High storage capacity, energy density, safety and cyclic stability of 2D biphenylene oxide anodes for Li-, Na-, and K- metal ion batteries

https://www.eurekalert.org/news-releases/1097393

"thermodynamically, mechanically, dynamically stable... oxygen atom adsorption on biphenylene sheet induces metal-to-semiconductor transition... 1.14 eV (1.83 eV) biphenylene oxide indirect band gap, 1826 mAh/g (Li), 1065 mAh/g (Na), 913 mAh/g (K) storage capacities, 4218 mWh/g (Li), 1991 mWh/g (Na), 1570 mWh/g (K) energy densities, 0.19 eV (Li), 0.34 eV (Na), 0.07 eV (K) metal diffusion barriers, 0.73 V (Li), 0.84 V (Na), 1.21 V (K) open-circuit voltages, 0.93% volume change (Li) 3.74% (Na)"