Nitrogen-rich Graphdiyne Film for Efficiently Suppressing the Methanol Crossover in Direct Methanol Fuel Cells

被引:0
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作者
Liang Li
Zicheng Zuo
Feng He
Zhongqing Jiang
Yuliang Li
机构
[1] Chinese Academy of Sciences,Beijing National Laboratory for Molecular Sciences(BNLMS), CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry
[2] University of Chinese Academy of Sciences,Key Laboratory of Optical Field Manipulation of Zhejiang Province, Department of Physics
[3] Zhejiang Sci-Tech University,undefined
来源
Chemical Research in Chinese Universities | 2021年 / 37卷
关键词
Direct methanol fuel cell(DMFC); Methanol crossover; Nafion membrane; Graphdiyne;
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学科分类号
摘要
The inhibition of the methanol crossover is one of the intractable challenges in the direct methanol fuel cell. The graphdiyne(GDY) with atomic-level pores shows great potential in realizing the zero-permeation of methanol molecules. In this paper, an ultrathin layer of nitrogen-rich GDY film with a high nitrogen content is largely prepared and readily used for retarding the methanol permeation in the state-of-the-art commercial Nafion membrane. The high N-content in this porous GDY nanofilm remarkably increases the selective suppression in methanol transfer, and single-layer GDY film can efficiently prevent 43% methanol crossover and the value of the double-layer GDY film can be high up to 69%. The power performance and the long-term stability of the cell are obviously improved due to the reduced methanol crossover.
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页码:1275 / 1282
页数:7
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