Nitrogen-doped carbonaceous catalysts for gas-diffusion cathodes for alkaline aluminum-air batteries

La1−xAgxMnO3 electrocatalyst with high catalytic activity for oxygen reduction reaction in aluminium air batteries

“…The P max is higher than that of battery with polytetraphenylporphyrin iron(II) (40.5 mW cm À2 ), 62 N-doped porous carbon (150 mW cm À2 ), 63 and Ag-MnO 2 (204 mW cm À2 ) 64 as the cathode catalyst using high pure aluminium as the anode. It is close to that of the battery with Ag/N-RGO (268 mW cm À2 ) 65 and polyacrylonitrile-based catalysts (300 mW cm À2 ) 66 as the cathode catalyst using Al-Mg-Sn-Ga and Al-In alloy as the anode, respectively. This conrms that the proper doping of Ag in the LaMnO 3 perovskite is benecial to its ORR catalytic activity.…”

High‐Performance Oxygen Reduction Electrocatalyst Derived from Polydopamine and Cobalt Supported on Carbon Nanotubes for Metal–Air Batteries

“…They had an open circuit voltage of ≈1.8 V. From their i – V polarization curve, our Al–air batteries were capable of delivering exceptionally large current density, reaching 113 mA cm −2 at 1.4 V (Figure e). Their recorded peak power density exceeded 294 mW cm −2 , outperforming many previous reports on Al–air batteries (Table S3, Supporting Information) . It was worth noting that even higher power density was possible by draining a larger current density; however, we decided not to pursue this because batteries then started to become unstable due to the accelerated degradation of the Al anode.…”

CuO Nanoplatelets with Highly Dispersed Ce-Doping Derived from Intercalated Layered Double Hydroxides for Synergistically Enhanced Oxygen Reduction Reaction in Al–Air Batteries

“…There is an urgent need for the development of alternative energy sources arising from the continuous increase of energy demands and fossil fuel depletion. , Al–air batteries are one of the most attractive clean energy resources because of their abundant resources, low emissions, portability, high energy capacity (2980 Ah kg –1 ), low cost, and environmental compatibility. , Nevertheless, its performance is still limited by the sluggish oxygen reduction reaction on the cathode, which has hindered the commercial implementation of this promising technology. − Platinum-based materials with a four-electron process to produce hydroxide ions (OH – ) directly in alkaline solutions are well-known to be one of the most active catalysts for ORR; however, they suffer from the issues of high cost and inferior durability. , Alternatively, nonprecious metal catalysts have been demonstrated to be effective for ORR in either reducing the usage of Pt or replacing it. For example, transition metal chalcogenides, , oxides, , carbides, , and nitrides have shown reasonable ORR activity and practical durability.…”