Oxygen-Rich Lithium Oxide Phases Formed at High Pressure for Potential Lithium-Air Battery Electrode
- Center for High Pressure Science and Technology Advanced Research (HPSTAR), Shanghai 201203 China, High Pressure Synergetic Consortium (HPSynC), Geophysical Laboratory, Carnegie Institution of Washington, 9700 S Cass Avenue, Argonne IL 60439 USA
- Center for High Pressure Science and Technology Advanced Research (HPSTAR), Shanghai 201203 China
- Chemical Science & Engineering Division, Argonne National Laboratory, 9700 S Cass Avenue Argonne IL 60439 USA
The lithium–air battery has great potential of achieving specific energy density comparable to that of gasoline. Several lithium oxide phases involved in the charge–discharge process greatly affect the overall performance of lithium–air batteries. One of the key issues is linked to the environmental oxygen‐rich conditions during battery cycling. Here, the theoretical prediction and experimental confirmation of new stable oxygen‐rich lithium oxides under high pressure conditions are reported. Three new high pressure oxide phases that form at high temperature and pressure are identified: Li 2 O 3 , LiO 2 , and LiO 4 . The LiO 2 and LiO 4 consist of a lithium layer sandwiched by an oxygen ring structure inherited from high pressure ε‐O 8 phase, while Li 2 O 3 inherits the local arrangements from ambient LiO 2 and Li 2 O 2 phases. These novel lithium oxides beyond the ambient Li 2 O, Li 2 O 2 , and LiO 2 phases show great potential in improving battery design and performance in large battery applications under extreme conditions.
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- FG02-99ER45775; DE‐FG02‐99ER45775
- OSTI ID:
- 1358119
- Alternate ID(s):
- OSTI ID: 1392710
- Journal Information:
- Advanced Science, Journal Name: Advanced Science; ISSN 2198-3844
- Publisher:
- WileyCopyright Statement
- Country of Publication:
- Germany
- Language:
- English
Web of Science
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