电催化剂
材料科学
碳纳米管
碳纤维
化学工程
铂金
氮气
催化作用
贵金属
析氧
复合数
氮化物
金属
纳米技术
电化学
无机化学
电极
复合材料
图层(电子)
冶金
化学
有机化学
物理化学
工程类
作者
Leiyu Feng,Tingting Wang,Han Sun,Jian Meng,Yinguang Chen
标识
DOI:10.1021/acsami.0c13656
摘要
Replacement of noble-metal-based electrocatalysts with inexpensive alternatives that have similar high performance will benefit the development of fuel cell technology. A metal-free composite of carbon nitride (CN) with nitrogen-doped carbon nanotubes (NCNTs) and its application as an electrocatalyst for the oxygen reduction reaction are reported for the first time in this study. The fabricated material (CN/NCNTs) formed a close interface between the two components and showed a comparable electrocatalytic activity in an alkaline medium to that of a conventional platinum-loaded carbon, superior tolerance to crossover effects, and excellent stability. The electrocatalytic efficiency of the CN/NCNT composite was nearly 100% of the four-electron (4 e–) pathway. The high performance of the current electrocatalyst was derived from its features, such as a relatively large surface area, high content of pyridinic nitrogen, and superior conductivity.
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