Materials and mechanisms of high temperature lithium sulfide batteries [electronic resource].

Published:: Washington, D.C. : United States. Dept. of Energy, 1994.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:: 26 pages : digital, PDF file
Additional Creators:: Argonne National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information

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Summary:

New materials have encouraged development of bipolar Li-Al/FeS₂ batteries for electric vehicle (EV) applications. Current technology employs a two-phase Li-alloy negative electrode low-melting, LiCl-rich LiCl-LiBr-KBr molten salt electrolyte, and either an FeS or an upper-plateau (UP) FeS₂ positive electrode. These components are assembled in a sealed bipolar battery configuration. Use of the two-phase Li-alloy (α + β Li-Al and Li₅Al₅Fe₂) negative electrode provides in situ overcharge tolerance that renders the bipolar design viable. Employing LiCl-rich LiCl-LiBr-KBr electrolyte in ``electrolyte-starved`` calls achieves low-burdened cells, that possess low area-specific impedance; comparable to that of flooded cells using LiCl-LiBr-KBr eutectic electrolyte. The combination of dense UP FeS₂ electrodes and low-melting electrolyte produces a stable and reversible couple, achieving over 1000 cycle life in flooded cells, with high power capabilities. In addition, a family of stable sulfide ceramic/sealant materials was developed that produce high-strength bonds between a variety of metals and ceramics, which renders lithium/iron suffide bipolar stacks practical. Bipolar Li-Al/FeS₂ cells and four-cell stacks using these seals are being built and tested in the 13 cm diameter size for EV applications. To date, Li-Al/FeS₂ cells have attained 400 W/kg power at 80% DOD and 180 Wh/kg energy at the 30 W/kg rate. When cell performance characteristics are used to model full-scale EV and hybrid vehicle (HV) batteries, they are projected to meet or exceed the performance requirements for a large variety of EV and HV applications. Efficient production and application of Li-alloys and Li-salt electrolyte are critical to approaching battery cost objectives.

Report Numbers:

E 1.99:anl/cmt/cp--82954
E 1.99: conf-9405130--3
conf-9405130--3
anl/cmt/cp--82954

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Note:

Published through SciTech Connect.
05/01/1994.
"anl/cmt/cp--82954"
" conf-9405130--3"
"DE94012634"
2. Chilean lithium symposium,Santiago (Chile),24-27 May 1994.
Hash, M.C.; Vissers, D.R.; Kaun, T.D.; Henriksen, G.L.; Jansen, A.N.

Funding Information:

W-31109-ENG-38

View MARC record | catkey: 13600715