Engineering of Hierarchical and Three‐Dimensional Architectures Constructed by Titanium Nitride Nanowire Assemblies for Efficient Electrocatalysis

Abstract

Electrocatalysts that exhibit both, high performance and durability are essential for the promotion and commercialization of energy conversion devices. Transition metal nitrides (TMNs) hold great potential in many electrochemical catalytic processes, whereas the rational syntheses of highly open and three‐dimensional titanium nitride‐based nanostructures through a facile and efficient strategy is still a challenge. Herein, a scalable and effective method is proposed for the rational synthesis of mono‐ or bi‐metallic titanium nitride with three‐dimensional urchin‐like porous structures, which exhibit high electrochemical stability and structure durability. When being used as the support, the resultant electrocatalyst possesses much higher activity and durability in oxygen reduction reaction as well as methanol oxidation reaction. This work provides a general approach for the rational design of TMN‐based electrocatalysts or devices for application in energy conversion and storage technologies.

Advanced Electrocatalysts for the Oxygen Reduction Reaction in Energy Conversion Technologies

“…In general, it is known that transition metal nitrides (TMNs) are more stable compared with oxides because of the high energy of triple bonds between metal and N atoms. 42,43 Indeed, TMNs have been long investigated as promising ORR electrocatalysts in view of their high conductivity and excellent corrosion resistance. Unfortunately, their ORR activity in acidic electrolytes is mostly undesirable even at the RDE level.…”

Photocatalytic Hydrogen Evolution Using Ternary‐Metal‐Sulfide/TiO2 Heterojunction Photocatalysts

“…The increasing demand for energy and the exhaustion of traditional fossil fuel energy resources have encouraged the development of renewable energy technologies. [1][2][3][4][5] The nonpollution and high energy efficiency properties of hydrogen makes it one of the most promising new energy sources to replace traditional fossil fuel energy. [6][7][8][9][10][11][12] One effective hydrogen production way is water splitting by photocatalytic reaction, and the core component of solar-to-hydrogen energy conversion is the semiconductor photocatalyst.…”

3D porous nanostructured Ni3N–Co3N as a robust electrode material for glucose fuel cell

“…Among these materials, metallic nickel, nickel alloys and nickel compounds are preferred because of their low cost, good electrochemical stability, resistance to poisoning and high catalytic activity in alkaline environment. 18 They are also widely used as bimetallic catalysts for water splitting, 19 oxygen reduction reaction (ORR), 20,21 ethanol, 22,23 hydrazine, 24 methanol 25 and glucose oxidation. 13 Nickel and Cobalt oxides are considered propitious transition metal oxide combinations used for batteries, 26 fuel cell 13 and supercapacitors.…”