Science news articles about 'oxygen ions'

... lower than previously studied materials. Researchers suspected the reason lay in the location of the oxygen ions in the crystal framework of the compound. The neutron probes allowed them to determine ...

... Solid oxide fuel cell technology requires ion-conducting materials -- solid electrolytes -- that allow oxygen ions to travel from cathode to anode. However, existing materials have not provided atom- ...

... of metals -- cerium oxide and calcium -- solved that problem, because it promoted the movement of oxygen ions inside the catalyst. When exposed to enough oxygen, the carbon, like the biofuel, is ...

... is also increasing. In fuel cells, platinum is often used as the catalyst for oxygen reduction by splitting oxygen molecules into oxygen ions. However, platinum is rare and expensive: in a fuel cell ...

... to what is called oxidative stress. This theory postulates that when molecules like free radicals, oxygen ions and peroxides build up in cells, they overwhelm the cells' ability to repair the damage ...

... process that prevents cellular damage by reactive oxygen species (ROS). "We may drink pomegranate juice ... signaling. These very small molecules include oxygen ions, free radicals and peroxides. However ...