{"corpus_id":102501543,"paper_sha":"ceef1a6f21398d496d48f8c9d1c25aa0050d391a","doi":"10.1149/2.1141709JES","arxiv_id":null,"pmid":null,"pmcid":null,"mag_id":2736233298,"dblp_id":null,"acl_id":null,"title":"Oxygen Reduction Activity and Durability of Ordered and Disordered Pt3Co Alloy Nanoparticle Catalysts at Practical Temperatures of Polymer Electrolyte Fuel Cells","year":2017,"publication_date":null,"venue":"","journal":{"name":"Journal of The Electrochemical Society","pages":null,"volume":"164"},"journal_issn":null,"journal_title":null,"publication_types":[],"pubmed_pub_types":null,"s2_fields_of_study":["Materials Science","Chemistry","Engineering"],"reference_count":52,"citation_count":25,"influential_citation_count":1,"is_open_access":true,"arxiv_categories":null,"arxiv_license":null,"arxiv_journal_ref":null,"mesh_headings":null,"chemicals":null,"comments_corrections":null,"source_flags":1,"s2_open_access_pdf_url":"http://jes.ecsdl.org/content/164/9/F966.full.pdf","s2_open_access_landing_url":"https://www.semanticscholar.org/paper/ceef1a6f21398d496d48f8c9d1c25aa0050d391a","s2_open_access_license":"CCBYNCND","s2_open_access_status":"CLOSED","pmc_open_access_pdf_url":null,"pmc_open_access_landing_url":null,"pmc_open_access_license":null,"pmc_open_access_status":null,"unpaywall_open_access_pdf_url":null,"unpaywall_open_access_landing_url":null,"unpaywall_open_access_license":null,"unpaywall_open_access_status":null,"abstract":"We have succeeded in preparing ordered - and disordered -Pt 3 Co nanoparticles supported on carbon black (CB), with the nearly identicalparticlesizedistribution,bythenanocapsulemethodwithheat-treatmentathightemperatures.Thetemperaturedependencesoftheoxygenreductionreaction(ORR)activitiesattwokindsofPt 3 Co/CB catalysts were examined in O 2 -saturated 0.1 M HClO 4 solution by the multi-channel flow double electrode (M-CFDE) technique. For the ordered -Pt 3 Co/CB, the apparent rate constant k app (per unit active area) for the ORR increased with elevation of the temperature up to 65 ◦ C and stabilized at nearly the same value as that for commercial c-Pt/CB at 80 ◦ C, due to a severe dealloying of the Co component in the hot acid solution. In contrast, the k app values at the disordered -Pt 3 Co/CB were higher than those of the ordered -Pt 3 Co/CB over the whole temperature range from 30 ◦ C to 80 ◦ C. The disordered -Pt 3 Co/CB also exhibited higher stability than the ordered -Pt 3 Co/CB for both an accelerated durability test (ADT, by standard potential step cycles between 0.6 V and 1.0 V) in N 2 -purged 0.1 M HClO 4 solution at 65 ◦ C and a corrosion test in air-saturated 0.1 M HClO 4 solution at 65","claims":[{"public_id":"cl_b0d8c1fa3e91b277c6651ee4cccd4a48","status":"active","text":"Disordered Pt3Co/CB has higher stability than ordered Pt3Co/CB in both accelerated durability testing and a corrosion test at 65 °C.","confidence":0.96,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_b0d8c1fa3e91b277c6651ee4cccd4a48"},{"public_id":"cl_7ef7cd29709e69bbb4f4aa07bd4444eb","status":"active","text":"Disordered Pt3Co/CB shows higher oxygen reduction reaction activity than ordered Pt3Co/CB across 30 °C to 80 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