Unusual synergistic effects upon incorporation of Fe and/or Ni into mesoporous Co_3O_4 for enhanced oxygen evolution

摘要

Fe and Ni doped mesoporous Co_3O_4 (mCo_3O_4) catalysts were prepared and investigated for electrochemical oxygen evolution. The incorporation of Fe into mCo_3O_4 (Fe-mCo_3O_4) results in unusual synergistic effects via destruction of the bulk mesoporous structure and formation of slit-like pores. The Fe-mCo_3O_4 composite displayed a significantly enhanced catalytic activity for oxygen evolution.