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Article
Chemistry, Physical
Lecheng Liang et al.
Summary: This work demonstrates a new catalyst prototype, PdFe3N, for formic acid oxidation reaction (FAOR) with ordered and isolated Pd sites. The as-synthesized PdFe3N/N-rGO shows enhanced catalytic activity, robust stability, and Fe anti-dissolution properties compared to other catalysts. The DFT calculations confirm the benefits of isolated Pd sites for high formate coverage and the suppression of CO formation/poisoning.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xin Zhang et al.
Summary: A novel catalyst design strategy is reported to optimize the Pd sites in pure metallic aerogels for decentralized electrochemical production of hydrogen peroxide (H2O2). By tuning the geometric environments and electronic structures, isolated, single-atom-like Pd motifs are achieved in the Pd2Hg5 aerogel. Heterometal doping leads to a series of M-Pd2Hg5 aerogels, demonstrating tunability of the electronic structure of the Pd active sites. The optimized Au-Pd2Hg5 aerogel exhibits outstanding selectivity and electron transfer efficiency for H2O2 production.
ADVANCED MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Tiancheng Pu et al.
Summary: Strong metal-support interactions (SMSI) is a classic yet fast-growing area in catalysis research. By regulating the interfacial interactions, SMSI phenomenon can encapsulate and stabilize metal nanoparticles, significantly impacting catalytic performance. Engineering SMSI provides a promising approach to steer catalytic performance and tackle energy and environmental challenges effectively.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Multidisciplinary Sciences
Ying Da Wang et al.
Summary: The authors utilize X-ray micro-computed tomography, deep learned super-resolution, multi-label segmentation, and direct multiphase simulation to simulate fuel cells and guide their design, addressing the challenge of accurate liquid water modelling.
NATURE COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Jinfa Chang et al.
Summary: This article investigates the development of high-activity and durable catalysts for direct ethanol fuel cells. The authors propose a Pd/Co@N-C catalyst that can prevent catalyst structural degradation and enhance electron transfer and activity/durability. This study provides a strategy for innovative catalyst structural design and promotes the development of fuel cells and other sustainable energy-related technologies.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Xu Yu et al.
Summary: In this study, nickel single atoms decorated W18O49 nanospheres were synthesized by a facile thermal reduction method and used as probe catalysts to investigate the influence of hydrogen spillover effect on the catalytic performance of hydrogen oxidation reaction. The modified catalyst exhibited enhanced catalytic activity, stability, and resistance to CO poisoning in acidic electrolytes. Both experimentation and theoretical calculations demonstrated that the reversible phase transformation of the WO2.72 substrate strengthened the hydrogen spillover effect and elevated the catalytic performance of the hydrogen oxidation reaction.
Article
Chemistry, Multidisciplinary
He Li et al.
Summary: By using inter-facet edge (IFE) rich WO3 arrays in an electrolyte containing CO32-, reactive oxygen species (ROS), H2O2, and OH. are efficiently generated by water oxidation with total Faraday efficiencies of more than 90%. The IFE favors the adsorption of CO32- and reduces the adsorption energy of OH., while suppressing surface hole accumulation. In situ selective oxidation of benzyl alcohol using the formed OH. achieves a benzaldehyde production rate of approximately 768 μmolh(-1) with near 100% selectivity. This work provides a promising approach to enhance the efficiency and value-added product of oxidation reactions in aqueous solar fuel systems.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Fantao Kong et al.
Summary: N-doped carbon materials with trace amounts of iron show excellent ORR activity and durability without significant contribution by the metal sites. The materials have a unique hollow and hierarchically porous architecture, as well as a noncovalently bonded N-deficient/N-rich heterostructure.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Lingxin Peng et al.
Summary: In this study, a strategy of utilizing the Mott-Schottky effect to regulate electron distribution is demonstrated for developing an effective electrocatalyst for hydrogen evolution in acid electrolyte. The hybrid Ru-WO(2.72) catalyst exhibits superior activity, with the Ru-based mass activity 161.6 times higher than that of commercial Ru/C. The enhanced hydrogen production is attributed to the electron enrichment induced by the Mott-Schottky effect at the metal-metal oxides interface.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Ge Meng et al.
Summary: A highly efficient WC/WO2-WO3 nanosheet heterostructure catalyst with excellent CO tolerance was synthesized via electrochemical reconstruction, significantly enhancing HOR performance and facilitating proton transfer and hydrogen oxidation. The in situ formed WO3 plays a key role in accelerating H-2 adsorption and activation on WC, hydrogen oxidation through HxWO3 phase formation, and H+ desorption from WO2-WO3, leading to greatly enhanced HOR performance with facilitated electron transfer by metallic WO2 and an in situ formed nanosheet structure.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Multidisciplinary
Lixin Su et al.
Summary: The kinetics of hydrogen oxidation reaction (HOR) in alkaline electrolyte is significantly slower than in acidic electrolyte, but the underlying mechanism is not fully understood. In this study, a Pd-Pd4S/C heterostructure is synthesized and its HOR performance in the entire pH range is investigated. Surprisingly, an inflection point at pH 7 is observed, and the role of hydroxyl binding energies (OHBEs) in enhancing HOR performance is highlighted.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Multidisciplinary Sciences
Xiaoning Wang et al.
Summary: This study designs ultrasmall triphenylphosphine-stabilized Pt-6 nanoclusters for electrocatalytic hydrogen oxidation reaction in alkaline solution. The nanocluster electrocatalyst exhibits high mass activity, stability, and outperforms Pt single atoms and Pt nanoparticle analogues. It also shows a high CO-tolerant ability.
NATURE COMMUNICATIONS
(2022)
Article
Multidisciplinary Sciences
Zhimin Jia et al.
Summary: This study reports a novel bimetallic Pt-Fe catalyst with ultralow metal loading, which shows excellent catalytic activity and selectivity in the preferential oxidation of CO (PROX) in hydrogen. The fully-exposed Pt-Fe clusters on the defective graphene surface can achieve complete elimination of CO and maintain good stability for a long period. The construction of fully-exposed bimetallic Pt-Fe catalysts with maximized atomic efficiency and abundant interfacial sites facilitates oxygen activation and CO oxidation, leading to excellent reactivity in practical applications.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Jie Xu et al.
Summary: This study developed Ir single atoms anchored on a WO3 support with a strong electronic metal-support interaction (EMSI), achieving higher conversion efficiency and stability in CO2 cycloaddition reactions. Density functional theory calculations revealed the impact of EMSI effect on the catalytic mechanism.
ADVANCED MATERIALS
(2022)
Article
Multidisciplinary Sciences
Jiadong Chen et al.
Summary: In this study, the integration of Ru nanoparticles on oxygen-deficient WO3-x was found to greatly enhance the activity of hydrogen evolution reaction. Oxygen-deficient WO3-x has a large capacity for storing protons, which increases the hydrogen coverage on the surface of Ru nanoparticles.
NATURE COMMUNICATIONS
(2022)
Article
Multidisciplinary Sciences
Tanmay Ghosh et al.
Summary: Nanoparticle catalysts are widely used in energy systems and chemical production. This study provides atomic-scale insights into the dynamic surface properties of nanoparticles under reactive conditions, which play a crucial role in designing high-performance catalysts.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Martins Vanags et al.
Summary: Energy storage and delivery are crucial for managing renewable power sources, and hydrogen energy is proposed as a major substitute for this purpose. However, membrane separation in single-cell water electrolysis poses a challenge. Decoupled water electrolysis has been proposed as a solution, with hydrogen and oxygen generated in separate alkaline cells. The proposed amphoteric decoupled electrolysis method using an auxiliary electrode shows higher electrolysis efficiency compared to traditional alkaline-based decoupled electrolysis.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Xiaolong Yang et al.
Summary: By utilizing a novel catalyst containing both Ir nanoparticles and Ir single-atom sites, the issue of CO poisoning in proton-exchange membrane fuel cells (PEMFCs) has been successfully addressed, leading to excellent H-2 oxidation activity and CO electro-oxidation activity. The interplay between Ir nanoparticles and Ir single-atom centers confers the catalyst with improved performance in tolerating CO in H-2/CO mixture gas compared to the current best PtRu/C catalyst.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Engineering, Environmental
Han Tian et al.
Summary: WOx-based electrode materials play multiple roles in PEMFCs, such as acid-resisting support, catalyst, hydrogen reservoir, and hydrogen supplier. However, challenges still remain for the large-scale application of WO3-based catalysts.
CHEMICAL ENGINEERING JOURNAL
(2021)
Review
Nanoscience & Nanotechnology
Kensaku Kodama et al.
Summary: Progress has been made in the development of Pt-based nanocatalysts for the oxygen reduction reaction over the past 30 years, with some now in commercial production for PEFCs. However, further improvements in catalytic activity are needed. State-of-the-art catalysts have potential to enhance energy conversion efficiencies and reduce platinum usage in PEFCs, but technical challenges remain for their application in fuel cell vehicles, such as high power density, practical durability, and efficiency.
NATURE NANOTECHNOLOGY
(2021)
Article
Multidisciplinary Sciences
Xian Wang et al.
Summary: This study introduces a novel atomically dispersed IrRu-N-C anode catalyst that shows excellent performance in H-2 fuel cells and can oxidize both CO and H-2 simultaneously. Experimental results indicate that this catalyst significantly outperforms traditional Pt/C catalysts and has the potential to address the CO poisoning issue in PEMFCs.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Chemistry, Physical
Ge Meng et al.
Summary: The developed Ru@WNO-C catalyst exhibits excellent HER catalytic performance and long-term stability, mainly due to the in-situ electron donation from Ru to W and the catalyst structure activation after residual Zn species leaching. Additionally, the catalyst shows outstanding HER catalytic activity in non-acidic solutions.
Article
Chemistry, Multidisciplinary
Yuting Yang et al.
Summary: A cost-effective bifunctional catalyst, Ru/NC@WOC, was successfully developed with superior HOR/HER activity, showing potential for alkaline fuel cells and water electrolyzers.
Article
Multidisciplinary Sciences
Jiayuan Li et al.
Summary: The work function difference between metal and support has been identified as a key factor influencing hydrogen spillover and activity in hydrogen evolution reaction. A small work function difference facilitates hydrogen spillover and enhances activity, providing important insights for the design of hydrogen spillover-based electrocatalysts.
NATURE COMMUNICATIONS
(2021)
Review
Chemistry, Multidisciplinary
Lulu An et al.
Summary: This article briefly presents the reaction mechanism of HOR under alkaline conditions and discusses the critical roles of metal-based catalysts in alkaline HOR, providing atomic-level understanding for catalyst development. It also illustrates potential synthesis methods of metal-based catalysts and highlights the challenges and promising avenues for future studies in this field.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Hongfei Cheng et al.
ADVANCED MATERIALS
(2020)
Article
Multidisciplinary Sciences
Gurong Shen et al.
NATURE COMMUNICATIONS
(2020)
Article
Multidisciplinary Sciences
Tae Hwa Jeon et al.
NATURE COMMUNICATIONS
(2020)
Article
Chemistry, Physical
Chao Xie et al.
Article
Nanoscience & Nanotechnology
Zhifeng Zheng et al.
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Chemistry, Physical
Sang-Mun Jung et al.
Article
Chemistry, Multidisciplinary
Ershuai Liu et al.
ENERGY & ENVIRONMENTAL SCIENCE
(2020)
Article
Chemistry, Physical
Zhiyan He et al.
Review
Chemistry, Multidisciplinary
Xiaoyu Tian et al.
ADVANCED MATERIALS
(2019)
Article
Chemistry, Multidisciplinary
Bo Huang et al.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2019)
Article
Chemistry, Physical
Yeji Choi et al.
JOURNAL OF MATERIALS CHEMISTRY A
(2019)
Article
Chemistry, Physical
Han Tian et al.
JOURNAL OF MATERIALS CHEMISTRY A
(2019)
Article
Electrochemistry
Jie Zheng et al.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2018)
Review
Chemistry, Multidisciplinary
Jianlin Shi
