MIT News  August 15, 2024 The use of wet chemistry in battery technologies limits their potential to be scaled down beyond millimeters in size. A team of researchers in the US (MIT, University of Pennsylvania, University of Michigan) photolithographically patterned a microscale zinc/platinum/SU-8 system to generate the highest energy density microbattery at the picoliter scale. The device scavenges ambient or solution-dissolved oxygen for a zinc oxidation reaction, achieving an energy density ranging from 760 to 1070 watt-hours per liter at scales below 100 micrometers lateral and 2 micrometers thickness in size. The processes allow 10,000 devices per wafer to be […]