Abstract
Oxygen reduction/evolution reactions (ORR/OER) engineering is the crucial problem of lithium-oxygen battery (LOB) R&D. This work shows that the influence of the pore structure of an active material exceeds the influence of its catalytic properties in ORR/OER in terms of LOB capacity. An original approach to the LOB scaling-up is suggested that is partially based on the principles of the cathode operation in hydrogen-oxygen fuel cell. The discharge capacity of the scaled-up LOB reaches 0.375 A h at the positive electrode surface area of 25 cm2, which is at the level of the best results for LOBs with an aprotic electrolyte described earlier.
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