Nanorods in Positive Electrode (image) Stanford University Share Print E-Mail Caption The manganese dioxide nanorods used to make the postiive electrode of Yi Cui's new battery that generates power by using the salinity contrast between fresh and salt water. Credit Courtesy of Yi Cui. Usage Restrictions May not be altered or sold. 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.