<?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%">Indrajit Shown</style></author><author><style face="normal" font="default" size="100%">Sabbah, Amr</style></author><author><style face="normal" font="default" size="100%">Putikam Raghunath</style></author><author><style face="normal" font="default" size="100%">Chen, Jeng-Lung</style></author><author><style face="normal" font="default" size="100%">Wei-Fu Chen</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%">Electronic structure modulation of isolated Co-N4 electrocatalyst by sulfur for improved pH-universal hydrogen evolution reaction</style></title><secondary-title><style face="normal" font="default" size="100%">Nano Energy</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Atomic cobalt</style></keyword><keyword><style  face="normal" font="default" size="100%">ELECTRONIC STRUCTURE</style></keyword><keyword><style  face="normal" font="default" size="100%">graphene</style></keyword><keyword><style  face="normal" font="default" size="100%">Hydrogen evolution reaction (HER)</style></keyword><keyword><style  face="normal" font="default" size="100%">Nitrogen and sulfur co-doped</style></keyword><keyword><style  face="normal" font="default" size="100%">Nonprecious electrocatalyst</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2021</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2021</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.sciencedirect.com/science/article/pii/S2211285520311186</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">80</style></volume><pages><style face="normal" font="default" size="100%">105544</style></pages><isbn><style face="normal" font="default" size="100%">2211-2855</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Exploring an efficient platinum group metal (PGM) free electrocatalyst with superior activity and stability for hydrogen evolution reaction (HER) in a wide pH range is desirable for low-cost hydrogen production. Here, we report atomically dispersed cobalt on nitrogen and sulfur co-doped graphene (N-Co-S/G) for HER. Remarkably, the prepared N-Co-S/G electrocatalyst shows a small overpotential of 67.7 mV vs. reversible hydrogen electrode (RHE) at a current density of 10 mA cm−2 and exceptional durability over 100 h at 10 mA cm−2 under acidic conditions. Moreover, we found that the HER activity of N-Co-S/G is close to 20% Pt/C at all pH levels (0–14) and superior activity at high current density (&amp;gt;100 mA cm−2). Experimental and theoretical calculations reveal that the S atom in N-Co-S/G form Co-S bond, resulting new Co-N3S1 active site, which optimizes Gibbs free energy for hydrogen adsorption (∆GH*) close to zero, while water adsorption and dissociation enhanced by S modulation for neutral and basic media HER.&lt;/p&gt;
</style></abstract><notes><style face="normal" font="default" size="100%">&lt;p&gt;n/a&lt;/p&gt;
</style></notes></record></records></xml>