electroconductivity [4][5][6][7][8][9][10][11][12][13].…”

“…These attempts can be categorized into two methods, i.e., doping method and impregnation method. As the typical example of the doping method, transition metals have been doped into the starting component in the preparation of Raney Ni alloys to improve catalytic activity [7,8]. In contrast, the third materials like carbon black or Cu 2 O are impregnated to increase the conductivity of electrode and/or to modify the interior structure of the electrode [9][10][11][12][13].…”