An Isolated Zinc–Cobalt Atomic Pair for Highly Active and Durable Oxygen Reduction

Lu, Ziyang; Wang, Bo; Hu, Yongfeng; Liu, Wei; Zhao, Yufeng; Yang, Ruoou; Li, Zhiping; Luo, Jun; Chi, Bin; Jiang, Zheng; Li, Minsi; Mu, Shichun; Liao, Shijun; Zhang, Jiujun; Sun, Xueliang

doi:10.1002/ange.201810175

Cited by 141 publications

(113 citation statements)

References 48 publications

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“…However, researchers predict that the properties of SACs can be further promoted through the rational design of bimetallic dimers due to synergistic effects between different elements. For example, Zhao et al [225] recently developed a competitive complexation strategy to construct a novel electrocatalyst with Zn-Co atomic dimers coordinated on N-doped carbon support (Fig. 17) in which due to similar coordination abilities, a Zn-Co dimer structure can be synthesized after pyrolysis.…”

Section: Synthesis Methods Economically Scalable Synthesismentioning

confidence: 99%

Single-Atom Catalysts: From Design to Application

Cheng

Zhang

Doyle

et al. 2019

Electrochem. Energ. Rev.

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365

270

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Single-atom catalysis is a powerful and attractive technique with exceptional performance, drastic cost reduction and notable catalytic activity and selectivity. In single-atom catalysis, supported single-atom catalysts contain isolated individual atoms dispersed on, and/or coordinated with, surface atoms of appropriate supports, which not only maximize the atomic efficiency of metals, but also provide an alternative strategy to tune the activity and selectivity of catalytic reactions. This review will highlight the attributes of single-atom catalysis and summarize the most recent advancements in single-atom catalysts with a focus on the design of highly active and stable single atoms. In addition, new research directions and future trends will also be discussed.

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Section: Synthesis Methods Economically Scalable Synthesismentioning

confidence: 99%

Single-Atom Catalysts: From Design to Application

Cheng

Zhang

Doyle

et al. 2019

Electrochem. Energ. Rev.

Self Cite

365

270

View full text Add to dashboard Cite

show abstract

“…This method has been extended to synthesize FeNi dual‐metal sites . In addition, ZnCo dual‐metal sites with a similar structure have been synthesized through a low‐temperature pyrolysis, which leads to the incomplete volatilization of Zn atoms, followed by acid washing and a second thermal activation at 900 °C . It should be noted that pyrolysis of dual‐metal modified MOFs has also been used to synthesize electrocatalytically active alloys on carbonaceous supports, such as FeCo, FeMn, and FeNi alloy nanoparticles .…”

Section: Innovative Synthesis Of Sacs On Carbon Substratesmentioning

confidence: 99%

Engineering Local Coordination Environments of Atomically Dispersed and Heteroatom‐Coordinated Single Metal Site Electrocatalysts for Clean Energy‐Conversion

Zhu

Sokolowski

Song

et al. 2019

Advanced Energy Materials

269

240

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Carbon‐based heteroatom‐coordinated single‐atom catalysts (SACs) are promising candidates for energy‐related electrocatalysts because of their low‐cost, tunable catalytic activity/selectivity, and relatively homogeneous morphologies. Unique interactions between single metal sites and their surrounding coordination environments play a significant role in modulating the electronic structure of the metal centers, leading to unusual scaling relationships, new reaction mechanisms, and improved catalytic performance. This review summarizes recent advancements in engineering of the local coordination environment of SACs for improved electrocatalytic performance for several crucial energy‐convention electrochemical reactions: oxygen reduction reaction, hydrogen evolution reaction, oxygen evolution reaction, CO2 reduction reaction, and nitrogen reduction reaction. Various engineering strategies including heteroatom‐doping, changing the location of SACs on their support, introducing external ligands, and constructing dual metal sites are comprehensively discussed. The controllable synthetic methods and the activity enhancement mechanism of state‐of‐the‐art SACs are also highlighted. Recent achievements in the electronic modification of SACs will provide an understanding of the structure–activity relationship for the rational design of advanced electrocatalysts.

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“…When the catalyst was applied in the cathode of fuel cells, the kinetic current at 0.6 V reached 999 mA cm −2 and the peak power density was 705 mW cm −2 at 0.5 V. The origin of the outstanding ORR performance was clarified by DFT calculation results, which demonstrated that ZnCoN 6 is the main active site that boosted the cracking of O 2 . The *OH reduction on ZnCoN 6 site is a thermopositive process that can form a stable ZnCoN 6 ‐(OH) structure during the ORR process 130…”

Section: Orr Performance and Active Site Researchmentioning

confidence: 99%

Efficient Oxygen Reduction Catalysts of Porous Carbon Nanostructures Decorated with Transition Metal Species

Huang

Shen

Zhang

et al. 2019

Advanced Energy Materials

184

123

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Developing substitutes of noble metal catalysts toward oxygen reduction reaction (ORR) at the cathode is of vital importance for promoting low‐temperature polymer electrolyte membrane fuel cells. Transition metal species have been one of the hot areas of interest due to their low cost, high activity, and long‐term stability. The design of porous carbon nanostructures decorated with transition metal species plays a vital role in enhancing ORR catalytic performance. Here, the recent breakthroughs in porous carbon nanostructures decorated with transition metal species (including nanoparticles and atomically dispersed supported metal) are discussed. The porous nanostructures can provide large surface area as well as abundant pore channels, leading to sufficient exposure of active sites and efficient mass transfer. These nanostructures can be synthesized by several approaches, including the templated method, the self‐templated method, the impregnation process, and so on. Furthermore, the ORR performance and the exploration of active sites are also discussed for further enhancement of the ORR catalysts. Finally, the challenges and prospects are discussed, which would push forward the development of ORR catalysts in the near future.

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An Isolated Zinc–Cobalt Atomic Pair for Highly Active and Durable Oxygen Reduction

Cited by 141 publications

References 48 publications

Single-Atom Catalysts: From Design to Application

Single-Atom Catalysts: From Design to Application

Engineering Local Coordination Environments of Atomically Dispersed and Heteroatom‐Coordinated Single Metal Site Electrocatalysts for Clean Energy‐Conversion

Efficient Oxygen Reduction Catalysts of Porous Carbon Nanostructures Decorated with Transition Metal Species

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