manganese oxide

Magnesium two-steps lithium ions for better batteries

By April Gocha / April 22, 2015

Research from the University of Illinois at Chicago shows that magnesium ions—with two positive charges—can replace single-charge lithium ions in future batteries.

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Simple nanoscale processes improve electrode performance in Li-ion batteries and supercapacitors

By Eileen De Guire / October 6, 2011

Scanning electron microscope photo of hollow carbon nanofiber-encapsulated sulfur tubes, at the heart of a new battery design. Credit: Wesley Guangyuan Zheng; Stanford Stanford University associate professor of materials science and engineering, Yi Cui, knows his way inside and out of a carbon nanotube, and he’s using his knowledge of that terrain to design new…

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Active oxidation catalyst for Li–air batteries

By Esther Levy / August 24, 2010

Lithium batteries that utilize oxygen as the cathode material are very promising owing to their extremely high theoretical capacity of almost 12,000 Wh kg-1. In these lithium-air batteries, oxygen is adsorbed directly from the atmosphere when required rather than being stored in the battery itself. In practice, a combination of carbon powder, oxygen, oxygen reduction…

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