Volume 8 Issue 2
Apr.  2023
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Article Navigation >  Green Energy&Environment  > 2023  >  8(2): 559-566
Jing Li, Zhu Guo, Wenjie Zhang, Jing Guo, Konggang Qu, Weiwei Cai. Stable NiPt-Mo2C active site pairs enable boosted water splitting and direct methanol fuel cell. Green Energy&Environment, 2023, 8(2): 559-566. doi: 10.1016/j.gee.2021.08.005
Citation: Jing Li, Zhu Guo, Wenjie Zhang, Jing Guo, Konggang Qu, Weiwei Cai. Stable NiPt-Mo2C active site pairs enable boosted water splitting and direct methanol fuel cell. Green Energy&Environment, 2023, 8(2): 559-566. doi: 10.1016/j.gee.2021.08.005
shu

Stable NiPt-Mo2C active site pairs enable boosted water splitting and direct methanol fuel cell

doi: 10.1016/j.gee.2021.08.005

  • a. Sustainable Energy Laboratory, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, China;

  • b. Shandong Provincial Key Laboratory/Collaborative Innovation Center of Chemical Energy Storage & Novel Cell Technology, Liaocheng University, Liaocheng, 252059, China

Funds:

We are grateful for financial support from the National Natural Science Foundation of China (Nos. 21875224 and 22179121) and the Fundamental Research Founds for National University, China University of Geosciences (Wuhan).

  • Received date 08 July 2021, Accepted date 28 August 2021, RevRecd date 13 August 2021, Publish date 02 September 2021,
    Abstract
  • Sluggish kinetics of methanol oxidation reaction (MOR) and alkaline hydrogen evolution reaction (HER) even on precious Pt catalyst impede the large-scale commercialization of direct methanol fuel cell (DMFC) and water electrolysis technologies. Since both of MOR and alkaline HER are related to water dissociation reaction (WDR), it is reasonable to invite secondary active sites toward WDR to pair with Pt for boosted MOR and alkaline HER activity on Pt. Mo2C and Ni species are therefore employed to engineer NiPt–Mo2C active site pairs, which can be encapsulated in carbon cages, via an in-situ self-confinement strategy. Mass activity of Pt in NiPt–Mo2C@C toward HER is boosted to 11.3 A mgpt-1, 33 times higher than that of Pt/C. Similarly, MOR catalytic activity of Pt in NiPt–Mo2C@C is also improved by 10.5 times and the DMFC maximum power density is hence improved by 9-fold. By considering the great stability, NiPt–Mo2C@C exhibits great practical application potential in DMFCs and water electrolysers.

     

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