High-efficiency and low-cost electrocatalysts are generally believed to be the critical factor and have been highly researched to catalyze the oxygen reduction reaction (ORR) during the operation of Li–O2 battery (LOB). The catalysts with better ORR performance are essential for high-performance LOBs. Herein, a binder-free MnOx@carbon cloth cathode composed of Mn3O4 nanoparticles and Mn2O3 nanosheets were directly synthesized on the carbon cloth by electrodeposition and subsequently heat treatment at different temperature (from 200 °C to 400 °C). With the increase of temperature, the Mn3O4 nanospheres gradually transformed into Mn2O3 nanosheets. The MnOx obtained at 350 °C exhibited the best ORR performance. And MnOx-350 °C could operate more than 80 cycles at 340 mA g−1 with a limiting specific capacity of 1000 mAh g−1, and its first discharge specific capacity could nearly achieve 8000 mAh g−1 at 200 mA g−1.
Electro-Fenton (EF) technique has attracted great interests in the treatment of landfill leachate concentrate (LLC). Active carbon fiber (ACF) was modified with graphitic carbon nitride (g-C3N4), carbon nanotubes (CNTs) and...
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