<?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%">Sabhapathy, Palani</style></author><author><style face="normal" font="default" size="100%">Raghunath, Puttikam</style></author><author><style face="normal" font="default" size="100%">Sabbah, Amr</style></author><author><style face="normal" font="default" size="100%">Indrajit Shown</style></author><author><style face="normal" font="default" size="100%">Bayikadi, Khasim Saheb</style></author><author><style face="normal" font="default" size="100%">Xie, Rui-Kun</style></author><author><style face="normal" font="default" size="100%">Krishnamoorthy, Vimal</style></author><author><style face="normal" font="default" size="100%">Lin, Ming-Chang</style></author><author><style face="normal" font="default" size="100%">Kuei-Hsien Chen</style></author><author><style face="normal" font="default" size="100%">Li-Chyong Chen</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Axial Chlorine Induced Electron Delocalization in Atomically Dispersed FeN4 Electrocatalyst for Oxygen Reduction Reaction with Improved Hydrogen Peroxide Tolerance</style></title><secondary-title><style face="normal" font="default" size="100%">Small</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Cl coordination</style></keyword><keyword><style  face="normal" font="default" size="100%">d-band center</style></keyword><keyword><style  face="normal" font="default" size="100%">electron density</style></keyword><keyword><style  face="normal" font="default" size="100%">FeN4</style></keyword><keyword><style  face="normal" font="default" size="100%">Fenton reaction</style></keyword><keyword><style  face="normal" font="default" size="100%">oxygen reduction reaction</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/smll.202303598</style></url></web-urls></urls><publisher><style face="normal" font="default" size="100%">John Wiley &amp; Sons, Ltd</style></publisher><pages><style face="normal" font="default" size="100%">2303598</style></pages><isbn><style face="normal" font="default" size="100%">1613-6810</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 Atomically dispersed iron sites on nitrogen-doped carbon (Fe-NC) are the most active Pt-group-metal-free catalysts for oxygen reduction reaction (ORR). However, due to oxidative corrosion and the Fenton reaction, Fe-NC catalysts are insufficiently active and stable. Herein, w e demonstrated that the axial Cl-modified Fe-NC (Cl-Fe-NC) electrocatalyst is active and stable for the ORR in acidic conditions with high H2O2 tolerance. The Cl-Fe-NC exhibits excellent ORR activity, with a high half-wave potential (E1/2) of 0.82 V versus a reversible hydrogen electrode (RHE), comparable to Pt/C (E1/2 = 0.85 V versus RHE) and better than Fe-NC (E1/2 = 0.79 V versus RHE). X-ray absorption spectroscopy analysis confirms that chlorine is axially integrated into the FeN4. More interestingly, compared to Fe-NC, the Fenton reaction is markedly suppressed in Cl-Fe-NC. In situ electrochemical impedance spectroscopy reveals that Cl-Fe-NC provides efficient electron transfer and faster reaction kinetics than Fe-NC. Density functional theory calculations reveal that incorporating Cl into FeN4 can drive the electron density delocalization of the FeN4 site, leading to a moderate adsorption free energy of OH* (?GOH*), d-band center, and a high onset potential, and promotes the direct four-electron-transfer ORR with weak H2O2 binding ability compared to Cl-free FeN4, indicating superior intrinsic ORR activity.&lt;/p&gt;
</style></abstract><notes><style face="normal" font="default" size="100%">&lt;p&gt;&lt;a href=&quot;https://doi.org/10.1002/smll.202303598&quot; rel=&quot;nofollow&quot;&gt;https://doi.org/10.1002/smll.202303598&lt;/a&gt;&lt;/p&gt;
</style></notes></record></records></xml>