Quantitative Porosity Engineering of Carbon Electrode in Lithium-Oxygen Batteries with Cell-Level Gravimetric Energy Density Over 1500 Wh kg^-1.

ABSTRACT: Lithium-oxygen batteries (LOBs) offer an extremely high theoretical energy density; however, their practical realization depends strongly on the design of porous carbon positive electrodes. Most prior efforts have emphasized material design while overlooking the role of the electrolyte stored within pores, leaving the design principles for achieving practical high-energy-density LOBs unclear. In the present study, through simulations, it is quantitatively demonstrated that while increasing pore volume initially improves energy density, it eventually plateaus due to increasing electrolyte demand. The simulations indicate that reduced electrolyte volumes and optimized mass loading of the positive electrode are crucial for maximizing energy density. Experimental validation with systematically

SUBMITTER: Dutta A 

PROVIDER: S-EPMC12766985 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature