<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Ahed Abouserie</style></author><author><style face="normal" font="default" size="100%">Gumaa A. El-Nagar</style></author><author><style face="normal" font="default" size="100%">Benjamin Heyne</style></author><author><style face="normal" font="default" size="100%">Christina Günter</style></author><author><style face="normal" font="default" size="100%">Uwe Schilde</style></author><author><style face="normal" font="default" size="100%">Matthew T. Mayer</style></author><author><style face="normal" font="default" size="100%">Sasho Stojkovikj</style></author><author><style face="normal" font="default" size="100%">Christina Roth</style></author><author><style face="normal" font="default" size="100%">Andreas Taubert</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Facile Synthesis of Hierarchical CuS and CuCo&lt;sub&gt;2&lt;/sub&gt;S&lt;sub&gt;4&lt;/sub&gt;Structures from an Ionic Liquid Precursor for Electrocatalysis Applications</style></title><secondary-title><style face="normal" font="default" size="100%">ACS Applied Materials &amp; Interfaces</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2020</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://pubs.acs.org/doi/abs/10.1021/acsami.0c13927</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">12</style></volume><pages><style face="normal" font="default" size="100%">52560-52570</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;&lt;span&gt;Covellite-phase CuS and carrollite-phase CuCo&lt;/span&gt;&lt;span&gt;2&lt;/span&gt;&lt;span&gt;S&lt;/span&gt;&lt;span&gt;4&lt;/span&gt;&lt;span&gt;&amp;nbsp;nano- and microstructures were synthesized from tetrachloridometallate-based ionic liquid precursors using a novel, facile, and highly controllable hot-injection synthesis strategy. The synthesis parameters including reaction time and temperature were first optimized to produce CuS with a well-controlled and unique morphology, providing the best electrocatalytic activity toward the oxygen evolution reaction (OER). In an extension to this approach, the electrocatalytic activity was further improved by incorporating Co into the CuS synthesis method to yield CuCo&lt;/span&gt;&lt;span&gt;2&lt;/span&gt;&lt;span&gt;S&lt;/span&gt;&lt;span&gt;4&lt;/span&gt;&lt;span&gt;microflowers. Both routes provide high microflower yields of &amp;gt;80 wt %. The CuCo&lt;/span&gt;&lt;span&gt;2&lt;/span&gt;&lt;span&gt;S&lt;/span&gt;&lt;span&gt;4&lt;/span&gt;&lt;span&gt;&amp;nbsp;microflowers exhibit a superior performance for the OER in alkaline medium compared to CuS. This is demonstrated by a lower onset potential (∼1.45 V vs RHE @10 mA/cm&lt;/span&gt;&lt;span&gt;2&lt;/span&gt;&lt;span&gt;), better durability, and higher turnover frequencies compared to bare CuS flowers or commercial Pt/C and IrO&lt;/span&gt;&lt;span&gt;2&lt;/span&gt;&lt;span&gt;&amp;nbsp;electrodes. Likely, this effect is associated with the presence of Co&lt;/span&gt;&lt;span&gt;3+&lt;/span&gt;&lt;span&gt;&amp;nbsp;sites on which a better adsorption of reactive species formed during the OER (e.g., OH, O, OOH, etc.) can be achieved, thus reducing the OER charge-transfer resistance, as indicated by X-ray photoelectron spectroscopy and electrochemical impedance spectroscopy measurements.&lt;/span&gt;&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">47</style></issue></record></records></xml>