High Rate Oxygen Reduction in Non-aqueous Electrolytes with the Addition of Perfluorinated Additives
The discharge rate capability of Li-air batteries is substantially increased by using perfluorinated compounds as oxygen carriers. The solubility of oxygen in a non-aqueous electrolyte can be significantly increased by the introduction of such compounds, which leads to the increase in the diffusion-limited current of oxygen reduction on the gas diffusion electrode in a Li-air battery. The perfluorinated compound is found to be stable within the electrochemical window of the electrolyte. A powder microelectrode and a rotating disk electrode were used to study the gas diffusion-limited current together with a rotating disk electrode. A 5 mA cm{sup -2} discharge rate is demonstrated in a lab Li-O{sub 2} cell.
- Research Organization:
- BROOKHAVEN NATIONAL LABORATORY (BNL)
- Sponsoring Organization:
- USDOE EE OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY (EERE)
- DOE Contract Number:
- AC02-98CH10886
- OSTI ID:
- 1040489
- Report Number(s):
- BNL--96230-2011-JA; VT0301010
- Journal Information:
- Energy and Environmental Science, Journal Name: Energy and Environmental Science Journal Issue: 9 Vol. 4; ISSN 1754-5692
- Country of Publication:
- United States
- Language:
- English
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