Metal oxide negative electrodes for lithium-ion electrochemical cells and batteries
Provided are negative electrode compositions for lithium-ion electrochemical cells that include metal oxides and polymeric binders. Also provided are electrochemical cells and battery packs that include electrodes made with these compositions.
1. An electrode composition for a negative electrode comprising:
a powdered material; and
a polymeric binder,
wherein the powdered material includes an intercalating metal oxide, wherein the metal oxide is capable of undergoing lithiation and delithiation, and wherein the polymeric binder includes a lithium polyacrylate, and
wherein the powdered material comprises LiVO 2 in which up to 15 mole percent of the V is replaced by a combination of lithium and molybdenum.
2. A lithium-ion electrochemical cell comprising:
a positive electrode,
an electrolyte; and
a negative electrode that comprises an electrode composition according to claim 1 .
3. A battery pack comprising at least one lithium-ion electrochemical cell according to claim 2 .
4. An electronic device comprising a battery pack according to claim 3 .
5. An electrode composition for a negative electrode comprising:
a powdered material; and
a polymeric binder,
wherein the powdered material includes an intercalating metal oxide, wherein the metal oxide is capable of undergoing lithiation and delithiation, and wherein the polymeric binder includes a lithium polyacrylate, and
wherein the powdered material comprises at least one of LiVO 2 , Li 1.1 V 0.85 Mo 0.05 O 2 , Li 4 Ti 5 O 12 , TiO 2 , WO 2 , or MoO 2 .
6. A lithium-ion electrochemical cell comprising:
a positive electrode,
an electrolyte; and
a negative electrode that comprises an electrode composition according to claim 5 .
7. A battery pack comprising at least one lithium-ion electrochemical cell according to claim 6 .
8. An electronic device comprising a battery pack according to claim 7 .