Many of the devices that make modern life convenient and efficient rely on rechargeable batteries. Lithium-ion batteries, one ...

“All five of those characteristics depend on the cathode material,” says Alan Nelson, chief technology officer and sector chief executive for new markets at Johnson Matthey, a global leader in ...

A cold cathode is a cathode in a gas-filled electron tube that is not heated by a filament. The voltage potential within the tube is sufficient to ionize the gas and cause the current to flow.