Uniformly bimetal-decorated holey carbon nanorods derived from metal−organic framework for efficient hydrogen evolution

Chen, Lifeng; Hou, Chun‐Chao; Zou, Lianli; Kitta, Mitsunori; Xu, Qiang

doi:10.1016/j.scib.2020.06.022

Cited by 32 publications

(10 citation statements)

References 52 publications

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“…Hydrogen evolution reaction (HER) is one of the most investigated electrochemical processes for the production of H 2 , whose catalytic formation has relied on the expensive noble metals. − Interestingly, we found that the inexpensive tiny metal phosphide nanoparticle incorporated in hollow porous carbon (MP x –C) prepared by the yeast-based route was able to accelerate the HER reaction with high stability Figure a shows a typical SEM image the Co 2 P–C catalyst that we prepared as hollow carbon-based nanocomposite.…”

Section: Electrochemical Applications Of Hcnsmentioning

confidence: 99%

Manipulating Particle Chemistry for Hollow Carbon-based Nanospheres: Synthesis Strategies, Mechanistic Insights, and Electrochemical Applications

Bin

Guo

et al. 2020

Acc. Chem. Res.

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Conspectus Hollow carbon-based nanospheres (HCNs) have been demonstrated to show promising potential in a large variety of research fields, particularly electrochemical devices for energy conversion/storage. The current synthetic protocols for HCNs largely rely on template-based routes (TBRs), which are conceptually straightforward in creating hollow structures but challenged by the time-consuming operations with a low yield in product as well as serious environmental concerns caused by hazardous etching agents. Meanwhile, they showed inadequate ability to build complex carbon-related architectures. Innovative strategies for HCNs free from extra templates thus are highly desirable and are expected to not only ensure precise control of the key structural parameters of hollow architectures with designated functionalities, but also be environmentally benign and scalable approaches suited for their practical applications. In this Account, we outline our recent research progress on the development of template-free protocols for the creation of HCNs with a focus on the acquired mechanical insight into the hollowing mechanism when no extra templates were involved. We demonstrated that carbon-based particles themselves could act as versatile platforms to create hollow architectures through an effective modulation of their inner chemistry. By means of reaction control, the precursor particles were synthesized into solid ones with a well-designed inhomogeneity inside in the form of different chemical parameters such as molecular weight, crystallization degree, and chemical reactivity, by which we not only can create hollow structures inside particles but also have the ability to tune the key features including compositions, porosity, and dimensional architectures. Accordingly, the functionalities of the prepared HCNs could be systematically altered or optimized for their applications. Importantly, the discussed synthesis approaches are facile and environmentally benign processes with potential for scale-up production. The nanoengineering of HNCs is found to be of special importance for their application in a large variety of electrochemical energy storage and conversion systems where the charge transfer and structural stability become a serious concern. Particular attention in this Account is therefore directed to the potential of HCNs in battery systems such as sodium ion batteries (NIBs) and potassium ion batteries (KIBs), whose electrochemical performances are plagued by the destructive volumetric deformation and sluggish charge diffusion during the intercalation/deintercalation of large-size Na+ or K+. We demonstrated that precise control of the multidimensional factors of the HCNs is critical to offer an optimized design of sufficient reactive sites, excellent charge and mass transport kinetics, and resilient electrode structure and also provide a model system suitable for the study of complicated metal-ion storage mechanisms, such as Na+ storage in a hard carbon anode. We expect that this Account will spark new endea...

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Section: Electrochemical Applications Of Hcnsmentioning

confidence: 99%

Manipulating Particle Chemistry for Hollow Carbon-based Nanospheres: Synthesis Strategies, Mechanistic Insights, and Electrochemical Applications

Bin

Guo

et al. 2020

Acc. Chem. Res.

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“…[4][5][6] However, the process, including two electrons being transferred, 2H + + 2e = H 2 , requires a large overpotential, [7][8][9][10] and thus demands high-efficiency catalysts. [11][12][13] Currently, Ptgroup metals have exhibited overwhelming advantages in lowering the overpotential to produce H 2 and have turned out to be the most efficient catalysts. [14][15][16] However, their high cost and the scarcity limit their large-scale applications.…”

Section: Introductionmentioning

confidence: 99%

Dual-phased Mo₂C/Mo₃N₂/C nanosheets for efficient electrocatalytic hydrogen evolution

et al. 2023

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“…With the highest energy density among all fuels, environmental benignity, and abundant reserve, hydrogen is pursued as a promising energy carrier to replace fossil fuels. [1][2][3] Water electrolysis has been recognized as one of the most eco-friendly ways for efficient production of highly pure hydrogen. [4] Reserving over 96.5 of water resources on Earth, the costless seawater provides an inexhaustible source of hydrogen without worsening the scarcity of freshwater resources.…”

Section: Introductionmentioning

confidence: 99%

Rare‐Earth Doping Transitional Metal Phosphide for Efficient Hydrogen Evolution in Natural Seawater

Qiu

Wang

2022

Small Structures

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Electrolysis of inexhaustible seawater offers a promising way for harvesting practically infinite hydrogen energy without worsening freshwater shortage. Complicated ionic environment of saline seawater, however, places a great burden on catalyst performance for hydrogen evolution. Herein, tailoring the electronic structure of transitional metal phosphide by rare‐earth doping for effectively propelling hydrogen evolution in a wide pH range and natural seawater is reported. The rare‐earth doping leads to not only a nearly zero Gibbs free energy of H* adsorption and lower work function but also faster OH* desorption for rapid release of the active sites, thereby accelerating the hydrogen evolution reaction (HER) kinetics under nonacidic conditions. On this basis, highly conductive and hydrophilic MXene is introduced to further boost the adsorption of hydrogen carriers and charge transfer across the catalyst. Together, they allow the activity, kinetics, and durability of the electrocatalyst for HER to be improved overall. The obtained electrocatalyst shows superior activity to commercial Pt/C in terms of specific surface area and active mass and turnover frequency, as well as 400 times longer lifetime than Pt/C with high Faradaic efficiency in natural seawater. This study presents new insight into the development of viable electrocatalysts for harvesting hydrogen energy from abundant‐reserve seawater.

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Uniformly bimetal-decorated holey carbon nanorods derived from metal−organic framework for efficient hydrogen evolution

Cited by 32 publications

References 52 publications

Manipulating Particle Chemistry for Hollow Carbon-based Nanospheres: Synthesis Strategies, Mechanistic Insights, and Electrochemical Applications

Manipulating Particle Chemistry for Hollow Carbon-based Nanospheres: Synthesis Strategies, Mechanistic Insights, and Electrochemical Applications

Dual-phased Mo₂C/Mo₃N₂/C nanosheets for efficient electrocatalytic hydrogen evolution

Rare‐Earth Doping Transitional Metal Phosphide for Efficient Hydrogen Evolution in Natural Seawater

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Uniformly bimetal-decorated holey carbon nanorods derived from metal−organic framework for efficient hydrogen evolution

Cited by 32 publications

References 52 publications

Manipulating Particle Chemistry for Hollow Carbon-based Nanospheres: Synthesis Strategies, Mechanistic Insights, and Electrochemical Applications

Manipulating Particle Chemistry for Hollow Carbon-based Nanospheres: Synthesis Strategies, Mechanistic Insights, and Electrochemical Applications

Dual-phased Mo2C/Mo3N2/C nanosheets for efficient electrocatalytic hydrogen evolution

Rare‐Earth Doping Transitional Metal Phosphide for Efficient Hydrogen Evolution in Natural Seawater

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Dual-phased Mo₂C/Mo₃N₂/C nanosheets for efficient electrocatalytic hydrogen evolution