A5047046253- Electrocatalysts for Energy Conversion
- Fuel Cells and Related Materials
- Advanced battery technologies research
- Catalytic Processes in Materials Science
- Advancements in Battery Materials
- MXene and MAX Phase Materials
- Supercapacitor Materials and Fabrication
- Nanomaterials for catalytic reactions
- Extraction and Separation Processes
- Advanced Battery Materials and Technologies
- Advanced Photocatalysis Techniques
- Recycling and Waste Management Techniques
- Advanced Memory and Neural Computing
- Catalysis and Hydrodesulfurization Studies
- Electrochemical Analysis and Applications
- Machine Learning in Materials Science
- Advancements in Solid Oxide Fuel Cells
- Bone Tissue Engineering Materials
- Ionic liquids properties and applications
- Magnesium Alloys: Properties and Applications
- Semiconductor materials and devices
Harbin Institute of Technology
2020-2024
Jilin University
2016-2018
Regulating the electronic states of single atomic sites around Fermi level remains a major concern for boosting electrocatalytic oxygen reduction reaction (ORR). Herein, Fe d-orbital splitting manner modulation strategy by constructing axial coordination on FeN4 is presented. Experimental investigations and theoretical calculations reveal that tractions induce distortion square-planar field (FeN4 SP), up to quasi-octahedral O1 OCquasi ), thus leading electron rearrangement with diluted...
Abstract Fe–N–C catalyst for oxygen reduction reaction (ORR) has been considered as the most promising nonprecious metal due to its comparable catalytic performance Pt in proton exchange membrane fuel cells (PEMFCs). The active centers of Fe–pyrrolic N 4 have proven be extremely ORR. However, forming a stable structure is huge challenge. Here, Cyan‐Fe–N–C with intrinsic center constructed help axial Fe C atomic clusters, which shows half‐wave potential up 0.836 V (vs. RHE) acid environment....
Switching the oxygen adsorption configuration and reaction pathway breaks Sabatier's vertex achieves an extraordinary acidic reduction performance.
Abstract Atomically dispersed metal‐nitrogen‐carbon (M‐N‐C) catalysts have exhibited encouraging oxygen reduction reaction (ORR) activity. Nevertheless, the insufficient long‐term stability remains a widespread concern owing to inevitable 2‐electron byproducts, H 2 O . Here, we construct Co‐N‐Cr cross‐interfacial electron bridges (CIEBs) via interfacial electronic coupling between Cr 3 and Co‐N‐C, breaking activity‐stability trade‐off. The partially occupied 3d‐orbitals of CIEBs induce...
The main group metals are commonly perceived as catalytically inert in the context of oxygen reduction reactions (ORR) due to delocalized valence orbitals. Regulating local environment and structure metal center coordinated by nitrogen ligands (M-N
With the rapid development of consumer electronics and electric vehicles (EV), a large number spent lithium-ion batteries (LIBs) have been generated worldwide. Thus, effective recycling technologies to recapture significant amount valuable metals contained in LIBs are highly desirable prevent environmental pollution resource depletion. In this work, novel technology regenerate LiNi 1/3 Co Mn O 2 cathode material from with different chemistries has developed. By dismantling, crushing,...
Abstract Cobalt–nitrogen–carbon is hitherto considered as one of the most satisfactory alternatives to precious metal catalysts for oxygen electrocatalysts. However, precisely tuning local coordination Co sites and thus engineering d‐orbital electron configuration optimize binding energy intermediates remains a huge challenge. Herein, robust electrostatic self‐assembly strategy developed engineer penta‐coordinated by introducing axial O ligands with atomic‐level precision form CoN 4 1...
Developing low-loading Pt-based catalysts possessing glorious catalytic performance can accelerate oxygen reduction reaction (ORR) and hence significantly advance the commercialization of proton exchange membrane fuel cells. In this report, we propose a hybrid catalyst that consists sub-3 nm PtCo intermetallic nanoparticles carried on Co–N–C (PtCo/Co–N–C) via microwave-assisted polyol procedure subsequent heat treatment. Atomically dispersed Co atoms embedded in carriers diffuse into lattice...
A “vacuum vapor migration strategy” is employed to successfully prepare a novel CoNi–N–C catalyst containing uniformly dispersed CoNi alloy nanoparticles as conceptually solid–ligand coupling with atomic Co–N x –C active sites.
Abstract Diatomic catalysts (DACs), as a frontier of research on atomically dispersed catalysts, have drawn great attention, especially in electrocatalysis. However, most the current synthetic strategies for DACs suffer from poor efficiency and high cost. In this work, novel noncovalent assembly strategy is reported efficient synthesis DACs. By aid two kinds intermolecular force, π–π stacking Coulomb forces, pair metal complex ions with opposite electrical charges spontaneously loaded onto...
Carbon supports for cathodic catalysts in proton-exchange membrane fuel cells suffer from rapid corrosion and instability; therefore, alternative with a stable structure high electric conductivity are highly required. In this paper, three-dimensional support hybridized by MXene Ketjen Black is developed, which sandwiched between nanosheets (MCM). After decorating Pt nanoparticles facile wet-chemical approach, (3D) Pt/MCM catalyst obtained. The intercalated prevents the stacking of...
Densely populated single-atom Fe–N x -embedded carbon nanosheets (SAs-Fe/N-CNSs) synthesized by a Zn/g-C 3 N 4 -mediated dual-template strategy with excellent performance on ORRs and Zn–air batteries.
Heterostructures show great potential in energy storage due to their multipurpose structures and function. Recently, two-dimensional (2D) graphene has been widely regarded as an excellent substrate for active materials its large specific surface area superior electrical conductivity. However, it is prone self-aggregation during charging discharging, which limits electrochemical performance. To address the agglomeration problem, we interspersed polypyrrole carbon nanotubes between cavities...
Beyond reasonable designing catalysts, the optimization of preparing air cathode has far-reaching implications for development Zinc-air batteries. In this study, effect Polytetrafluoroethylene (PTFE) in current collecting layer on performance battery was investigated. The results showed that as polytetrafluoroethylene content and heat treatment temperature changed, hydrophobicity porosity also thereby affecting cathode. assembled with PTFE-3-300 possessed an excellent electrochemical...
Abstract Atomically dispersed metal‐nitrogen‐carbon (M‐N‐C) catalysts have exhibited encouraging oxygen reduction reaction (ORR) activity. Nevertheless, the insufficient long‐term stability remains a widespread concern owing to inevitable 2‐electron byproducts, H 2 O . Here, we construct Co‐N‐Cr cross‐interfacial electron bridges (CIEBs) via interfacial electronic coupling between Cr 3 and Co‐N‐C, breaking activity‐stability trade‐off. The partially occupied 3d‐orbitals of CIEBs induce...
Abstract The main group metals are commonly perceived as catalytically inert in the context of oxygen reduction reactions (ORR) due to delocalized valence orbitals. Regulating local environment and structure metal center coordinated by nitrogen ligands (M‐N x ) is a promising approach accelerate catalytic dynamics. Herein, we, for first time, report atomically dispersed Al catalysts with N C atoms 4‐electron ORR. axial pyrrolyl (N o constructed Al‐N 4 ‐N moiety regulate p‐band center,...
Proton exchange membrane fuel cells have garnered significant attention as a sustainable energy conversion technology amidst the escalating consumption of fossil fuels. Although Pt-based catalysts are effective in oxygen reduction...