Transition‐Metal Single Atoms Anchored on Graphdiyne as High‐Efficiency Electrocatalysts for Water Splitting and Oxygen Reduction

He, Tianwei; Matta, Sri Kasi; Will, Geoffrey; Du, Aijun

doi:10.1002/smtd.201800419

Cited by 219 publications

(145 citation statements)

References 47 publications

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“…Therefore, the suitable ∆ G H* and higher total unoccupied density states of Pt 5d orbital in Pt‐GDY2 were in charge of the outstanding catalytic performance. In addition, GDY also was utilized as a suitable support for Sc/Ti single atoms [ 110 ] and transition‐metal single atoms, [ 111 ] which greatly enhanced the high distribution of single atoms, accelerated electron transfer and promoted electrical conductivity, thereby boosting electrochemical energy conversion efficiency.…”

Section: Gdy Supported Electrocatalysts For Energy Conversionmentioning

confidence: 99%

Graphdiyne: A Rising Star of Electrocatalyst Support for Energy Conversion

Lai

Zhang

et al. 2020

Advanced Energy Materials

118

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Graphdiyne (GDY), a rising star of 2D carbon allotropes with one‐atom‐thick planar layers, has achieved the coexistence of sp‐ and sp2‐hybridized carbon atoms in a 2D planar structure. In contrast to the prevailing carbon allotropes, GDY possesses Dirac cone structures, which endow it with unique chemical and physical properties, including an adjustable inherent bandgap, high‐speed charge carrier transfer efficiency, and excellent conductivity. Additionally, GDY also displays great potential in photocatalysis, rechargeable batteries, solar cells, detectors, and especially electrocatalysis. In this work, various GDY‐supported electrocatalysts are described and the reasons why GDY can act as a novel support are analyzed from the perspective of molecular structure, electronic properties, mechanical properties, and stability. The various electrochemical applications of GDY‐supported electrocatalysts in energy conversion such as hydrogen evolution reaction, oxygen evolution reaction, oxygen reduction reaction, overall water splitting, and nitrogen reduction reaction are reviewed. The challenges facing GDY and GDY‐based materials in future research are also outlined. This review aims at providing an in‐depth understanding of GDY and promoting the development and application of this novel carbon material.

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Section: Gdy Supported Electrocatalysts For Energy Conversionmentioning

confidence: 99%

Graphdiyne: A Rising Star of Electrocatalyst Support for Energy Conversion

Lai

Zhang

et al. 2020

Advanced Energy Materials

118

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“…As a semiconductor material [120,121], GDY has a natural and direct band gap of 0.52 eV (Figure 12a) [28,122]. This band gap can be reduced to 0.26 eV (Figure 12b) by the anchoring of Ni atoms on the surface of GDY [123], which effectively improves the conductivity and further accelerates the electrocatalytic reaction. The three possible adsorption sites of TM atoms (Sc to Zn and Pt) anchored on the surface of GDY were simulated [123], namely S1, S2 and S3 (Figure 12c).…”

Section: Metal-atom-anchored Gdy Electrocatalystsmentioning

confidence: 99%

Atomic-Level Functionalized Graphdiyne for Electrocatalysis Applications

et al. 2020

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Graphdiyne (GDY) is a two-dimensional (2D) electron-rich full-carbon planar material composed of sp2- and sp-hybridized carbon atoms, which features highly conjugated structures, uniformly distributed pores, tunable electronic characteristics and high specific surface areas. The synthesis strategy of GDY by facile coupling reactions under mild conditions provides more convenience for the functional modification of GDY and offers opportunities for realizing the special preparation of GDY according to the desired structure and unique properties. These structural characteristics and excellent physical and chemical properties of GDY have attracted increasing attention in the field of electrocatalysis. Herein, the research progress in the synthesis of atomic-level functionalized GDYs and their electrocatalytic applications are summarized. Special attention was paid to the research progress of metal-atom-anchored and nonmetallic-atom-doped GDYs for applications in the oxygen reduction reaction (ORR), the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER) catalytic processes. In addition, several potential development prospects and challenges of these 2D highly conjugated electron-rich full-carbon materials in the field of electrocatalysis are presented.

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“…However, due to the extremely high surface energy during the synthesis process, the metal single atom are easily aggregated into clusters and cannot be dispersed at the atomic level on the supports. [8][9][10][11][12][13][14] Researchers used density functional theory (DFT) theoretical calculation technology to deeply analyze of the distance, bond energy, bond length, electron transfer number, and the actual conditions of the reaction of metal single atoms and support. Metal single atoms are easy to anchor through major forms as follows: i) simple surface adsorption; ii) carrier vacancies; iii) substitution of carrier atoms for insertion into the backbone of carrier.…”

Section: Introductionmentioning

confidence: 99%

Nitrogen‐Doped Porous Carbon Supported Nonprecious Metal Single‐Atom Electrocatalysts: from Synthesis to Application

et al. 2019

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Nonprecious metal single‐atom materials have attracted extensive attention in the field of electrocatalysis due to their low cost, high reactivity, high selectivity, and high atomic utilization. However, the high surface energy of a single atom causes agglomeration during preparation and catalytic measurement, resulting in damage to the catalytic sites. The strong interaction between substrate and monoatoms is the key factor to prevent the aggregation of individual metal atoms, and the geometry and electronic structure of the catalysts can be adjusted to optimize the catalytic activity. Due to the hierarchically pores, high specific surface area, and defect effect, nitrogen‐doped porous carbon (NPC) has been widely studied as an ideal nonprecious metal single‐atom support, which synergistically enhance the electrocatalytic performance toward oxygen reduction reaction, oxygen evolution reaction, hydrogen evolution reaction, carbon dioxide reduction reaction, and nitrogen reduction reaction with non‐noble metal single atoms. This review summarizes the controllable synthesis, characterization, theoretical calculation, and application of M (M = Co, Fe, Ni, Cu, Zn, Mo, etc.) single atoms on nitrogen‐doped porous carbon. Finally, the future development and challenges of nitrogen‐doped porous carbon supported nonprecious metal single‐atom electrocatalysts for practical commercialization are concluded.

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Transition‐Metal Single Atoms Anchored on Graphdiyne as High‐Efficiency Electrocatalysts for Water Splitting and Oxygen Reduction

Cited by 219 publications

References 47 publications

Graphdiyne: A Rising Star of Electrocatalyst Support for Energy Conversion

Graphdiyne: A Rising Star of Electrocatalyst Support for Energy Conversion

Atomic-Level Functionalized Graphdiyne for Electrocatalysis Applications

Nitrogen‐Doped Porous Carbon Supported Nonprecious Metal Single‐Atom Electrocatalysts: from Synthesis to Application

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