Aluminum/sulfur battery discharge in the high current domain
Journal Article
·
· Journal of the Electrochemical Society
- Technion-Israel Inst. of Tech., Haifa (Israel). Dept. of Chemistry
The search for contemporary batteries with the requisite high power and energy densities for electric propulsion of vehicles has blurred the conventional distinctions of electrochemical storage systems. The author previously introduced an aqueous aluminum/sulfur battery with separate anode and cathode compartments (separated by an ion-selective membrane). The high-capacity cathode compartment contained aqueous polysulfide electrolyte, while the anode compartment contained concentrated alkali, but no polysulfide, electrolyte to prevent chemical attack of the aluminum by solution-phase zero-valent sulfur. The author reports here that concentrated dissolved sulfur, rather than attacking the aluminum anode, permits facile efficient aluminum oxidation. Therefore, a cell configuration without a resistive limiting membrane is feasible. An aluminum/sulfur battery is demonstrated to be capable of sustained current densities of 1 A/cm{sup 2}. High efficiency and current density are important for electric vehicle applications.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 516882
- Journal Information:
- Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 6 Vol. 144; ISSN JESOAN; ISSN 0013-4651
- Country of Publication:
- United States
- Language:
- English
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