Schematics of the Protection Mechanism of Boron Nitride (BN) and Characterizations of BN Nanofilm (image) Columbia University School of Engineering and Applied Science Share Print E-Mail Caption The left visual shows that a Lithium aluminum titanium phosphate (LATP) pellet that touches lithium metal will be immediately reduced. The severe side reaction between lithium and solid electrolyte will fail the battery in several cycles. The right shows that an artificial BN film is chemically and mechanically robust against lithium. It electronically isolates LATP from lithium, but still provides stable ionic pathways when infiltrated by polyethylene oxide (PEO), and thus enables stable cycling. Credit Qian Cheng/Columbia Engineering Usage Restrictions Please credit as: Qian Cheng/Columbia Engineering Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.