ORCID Profile
0000-0001-7160-3480
Current Organisations
Beijing Normal University - Zhuhai Campus
,
German Center for Neurodegenerative Diseases
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Publisher: Springer Science and Business Media LLC
Date: 06-05-2020
DOI: 10.1007/S40243-020-00170-W
Abstract: Electrochemical water splitting driven by renewable energy-derived electricity is considered as the most promising pathway for delivering clean and sustainable hydrogen production. The key to achieving an efficient water splitting process is developing highly active electrocatalysts. Two-dimensional (2D) nanomaterials hold great promise in the electrocatalysis field due to their unique physicochemical properties. Some of them are not active enough because of the poor intrinsic activity, low density of active sites or low electrical conductivity. Some are inert for electrocatalytic reactions, but are able to work as the functional substrates for hybrid electrocatalysts. Thus, tremendous strategies have been developed to modulate the physicochemical and electronic properties of 2D nanomaterial-based electrocatalysts, and to make full use of the functionalities of functional 2D nanomaterial substrates to achieve fast catalytic reaction kinetics. In this review, the recent progress on the well-established design strategies for the 2D nanomaterials-based electrocatalysts is highlighted. The perspectives on the current challenges and future development of 2D electrocatalysts are addressed.
Publisher: Springer Science and Business Media LLC
Date: 06-10-2022
DOI: 10.1038/S41467-022-33625-X
Abstract: Overcoming the sluggish kinetics of alkaline hydrogen oxidation reaction (HOR) is challenging but is of critical importance for practical anion exchange membrane fuel cells. Herein, abundant and efficient interfacial active sites are created on ruthenium (Ru) nanoparticles by anchoring atomically isolated chromium coordinated with hydroxyl clusters (Cr 1 (OH) x ) for accelerated alkaline HOR. This catalyst system delivers 50-fold enhanced HOR activity with excellent durability and CO anti-poisoning ability via switching the active sites from Ru surface to Cr 1 (OH) x -Ru interface. Fundamentally different from the conventional mechanism merely focusing on surface metal sites, the isolated Cr 1 (OH) x could provide unique oxygen species for accelerating hydrogen or CO spillover from Ru to Cr 1 (OH) x . Furthermore, the original oxygen species from Cr 1 (OH) x are confirmed to participate in hydrogen oxidation and H 2 O formation. The incorporation of such atomically isolated metal hydroxide clusters in heterostructured catalysts opens up new opportunities for rationally designing advanced electrocatalysts for HOR and other complex electrochemical reactions. This work also highlights the importance of size effect of co-catalysts, which should also be paid substantial attention to in the catalysis field.
Publisher: Elsevier BV
Date: 05-2022
Publisher: Elsevier BV
Date: 06-2018
Publisher: American Chemical Society (ACS)
Date: 08-06-2022
Publisher: Wiley
Date: 09-11-2018
Abstract: Developing clean and sustainable energies as alternatives to fossil fuels is in strong demand within modern society. The oxygen evolution reaction (OER) is the efficiency-limiting process in plenty of key renewable energy systems, such as electrochemical water splitting and rechargeable metal-air batteries. In this regard, ongoing efforts have been devoted to seeking high-performance electrocatalysts for enhanced energy conversion efficiency. Apart from traditional precious-metal-based catalysts, nickel-based compounds are the most promising earth-abundant OER catalysts, attracting ever-increasing interest due to high activity and stability. In this review, the recent progress on nickel-based oxide and (oxy)hydroxide composites for water oxidation catalysis in terms of materials design/synthesis and electrochemical performance is summarized. Some underlying mechanisms to profoundly understand the catalytic active sites are also highlighted. In addition, the future research trends and perspectives on the development of Ni-based OER electrocatalysts are discussed.
Publisher: Wiley
Date: 29-06-2018
Abstract: Transition-metal dichalcogenides (TMDs) are promising electrocatalysts toward the hydrogen evolution reaction (HER) in acid media, but they show significantly inferior activity in alkaline media due to the extremely sluggish water dissociation kinetics. Herein, CoSe
Publisher: Springer Science and Business Media LLC
Date: 11-04-2014
Publisher: Elsevier BV
Date: 12-2015
Publisher: Wiley
Date: 07-08-2019
Abstract: Highly active and durable electrocatalysts for the oxygen evolution reaction (OER) is greatly desired. Iridium oxide/graphitic carbon nitride (IrO
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8NR07045H
Abstract: Constructing heterostructures is an effective strategy for designing efficient electrocatalysts.
Publisher: Wiley
Date: 14-12-2019
Abstract: Electrochemical water splitting for hydrogen generation is a vital part for the prospect of future energy systems, however, the practical utilization relies on the development of highly active and earth-abundant catalysts to boost the energy conversion efficiency as well as reduce the cost. Molybdenum diselenide (MoSe
Publisher: Wiley
Date: 30-04-2018
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5NR02961A
Abstract: CoMoO 4 nanowire arrays on carbon cloth (CC) improve the supercapacitor performance. Meanwhile, a flexible all-solid-state asymmetric supercapacitor (ASC) device demonstrates highly stable cyclic performance with outstanding robust flexibility.
Publisher: Elsevier BV
Date: 10-2019
Publisher: Wiley
Date: 12-2017
Publisher: American Chemical Society (ACS)
Date: 03-05-2018
Publisher: Wiley
Date: 19-05-2021
Abstract: Exploring highly active and low‐cost electrocatalysts is essential to the development of sustainable and efficient energy conversion technologies. 2D nanomaterials with unique electronic structure and physicochemical properties have great potential in constructing advanced electrocatalysts. 2D carbonaceous graphene and its analogs (e.g., reduced graphite oxide, carbon nanosheets) have been extensively studied in this field, while there recently has been considerable attention focusing on other 2D metal‐free nanomaterials (e.g., g‐C 3 N 4 , h‐BN). Here, the recent advances of 2D metal‐free nanomaterials beyond graphene and its analogs toward a wide range of electrocatalysis applications are reviewed. The strategies for constructing advanced 2D metal‐free nanomaterial‐based electrocatalysts are discussed in terms of surface engineering and interface engineering. Finally, perspectives on the challenges and future directions of these unique material systems in the electrocatalysis area are provided.
Publisher: Wiley
Date: 31-10-2018
Abstract: Oxygen electrocatalysis, including the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR), is one of the most important electrochemical processes for sustainable energy conversion and storage technologies. Herein, nickel-based bicarbonates are, for the first time, developed as catalysts for oxygen electrocatalysis, and demonstrate superior electrocatalytic performance in alkaline media. Iron doping can significantly tune the real valence of nickel ions, and consequently tailor the electrocatalytic ability of bicarbonates. Among the nickel-based bicarbonates, Ni
Publisher: Wiley
Date: 11-12-2018
Abstract: Electrochemical water splitting is one of the potential approaches for making renewable energy production and storage viable. The oxygen evolution reaction (OER), as a sluggish four-electron electrochemical reaction, has to overcome high overpotential to accomplish overall water splitting. Therefore, developing low-cost and highly active OER catalysts is the key for achieving efficient and economical water electrolysis. In this work, Fe-doped NiMoO
Publisher: Wiley
Date: 12-04-2022
Abstract: Single‐atom catalysts (SACs) have attracted great attention in the field of electrocatalysis due to their exceptional activity, selectivity, 100% atom utilization, and tailorability of active sites at atomic level. The metal–support interactions and interatomic synergies, however, are severely limited due to the isolation of active sites in SACs which hinder their applications in some complex reactions. To this end, supported sub‐nanometer cluster catalysts (SNCCs, nm) with nearly fully exposed active atoms may outperform the SACs in some specific catalytic reactions. The presence of abundant chemical bonds in the clusters can flexibly regulate the support–cluster interaction and build ensemble effect in the sub‐nanometer clusters for different electrocatalysis applications. In this review, recent advances of supported SNCCs in electrocatalysis applications are summarized and discussed for the first time. In particular, the importance of the support–cluster interactions and ensemble effect of the clusters in determining the catalytic performance of SNCCs are highlighted. Lastly, challenges and opportunities in SNCCs electrocatalysis are prospected.
Publisher: Wiley
Date: 14-04-2022
Abstract: Developing a reliable synthesis strategy to concurrently realize electronic structure modulation and two‐dimensionalization of materials is of paramount significance yet still challenging. Herein, a facile and universal strategy is reported to fabricate defect‐abundant atomic‐layered materials with unique electronic structures by mechanical shear‐assisted exfoliation. As a proof‐of‐concept demonstration, atomic‐layered defect‐rich LiCoO 2 nanosheets (AD‐LCO) are successfully synthesized, which enable accelerated oxygen evolution kinetics with a substantially decreased oxygen evolution reaction overpotential by 184 and 216 mV at 10 and 50 mA cm –2 , respectively. X‐ray absorption spectroscopy suggests that AD‐LCO possesses more d ‐band holes and enhanced Co‐O covalency. Density functional theory calculations reveal that the presence of Co lattice vacancies can optimize the adsorption kinetics of intermediates, consequently lowering the energy barrier of the rate‐determining step. Importantly, this method has universal applicability to the fabrication of other ultrathin defect‐rich 2D materials such as BN, WS 2 , and MoS 2 . The study has potential implications for offering novel insights into the rational design of ultrathin 2D materials with abundant surface defects for various applications.
Publisher: American Chemical Society (ACS)
Date: 12-08-2020
Publisher: Elsevier BV
Date: 10-2015
Publisher: No publisher found
Date: 1996
Publisher: American Chemical Society (ACS)
Date: 08-12-2017
Publisher: Elsevier BV
Date: 04-1996
Publisher: Wiley
Date: 05-03-2019
Publisher: Wiley
Date: 05-2022
Abstract: Developing efficient platinum (Pt)‐based electrocatalysts with high tolerance to CO poisoning for the methanol oxidation reaction is critical for the development of direct methanol fuel cells. In this work, cobalt single atoms are introduced to enhance the electrocatalytic performance of N‐doped carbon supported Pt (N‐C/Pt) for the methanol oxidation reaction. The cobalt single atoms are believed to play a critical role in accelerating the prompt oxidation of CO to CO 2 and minimizing the CO blocking of the adjacent Pt active sites. Benefitting from the synergistic effects among the Co single atoms, the Pt nanoparticles, and the N‐doped carbon support, the Co‐modified N‐C/Pt (Co‐N‐C/Pt) electrocatalyst simultaneously delivers impressive electrocatalytic activity and durability with lower onset potential and superb CO poisoning resistance as compared to the N‐C/Pt and the commercial Pt/C electrocatalysts.
Location: United States of America
Location: United States of America
No related grants have been discovered for Yaping Chen.