NCNF Composite (IMAGE) Science China Press Caption This is a schematic diagram of lithium nucleation and deposition behavior on Cu foil, low nitrogen-doping level carbon nanofiber framework and high nitrogen-doping level carbon nanofiber framework. Credit ©Science China Press Usage Restrictions None License Licensed content 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.