ALEXANDRIA, Va., July 30 -- United States Patent no. 12,374,721, issued on July 29.
"Rechargeable energy-storage device including partially-hydrolyzed structural hydrogel" was invented by Scott M. Epstein (Medfield, Mass.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A rechargeable energy-storage device includes an anode; a cathode; and a structural hydrogel disposed between the anode and the cathode, the structural hydrogel comprising a partially hydrolyzed polymer having hydrophilic segments and hydrophobic segments, the hydrophilic segments comprising hydrolyzed segments of the partially hydrolyzed polymer, the hydrophobic segments comprising non-hydrolyzed segments of the partially hydrolyzed polymer."...