Synergistic effect of an atomically dual-metal doped catalyst for highly efficient oxygen evolution

Liu, Daobin; Ding, Shiqing; Wu, Chuanqiang; Gan, Wei; Wang, Changda; Cao, Dengfeng; Rehman, Zia Ur; Sang, Yuan; Chen, Shuangming; Zheng, Xusheng; Wang, Yu; Ge, Binghui; Li, Song

doi:10.1039/c8ta00550h

Cited by 120 publications

(82 citation statements)

References 44 publications

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“…Synergism of Dual Metal Sites : Using an identical synthetic strategy, atomically dispersed Ni and Fe SACs on g‐C 3 N 4 /CTNs were obtained that experimentally demonstrated a synergistic effect of Ni–Fe dual metal sites on g‐C 3 N 4 . The OER kinetics were further analyzed by examining Tafel plots.…”

Section: Atomically Dispersed Single Metal Site Electrocatalysis For mentioning

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

282

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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Section: Atomically Dispersed Single Metal Site Electrocatalysis For mentioning

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

282

240

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“…Zheng et al used carbon nanotube as conductive substrate to prepare atom Co embed g‐C 3 N 4 (Co‐C 3 N 4 /carbon nanotube (CNT)) through the pyrolysis of the mixture of CoCl 2 , dicyandiamide, and carbon nanotube at 600 °C . Based on the identical method, Liu et al further synthesized atomically dispersed Ni and Fe sites coexisting in g‐C 3 N 4 supported on carbon nanotube ( Figure a) . Jiao et al then extended the study to atom Cu doped g‐C 3 N 4 supported on conductive carbon black for electrochemical CO 2 RR .…”

Section: Synthesis Of Sacs In 2d Materialsmentioning

confidence: 99%

Section: Synthesis Of Sacs In 2d Materialsmentioning

confidence: 99%

“…After high temperature annealing at 900 °C, the carbonized sample showed an obvious decline in OER performance, indicating the important role of g‐C 3 N 4 in modulating the charge of Co atom for enhanced OER activity. In addition, the synergistic effect of atomically Ni, Fe dual‐metal sites on g‐C 3 N 4 (NiFe@g‐C 3 N 4 /CNT) had been explored by Liu et al As shown in Figure a,b, the NiFe@g‐C 3 N 4 /CN exhibited smaller overpotential and Tafel slop than the single Ni or Fe doped samples. The enlarged Ni L 3 edge XANES spectra in Figure c,d revealed two distinct peaks A 1 (853.2 eV) and A 2 (854.6 eV), corresponding to a low chemical state (Ni 2+ ) and a more oxidative state (Ni 3+ ), respectively.…”

Section: Electrocatalytic Performancementioning

confidence: 99%

Section: Electrocatalytic Performancementioning

confidence: 99%

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Modulating the Electronic Structure of Single‐Atom Catalysts on 2D Nanomaterials for Enhanced Electrocatalytic Performance

Zhu

Peng

et al. 2019

Small Methods

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Single‐atom catalysts (SACs) on 2D nanomaterials have great potential as efficient and low‐cost electrocatalysts for clean energy technologies. The coordination environments, as well as the physicochemical properties of the 2D supports, play key roles in tuning the catalytic activity and reaction mechanism of the single‐atom centers. This review first summarizes the suitable synthetic strategies of single‐atom on different 2D supports. The methods that facilitate the formation of relative homogeneous structure and enable the regulation of the surrounding atomic environment of metal center are discussed. Furthermore, the recent progress of SACs for energy‐related electrochemical applications is reviewed, including oxygen reduction reaction, hydrogen evolution reaction, oxygen evolution reaction, CO2 reduction reaction, and nitrogen reduction reaction. The strategies about modulation of the electronic structure of single‐atom for enhanced performance are highlighted, together with a discussion of the current issues and the prospects of this field.

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Simple and Scalable Mechanochemical Synthesis of Noble Metal Catalysts with Single Atoms toward Highly Efficient Hydrogen Evolution

Jin

Sultan

et al. 2020

Adv Funct Materials

177

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Designing a facile strategy to access active and atomically dispersed metallic catalysts are highly challenging for single atom catalysts (SACs). Herein, a simple and fast approach is demonstrated to construct Pt catalysts with single atoms in large quantity via ball milling Pt precursor and N‐doped carbon support (K2PtCl4@NC‐M; M denotes ball‐milling). The as‐prepared K2PtCl4@NC‐M only requires a low overpotential of 11 mV and exhibits 17‐fold enhanced mass activity for the electrochemical hydrogen evolution compared to commercial 20 wt% Pt/C. The superior hydrogen evolution reaction (HER) catalytic activity of K2PtCl4@NC‐M can be attributed to the generation of Pt single atoms, which improves the utilization efficiency of Pt atoms and the introduction of Pt‐N2C2 active sites with near‐zero hydrogen adsorption energy. This viable ball milling method is found to be universally applicable to the fabrication of other single metal atoms, for example, rhodium and ruthenium (such as Mt‐N2C2, where Mt denotes single metal atom). This strategy also provides a promising and practical avenue toward large‐scale energy storage and conversion application.

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Synergistic effect of an atomically dual-metal doped catalyst for highly efficient oxygen evolution

Abstract: Isolated dual transition metal atoms (Ni and Fe) were uniformly embedded into graphitic carbon nitrideviaa metal–Nxbond, resulting in highly efficient catalytic activity due to the electronic structure reconfiguration.

Cited by 120 publications

References 44 publications

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

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

Modulating the Electronic Structure of Single‐Atom Catalysts on 2D Nanomaterials for Enhanced Electrocatalytic Performance

Simple and Scalable Mechanochemical Synthesis of Noble Metal Catalysts with Single Atoms toward Highly Efficient Hydrogen Evolution

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