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Advanced electrocatalysts with Dual-metal doped carbon Materials: Achievements and challenges
Chemical Engineering Journal ( IF 13.3 ) Pub Date : 2021-09-21 , DOI: 10.1016/j.cej.2021.132558 Jing Wang 1, 2 , Chunxiao Liu 2 , Shuang Li 2 , Yan Li 2 , Qingrui Zhang 1, 2 , Qiuming Peng 1 , John S. Tse 3 , Zhijian Wu 4
Chemical Engineering Journal ( IF 13.3 ) Pub Date : 2021-09-21 , DOI: 10.1016/j.cej.2021.132558 Jing Wang 1, 2 , Chunxiao Liu 2 , Shuang Li 2 , Yan Li 2 , Qingrui Zhang 1, 2 , Qiuming Peng 1 , John S. Tse 3 , Zhijian Wu 4
Affiliation
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Dual-metal site is more than simple double of the single atom, which has particular functionalities that help to promote electrocatalytic performance utilizing the synergistic effect. In the past few years, tremendous progress has been achieved in this field, although the research of dual-metal site is still in the developing stage. In this review, the preparation strategies and characterization techniques of dual-metal sites are summarized, which always develop hand-in-hand. Currently the main task is on the synthesis to achieve precise site-control. The reason is that the synergistic effect demands adjacent metal coupling, either in Homonuclear or heteronuclear form, yet different metal couples may exist with different local coordination configurations, , MN-MN or MN-MN, posing challenges in characterization. Theoretical modeling and simulation, which are indispensable tools to elucidate the nature of atomic level catalyst, are addressed here. These techniques are essential for screening potential candidates and rationalization of reaction mechanism. Here, we focus on the critical roles of charge difference, spin polarization and the promise to break scaling relationship via providing two reaction centers, which are unique traits for dual-atom sites. Finally, perspective on future challenges and opportunities are discussed.
中文翻译：
双金属掺杂碳材料的先进电催化剂：成就与挑战
双金属位点不仅仅是单原子的简单两倍，它具有特殊的功能，有助于利用协同效应提高电催化性能。在过去的几年里，尽管双金属位点的研究仍处于发展阶段，但该领域已经取得了巨大的进展。在这篇综述中，总结了双金属位点的制备策略和表征技术，它们始终齐头并进。目前的主要任务是进行合成以实现精确的位点控制。原因是协同效应需要相邻金属耦合，无论是同核还是异核形式，但不同的金属对可能存在不同的局部配位构型，即MN-MN或MN-MN，这给表征带来了挑战。这里讨论理论建模和模拟，它们是阐明原子级催化剂性质不可或缺的工具。这些技术对于筛选潜在候选者和合理化反应机制至关重要。在这里，我们重点关注电荷差异、自旋极化的关键作用，以及通过提供两个反应中心打破尺度关系的承诺，这是双原子位点的独特特征。最后，讨论了对未来挑战和机遇的看法。
更新日期：2021-09-21
中文翻译：
双金属掺杂碳材料的先进电催化剂：成就与挑战
双金属位点不仅仅是单原子的简单两倍，它具有特殊的功能，有助于利用协同效应提高电催化性能。在过去的几年里，尽管双金属位点的研究仍处于发展阶段，但该领域已经取得了巨大的进展。在这篇综述中，总结了双金属位点的制备策略和表征技术，它们始终齐头并进。目前的主要任务是进行合成以实现精确的位点控制。原因是协同效应需要相邻金属耦合，无论是同核还是异核形式，但不同的金属对可能存在不同的局部配位构型，即MN-MN或MN-MN，这给表征带来了挑战。这里讨论理论建模和模拟，它们是阐明原子级催化剂性质不可或缺的工具。这些技术对于筛选潜在候选者和合理化反应机制至关重要。在这里，我们重点关注电荷差异、自旋极化的关键作用，以及通过提供两个反应中心打破尺度关系的承诺，这是双原子位点的独特特征。最后，讨论了对未来挑战和机遇的看法。
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