Rechargeable thin-film lithium batteries

Conference · Sun Aug 01 04:00:00 EDT 1993

OSTI ID:10182920

Bates, J B; Gruzalski, G R; Dudney, N J; Luck, C F; Yu, Xiaohua

Rechargeable thin-film batteries consisting of lithium metal anodes, an amorphous inorganic electrolyte, and cathodes of lithium intercalation compounds have recently been developed. The batteries, which are typically less than 6-{mu}m thick, can be fabricated to any specified size, large or small, onto a variety of substrates including ceramics, semiconductors, and plastics. The cells that have been investigated include Li-TiS{sub 2}, Li-V{sub 2}O{sub 5}, and Li-Li{sub x}Mn{sub 2}O{sub 4}, with open circuit voltages at full charge of about 2.5, 3.6, and 4.2, respectively. The development of these batteries would not have been possible without the discovery of a new thin-film lithium electrolyte, lithium phosphorus oxynitride, that is stable in contact with metallic lithium at these potentials. Deposited by rf magnetron sputtering of Li{sub 3}PO{sub 4} in N{sub 2}, this material has a typical composition of Li{sub 2.9}PO{sub 3.3}N{sub 0.46} and a conductivity at 25{degrees}C of 2 {mu}S/cm. The maximum practical current density obtained from the thin-film cells is limited to about 100 {mu}A/cm{sup 2} due to a low diffusivity of Li{sup +} ions in the cathodes. In this work, the authors present a short review of their work on rechargeable thin-film lithium batteries.

• Research Organization: Oak Ridge National Lab., TN (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 10182920
• Report Number(s): CONF-9308126--4; ON: DE94018957
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250900
BATTERIES
DESIGN
ELECTRIC BATTERIES
ELECTRODES
LITHIUM
PERFORMANCE
SOLID ELECTROLYTES
THIN FILMS