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Electrochemistry communications v.75, 2017년, pp.9 - 12   SCI SCIE
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Solvothermal co-gelation synthesis of N-doped three-dimensional open macro/mesoporous carbon as efficient electrocatalyst for oxygen reduction reaction

Hu, Wen (Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, Osaka 560-8531, Japan ); Yoshida, Nao (Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, Osaka 560-8531, Japan ); Hirota, Yuichiro (Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, Osaka 560-8531, Japan ); Tanaka, Shunsuke (Department of Chemical, Energy and Environmental Engineering, Faculty of Environmental and Urban Engineering, Kansai University, Osaka 564-8680, Japan ); Nishiyama, Norikazu (Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, Osaka 560-8531, Japan );
  • 초록  

    Abstract A facile solvothermal method is developed to synthesize N-doped 3D bicontinuous macro/mesoporous carbon through co-gelation of in-situ polymerized N-enriched resin together with in-situ formed colloidal silica packing domains. The resultant material possesses abundant pyridinic/graphitic N, respectable surface area, and smooth pore channels (interconnected macropores with open mesopores ca . 16nm). Due to the combined contributions of above features, it shows high oxygen reduction catalytic activity with excellent durability and tolerance to methanol crossover effect. Highlights N-doped 3D open macro/mesoporous carbon electrocatalyst for ORR is prepared. A novel solvothermal co-gelation synthetic strategy is developed. The N-doped carbon possesses favorable structure features for ORR catalysis. The ORR E onset is as high as 0.91V, and J @0.2V is comparable to Pt/C. This catalyst shows excellent stability and is free from fuel crossover poisoning. Graphical abstract [DISPLAY OMISSION]


  • 주제어

    Electrocatalyst .   Oxygen reduction reaction .   Open macro/mesoporous N-doped carbon .   Solvothermal co-gelation synthesis .   Stability.  

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