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| Preparation and Catalytic Performance for Oxygen Reduction of Nitrogen Doped MnCo2O4/N-KB |
| Author Name | Affiliation | E-mail | | FENG Yan | School of Materials Science and Engineering, Central South University, Changsha 410083, China | | | WU Jian-Bo | School of Materials Science and Engineering, Central South University, Changsha 410083, China | | | ZHANG Xiao-Ling | School of Materials Science and Engineering, Central South University, Changsha 410083, China | | | PENG Chao-Qun | School of Materials Science and Engineering, Central South University, Changsha 410083, China | | | WANG Ri-Chu | School of Materials Science and Engineering, Central South University, Changsha 410083, China | wrc@csu.edu.cn |
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| Abstract: MnCo2O4/N-KB catalysts was prepared by hydrolysis-hydrothermal method, in which Mn(Ac)2 and Co(Ac)2 were used as precursors and nitrogen doped conductive carbon Ketjenblack (KB) was used as the carbon source. The microstructure of the MnCo2O4/N-KB catalysts and its catalytic performance for oxide reduction reaction were studied. The results showed that chemical coupling was formed between N-KB and MnCo2O4. It produced synergistic effect and effectively improved the oxygen reduction activity of MnCo2O4/N-KB catalyst. When the mass ratio of MnCo2O4 to N-KB was 1:9, the limiting current density of the reaction was 5.7 mA·cm-2 and the half wave potential was close to 0.81 V. MnCo2O4/N-KB catalyst obtained the best electrocatalytic performance for oxygen reduction. Comparing to the commercial Pt/C catatlyst with a current density of 5.2 mA·cm-2 and a half-wave potential 0.83 V, MnCo2O4/N-KB catalyst had a highly active oxygen reduction with higher ultimate current density and durability under the same capacity condition. |
| Keywords: oxygen reduction reaction manganese cobalt spinel hydrothermal synthesis electrochemistry |
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| FENG Yan,WU Jian-Bo,ZHANG Xiao-Ling,PENG Chao-Qun,WANG Ri-Chu.Preparation and Catalytic Performance for Oxygen Reduction of Nitrogen Doped MnCo2O4/N-KB[J].Chinese Journal of Inorganic Chemistry,2019,35(4):569-579. |
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