Recent Advances in Electrocatalysts for Alkaline Hydrogen Oxidation Reaction

Zhao, Ruopeng; Yue, Xin; Li, Qinghua; Fu, Gengtao; Lee, Jongmin; Huang, Shaoming

doi:10.1002/smll.202100391

Cited by 70 publications

(62 citation statements)

References 171 publications

(248 reference statements)

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“…7 In the HSAB theory, the Fe 3+ center is a hard acid that has weak bonding with Lewis so base (nearly neutral OH ad ). 40,41 The unbalanced binding energy may drive OH ad towards the Ni 3+ center to deliver further oxidation. It is known that Ni favors the adsorption of OH ad species.…”

Section: Chemical Probe Studies In Situ Raman Studies and Dft Calcula...mentioning

confidence: 99%

In situ Raman spectroscopy reveals the structure evolution and lattice oxygen reaction pathway induced by the crystalline–amorphous heterojunction for water oxidation

Dong

Qian

et al. 2022

Chem. Sci.

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Section: Chemical Probe Studies In Situ Raman Studies and Dft Calcula...mentioning

confidence: 99%

In situ Raman spectroscopy reveals the structure evolution and lattice oxygen reaction pathway induced by the crystalline–amorphous heterojunction for water oxidation

Dong

Qian

et al. 2022

Chem. Sci.

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“…Especially, customizing electronic bandgaps in coupled heterostructures would allow control of the interfacial interaction for specific applications. [ 9–20 ]…”

Section: Introductionmentioning

confidence: 99%

“…Especially, customizing electronic bandgaps in coupled heterostruc tures would allow control of the interfacial interaction for specific applications. [9][10][11][12][13][14][15][16][17][18][19][20] In terms of constructing a 2D hetero geneous structure, selecting a 2D platform is important, which is expected to possess excellent mechanical strength and elec trical conductivity. MXene, an emerging type of 2D materials, has been manufac tured by selectively etching A elements (group III A or IV A) of MAX phases.…”

Section: Introductionmentioning

confidence: 99%

Coupling of N‐Doped Mesoporous Carbon and N‐Ti₃C₂ in 2D Sandwiched Heterostructure for Enhanced Oxygen Electroreduction

Gou

Qu²,

Liu

et al. 2022

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Abstract2D heterostructures provide a competitive platform to tailor electrical property through control of layer structure and constituents. However, despite the diverse integration of 2D materials and their application flexibility, tailoring synergistic interlayer interactions between 2D materials that form electronically coupled heterostructures remains a grand challenge. Here, the rational design and optimized synthesis of electronically coupled N‐doped mesoporous defective carbon and nitrogen modified titanium carbide (Ti3C2) in a 2D sandwiched heterostructure, is reported. First, a F127‐polydopamine single‐micelle‐directed interfacial assembly strategy guarantees the construction of two surrounding mesoporous N‐doped carbon monolayers assembled on both sides of Ti3C2 nanosheets. Second, the followed ammonia post‐treatment successfully introduces N elements into Ti3C2 structure and more defective sites in N‐doped mesoporous carbon. Finally, the oxygen reduction reaction (ORR) and theoretical calculation prove the synergistic coupled electronic effect between N‐Ti3C2 and defective N‐doped carbon active sites in the 2D sandwiched heterostructure. Compared with the control 2D samples (0.87–0.88 V, 4.90–5.15 mA cm−2), the coupled 2D heterostructure possesses the best onset potential of 0.90 V and limited density current of 5.50 mA cm−2. Meanwhile, this catalyst exhibits superior methanol tolerance and cyclic durability. This design philosophy opens up a new thought for tailoring synergistic interlayer interactions between 2D materials.

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“…Therefore, environmentally friendly and energy-efficient fuels are desired. The fuel cell is currently one of the viable green energy technologies ( Lu and Zhuang, 2016 ; Ohyama et al, 2016 ; Cong et al, 2018 ; Zhao et al, 2021 ). The anodic electrode catalysts used in fuel cells are still limited to Pt-based alloy electrode catalyst.…”

Section: Introductionmentioning

confidence: 99%

Nano-Sized PtRu/C Electrocatalyst With Separated Phases and High Dispersion Improves Electrochemical Performance of Hydrogen Oxidation Reaction

et al. 2022

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Alloys and core-shell nanoparticles have recently received enormous attention which opened up new avenues for highly active catalysts. Despite considerable advances in this field, the majority of proposed approaches suffer from either complicated procedures or unstable structures, severely hindering their practical applications. Here, we successfully synthesized alloy electrocatalyst with separated phases, PtRu alloy nanoparticles robustly supported by carbon matrix (PtRu/C), using a convenient two-step solvothermal method. The constructed PtRu/C at different NaOH contents (0–1.25 mmol) were compared and electrochemical activity were evaluated by the hydrogen oxidation reaction (HOR). In contrast, the homogeneous distribution and minimum average size of Ru and Pt nanoparticles on carbon, appeared at approximately 4 nm, proving that PtRu/C-0.75 possessed abundant accessible active sites. The catalytic activities and the reaction mechanism were studied via electrochemical techniques. PtRu/C-0.75 has excellent activity due to its unique electronic structure and efficient charge transfer, with the largest j0 value of 3.68 mA cm−2 in the HOR.

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Recent Advances in Electrocatalysts for Alkaline Hydrogen Oxidation Reaction

Abstract: Scheme 2. Overview of the topics covered in this review.Scheme 1. The basic structure of AEMFCs.

Cited by 70 publications

References 171 publications

In situ Raman spectroscopy reveals the structure evolution and lattice oxygen reaction pathway induced by the crystalline–amorphous heterojunction for water oxidation

In situ Raman spectroscopy reveals the structure evolution and lattice oxygen reaction pathway induced by the crystalline–amorphous heterojunction for water oxidation

Coupling of N‐Doped Mesoporous Carbon and N‐Ti₃C₂ in 2D Sandwiched Heterostructure for Enhanced Oxygen Electroreduction

Nano-Sized PtRu/C Electrocatalyst With Separated Phases and High Dispersion Improves Electrochemical Performance of Hydrogen Oxidation Reaction

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Recent Advances in Electrocatalysts for Alkaline Hydrogen Oxidation Reaction

Abstract: Scheme 2. Overview of the topics covered in this review.Scheme 1. The basic structure of AEMFCs.

Cited by 70 publications

References 171 publications

In situ Raman spectroscopy reveals the structure evolution and lattice oxygen reaction pathway induced by the crystalline–amorphous heterojunction for water oxidation

In situ Raman spectroscopy reveals the structure evolution and lattice oxygen reaction pathway induced by the crystalline–amorphous heterojunction for water oxidation

Coupling of N‐Doped Mesoporous Carbon and N‐Ti3C2 in 2D Sandwiched Heterostructure for Enhanced Oxygen Electroreduction

Nano-Sized PtRu/C Electrocatalyst With Separated Phases and High Dispersion Improves Electrochemical Performance of Hydrogen Oxidation Reaction

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Resources

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Coupling of N‐Doped Mesoporous Carbon and N‐Ti₃C₂ in 2D Sandwiched Heterostructure for Enhanced Oxygen Electroreduction