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Developing durable catalysts for the acidic oxygen evolution reaction is crucial for proton exchange membrane water electrolyzers. Here, the authors report incorporating high-entropy atoms (Co, Ni, Cu, Mn, Sm) into RuO₂ via annealing, achieving stable operation at 1 A cm⁻² and 50 °C for 1500 h.

While the conversion of CO₂ to high-value products provides a promising means to remove and utilize atmospheric carbon, few materials can do so without wasteful, sacrificial reagents. Here, authors prepare single-atom Co on Bi₃O₄Br nanosheets as CO₂ reduction catalysts using water and light.

The authors fabricate p-type Fe₃CoSb₁₂-based skutterudite films exhibiting high thermoelectric performance, stability, and flexibility at medium-to-high temperatures, based on preparing custom target materials and pulsed laser deposition techniques.

Changes in Polycomb repression during interphase transition modulate the ability of pluripotent cells to enter cell differentiation.

Active sites identification in metal-free carbon materials is crucial for developing practical electrocatalysts. Here the authors report a dynamic active site evolution phenomenon on oxygen modified defective graphene during electrochemical H2O2 production.

The de novo synthesis of enzyme-like active sites remains a challenge, due to the difficulties in imitating the spatial arrangement of the functional groups. Here, the authors report the construction of a supramolecular mimetic enzyme possessing catechol oxidase-like copper-cluster active sites.

The authors report an in situ investigation of interfacial hydrogen spillover in Pd/ZIF-8 structures with X-ray and Raman techniques. A mechanistic picture of how Pd/ZIF-8 catalyst mediate alkyne semihydrogenation to alkynes is described.

The structural modification of inactive materials to effectively engineer active catalysts is very attractive. Here, layered crystalline Pd₃P₂S₈ is transformed by electrochemical lithiation into amorphous Li-incorporated nanodots. This process turns the inert parent material into a highly active and stable hydrogen-evolving catalyst.

A sustainable photocatalytic methane halogenation strategy is developed for methyl halide production using low-cost alkali halides over Cu-doped TiO2 nanostructures. Copper sites ultimately stabilize *CH3 to promote reaction with Cl− to form CH3Cl.

Electrocatalysts based on earth-abundant elements have emerged as promising candidates to replace noble metal materials. Here, the authors develop porous hybrid nanostructures combining amorphous Ni-Co complexes with 1T phase MoS₂for enhanced electrocatalytic activity for overall water splitting.

While light-driven water splitting offers a renewable means to produce fuel, the limited availability of high-performance materials inspires the search for new photocatalysts. Here, authors demonstrate two-dimensional NiPS₃ to enhance semiconductor photocatalytic H₂ evolution activities.

Aqueous Zn metal batteries are a promising system for high-power electrochemical energy storage. Here, the authors investigate a defective V₂O₃ cathode via neutron and X-ray techniques and test the material in Zn metal cell configuration for 30k cycles.

Lithium selenium batteries are attractive energy storage systems, but they are hindered by low selenium reaction activity and rapid capacity fading. Herein, the authors report a selenium host with atomic cobalt electrocatalyst which exhibits superior performances in lithium-selenium batteries.

Water splitting by nanostructured, abundant catalysts provides a renewable means to make carbon neutral fuels, but the ideal material morphology and composition remain uncertain. Here, the authors prepare superaerophobic, multi-metallic sulfide nanotube arrays as bifunctional water splitting catalysts.

Heavy metal removal from polluted water is of global significance, but current adsorbents are limited by their specificity towards certain metals. Here the authors incorporate a non-specific and strong chelating group into a robust metal-organic framework and demonstrate its versatility for heavy metal adsorption.

Isolating metal atoms on supports is becoming an increasingly studied approach to design water splitting electrocatalysts. Here, the authors prepare a hydrogen evolution catalyst comprising atomically dispersed Pt atoms on curved carbon supports, which outperform similar catalysts where the support is flat.

Nanostructures with atomic-level thicknesses have the potential to exhibit unique size-dependent properties. Here the authors fabricate sulfur-doped molybdenum oxide architectures with tunable ring-in-ring morphologies and strong visible- and IR-light absorption, endowing them with a range of photoresponsive properties.

X-ray absorption fine structure spectroscopy is pivotal for analyzing catalyst surface interfaces. This Review highlights the advantages of X-ray Absorption fine structure spectroscopy for identifying configurations and dynamic transformations of CO₂ reduction reaction electrocatalysts.