Schematic of the Preparation (IMAGE) American Institute of Physics Caption This is a chematic of the preparation of a 3-D hierarchically structured graphene-sulfur/carbonZIF8-D composite. Credit K.Xi/Cambridge Usage Restrictions This image may be used only with appropriate caption and credit. 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.