Negative electrode for lithium secondary cells and lithium secon

Details Negative electrode for lithium secondary cells and lithium secon Negative electrode for lithium secondary cells and lithium secon

1994-09-21

1996-03-12

Willis, Jr., Prince

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

429245, H01M 438, H01M 402, H01M 436

Patent

active

054987644

ABSTRACT:
A negative electrode for lithium secondary cells comprises a substrate having a metallic lithium matrix on at least a surface portion thereof. An element is dispersed and doped in the lithium matrix and has an electronegativity greater than that of metallic lithium. The element is present in the matrix at a concentration of from less than 5.times.10.sup.19 atoms/cm.sup.3 to 5.times.10.sup.15 atoms/cm.sup.3. By this, dendrite crystals of lithium are suppressed from forming during the course of charge and discharge cycles. A lithium secondary cell using the negative electrode is also described.

REFERENCES:
patent: 4645726 (1987-02-01), Hiratani et al.
patent: 5147739 (1992-09-01), Beard
patent: 5162178 (1992-11-01), Ohsawa et al.
patent: 5278005 (1994-01-01), Yamauchi et al.
patent: 5283136 (1994-02-01), Peled et al.

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