Common-Ion Effect Triggered Highly Sustained Seawater Electrolysis with Additional NaCl Production.

Developing efficient seawater-electrolysis system for mass production of hydrogen is highly desirable due to the abundance of seawater. However, continuous electrolysis with seawater feeding boosts the concentration of sodium chloride in the electrolyzer, leading to severe electrode corrosion and chlorine evolution. Herein, the common-ion effect was utilized into the electrolyzer to depress the solubility of NaCl.

Understanding of Dynamic Contacting Behaviors of Underwater Gas Bubbles on Solid Surfaces.

Understanding of dynamic behaviors of gas bubbles on solid surfaces has significant impacts on gas-involving electrochemical reactions, mineral flotation, and so on in industry. Contact angle (θ) is widely employed to characterize the wetting behaviors of bubbles on solid surfaces; however, it usually fluctuates within the bubble's advancing (θ) and receding (θ) range. Although the term of most-stable contact angle (θ) was defined previously as the closest valuable approximation for thermodynamically meaningful contact angle for a droplet on a solid surface, it has not been widely studied; and the precise θ measurement methods are inadequate to describe bubbles' wetting behaviors on solid surfaces.

An Artificial Electrode/Electrolyte Interface for CO Electroreduction by Cation Surfactant Self-Assembly.

In this work, an artificial electrode/electrolyte (E/E) interface, made by coating the electrode surface with a quaternary ammonium cation (R N ) surfactant, was successfully developed, leading to a change in the CO reduction reaction (CO RR) pathway. This artificial E/E interface, with high CO permeability, promotes CO transportation and hydrogenation, as well as suppresses the hydrogen evolution reaction (HER). Linear and branched surfactants facilitated formic acid and CO production, respectively.