Cobalt-exchanged Poly(heptazine imides) as transition metal-Nx electrocatalysts for the oxygen evolution reaction
Researchers from four institutions in UniSysCat have developed a noble-metal free electrocatalyst for the oxygen evolution reaction (OER).
The material is a poly(heptazine imide), an organic framework with anionic moieties in the backbone, in which Co-ions can be introduced in well-controllable amounts. Such cobalt poly(heptazine imides) can be produced by simple heating of an organic precursor in a mixed salt melt containg a cobalt salt, thus by a facile, cheap and scalable approach.
Due to the enhanced conductivity and abundant, well-distributed Co-Nx catalytic active sites, this cobalt poly(heptazine imides) exhibits an excellent OER activity and stability.
This work provides a novel approach for the development of high performance electrocatalysts with adjustable and highly-dispersed metal-Nx sites by applying poly(heptazine imides) as the support material.
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