Unknown

Dataset Information

0

Nickel supported on nitrogen-doped carbon nanotubes as hydrogen oxidation reaction catalyst in alkaline electrolyte.


ABSTRACT: The development of a low-cost, high-performance platinum-group-metal-free hydroxide exchange membrane fuel cell is hindered by the lack of a hydrogen oxidation reaction catalyst at the anode. Here we report that a composite catalyst, nickel nanoparticles supported on nitrogen-doped carbon nanotubes, has hydrogen oxidation activity similar to platinum-group metals in alkaline electrolyte. Although nitrogen-doped carbon nanotubes are a very poor hydrogen oxidation catalyst, as a support, it increases the catalytic performance of nickel nanoparticles by a factor of 33 (mass activity) or 21 (exchange current density) relative to unsupported nickel nanoparticles. Density functional theory calculations indicate that the nitrogen-doped support stabilizes the nanoparticle against reconstruction, while nitrogen located at the edge of the nanoparticle tunes local adsorption sites by affecting the d-orbitals of nickel. Owing to its high activity and low cost, our catalyst shows significant potential for use in low-cost, high-performance fuel cells.

SUBMITTER: Zhuang Z 

PROVIDER: S-EPMC4735558 | biostudies-literature | 2016 Jan

REPOSITORIES: biostudies-literature

altmetric image

Publications

Nickel supported on nitrogen-doped carbon nanotubes as hydrogen oxidation reaction catalyst in alkaline electrolyte.

Zhuang Zhongbin Z   Giles Stephen A SA   Zheng Jie J   Jenness Glen R GR   Caratzoulas Stavros S   Vlachos Dionisios G DG   Yan Yushan Y  

Nature communications 20160114


The development of a low-cost, high-performance platinum-group-metal-free hydroxide exchange membrane fuel cell is hindered by the lack of a hydrogen oxidation reaction catalyst at the anode. Here we report that a composite catalyst, nickel nanoparticles supported on nitrogen-doped carbon nanotubes, has hydrogen oxidation activity similar to platinum-group metals in alkaline electrolyte. Although nitrogen-doped carbon nanotubes are a very poor hydrogen oxidation catalyst, as a support, it increa  ...[more]

Similar Datasets

| S-EPMC9054606 | biostudies-literature
| S-EPMC4670999 | biostudies-literature
| S-EPMC8619281 | biostudies-literature
| S-EPMC8113563 | biostudies-literature
| S-EPMC8252760 | biostudies-literature
| S-EPMC6644947 | biostudies-literature
| S-EPMC9814408 | biostudies-literature
| S-EPMC7508880 | biostudies-literature
| S-EPMC6893947 | biostudies-literature
| S-EPMC8260271 | biostudies-literature