Sharing is vital to a healthy hydrogen safety culture Annemarie Purmer discusses the importance of a sharing and inclusive safety culture in the hydrogen sector ..read more

Decoupled electrolysis for hydrogen production and hydrazine oxidation via high-capacity and stable pre-protonated vanadium hexacyanoferrate Decoupled electrolysis with the aid of a redox mediator offers great flexibility in operation. Here, the authors construct a decoupled electrolysis system for separate hydrogen production and electricity generation to achieve flexible energy conversion and storage using renewables ..read more

Welding of thin stainless-steel sheets using a QCW green laser source ..read more

Stable water splitting using photoelectrodes with a cryogelated overlayer Photoelectrodes made of earth-abundant materials can contribute to low-cost and carbon-free hydrogen production, but suffer from a short lifetime. Here the authors report cryogel overlayer to increase the operation time of the device by regulating evolving hydrogen bubble dynamics ..read more

Ultrastable electrocatalytic seawater splitting at ampere-level current density Renewable-energy-powered electrolysis of seawater provides a sustainable means of mass production of hydrogen, a critical fuel for tomorrow’s energy mix. Here the layered double hydroxide (LDH) electrocatalyst design enables ultrastable seawater splitting at industry-compatible current densities ..read more

Durable electrocatalysts for seawater splitting at the ampere level The development of electrocatalysts with high activity, selectivity and stability for seawater electrolysis remains a challenge. Through engineering of the host layer, interlayer gallery and surface, CoFe-based layered double hydroxides are shown to achieve stable seawater electrolysis for more than 2,800 h at a high current density ..read more

All-perovskite-based unassisted photoelectrochemical water splitting system for efficient, stable and scalable solar hydrogen production Ideal photoelectrochemical systems for hydrogen production should be highly efficient, stable and scalable. Here the authors report that a perovskite-based system with promising efficiency and stability can be scaled to cells of several square centimetres in area as well as formed into mini-modules with overall area >100 cm ..read more

An operationally broadened alkaline water electrolyser enabled by highly stable poly(oxindole biphenylene) ion-solvating membranes Ion-solvating membranes (ISMs) are non-porous polymer films that can uptake KOH and, therefore, conduct ions and be used as separators in electrolysers. Here the authors report an ISM for alkaline water electrolysis with exceptionable stability and broad operability ..read more

Reporting activities for the oxygen evolution reaction The oxygen evolution reaction (OER) is a key enabler of sustainable chemical energy storage. Here, the author assesses the current status of protocols for benchmarking the OER in materials- and device-centered investigations and makes suggestions for more comparable data ..read more

Operando formation of highly efficient electrocatalysts induced by heteroatom leaching Stability of catalyst dopant species under working conditions is often unexplored. Here, the authors reveal that the dopant sites tend to collapse when the applied potential is too negative or too positive and describe a protocol for the in-situ formation of highly efficient active sites via the leaching of dopants ..read more