An ORR–OER mechanism is proposed to describe the interesting formation of particle- and film-type Li 2O 2 deposits at different cycles for the MnO/CoMn 2O nanorod cathodes.
#Mof core shell structure nanoparticle full
The improved structural features allow the MnO/CoMn 2O nanorod cathode-based LOB cells to exhibit superior full specific discharge capacity of 8,625 mAh The N–C shell increases electronic conductivity, hierarchical porosity, specific surface area, and protects the core and interstitial decoration against lithium peroxide (Li 2O 2) passivation. The MnO core renders Mn active sites and oxygen vacancies, while the CoMn 2O 4 interstitial decoration gives additional Mn, Co active sites, thereby enhancing bifunctional electrocatalytic ORR–OER. The MnO/CoMn 2O nanorods feature a MnO nanorod core with CoMn 2O 4 nanoparticle interstitial decoration, both coated by an N–C conductive shell.
Hierarchically porous manganese oxide/cobalt carbon (MnO/CoMn 2O nanorods with interstitially decorated CoMn 2O 4 nanoparticles are synthesized via one-step carbonization of metal–organic framework (MOF)-coated α˗manganese oxide (α-MnO nanorods and are evaluated as bifunctional electrocatalytic cathodes for Li–O 2 batteries (LOBs) to improve the bifunctionality, specific discharge capacity, and cyclability of α˗MnO 2 nanorod cathode-based LOBs.
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