
An Oak Ridge National Laboratory–led team discovered that vanadium dioxide in a crystalline thin film makes an outstanding electrode for lithium-ion batteries.
Researchers have long sought electrically conductive materials for economical energy-storage devices. Two-dimensional (2D) ceramics called MXenes are contenders.
Quasiparticles—excitations that behave collectively like particles—are central to energy applications but can be difficult to detect.
For more than 50 years, scientists have debated what turns particular oxide insulators, in which electrons barely move, into metals, in which electrons flow freely.