Nanowerk April 7, 2024 Magnetic field effects on electrocatalysis have recently gained attention due to the substantial enhancement of the oxygen evolution reaction (OER) on ferromagnetic catalysts. An international team of researchers (Switzerland, Argentina) used a specifically designed magneto-electrochemical system and non-magnetic electrodes to quantify magnetic field effects. They found marginal enhancement in reactions with high reactant availability, such as the OER, whereas substantial boosts exceeding 50% were observed in diffusion limited reactions, exemplified by the oxygen reduction reaction (ORR). According to the researchers their results advanced the fundamental understanding of magnetic fields in electrocatalysis and unveil new prospects for […]
Tag Archives: Clean energy
Researchers generate fusion at 100 million Kelvin for 20 seconds
Phys.org September 8, 2022 An international team of researchers (South Korea, Princeton University, Columbia University) generated plasmas at a temperature of 100 million kelvin lasting up to 20 seconds without plasma edge instabilities or impurity accumulation. They used edge-transport barrier which shapes the plasma in a way that prevents it from escaping, and an internal transport barrier that works by creating an area of high pressure near the center of the plasma to keep it under control. According to the researchers use of the internal transport barrier resulted in much denser plasma than the other approach. A higher density made it easier […]
It’s in the air – battery discovery takes up the charge
Science Daily February 10, 2022 An international team of researchers (Australia, China, USA – Argonne National Laboratory) describe the details of an Li-O2 battery operated via a new quenching/mediating mechanism that relies on the direct chemical reactions between a versatile molecule and superoxide radical/Li2O2. The battery exhibits a 46-fold increase in discharge capacity, a low charge overpotential of 0.7 V, and an ultralong cycle life greater than 1400 cycles. Redox-active 2,2,6,6-tetramethyl-1-piperidinyloxy moieties bridged by a quenching-active perylene diimide backbone acts as a redox mediator to catalyze discharge/charge reactions and serves as a reusable superoxide quencher to chemically react with superoxide […]