A study team headed by Prof. Zhiyi Lu from the Ningbo Institute of Materials Technology and Engineering (NIMTE) of the Chinese Academy of Sciences (CAS) has suggested a facile and affordable strategy to synthesize a hybrid cathode to acquire high-performance seawater electrolysis for the generation of hydrogen.
Hybrid cathode enables scalable high-performance hydrogen generation techxplore.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from techxplore.com Daily Mail and Mail on Sunday newspapers.
A recent study published in Nature Communications addresses this problem by offering a generic 4D printing technique for producing MXene hydrogels with adjustable geometries.
Abstract
Big volume changes, the shuttle effect, and poor conductivity are well-known, critical issues of sulfur electrodes that prevent practical application of lithium-sulfur batteries. The design of active materials with a conductive shell provides an effective solution. Traditional strategies have long been limited for practical applications; however, by low productivity and time/energy consuming template-based methods. Here, a facile template-free self-caging nanotechnology for the scalable fabrication of graphene@sulfur nanocages with atomic-scale shells is reported. To do that, a new sulfur-graphene nanochemistry based on a reductive sulfur solution and oxidative sulfonated-graphene dispersion is developed for the first time. With only the help of mechanical mixing, sulfur particles are successfully synthesized in situ and encapsulated into reaction-induced self-assembled sulfonated-graphene nanocages. These unique nanocages not only provide accommodation of the big volume ch
New Technique Improves Stability, Efficiency of Solar Cell Modules
Written by AZoMJan 28 2021
A group of scientists from the Okinawa Institute of Science and Technology Graduate University (OIST) has used a new fabrication method to create perovskite solar modules that have enhanced efficiency and stability with fewer defects.
Perovskite solar cell devices require multiple layers to function. The active perovskite layer absorbs sunlight and generates charge carriers. The transport layers transport the charge carriers to the electrodes, releasing a current. The active perovskite layer is formed from many crystal grains. The boundaries between these grains, and other defects in the perovskite film, such as pinholes, lower the efficiency and lifespan of the solar devices. Image Credit: Okinawa Institute of Science and Technology Graduate University.