High-stability and high-capacity aqueous sodium-ion battery using a high-entropy oxide cathode: intercalation vs. capacitive sodium charge storage | Synapse
April 15, 2026
High-stability and high-capacity aqueous sodium-ion battery using a high-entropy oxide cathode: intercalation vs. capacitive sodium charge storage
Key Points
To evaluate the performance of a high-entropy oxide cathode in aqueous sodium-ion batteries compared to traditional storage mechanisms.
Investigated the composition of high-entropy oxide cathode materials.
Analyzed battery performance in terms of stability and capacity during sodium intercalation and capacitive storage.
Tested the NaMn 0.2 Ni 0.2 Co 0.2 Fe 0.2 Al 0.1 Cu 0.1 O 2 cathode in aqueous conditions.
The high-entropy oxide cathode exhibited enhanced stability in aqueous environments.
Increased charge storage capacity was noted compared to conventional sodium-ion batteries.
Successful intercalation and capacitive storage were observed, outperforming typical configurations.
Abstract
High-entropy oxide cathode (NaMn 0.2 Ni 0.2 Co 0.2 Fe 0.2 Al 0.1 Cu 0.1 O 2 ) is explored as cathode for aqueous sodium-ion batteries.