Lithium-Excess Molybdenum Chromium Oxides for Lithium Ion Battery Cathodes
This technology is a novel family of cathode materials that can produce high capacity and high energy density lithium-ion batteries using inexpensive metals. The positive electrode active material is a lithium-excess metal oxide characterized by a composition of LixMyO2 and a disordered rocksalt structure (DRX).
Researchers
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high-capacity positive electrode active material
European Patent Convention | Granted | 3,944,374 -
high-capacity positive electrode active material
United States of America | Granted | 9,780,363 -
molybdenum oxides and uses thereof
United States of America | Granted | 9,960,417 -
high-capacity positive electrode active material
United States of America | Granted | 10,957,901 -
high-capacity positive electrode active material
Japan | Granted | 6,788,626 -
high-capacity positive electrode active material
China | Granted | 104,685,679 -
high-capacity positive electrode active material
European Patent Convention | Granted | 2,904,655 -
high-capacity positive electrode active material
Korea (south) | Granted | 10 -
lithium-excess molybdenum chromium oxides for lithium ion battery cathodes
European Patent Convention | Published application -
high-capacity positive electrode active material
Germany | Granted | 2,904,655 -
high-capacity positive electrode active material
France | Granted | 2,904,655 -
high-capacity positive electrode active material
Finland | Granted | 2,904,655 -
high-capacity positive electrode active material
United Kingdom | Granted | 2,904,655 -
high-capacity positive electrode active material
Sweden | Granted | 2,904,655 -
high-capacity positive electrode active material
Hungary | Granted | 2,904,655 -
high-capacity positive electrode active material
Poland | Granted | 2,904,655 -
high-capacity positive electrode active material
Germany | Granted | 3,944,374 -
high-capacity positive electrode active material
France | Granted | 3,944,374 -
high-capacity positive electrode active material
Poland | Granted | 3,944,374 -
high-capacity positive electrode active material
United Kingdom | Granted | 3,944,374 -
high-capacity positive electrode active material
Hungary | Granted | 3,944,374 -
high-capacity positive electrode active material
Sweden | Granted | 3,944,374 -
high-capacity positive electrode active material
Finland | Granted | 3,944,374 -
high-capacity positive electrode active material
European Patent Convention | Published application -
high-capacity positive electrode active material
Korea (south) | Published application
Technology
The DRX technology comprises lithium-excess metal oxide cathodes with the composition LixMyO2 and a disordered rocksalt structure for rechargeable lithium-ion batteries. The enablement of cathodes with the rocksalt structure enables the use of inexpensive metals. Resulting cathode materials have high energy density, good long-term stability, and increased charge/discharge rate capability. Unlike traditional materials that demand precise cation ordering to prevent capacity degradation, this material is insensitive to cation-disorder, thereby not requiring the use of nickel and/or cobalt.
Problem Addressed
Conventional high energy cathode materials in rechargeable lithium batteries have a layered structure which requires nickel and/or cobalt to remain stable over long cycling. This technology significantly broadens the composition space from which cathodes can be selected by utilizing a material that can accommodate cation mixing without compromising performance, thereby addressing cost and resource problems with conventional lithium-ion cathodes.
Advantages
- High reversible capacity, improving the energy density of lithium secondary batteries
- Insensitivity to cation-disorder, enabling the use of less expensive transition metals, such as manganese, titanium, vanadium, iron, chromium, molybdenum, niobium, etc.
- Use of stable cathodes in the charged state, increasing safety of lithium-ion batteries
- Use of less resource-constrained metals in the Li-ion battery industry
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