Magnetism in Lithium–Oxygen Discharge Product
Dr. Jun Lu, Dr. Hun-Ji Jung, Dr. Kah Chun Lau, Dr. Zhengcheng Zhang, Dr. John A. Schlueter, Dr. Peng Du, Dr. Rajeev S. Assary, Prof. Jeffrey Greeley, Dr. Glen A. Ferguson, Dr. Hsien-Hau Wang, Dr. Jusef Hassoun, Dr. Hakim Iddir, Dr. Jigang Zhou, Dr. Lucia Zuin, Dr. Yongfeng Hu, Prof. Yang-Kook Sun, Prof. Bruno Scrosati, Dr. Larry A. Curtiss and Dr. Kahlil Amine
Article first published online: 13 MAY 2013 | DOI: 10.1002/cssc.201300223
In a spin: The major discharge product formed in the lithium–oxygen cell, lithium peroxide, exhibits a magnetic moment. Density functional calculations predict that “superoxide-like” surface oxygen groups with unpaired electrons exist on nanoparticle surfaces, consistent with magnetic measurements of discharged lithium peroxide products. The “superoxide-like” surface oxygen groups with spin can play a role in the reversible formation and decomposition of lithium peroxide as well as electrolyte molecules.