Interconnected Hierarchically Porous Graphene-Based Membrane Electrode for High-Power and Long-Cycle Lithium-Oxygen Battery.

ABSTRACT: The energy-power trade-off in lithium-oxygen batteries (LOBs) arises from sluggish oxygen (O₂) transport in the porous positive electrode and pore clogging by lithium peroxide (Li₂O₂). While increasing porosity enhances electrolyte accessibility and Li₂O₂ storage, it also increases electrolyte demand, compromising the overall energy density of the cell and necessitating alternative strategies to boost power capabilities without sacrificing energy density. In this study, theoretical simulations of O₂ transport reveal that reducing tortuosity by improving pore interconnectivity has a more significant impact on O₂ transport than porosity itself. Based on this insight, a freestanding graphene-based electrode with a hi

SUBMITTER: Dutta A 

PROVIDER: S-EPMC12904046 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature