Ni-H Cylindrical Cell Illustration (IMAGE) Proceedings of the National Academy of Sciences Caption Ni-H cylindrical cell illustration Credit Image courtesy of Wei Chen, Nian Liu, and Yang Jin. 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.