Ultrathin‐Carbon‐Layer‐Protected PtCu Nanoparticles Encapsulated in Carbon Capsules: A Structure Engineering of the Anode Electrocatalyst for Direct Formic Acid Fuel Cells

机译：超薄 - 碳层保护的PTCU纳米粒子包封在碳胶囊中：用于直接甲酸燃料电池的阳极电催化剂的结构工程

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Abstract > Structure engineering is an effective strategy to enhance the performance of electrocatalysts for the formic acid oxidation reaction. However, it remains a challenge to prepare a highly active electrocatalyst based on a distinct understanding of its structure‐dependent performance. The design and synthesis of ultrathin‐carbon‐layer‐protected PtCu nanoparticles (NPs) encapsulated in a N‐doped carbon capsule (PtCu@NCC) is reported. This system is fabricated by using Zn‐based metal–organic frameworks as the carbon support source and metal‐containing tannic acid as the protecting shell template. It displays 9.8‐ and 9.6‐fold enhancements in mass activity and specific activity compared to commercial Pt/C. Moreover, a constructed direct formic acid fuel cell using PtCu@NCC as the anodic electrocatalyst delivers a maximum power density of 121 mW cm ?2 . Significantly, PtCu@NCC exhibits superior structural stability and catalytic durability in both half‐cell and full‐cell tests. A mechanism study reveals that the enhanced activity is partially attributed to facilitated electro‐oxidation kinetics of formic acid in the unique structure of PtCu@NCC, while the excellent durability stems from the “protecting effect” of the in‐situ‐formed ultrathin carbon layer on the surface of the PtCu NPs. This work opens a new avenue for the development of high‐performance electrocatalysts for fuel‐cell applications by offering essential insights into the structure–performance relationship of the materials. </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> > 结构工程是提高甲酸氧化反应的电催化剂的性能的有效策略。然而，基于对其结构相关性能的明显理解，制备高活性电催化剂仍然是一项挑战。报道了包封在N掺杂碳胶囊（PTCU @ NCC）中的超薄 - 碳层保护的PTCU纳米颗粒（NPS）的设计和合成。通过使用基于Zn的金属 - 有机框架作为碳支撑源和含金属鞣酸作为保护壳模板来制造该系统。与商业PT / C相比，它显示了大规模活动和特定活动的9.8-和9.6倍的增强。此外，作为阳极电催化剂的PTCU @ NCC构建的直接甲酸燃料电池可提供121mM厘米的最大功率密度？2 </ sup> 。值得注意的是，PTCU @ NCC在半细胞和全细胞测试中表现出优异的结构稳定性和催化耐久性。一种机制研究表明，增强的活性部分归因于PTCU @ NCC的独特结构中富含甲酸的甲酸电氧化动力学，而优异的耐久性源于原位形成的超薄碳层的“保护效应”在PTCU NPS的表面上。这项工作通过向材料结构性能关系提供必要的见解，开辟了开发用于燃料电池应用的高性能电催化剂的新途径。 </ 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-28901/'>《Particle & Particle Systems Characterization: Measurement and Description of Particle Properties and Behavior in Powders and Other Disperse Systems》</a> <b style="margin: 0 2px;">|</b><span>2019年第7期</span><b style="margin: 0 2px;">|</b><span>共10页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Xu Min&option=202" target="_blank" rel="nofollow">Xu Min;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Chen Hong&option=202" target="_blank" rel="nofollow">Chen Hong;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Zhao Yufei&option=202" target="_blank" rel="nofollow">Zhao Yufei;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Ni Wei&option=202" target="_blank" rel="nofollow">Ni Wei;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Liu Mingquan&option=202" target="_blank" rel="nofollow">Liu Mingquan;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Xue Yifei&option=202" target="_blank" rel="nofollow">Xue Yifei;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Huo Silu&option=202" target="_blank" rel="nofollow">Huo Silu;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Wu Linlin&option=202" target="_blank" rel="nofollow">Wu Linlin;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Yang Zhiyu&option=202" target="_blank" rel="nofollow">Yang Zhiyu;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Yan Yi‐Ming&option=202" target="_blank" rel="nofollow">Yan Yi‐Ming;</a> </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"> <p>School of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 100081 China;</p> <p>Beijing Aerospace Propulsion InstituteBeijing 100076 China;</p> <p>State Key Lab of Organic‐Inorganic CompositesBeijing University of Chemical TechnologyBeijing 100029 China;</p> <p>School of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 100081 China;</p> <p>School of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 100081 China;</p> <p>School of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 100081 China;</p> <p>School of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 100081 China;</p> <p>School of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 100081 China;</p> <p>State Key Lab of Organic‐Inorganic CompositesBeijing University of Chemical TechnologyBeijing 100029 China;</p> <p>State Key Lab of Organic‐Inorganic CompositesBeijing University of Chemical TechnologyBeijing 100029 China;</p> </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/6960.html" title="特种结构材料">特种结构材料;</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=formic acid oxidation reaction&option=203" rel="nofollow">formic acid oxidation reaction;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=fuel cells&option=203" rel="nofollow">fuel cells;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=metal–organic frameworks&option=203" rel="nofollow">metal–organic frameworks;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=PtCu nanoparticles&option=203" rel="nofollow">PtCu nanoparticles;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=ultrathin carbon layers&option=203" rel="nofollow">ultrathin carbon layers;</a> </p> <div class="translation"> 机译：甲酸氧化反应;燃料电池;金属 - 有机骨架;PTCU纳米粒子;超薄碳层; </div> </li> </ul> </div> </div> <div class="literature cardcommon"> <div class="similarity "> <h3 class="all_title" 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