Recent Progress in Diamond-based Electrocatalysts for Fuel Cells

Dong, Liang; Wang, Yanhui; Zang, Jianbing

doi:10.15541/jim20160483

Cited by 4 publications

(4 citation statements)

References 36 publications

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“…Polycrystalline boron-doped diamond (BDD) electrodes prepared by chemical vapor deposition (CVD) methods are well-documented as alternatives to conventional solid electrodes due to their exceptional chemical and dimensional stability in harsh conditions, their very low capacitance, and their very wide potential window for water splitting. − These properties have established polycrystalline BDD as the perfect option for applications in electroanalysis, − electrocatalysis, − and electrosynthesis. − …”

Section: Introductionmentioning

confidence: 99%

Influence of Surface Orientation on Electrochemical Properties of Boron-Doped Diamond

et al. 2019

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To study the influence of crystal orientation on the electrochemical properties of boron-doped diamond (BDD), electrodes comprising ( 100) and ( 111) homoepitaxial single-crystal layers of BDD were investigated and these were compared with a thin polycrystalline BDD electrode. The BDD samples with similar amounts of boron of around 10 20 cm −3 and resistivity of around 6 × 10 −3 Ω cm were prepared. Evaluation of the electrochemical reactivity of each of the samples with both H-and O-terminated surfaces showed that polycrystalline BDD was the most reactive, whereas the (111) samples proved to be more reactive than the (100) ones for single-crystal BDD. Moreover, considering the results of firstprinciples molecular dynamics simulations, it is proposed that surface transfer doping is the dominating factor for H-terminated surfaces, whereas the degree of band bending and the thickness of the space-charge layer are the dominating factors for O-terminated surfaces.

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Section: Introductionmentioning

confidence: 99%

Influence of Surface Orientation on Electrochemical Properties of Boron-Doped Diamond

et al. 2019

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“…In the text, electrode potentials are expressed in terms of this reference electrode. Surface area of the BDD@H electrode was equal to 0.502 cm 2 and BDD@D to 0.326 cm 2 .…”

Section: Methodsmentioning

confidence: 99%

“…To date, boron-doped diamond (BDD) interfaces are receiving continual scientific attention due to their outstanding properties, such as mechanical stability, and their electrical and optical properties. [1][2][3] Diamond films are grown mainly from a gas phase consisting of hydrogen, carbon, and a dopant source by microwave plasma-assisted chemical vapor deposition (MWPACVD) or hot filament chemical vapor (HFCVD) deposition. The gas composition during the growth has a significant influence on the surface morphology and the physicochemical properties of the BDD films.…”

Section: Introductionmentioning

confidence: 99%

Highly Occupied Surface States at Deuterium‐Grown Boron‐Doped Diamond Interfaces for Efficient Photoelectrochemistry

Sobaszek

Brzhezinskaya

Olejnik

et al. 2023

Small

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Polycrystalline boron‐doped diamond is a promising material for high‐power aqueous electrochemical applications in bioanalytics, catalysis, and energy storage. The chemical vapor deposition (CVD) process of diamond formation and doping is totally diversified by using high kinetic energies of deuterium substituting habitually applied hydrogen. The high concentration of deuterium in plasma induces atomic arrangements and steric hindrance during synthesis reactions, which in consequence leads to a preferential (111) texture and more effective boron incorporation into the lattice, reaching a one order of magnitude higher density of charge carriers. This provides the surface reconstruction impacting surficial populations of CC dimers, CH, CO groups, and COOH termination along with enhanced kinetics of their abstraction, as revealed by high‐resolution core‐level spectroscopies. A series of local densities of states were computed, showing a rich set of highly occupied and localized surface states for samples deposited in deuterium, negating the connotations of band bending. The introduction of enhanced incorporation of boron into (111) facet of diamond leads to the manifestation of surface electronic states below the Fermi level and above the bulk valence band edge. This unique electronic band structure affects the charge transfer kinetics, electron affinity, and diffusion field geometry critical for efficient electrolysis, electrocatalysis, and photoelectrochemistry.

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“…The fascinating properties of fullerenes have attracted the attention of researchers from around the world. Diamond [10], which is the oldest carbon material, has attracted scientists [11][12][13][14][15][16][17][18][19][20] from different fields because of its physical and chemical properties, such as hardness [21][22][23][24] and low dielectric constant [25][26][27][28][29][30]. Later, scientists from Japan [31] discovered a new one-dimensional carbon material, known as carbon nanotube, using the arc-discharge method.…”

Section: Introductionmentioning

confidence: 99%

Graphene quantum dots: preparations, properties, functionalizations and applications

Tian,

Tang,

Teng

et al. 2024

Mater. Futures

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Due to its zero-dimensional property, graphene quantum dots (GQDs) has quantum confinement effect on the internal charge, so they show many properties different from the parent two-dimensional graphene, such as strong fluorescence, non-zero band gap and easily soluble in solvents. As a member of the family of carbon materials, GQDs also has biocompatibility and low toxicity, which is one of the reasons why GQDs can be widely used in the biomedical field .The edge effect of GQDs is also particularly important. By modifying the edge of GQDs, the performance of GQDs can be regulated. A lot of preparation technology of GQDs, probably can be divided into three categories, and top-down, bottom-up and chemical method, chemical method is different from other literature classification, mainly considering the certain of the preparation of GQDs way, not directly to block materials or direct synthesis of small molecule materials for GQDs, but through intermediate in chemical means under the action of changes and form GQDs. The detailed introduction of the optical, electrical, thermal and magnetic properties of GQDs is the premise of the performance regulation of GQDs. In addition to inheriting the excellent properties of graphene, GQDs also expand the properties of the parent material. The functionalization of GQDs mainly includes the doping technology of introducing heteroatom and the composite technology of combining with other substances to improve the performance of other substances. The performance of these functionalized products is also discussed. The original and functionalized properties of GQDs are based on the application of GQDs. In recent years, GQDs has been used in many fields, including optics, electricity, optoelectronics, biomedicine, energy, agriculture and some emerging interdisciplinary fields. Through the introduction and discussion of the recent research achievements of GQDs, this review mainly highlights the huge potential value of GQDs and puts forward the direction of the development of GQDs in the future.

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Recent Progress in Diamond-based Electrocatalysts for Fuel Cells

Cited by 4 publications

References 36 publications

Influence of Surface Orientation on Electrochemical Properties of Boron-Doped Diamond

Influence of Surface Orientation on Electrochemical Properties of Boron-Doped Diamond

Highly Occupied Surface States at Deuterium‐Grown Boron‐Doped Diamond Interfaces for Efficient Photoelectrochemistry

Graphene quantum dots: preparations, properties, functionalizations and applications

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