[Figure4] (IMAGE) National Research Council of Science & Technology Caption Hard carbon, an anode material for sodium ion batteries, is rapidly prepared through a microwave induction heating Credit Korea Electrotechnology Research Institute Usage Restrictions The sources of photos and research results from KERI must be specified. License Original 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.