过电位
纳米团簇
纳米材料基催化剂
双功能
硫黄
催化作用
碳纤维
析氧
热解
材料科学
电化学
化学工程
纳米材料
化学
纳米颗粒
无机化学
纳米技术
冶金
有机化学
复合数
电极
物理化学
复合材料
工程类
作者
Hongling Meng,Shi-Yi Lin,Jiu‐Ju Feng,Lu Zhang,Ai‐Jun Wang
标识
DOI:10.1016/j.jcis.2021.11.101
摘要
Design of advanced carbon nanomaterials with high-efficiency oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) activities is still imperative yet challenging for searching green and renewable energies. Herein, we synthesized ultrafine FeNi/(FeNi)9S8 nanoclusters encapsulated in nitrogen, sulfur-codoped graphitic carbon nanosheets (FeNi/(FeNi)9S8/N,S-CNS) by coordination regulated pyrolyzing the mixture of the metal precursors, dithizone and g-C3N4 at 800 °C. The as-prepared FeNi/(FeNi)9S8/N,S-CNS exhibited distinct electrocatalytic activity and stability for the ORR with positive onset (Eonset) and half-wave (E1/2) potentials (Eonset = 0.97 V; E1/2 = 0.86 V) and OER with the small overpotential (η = 283 mV) at 10 mA cm-2 in the alkaline media, outperforming commercial Pt/C and RuO2 catalysts. This research provides some constructive guidelines for preparing efficient, low-cost and stable nanocatalysts for electrochemical energy devices.
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