Manganese, bismuth mixed metal oxide cathode for...

Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Electrode

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C429S218100, C429S232000, C252S518100, C252S519130, C423S599000, C423S594700

Reexamination Certificate

active

07011908

ABSTRACT:
The present invention provides a manganese bismuth mixed metal oxide cathode material through a solid-state reaction between manganese dioxide, and either bismuth or a bismuth compound in a compound having the general formula MnOy(Bi2O3)x, which affords charge transfer catalytic behavior that allows the cathode to be fully reversible at suppressed charge potentials and increased discharge potentials. The MnOy(Bi2O3)xcathode material may be incorporated into an electrochemical cell with either a lithium metal or lithium ion anode and an organic electrolyte. The present invention provides a compound with the general formula MnOy(Bi2O3)x, where subscript x is between 0.05 and 0.25, subscript y is about 2 and the overcharge protection is not needed as the subscript z approaches 0.0. In the preferred embodiment, a cathode material where subscript x is between 0.05 and 0.135 with the formula MnO2(Bi2O3)0.12provides the much-needed full reversibility, high voltage stability and reduced charge transfer impedance. A manganese bismuth mixed metal oxide cathode for an lithium electrochemical system, a lithium electrochemical system and a rechargeable lithium battery employing the same compound with the general formula MnOy(Bi2O3)xand methods for making manganese bismuth mixed metal oxide cathode material for lithium electrochemical devices having the general formula MnOy(Bi2O3)xare also provided.

REFERENCES:
Atwater et al. “Thermodynamic and kinetic study of the Li/MnO2 Bi2O3 electrochemical couple”. Journal of the Electrochemical Society, vol. 145, No. 3, Mar. 1998, pp. L31-L33.
Atwater et al. “Electrochemical properties of the Li/MnO2 Bi2O3 couple”, Proceedings of the Power Sources Conference (1998), 38th.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Manganese, bismuth mixed metal oxide cathode for... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Manganese, bismuth mixed metal oxide cathode for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Manganese, bismuth mixed metal oxide cathode for... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3532662

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.