A novel, completely solid, rechargeable air battery

”This technology can extend the battery life of small electronic gadgets such as smartphones”

15-Jun-2023 - Metals are typically used as active materials for negative electrodes in batteries. Recently, redox-active organic molecules, such as quinone- and amine-based molecules, have been used as negative electrodes in rechargeable metal–air batteries with oxygen-reducing positive electrodes. Here, ...

Scientists grow carbon nanotube forest much longer than any other

Novel technique yields a carbon nanotube forest of record length, potentially revolutionizing the future of many industries

06-Nov-2020 - Today, a multitude of industries, including optics, electronics, water purification, and drug delivery, innovate at an unprecedented scale with nanometer-wide rolls of honeycomb-shaped graphite sheets called carbon nanotubes (CNTs). Features such as light weight, convenient structure, immense ...

Dancing chemicals

Innovative catalytic reaction for low-cost synthesis of aromatic esters

16-Jul-2020 - Aromatic esters are chemicals that contain an aromatic ring consisting of functional groups called esters. These organic compounds are widely used as chemical feedstock in industries like food and beverages, pharmaceuticals, and cosmetics. Thus, finding efficient reactions for their synthesis is ...

New method converts carbon dioxide to methane at low temperatures

02-Mar-2020 - A new method developed by a team of Waseda University scientists led by Professor Yasushi Sekine may contribute to reducing the use of fossil fuels and help prevent global warming in the long-run. The conversion of carbon dioxide to valuable chemicals such as methane has drawn great attention for ...

Dramatic improvement in surface finishing of 3-D printing

15-Mar-2017 - Waseda University researchers have developed a process to dramatically improve the quality of 3D printed resin products. The process combines greatly improved surface texture and higher structural rigidity with lower cost, less complexity, safer use of solvent chemicals and elimination of ...

Revolutionary process to create ether from esters using metal catalysts

08-Mar-2017 - A group of Waseda University researchers has developed a new process using palladium or nickel as a catalyst for removing carbon monoxide from esters to produce ethers. This innovation provides new opportunities for development of drugs to fight cancer, malaria and more. The conventional method ...

Improved polymer and new assembly method for ultra-conformable 'electronic tattoo' devices

27-Feb-2017 - A group of researchers at Waseda University has developed processes and materials for ultrathin stick-on electronic devices using elastomeric "nanosheet" film, achieving ease of production while also preserving high elasticity and flexibility fifty times better than previously reported polymer ...

Hydrogen in your pocket?

New plastic for carrying and storing hydrogen

01-Dec-2016 - A Waseda University research group has developed a polymer which can store hydrogen in a light, compact and flexible sheet, and is safe to touch even when filled with hydrogen gas. Although research and development on technology allowing hydrogen to become a major energy source have been going on ...

Nanoparticle dialysis

Scientists in Japan have made dispersed, colloidal mesoporous silica nanoparticles using dialysis

17-Aug-2009 - Kazuyuki Kuroda and colleagues from Waseda University have discovered another way of synthesizing colloidal mesoporous silica nanoparticles (CMSS). Kuroda has shown that they can successfully remove the surfactants via dialysis, whist still maintaining particle dispersion. Colloidal ...