Improvement of Electrochemical Properties of Lithium–Oxygen Batteries Using a Silver Electrode

Journal Article · Thu Jul 09 00:00:00 EDT 2015 · Journal of Physical Chemistry. C

DOI:https://doi.org/10.1021/acs.jpcc.5b04653· OSTI ID:1390906

Park, Jin-Bum; Luo, Xiangyi; Lu, Jun; Shin, Chang Dae; Yoon, Chong Seung; Amine, Khalil; Sun, Yang-Kook

Silver (Ag) electrodes are prepared by an electrodeposition method at -0.25 V versus SCE. To evaluate the effect of particle size on Li–air cells, deposition times are 3, 10, 30, and 300 s. When cycled at a current density of 0.032 mA cm–2, the Ag-deposited electrode for 300 s shows very low polarization corresponding to the oxygen evolution reaction potential at 3.6 V. X-ray diffraction studies confirm that the main discharge product is Li2O2, and the results of scanning electron microscopy and transmission electron microscopy of the discharged electrodes show lithium peroxides at different positions due to the limitation of active sites on silver particles.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: Korea Institute of Energy Technology Evaluation and Planning (KETEP); USDOE Office of Science (SC), Basic Energy Sciences (BES); National Research Foundation of Korea (NRF)
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 1390906
• Journal Information: Journal of Physical Chemistry. C, Vol. 119, Issue 27; ISSN 1932-7447
• Publisher: American Chemical Society
• Country of Publication: United States
• Language: English

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