Graphitic carbon nitride-carbon nanofiber (g-CN-CNF) was synthesized as a bifunctional catalyst in an anion-exchange membrane water electrolyzer (AEMWE), and primary and rechargeable Zn–air cells. The g-CN-CNF catalyst shows high catalytic activity for oxygen reduction reaction and oxygen evolution reaction in half-cell, with low overpotentials and low Tafel slopes. The high activity is attributed to the synergistic effect of abundant active sites and the electrical conductivity following the pyrolysis of g-CN and CNF. As a result, AEMWE with the g-CN-CNF anode, the first application of a carbon-based catalyst, exhibits outstanding performance that is the highest record in the literature for AEMWE using a non-noble metal catalyst. In addition, the performance and durability of Zn-air cells with g-CN-CNF cathode outperform those fabricated with commercial platinum.

石墨化的氮化碳-碳纳米纤维（g-CN-CNF）是在阴离子交换膜水电解槽（AEMWE）以及主要的可充电锌-空气电池中作为双功能催化剂合成的。g-CN-CNF催化剂对半电池中的氧还原反应和析氧反应具有很高的催化活性，具有低的超电势和低的Tafel斜率。高活性归因于丰富的活性位点和g-CN和CNF热解后的电导率的协同效应。结果，具有g-CN-CNF阳极的AEMWE（碳基催化剂的首次应用）显示出出色的性能，这是使用非贵金属催化剂的AEMWE文献中最高的记录。此外，