There are a few different ways to measure electrical energy. We can talk about voltage, which is a measure of electric potential. You’ve probably noticed that your DeWalt tools and batteries operate with a certain number of volts. Most have a specific voltage, while others can flex between multiple voltages. We can also talk about amp-hour (Ah), which is a measure of a battery’s charge capacity and how many amps it can deliver over time. For instance, if a battery has a charge capaci...

Could an electric vehicle travel from Seoul to Busan and back on a single charge? Could drivers stop worrying about battery performance even in winter? A Korean research team has taken a major step toward answering these questions by developing an anode-free lithium metal battery that can deliver nearly double driving range using the same battery volume. A joint research team led by Professor Soojin Park and Dr. Dong-Yeob Han of the Department of Chemistry at POSTECH, together with Professor Na...