Phosphorus doped two-dimensional CoFe₂O₄ nanobelts decorated with Ru nanoclusters and Co–Fe hydroxide as efficient electrocatalysts toward hydrogen generation

Abstract

Developing efficient and durable hydrogen evolution reaction (HER) electrocatalysts has attracted considerable concerns for large-scale hydrogen generation. In this work, phosphorous doped two-dimensional (2D) CoFe2O4 nanobelt decorated with Ru and...

Surface-enriched ultrafine Pt nanoparticles coupled with defective CoP as efficient trifunctional electrocatalyst for overall water splitting and flexible Zn-air battery

“…Reducing the loading of noble metals is widely recognized as a valid approach to achieve outstanding catalytic activities but decreasing the cost [17][18][19][20]. Most of the exploited electrocatalysts exhibit single functionality (such as Pt/CoP-catalysts) [21][22][23][24][25], and then complicate the device construction, increase the cost and lower the performance [26][27][28][29]. Therefore, developing electrocatalyst with multifunctional catalytic activities for HER/OER/ORR is a pressing task to simplify the electrodes for the energy storage and conversion devices [30][31][32][33][34][35][36].…”

Ni3Se4/Fe(PO3)2/NF composites as high-efficiency electrocatalysts with a low overpotential for the oxygen evolution reaction

“…Electrocatalytic water splitting is an efficient way to convert electrical energy into renewable hydrogen energy, 1,2 which is environment friendly and non-polluting, 3 thus helping in solving future energy demands and slowing down the ecological destruction of the earth. 4 The electrolysis of water involves two half-reactions that produce hydrogen and oxygen at the cathode and anode, known as the hydrogen evolution reaction (HER) 5,6 and oxygen evolution reaction (OER), 7,8 respectively. However, because the OER reaction has multi-electron transfer steps with multiple active intermediates, the reaction is complex and needs to cross a large energy barrier, 2 the overpotential is often more than twice that of the HER reaction, and the energy conversion rate is greatly limited, 9,10 increasing the electrical energy consumption; 8 thus, the voltage required for water electrolysis is much larger than the theoretical voltage of water decomposition (1.23 V vs. the reversible hydrogen electrode (RHE)), 11 which is an important reason for the competitive disadvantage of hydrogen production from water electrolysis compared with traditional fossil energy hydrogen production.…”

Preparation of carbon coated hyperdispersed Ru nanoparticles supported on TiO2 HER electrocatalysts by dye-sensitization

“…31 Zou et al have summarized the latest progress of supported catalysts for electrocatalysis, and discussed in detail the strategy of selecting and synthesizing supported catalysts and improving supported catalysts. 32 Ruthenium is one of the platinum-group elements and is cheaper than platinum. Ruthenium has a wide range of applications in the field of electrocatalysis, especially for HER reactions, with excellent catalytic performance.…”