<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Muthusamy, Saravanakumar</style></author><author><style face="normal" font="default" size="100%">Sabbah, Amr</style></author><author><style face="normal" font="default" size="100%">Sabhapathy, Palani</style></author><author><style face="normal" font="default" size="100%">Chang, Yu-Chung</style></author><author><style face="normal" font="default" size="100%">Tadesse Billo</style></author><author><style face="normal" font="default" size="100%">Syum, Zeru</style></author><author><style face="normal" font="default" size="100%">Li-Chyong Chen</style></author><author><style face="normal" font="default" size="100%">Kuei-Hsien Chen</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Modification of Conductive Carbon with N-Coordinated Fe−Co Dual-Metal Sites for Oxygen Reduction Reaction</style></title><secondary-title><style face="normal" font="default" size="100%">ChemElectroChem</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">conductive carbon</style></keyword><keyword><style  face="normal" font="default" size="100%">dual metal-atom catalysts</style></keyword><keyword><style  face="normal" font="default" size="100%">Electrocatalysis</style></keyword><keyword><style  face="normal" font="default" size="100%">oxygen reduction</style></keyword><keyword><style  face="normal" font="default" size="100%">polyurea aerogels</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2023</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2023</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://doi.org/10.1002/celc.202300272</style></url></web-urls></urls><publisher><style face="normal" font="default" size="100%">John Wiley &amp; Sons, Ltd</style></publisher><volume><style face="normal" font="default" size="100%">n/a</style></volume><pages><style face="normal" font="default" size="100%">e202300272</style></pages><isbn><style face="normal" font="default" size="100%">2196-0216</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Abstract Earth-abundant commercial conductive carbon materials are ideal electrocatalyst supports but cannot be directly utilized for single-atom catalysts owing to the lack of anchoring sites. Therefore, we employed crosslink polymerization to modify the conductive carbon surface with Fe?Co dual-site electrocatalysts for oxygen reduction reaction (ORR). First, metal-coordinated polyurea (PU) aerogels were prepared using via crosslinked polymerization at ambient temperature. Then, carbon-supported, atomically dispersed Fe?Co dual-atom sites (FeCoNC/BP) were formed by high-temperatures pyrolysis with a nitrogen source. FTIR and 13C NMR measurements showed PU linkages, while 15N NMR revealed metal?nitrogen coordination in the PU gels. Asymmetric, N-coordinated, and isolated Fe?Co active structures were found after pyrolysis using XAS and STEM. In alkaline media, FeCoNC/BP exhibited excellent ORR activity, with a E1/2 of 0.93?V vs. RHE, higher than that of Pt/C (20?%) (0.90?V), FeNC/BP (0.88?V), and CoNC/BP (0.85?V). An accelerated durability test (ADT) on FeCoNC/BP indicated good durability over 35000 cycles. FeCoNC/BP also showed moderate ORR and ADT performance in acidic media. The macro/mesoporous N-doped carbon structures enhanced the mass transport properties of the dual Fe?Co active-sites. Therefore, modifying carbon supports with nonprecious metal catalysts may be a cost-effective-strategy for sustained electrochemical energy conversion.&lt;/p&gt;
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