3-D Schematic of K+ Doped MnO2 Tunnel (IMAGE) University of Illinois Chicago Caption 3-D schematic shows how doping with potassium may facilitate the insertion of lithium ions into manganese dioxide coated on a current collector. Credit Reza Shahbazian-Yassar/UIC Usage Restrictions 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.