Crystalline/amorphous heterostructure offering highly efficient overall water splitting and urea electrolysis

Qin, Mingliang; Li, Yadong; Zhang, Huaming; Humayun, Muhammad; Xu, Xuefei; Fu, Yanjun; Kadirov, Marsil K.; Wang, Chundong

doi:10.1016/j.jallcom.2022.166071

Cited by 15 publications

(4 citation statements)

References 67 publications

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Section: Methods For the Controllable Synthesis Of Amorphous Nanomate...mentioning

confidence: 99%

“…Another example is the use of a low-cost and single-step hydrothermal method by Qin and co-workers, as shown in Figure d–h. They employed a low-cost and single-step hydrothermal method to synthesize low-cost 3D NiTe nanorod arrays grown on Ni foam, followed by deposition of amorphous Ni-S nanospheres on the NiTe nanorod array surface to obtain higher-level NiTe/Ni-S heterostructures.…”

Section: Methods For the Controllable Synthesis Of Amorphous Nanomate...mentioning

confidence: 99%

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Recent Progress of Amorphous Nanomaterials

Kang

Yang

et al. 2023

Chem. Rev.

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Amorphous materials are metastable solids with only short-range order at the atomic scale, which results from local intermolecular chemical bonding. The lack of long-range order typical of crystals endows amorphous nanomaterials with unconventional and intriguing structural features, such as isotropic atomic environments, abundant surface dangling bonds, highly unsaturated coordination, etc. Because of these features and the ensuing modulation in electronic properties, amorphous nanomaterials display potential for practical applications in different areas. Motivated by these elements, here we provide an overview of the unique structural features, the general synthetic methods, and the potential for applications covered by contemporary research in amorphous nanomaterials. Furthermore, we discussed the possible theoretical mechanism for amorphous nanomaterials, examining how the unique structural properties and electronic configurations contribute to their exceptional performance. In particular, the structural benefits of amorphous nanomaterials as well as their enhanced electrocatalytic, optical, and mechanical properties, thereby clarifying the structure−function relationships, are highlighted. Finally, a perspective on the preparation and utilization of amorphous nanomaterials to establish mature systems with a superior hierarchy for various applications is introduced, and an outlook for future challenges and opportunities at the frontiers of this rapidly advancing field is proposed.

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Section: Methods For the Controllable Synthesis Of Amorphous Nanomate...mentioning

confidence: 99%

Section: Methods For the Controllable Synthesis Of Amorphous Nanomate...mentioning

confidence: 99%

Recent Progress of Amorphous Nanomaterials

Kang

Yang

et al. 2023

Chem. Rev.

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“…142 Apart from the self-supported hierarchical nanostructure and the rational chemical composition, the presence of VO x in the sulfide nanosheets upgrades the catalytic performance by strengthening the Ni-O bonds. Amorphous TM sulfides/chalcogenides heterostructures which gather the advantages of different sulfides and benefit from the synergistic effect among different components also present high ESM activities, such as MoS x @Co 9 S 8 @Ni 3 S 2 /NF, 139 Ni 3 S 2 /MoS x nanosheets/NF, 143 NiTe/amorphous NiS, 34 Mn-Cd-S@amorphous-Ni 3 S 2 , 144 37 First, the outer amorphous NiSe x phase can efficiently decrease the size of inner crystalline particles and stabilize them from aggregation, which contributes to a large surface area. Second, the rich defect sites of the amorphous NiSe x provide abundant electroactive centers, and the inner NiSe 2 structure's good electrical conductivity leads to a synergistic effect, thus enhancing the composite's catalytic activity and stability.…”

Section: Heterostructure Constructionmentioning

confidence: 99%

“… 142 Apart from the self‐supported hierarchical nanostructure and the rational chemical composition, the presence of VO x in the sulfide nanosheets upgrades the catalytic performance by strengthening the Ni–O bonds. Amorphous TM sulfides/chalcogenides heterostructures which gather the advantages of different sulfides and benefit from the synergistic effect among different components also present high ESM activities, such as MoS x @Co 9 S 8 @Ni 3 S 2 /NF, 139 Ni 3 S 2 /MoS x nanosheets/NF, 143 NiTe/amorphous NiS, 34 Mn–Cd–S@amorphous‐Ni 3 S 2 , 144 amorphous MoS 2 /CoS/Co 0.85 Se nanotube arrays, 35 and a‐MoS 2 –Ni 3 S 2 /NF 145 …”

Section: Amorphous Tm Chalcogenidesmentioning

confidence: 99%

Design of earth‐abundant amorphous transition metal‐based catalysts for electrooxidation of small molecules: Advances and perspectives

Chen

Han

Zheng

et al. 2023

SusMat

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Electrochemical oxidation of small molecules (e.g., water, urea, methanol, hydrazine, and glycerol) has gained growing scientific interest in the fields of electrochemical energy conversion/storage and environmental remediation. Designing cost-effective catalysts for the electrooxidation of small molecules (ESM) is thus crucial for improving reaction efficiency. Recently, earth-abundant amorphous transition metal (TM)-based nanomaterials have aroused souring interest owing to their earth-abundance, flexible structures, and excellent electrochemical activities. Hundreds of amorphous TM-based nanomaterials have been designed and used as promising ESM catalysts. Herein, recent advances in the design of amorphous TM-based ESM catalysts are comprehensively reviewed. The features (e.g., large specific surface area, flexible electronic structure, and facile structure reconstruction) of amorphous TM-based ESM catalysts are first analyzed. Afterward, the design of various TM-based catalysts with advanced strategies (e.g., nanostructure design, component regulation, heteroatom doping, and heterostructure construction) is fully scrutinized, and the catalysts' structure-performance correlation is emphasized. Future perspectives in the development of cost-effective amorphous TM-based catalysts are then outlined. This review is expected to provide practical strategies for the design of next-generation amorphous electrocatalysts.

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Superhydrophilicity and Electronic Modulation on Self‐Supported Lignin‐Derived Carbon Coupled with NiO@MoNi₄ for Enhancing Urea Electrolysis

Wang,

Qian,

et al. 2024

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Developing highly efficient biomass‐derived carbon‐based electrocatalysts remains challenging for urea electrolysis because most of these electrocatalysts show powder morphology, which can lead to Ostwald ripening during the reaction process, and its reaction mechanism should be further verified. Herein, self‐supported lignin‐derived carbon coupling NiO@MoNi4 heterojunction (NiO@MoNi4/C) possesses superhydrophilic properties and electronic modulation, boosting the performance of urea electrolysis. Electrochemical results show that an indirect oxidation step for urea oxidation reaction (UOR) and Volmer‐Heyrovsky mechanism for hydrogen evolution reaction (HER) occurs on the surface of NiO@MoNi4/C. It displays low potentials for UOR (E10/500/1000 = 1.28/1.41/1.47 V) and for HER (E−10/−500/−1000 = −38/−264/−355 mV) in 1.0 M KOH + 0.5 M urea electrolyte solution. The good activity is ascribed to the self‐supported lignin‐derived carbon and heterojunction, which increases the number of active sites, optimizes electronic structure, and improves electron transfer. Benefiting from the self‐supported lignin‐derived carbon, NiO@MoNi4/C demonstrates corrosion resistance and superhydrophilicity, which avoids Ostwald ripening and accelerates gas‐liquid transfer, thus, maintaining for 100 h at ±1000/±1500 mA cm−2 during the UOR and HER test. This work provides a good catalyst for urea electrolysis and presents a promising way for preparing lignin‐derived carbon‐based catalysts while expanding the application of lignin‐based biomass carbon materials.

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Crystalline/amorphous heterostructure offering highly efficient overall water splitting and urea electrolysis

Cited by 15 publications

References 67 publications

Recent Progress of Amorphous Nanomaterials

Recent Progress of Amorphous Nanomaterials

Design of earth‐abundant amorphous transition metal‐based catalysts for electrooxidation of small molecules: Advances and perspectives

Superhydrophilicity and Electronic Modulation on Self‐Supported Lignin‐Derived Carbon Coupled with NiO@MoNi₄ for Enhancing Urea Electrolysis

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Crystalline/amorphous heterostructure offering highly efficient overall water splitting and urea electrolysis

Cited by 15 publications

References 67 publications

Recent Progress of Amorphous Nanomaterials

Recent Progress of Amorphous Nanomaterials

Design of earth‐abundant amorphous transition metal‐based catalysts for electrooxidation of small molecules: Advances and perspectives

Superhydrophilicity and Electronic Modulation on Self‐Supported Lignin‐Derived Carbon Coupled with NiO@MoNi4 for Enhancing Urea Electrolysis

Contact Info

Product

Resources

About

Superhydrophilicity and Electronic Modulation on Self‐Supported Lignin‐Derived Carbon Coupled with NiO@MoNi₄ for Enhancing Urea Electrolysis