电催化剂
催化作用
电池(电)
碳纤维
钴
热解
化学工程
纳米颗粒
材料科学
贵金属
电子转移
析氧
无机化学
化学
纳米技术
电化学
电极
光化学
有机化学
复合材料
物理化学
复合数
功率(物理)
量子力学
工程类
物理
作者
Jiankang Sun,Zhengyun Wang,You Xu,Tiansui Zhang,Deyu Zhu,Guangfang Li,Hongfang Liu
出处
期刊:Chemsuschem
[Wiley]
日期:2023-02-03
卷期号:16 (7)
被引量:1
标识
DOI:10.1002/cssc.202201964
摘要
Biomass-derived carbon materials have received extensive attention for use in high-performance electrocatalysts. In this study, a highly efficient electrocatalyst is developed with Co nanoparticles anchored on N-doped porous carbon material (CoNC) by using yeast as a biomass precursor through a facial activation and pyrolysis process. CoNC exhibits comparable catalytic activity with commercial 20 % Pt/C for the oxygen reduction reaction (ORR) with a half-wave potential of 0.854 V. A home-made primary Zn-air battery exhibited an open circuit potential of 1.45 V and a peak power density of 188 mW cm-2 . Moreover, the discharge voltage of the primary battery maintained at a stable value up to 9 days. The enhanced performance of CoNC was probably ascribed to its high content of pyridinic-N and graphitic-N species, extra Co loading and porous structure, which provided sufficient active sites and channels to promote mass/electron transfer for ORR. This work provides a promising strategy to develop an efficient non-noble metal carbon-based electrocatalyst for fuel cells and metal-air batteries.
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