Lithium/Molybdenum Oxysulfide Secondary Batteries

Abraham, K. M.; Pasquariello, D. M.; Willstaedt, E. B.

doi:10.1149/1.2096686

Cited by 9 publications

(4 citation statements)

References 4 publications

(6 reference statements)

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“…Attempts to cycle an alternate anode fabricated from the chemically prepared WO2 were unsuccessful and were hampered by the mechanical difficulties of making an electrode with good physical integrity. However, a Li=WO2/TiS2 cell was cycled with an electrochemically prepared LiWO2 anode (7). Excellent reversibility was observed in more than 75 deep discharge/charge cycles ob- tained at -0.5 mA/cm 2.…”

Section: Bl ()mentioning

confidence: 99%

“…Di Pietro et al (5) have demonstrated the usefulness of the lithiated oxides LiWO2 and Li~Fe20~ as anodes. Increased interest in these anodes is indicated by recent reports dealing with studies of WOJLi=CoO2 (6), Li=Fe2OJris2 (7), and LixWOj TiS2 (7) cells. In view of these developments it has been of interest to perform detailed physical, chemical, and electrochemical characterization of these electrode materials.…”

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confidence: 99%

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Preparation and Characterization of Some Lithium Insertion Anodes for Secondary Lithium Batteries

Abraham

Pasquariello

Willstaedt

1990

J. Electrochem. Soc.

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The ambient temperature preparation and characterization of LixFe203, Li=WO2, and ~-LiA1 with potential applications as alternative anodes for secondary Li batteries are described. Both ~ and X forms of Fe203 were found to insert a maximum of six LiJFe203 both electrochemically and chemically. The potential plateaus associated with the electrochemical reduction of the two forms of Fe203 varied slightly. Both ~-Li6Fe203 and ~-Li6Fe203 were amorphous and showed a practically useful rechargeable capacity of about 1 equiv of Li at the moderate rate of 0.5 mA/cm 2. Li=WO2 also loses substantial crystallinity upon Li insertion. However, most of the crystallinity was regained upon removal of this Li. It was found to be capable of cycling nearly I equiv of Li at low rates. Several Li-A1 alloys having the ~-LiA1 structure were prepared at ambient temperature from A1 powder and Li-naphthalide. The rechargeability of the chemically prepared 3-LiA1 was poor.

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Section: Bl ()mentioning

confidence: 99%

mentioning

confidence: 99%

Preparation and Characterization of Some Lithium Insertion Anodes for Secondary Lithium Batteries

Abraham

Pasquariello

Willstaedt

1990

J. Electrochem. Soc.

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“…potential, and E °is the potential of the redox shuttle couple. For E >> E °, the limiting shuttle current becomes I, = nFADC/d [2] Additional desirable properties include a low equivalent weight, low volatility, low toxicity, and low cost.…”

Section: Introductionmentioning

confidence: 99%

“…The metallocenes show good stability and are less volatile, but have high equivalent weights and diffuse relatively slowly due to their mass and size. L ' 7 9 ,' 2 In addition, the wide electrochemical stability window of aprotic liquid electrolytes makes the use of high-potential (>4V vs. Li) insertion electrodes advantageous, and the additives reported thus far have onset potentials too low to be of use in these cells. Redox shuttle overdischarge protection in a battery system incorporating a lithium or Li-carbon electrode would require a mobile additive that is reduced at a potential lower than Li+/Li or Li+/LiC, and unreactive toward the positive electrode material.…”

Section: Introductionmentioning

confidence: 99%

Overcharge Protection for Rechargeable Lithium Polymer Electrolyte Batteries

Richardson

Ross

1996

J. Electrochem. Soc.

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Overcharge protection for rechargeable lithium polymer electrolyte cells by addition of redox shuttle additives to the polymer electrolyte was examined. Shuttle onset potentials and effective diffusion coefficients were determined for 12 redox shuttle species in polyethylene oxide-based electrolytes at 85°C. The four most promising additives were tested in Li/PEO-LiN(SO 2 CF 3 ) 2 /Li 2 +xMn 4 0 9 cells under normal and severe overcharging conditions. In addition to tricyanobenzene and tetracyanoquinodimethane, two anionic redox shuttle additives, salts of 1,2,4-triazole and imidazole, demonstrated effectiveness in extending cycle life and good compatibility with cell components.

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