A novel non-noble electrocatalyst for oxygen reduction in proton exchange membrane fuel cells

Cathode catalysts for fuel cell development: A theoretical study based on band structure calculations for tungsten nitride and cobalt tungsten nitrides

“…Based on these results, the transition metal nitrides have been studied as cathode catalysts. Zhong et al [8] reported that W 2 N/C exhibited the maximum power density of 39.2 mW cm −2 . Choi and Kumta [9] investigated the synthesis, structure, and electrochemical properties of the tantalum and tungsten nitrides, and reported that the highest capacitance was 30 F/g for WN when tested at the scanning rate of 2 mV/s.…”

Electrocatalysis by nanocrystalline tungsten carbides and the effects of codeposited silver

“…Sputtered nickel tantalum carbide has shown electrocatalytic activity as both an anode and cathode [11]. Iron, cobalt and nickel-based porphyrins [12,13] have shown some electrocatalysis towards oxygen reduction and molybdenum nitride [14] and tungsten nitride [15] have been suggested as a possible alternative cathode electrocatalysts.…”

A novel amphoteric ion-exchange membrane prepared by the pore-filling technique for vanadium redox flow batteries

“…The combination of renewable resources and energy storage can increase the quality and stability of renewable energy. As one type of energy storage device, the vanadium redox flow battery (VRB) is well-suited for large-scale utility applications, owing to its attractive features such as long life, active thermal management, and independence from energy and power rating [6,7]. The ion-exchange membrane (IEM) is one of the key components of VRBs and is used to prevent the crossover of vanadium ions, while allowing the transport of ions to complete the conducting circuit.…”