Chao Lin

Gold nanoparticles (Au NPs) were prepared by reducing HAuCl4 with NaBH4. Their average particle sizes could be tuned in the range of 1.7 and 8.2 nm, by adjusting the amount of NaBH4 used during synthesis. The obtained Au NPs (colloids) were then loaded onto a commercial Al2O3 support to prepare Au/Al2O3 catalysts with tunable Au particle sizes. An optimal pH value (5.9) of the Au colloid solution was found to be essential for loading Au NPs onto Al2O3 while avoiding the growth of Au NPs. Au NPs

Phase transformation of electrode materials widely occurs in electrocatalytic reactions. Metal oxides are promising electrocatalysts for the oxygen evolution reaction (OER); their phase transformation is a key step for the multi-electron OER, and requires extra overpotential. However, little attention has been paid to accelerating and enhancing the phase transformation. Here, we report for the first time that single-atom Pt incorporated into the bulk crystalline phase of porous NiO nanocubes (0.

A “three birds one stone” strategy for preparing 1D N-doped porous carbon nanotubes embedded with Co@CoO_x nanoparticles results in the unprecedentedly high-rate Zn–air batteries.

Zinc-air batteries (ZABs) are vulnerable to the ambient environment (e.g., humidity and CO₂ ), and have serious selfdischarge issues, resulting in a short shelf life. To overcome these challenges, a near-neutral quaternary ammonium (QA) functionalized polyvinyl alcohol electrolyte membrane (different from conventional alkali-type membranes) has been developed. QA functionalization leads to the formation of interconnected nanochannels by creating hydrophilic/-phobic separations at the

Developing low-cost and high-performance bifunctional oxygen electrocatalysts is essential for commercial realization of regenerative fuel cells and rechargeable metal air batteries. Iron carbide (Fe3C) is an ideal electrocatalyst candidate; however, its poor oxygen evolution reaction (OER) activity and stability make it serve only as a unifunctional oxygen reduction reaction (ORR) electrocatalyst. Here, we report a robust bifunctional electrocatalyst consisting of manganese–iron binary carbide

Molybdenum-doped mesoporous SBA-15, mesoporous SBA-15-supported MoO3/SBA-15, and traditional silica-supported MoO3/SiO2 were successfully synthesized. Various techniques, such as XRD, TEM, BET, UV-DRS, Raman, XPS and IR, were used to characterize the above obtained materials. The studies of TEM, XRD and BET confirmed that the highly ordered mesoporous structure of SBA-15 was maintained in the doped Mo-SBA-15 whereas supported MoO3/SBA-15 showed a significant reduction in surface area due to the

Creating highly effective electrocatalysts for the oxygen evolution reaction (OER) holds paramount importance in advancing carbon-neutral hydrogen production through water electrolysis. Recent research highlights the crucial role of spin effects on the OER, emphasizing that the manipulation of spin polarization is a promising strategy to augment the OER kinetics. Here, we present a core–shell heterostructure electrocatalyst, which leverages the strong coupling of the interface between antiferrom

Biomass derived flexible and rechargeable Zn–air batteries achieved a record round-trip efficiency of 75%.

A synthetic strategy utilizing a predesigned organic framework is demonstrated to construct high-density single-atom catalysts for long-lasting zinc–air flow batteries.

The oxygen evolution reaction (OER) is crucial for applications such as water splitting and rechargeable metal-air batteries. Recent research has focused on improving the activity and stability of OER electrocatalysts through various strategies including structural innovation, heteroatom doping, and conductivity enhancement. Among these, defect engineering has proved particularly effective, allowing precise modulation of the materials' electronic structure at the atomic level. This review addres

Abstract Rapid cost reduction of green hydrogen is essential for the large‐scale deployment of hydrogen‐based energy system. A major component in achieving this is the development of advanced water electrolyzers. Sluggish oxygen evolution reaction (OER) is the bottleneck for water electrolysis, and tremendous efforts have been devoted to develop electrocatalysts that accelerate the OER kinetics. Recent advances have highlighted the potential of precious metal‐free OER electrocatalyst capable of