Metal-organic framework electrodes for sodium ion batteries

DWPI Title: Sodium ion (Na-ion) battery used as, e.g., coin cell battery, causes positive Na-ions to deintarcalate from cathode and migrate to anode when charging, and causes sodium to migrate from anode and intercalate back to cathode when discharging
Abstract: A sodium ion battery comprises a cathode having a porous redox active metal-organic framework material. The battery can be an organic electrolyte sodium ion battery wherein the electrolyte comprises a sodium salt dissolved in an organic solvent or mixture of organic solvents. Alternatively, the battery can comprise an aqueous sodium ion battery wherein the electrolyte comprises a sodium salt dissolved in an aqueous solvent. Battery performance is especially related to electrolyte and binder selection.
Use: Na-ion battery used as, e.g., coin cell battery.
Advantage: Provides Na-ion battery that ensures improved battery performance due to improved electrolyte and binder selection in making the Na-ion battery. Includes metal-organic framework electrodes to prevent electrolyte breakdown.
Novelty: The Na-ion battery includes a cathode, a sodium anode, and an ion-conductive electrolyte between the cathode and anode. The cathode has a porous redox active metal-organic framework material that includes a redox active metal center and an organic linker. Charging of the Na-ion battery causes positive Na-ions to deintercalate from the cathode and migrate through the ion-conductive electrolyte to the anode. Discharging the Na-ion battery causes some of the sodium to reversibly migrate from the anode and intercalate back into the cathode.
Filed: 4/18/2019
Application Number: US16388217A
Tech ID: SD 13942.2
This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention.
Data from Derwent World Patents Index, provided by Clarivate
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