alpha-MnO2 nanorods supported on porous graphitic carbon nitride as efficient electrocatalysts for lithium-air batteries

作者：Hang, Yang; Zhang, Chaofeng; Luo, Xiaoman; Xie, Yingshen; Xin, Sen; Li, Yutao; Zhang, Dawei^*; Goodenough, John B.^*

来源：Journal of Power Sources, 2018, 392: 15-22.

DOI：10.1016/j.jpowsour.2018.04.078

• alpha-MnO2
• g-C3N4
• ORR
• OER
• Li-air batteries

Synthesis of alpha-MnO2 nanorods grown on porous graphitic carbon nitride (g-C3N4) sheets via a facile hydro thermal treatment gives a porous composite exhibiting higher activity for an air cathode than the individual component of alpha-MnO2 or porous g-C3N4 for both the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). The porous g-C3N4/alpha-MnO2 composite also exhibits better performance in a Li-air battery than pure alpha-MnO2 or XC-72 carbon catalysts, which includes superior discharge capacity, low voltage gap and high cycle stability. The alpha-MnO2 nanorods catalyze the OER and the porous g-C3N4 sheets catalyze the ORR.

• 出版日期2018-7-15
• 单位合肥工业大学