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Intermetallic negative electrodes for non-aqueous lithium cells and batteries

Patent ·
OSTI ID:1174832
; ; ; ; ;
A method of operating an electrochemical cell is disclosed. The cell has an intermetallic negative electrode of Cu.sub.6-x M.sub.x Sn.sub.5, wherein x is .ltoreq.3 and M is one or more metals including Si and a positive electrode containing Li in which Li is shuttled between the positive electrode and the negative electrode during charge and discharge to form a lithiated intermetallic negative electrode during charge. The voltage of the electrochemical cell is controlled during the charge portion of the charge-discharge cycles so that the potential of the lithiated intermetallic negative electrode in the fully charged electrochemical cell is less than 0.2 V but greater than 0 V versus metallic lithium.
Research Organization:
University Of Chicago, Chicago, IL (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
W-31109-ENG-38
Assignee:
University Of Chicago
Patent Number(s):
6,730,429
Application Number:
10/008,885
OSTI ID:
1174832
Country of Publication:
United States
Language:
English

References (7)

In Situ X-Ray Study of the Electrochemical Reaction of Li with ηʹ-Cu[sub 6]Sn[sub 5] journal January 2000
NiAs- versus zinc-blende-type intermetallic insertion electrodes for lithium batteries: lithium extraction from Li2CuSn journal November 1999
Copper–tin anodes for rechargeable lithium batteries: an example of the matrix effect in an intermetallic system journal September 1999
Science and Applications of Mixed Conductors for Lithium Batteries journal March 2000
Li[sub x]Cu[sub 6]Sn[sub 5] (0 journal January 1999
Intermetallic insertion electrodes derived from NiAs-, Ni2In-, and Li2CuSn-type structures for lithium-ion batteries journal March 1999
Lithium storage properties of nanocrystalline eta-Cu6Sn5 alloys prepared by ball-milling journal March 2000

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25 ENERGY STORAGE