Nitrogen‐doped Carbon Nanofibers for the Oxygen Reduction Reaction: Importance of the Iron Growth Catalyst Phase

摘要

Abstract > A systematic evaluation of the oxygen reduction reaction (ORR) on nitrogen‐doped carbon nanofibers (N‐CNFs) has been performed by tuning the properties of the N‐CNFs by using chemical vapor deposition. Analysis of the as‐synthesized N‐CNFs shows that the iron used as the growth catalyst consists of iron carbides, including Fe <sub>7</sub> C <sub>3</sub> , χ‐Fe <sub>5</sub> C <sub>2</sub> , and θ‐Fe <sub>3</sub> C, depending on the carbon activity of the synthesis feed. Furthermore, a relationship between the growth catalyst phase, the N‐CNF properties, and the electrocatalytic activity for the oxygen reduction in acidic electrolyte is revealed. The best catalytic activity and selectivity was achieved if the N‐CNFs were grown from H?gg carbide, χ‐Fe <sub>5</sub> C <sub>2</sub> , suggesting that this carbide phase favors the incorporation of active sites into the N‐CNFs. Controlling the phase of the iron particles used as growth catalysts is therefore essential for obtaining N‐CNFs with a high active site density for the oxygen reduction reaction. </abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译：</span><Abstract Type =“Main”XML：Lang =“en”> <标题类型=“main”>抽象</ title> > 通过使用化学气相沉积通过调节N-CNFS的性质来进行氮掺杂碳纳米纤维（N-CNFS）上的氧还原反应（ORR）的系统评价。 AS合成的N-CNF的分析表明，用作生长催化剂的铁由铁碳化物组成，包括Fe <sub> 7 </ sub> C <sub> 3 </ sub> ，χ-fe <sub> 5 </ sub> C <sub> 2 </ sub> 和θ-fe <sub> 3 </ sub> C，取决于合成饲料的碳活性。此外，揭示了生长催化剂相，N-CNF性能和用于氧化电解质中的氧还原的电催化活性之间的关系。如果从H 2 Gg碳化物，χ-Fe生长N-CNF，则实现了最佳的催化活性和选择性。 <sub> 5 </ sub> C <sub> 2 </ sub> ，表明这种碳化物相掺入了活性位点进入N-CNFS。因此，控制用作生长催化剂的铁颗粒的相对于获得具有高活性位点密度的N-CNF来进行氧还原反应必不可少。 </ p> </摘要> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" > 著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-16041/'>《ChemCatChem 》</a> <b style="margin: 0 2px;">|</b><span>2017年第9期</span><b style="margin: 0 2px;">|</b> <span>共12页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li> <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span> <a href="https://www.zhangqiaokeyan.com/clc/1186.html" title="物理化学（理论化学）、化学物理学">物理化学（理论化学）、化学物理学 ;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=carbon nanofibers&option=203" rel="nofollow">carbon nanofibers;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=chemical vapor deposition&option=203" rel="nofollow">chemical vapor deposition;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=nitrogen-doped carbon&option=203" rel="nofollow">nitrogen-doped carbon;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=oxygen reduction reaction&option=203" rel="nofollow">oxygen reduction reaction;</a> </p> <div class="translation"> 机译：碳纳米纤维;化学气相沉积;氮掺杂碳;氧还原反应; </div> </li> </ul> </div> </div> <div class="literature cardcommon"> <div class="similarity "> <h3 class="all_title" id="enpatent66">相似文献</h3> <div class="similaritytab clearfix"> <ul> <li class="active" >外文文献</li> <li >中文文献</li> <li >专利</li> </ul> </div> <div class="similarity_details"> <ul > <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/journal-foreign-detail/0704022057251.html">Nitrogen‐doped Carbon Nanofibers for the Oxygen Reduction Reaction: Importance of the Iron Growth Catalyst Phase</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor"> </a> <a href="/journal-foreign-16041/" target="_blank" rel="nofollow" class="tuijian_authcolor">ChemCatChem .</a> <span>2017</span> <span>,第9期</span> </span> </div> <p class="zwjiyix translation" 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href="/patent-detail/06120113289141.html">一种氮掺杂或铁氮共掺杂多级孔碳球的制备方法及其在电催化氧还原反应中的应用</a> <b>[P]</b> . <span> 中国专利： CN113321200A </span> <span> . 2021-08-31</span> </div> </li> <li> <div> <b>2. </b><a class="enjiyixqcontent" href="/patent-detail/06120109835767.html">一种氮掺杂碳纳米纤维负载金纳米颗粒氧还原催化剂的制备方法</a> <b>[P]</b> . <span> 中国专利： CN107331876A </span> <span> . 2017-11-07</span> </div> </li> <li> <div> <b>3. </b><a class="enjiyixqcontent" href="/patent-detail/06130403317948.html">CATALYST FOR OXYGEN REDUCTION REACTION COMPRISING POROUS CARBON NANOFIBER CO-DOPED WITH TRANSITION METAL AND NITROGEN AND PREPARATION METHOD THEREOF</a> <b>[P]</b> . <span> 外国专利：  KR20190022161A </span> <span> . 2019-03-06</span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：含过渡金属和氮共混的多孔碳纳米纤维的氧还原反应催化剂及其制备方法 </span> </p> </li> <li> <div> <b>4. </b><a class="enjiyixqcontent" href="/patent-detail/06130403176343.html">CATALYST FOR OXYGEN REDUCTION REACTION COMPRISING POROUS CARBON NANOFIBER CO-DOPED WITH TRANSITION METAL AND NITROGEN AND PREPARATION METHOD THEREOF</a> <b>[P]</b> . <span> 外国专利：  KR101969547B1 </span> <span> . 2019-04-16</span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：含过渡金属和氮共混的多孔碳纳米纤维的氧还原反应催化剂及其制备方法 </span> </p> </li> <li> <div> <b>5. </b><a class="enjiyixqcontent" href="/patent-detail/06130403341769.html">Preparing method of nitrogen-iron doped porous carbon nanoparticle catalyst for oxygen reduction reaction</a> <b>[P]</b> . <span> 外国专利：  KR101932612B1 </span> <span> . 2018-12-26</span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：氮铁掺杂的多孔碳纳米粒子用于氧还原反应的催化剂的制备方法 </span> </p> </li> </ul> 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