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- W2385232342 abstract "In order to improve the electrocatalytic properties of MnO2 for oxygen reduction reaction,the catalysts were prepared through calcining the carbon powder impregnated with Mn(NO3)2,La(NO3)3· 6H2O and Co(NO3)2· 6H2O at 340 ℃ for 2 h,then the air electrodes were obtained by cold-pressing.The electrochemical properties of the air electrodes for oxygen reduction reaction(ORR) were investigated by using cathodic polarization method,galvanostatic discharge method and AC impedance spectroscopy.The results showed that the air electrode was the best catalytic activity when the stoichiometric ratio of Mn ∶ La ∶ Co was 1 ∶ 0.4 ∶ 0.6.The result of galvanostatic discharge method indicated that the discharge plateau of the electrode was much higher than the electrode of MnO2 at current densities of 100,200 mA/cm2.Furthermore,the composite catalyst could boost the stability of the electrode for ORR at large current density.The doping of La and Co could decrease the charge-transfer resistance and oxygen diffusion resistance.The discharge results showed that the lanthanum oxide and cobalt oxide could significantly enhance the Al-air battery's operating voltage." @default.
- W2385232342 created "2016-06-24" @default.
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- W2385232342 date "2013-01-01" @default.
- W2385232342 modified "2023-09-24" @default.
- W2385232342 title "Doping modification of carbon based manganese oxide catalyst" @default.
- W2385232342 hasPublicationYear "2013" @default.
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