Citation: Huimin Yang, Baiyan Zhang, Bin Zhang, Zhe Gao, Yong Qin. N-doped carbon modified Pt/CNTs synthesized by atomic layer deposition with enhanced activity and stability for methanol electrooxidation[J]. Chinese Journal of Catalysis, ;2018, 39(6): 1038-1043. doi: 10.1016/S1872-2067(18)63066-9 shu

N-doped carbon modified Pt/CNTs synthesized by atomic layer deposition with enhanced activity and stability for methanol electrooxidation

Huimin Yang ^a, ,
Baiyan Zhang ^a,b ,
Bin Zhang ^a ,
Zhe Gao ^a ,
Yong Qin ^a

a State Key Laboratory of Coal Coversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, Shanxi, China;
b University of Chinese Academy of Sciences, Beijing 100049, China

Received Date: 28 December 2017
Revised Date: 20 February 2018

Fund Project: This work was supported by the National Natural Science Foundation of China (21403272, 21673269) and the Natural Science Foundation of Shanxi Province (2015021046).

A Pt/CNTs catalyst coated with N-doped carbon (xNC-Pt/CNTs) is synthesized by atomic layer deposition (ALD) and applied in methanol electrooxidation reaction. Pt nanoparticles and polyimide (PI) are sequentially deposited on carbon nanotubes (CNTs) by ALD. After annealing at 600℃ in H₂ atmosphere, the PI is carbonized to produce porous N-doped carbon. Upon coating with a moderately thick layer of N-doped carbon, the optimized 50NC-Pt/CNTs show higher activity, better long-term stability, and improved CO resistance towards methanol electrooxidation compared with Pt/CNTs and commercial Pt/C (20 wt%). X-ray photoelectron spectroscopy characterization result indicates that the Pt-CO bond is weakened after N-doped carbon coating and CO adsorption on the Pt surface is weakened, leading to superior electrocatalytic performance.
- Atomic layer deposition,
- Methanol electrooxidation,
- Platinum,
- Nitrogen-doped carbon
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