{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Zhang W"],"funding":["National Natural Science Foundation of China"],"pagination":["261"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC7909561"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["11(2)"],"pubmed_abstract":["The oxygen reduction reaction (ORR) is a crucial step in fuel cells and metal-air batteries. It is necessary to expand the range of efficient non-precious ORR electrocatalysts on account of the low abundance and high cost of Pt/C catalysts. Herein, we synthesized crystalline cobalt-embedded N-doped carbon nanotubes (Co@CNTs-T) via facile carbonization of Co/Zn metal-organic frameworks (MOFs) with dicyandiamide at different temperatures (t = 600, 700, 800, 900 °C). Co@CNTs- 800 possessed excellent ORR activities in alkaline electrolytes with a half wave potential of 0.846 V vs. RHE (Reversible Hydrogen Electrode), which was comparable to Pt/C. This three-dimensional network, formed by Co@CNTs-T, facilitated electron migration and ion diffusion during the ORR process. The carbon shell surrounding the Co nanoparticles resulted in Co@CNTs-800 being stable as an electrocatalyst. This work provides a new strategy to design efficient and low-cost oxygen catalysts."],"journal":["Nanomaterials (Basel, Switzerland)"],"pubmed_title":["Co-Zn-MOFs Derived N-Doped Carbon Nanotubes with Crystalline Co Nanoparticles Embedded as Effective Oxygen Electrocatalysts."],"pmcid":["PMC7909561"],"funding_grant_id":["21603194 and 22001240"],"pubmed_authors":["Zhang W","Liu X","Gao M","Shang H"],"additional_accession":[]},"is_claimable":false,"name":"Co-Zn-MOFs Derived N-Doped Carbon Nanotubes with Crystalline Co Nanoparticles Embedded as Effective Oxygen Electrocatalysts.","description":"The oxygen reduction reaction (ORR) is a crucial step in fuel cells and metal-air batteries. It is necessary to expand the range of efficient non-precious ORR electrocatalysts on account of the low abundance and high cost of Pt/C catalysts. Herein, we synthesized crystalline cobalt-embedded N-doped carbon nanotubes (Co@CNTs-T) via facile carbonization of Co/Zn metal-organic frameworks (MOFs) with dicyandiamide at different temperatures (t = 600, 700, 800, 900 °C). Co@CNTs- 800 possessed excellent ORR activities in alkaline electrolytes with a half wave potential of 0.846 V vs. RHE (Reversible Hydrogen Electrode), which was comparable to Pt/C. This three-dimensional network, formed by Co@CNTs-T, facilitated electron migration and ion diffusion during the ORR process. The carbon shell surrounding the Co nanoparticles resulted in Co@CNTs-800 being stable as an electrocatalyst. This work provides a new strategy to design efficient and low-cost oxygen catalysts.","dates":{"release":"2021-01-01T00:00:00Z","publication":"2021 Jan","modification":"2024-11-08T12:07:40.547Z","creation":"2021-03-02T08:10:57Z"},"accession":"S-EPMC7909561","cross_references":{"pubmed":["33498472"],"doi":["10.3390/nano11020261"]}}