A plastic-like battery component can increase its electrical conductivity by 100,000 times just by interacting with sodium.
April 24, 2026
Original Paper
Activation of Hydroxylated Organic Cathodes Enables High-Rate Sodium Batteries
ChemRxiv · chemrxiv.15002325/v1
The Takeaway
Organic batteries are environmentally friendly because they don't use heavy metals, but they usually conduct electricity too poorly to be useful. Researchers found that adding sodium to a hydroxylated organic cathode causes the molecules to repack themselves into a highly conductive grid. This shift increases the material's ability to move electrons by five orders of magnitude. The result is a metal-free battery that can charge and discharge fast enough for high-power devices. This could lead to a new generation of sustainable batteries made from common organic materials.
From the abstract
Organic cathodes are poised to lower transition metal burdens for producing sodium-ion and sodium metal batteries, yet most struggle to achieve premium performance due to low ionic and electronic conductivity. Maintaining a high concentration of mobile sodium ions in redox-active solids for fast ion transport at all states of charge remains a challenge, as does ensuring a high spin density to facilitate long-range electron transport. Here, we show that sodiation of hydroxylated organic cathode m