Metallic negative electrode materials for rechargeable nonaqueous batteries
Metallic negative electrode materials for nonaqueous lithium-ion batteries were prepared, characterized, and demonstrated. The materials with the best electrical performance are nickel-tin alloys, have small particle size, and can incorporate up to 550 mAh/g of lithium. These materials offer specific capacity, capacity density, and reversibility comparable to tin oxides without the high irreversible capacity that has precluded tin oxide commercialization. When cycled calvanostatically, the nickel-tin alloy offer low capacity fade while reversibly incorporating lithium up to 327 mAh/g or 2,740 mAh/mL, over four times the capacity density typical for current carbonaceous Li-ion negative electrode materials. The irreversible capacity associated with these materials is 26%, or 76 mAh/g, when utilized at 300 mAh/g. When utilized in prototype Li-ion cells vs. either a LiNi{sub 1{minus}x}Co{sub x}O{sub 2} or LiMn{sub 2}O{sub 4} cathode material, low capacity fade was demonstrated while the metallic negative electrode material was utilized at 1500 mAh/mL.
- Research Organization:
- Yardney Technical Products, Inc., Pawcatuck, CT (US)
- OSTI ID:
- 20030643
- Journal Information:
- Journal of the Electrochemical Society, Vol. 147, Issue 3; Other Information: PBD: Mar 2000; ISSN 0013-4651
- Country of Publication:
- United States
- Language:
- English
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