Ready for Testing (IMAGE) Aalto University Caption Finnish researchers found a way to significantly improve the durability of Lithium-ion batteries by covering the electrodes of lithium iron phosphate batteries with extremely thin protective layers, and by increasing the potential of lithium iron phosphate used as a positive electrode by doping. Credit Aalto University 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.