Yifei Xu

ORCID: 0000-0001-5180-8892
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About
Contact & Profiles
Research Areas
  • Calcium Carbonate Crystallization and Inhibition
  • Advancements in Battery Materials
  • Bone Tissue Engineering Materials
  • Advanced Battery Materials and Technologies
  • 2D Materials and Applications
  • Supercapacitor Materials and Fabrication
  • Advanced battery technologies research
  • Aerogels and thermal insulation
  • Organic Electronics and Photovoltaics
  • Paleontology and Stratigraphy of Fossils
  • Electrocatalysts for Energy Conversion
  • Advanced Electron Microscopy Techniques and Applications
  • Covalent Organic Framework Applications
  • Luminescence and Fluorescent Materials
  • Nanomaterials for catalytic reactions
  • Graphene research and applications
  • Synthesis and properties of polymers
  • Polydiacetylene-based materials and applications
  • Semiconductor materials and interfaces
  • Iron oxide chemistry and applications
  • Conducting polymers and applications
  • Advanced Photocatalysis Techniques
  • Advanced Memory and Neural Computing
  • Bone health and osteoporosis research
  • Crystallization and Solubility Studies

Fudan University
2022-2025

Collaborative Innovation Center of Chemistry for Energy Materials
2025

Collaborative Innovation Center of Advanced Microstructures
2021-2023

Nanjing University
2012-2023

Qingdao University
2022-2023

Eindhoven University of Technology
2016-2021

University of Leeds
2020-2021

University of Illinois Urbana-Champaign
1993

Urea oxidation reaction (UOR) is an ideal replacement of the conventional anodic oxygen evolution (OER) for efficient hydrogen production due to favorable thermodynamics. However, UOR activity severely limited by high potential Ni-based catalysts form Ni3+ , which considered as active site UOR. Herein, using in situ cryoTEM, cryo-electron tomography, and Raman, combined with theoretical calculations, a multistep dissolution process nickel molybdate hydrate reported, whereby NiMoO4 ·xH2 O...

10.1002/adma.202301549 article EN Advanced Materials 2023-04-14

The future deployment of terawatt-scale proton exchange membrane water electrolyzer (PEMWE) technology necessitates development an efficient oxygen evolution catalyst with low cost and long lifetime. Currently, the stability most active iridium (Ir) catalysts is impaired by dissolution, redeposition, detachment, agglomeration Ir species. Here we present a ripening-induced embedding strategy that securely embeds in cerium oxide support. Cryogenic electron tomography all-atom kinetic Monte...

10.1126/science.adr3149 article EN Science 2025-01-02

Many biomineral crystals form complex non-equilibrium shapes, often via transient amorphous precursors. Also in vitro can be grown with morphologies, such as thin films or nanorods. In many cases this involves charged polymeric additives that a polymer-induced liquid precursor (PILP). Here, we investigate the CaCO3 based PILP process variety of techniques including cryoTEM and NMR. The initial products are 30-50 nm calcium carbonate (ACC) nanoparticles ~2 nanoparticulate texture. We show...

10.1038/s41467-018-05006-w article EN cc-by Nature Communications 2018-06-27

Abstract The mineralized collagen fibril is the basic building block of bone, and commonly pictured as a parallel array ultrathin carbonated hydroxyapatite (HAp) platelets distributed throughout collagen. This orientation often attributed to an epitaxial relationship between HAp molecules inside 2D voids within fibril. Although recent studies have questioned this model, structural matrix HAp, mechanisms by which directs mineralization remain unclear. Here, we use XRD reveal that in are fact...

10.1038/s41467-020-18846-2 article EN cc-by Nature Communications 2020-10-08

Abstract Osteoporosis is an incurable chronic disease characterized by a lack of mineral mass in the bones. Here, full recovery osteoporotic bone achieved using calcium phosphate polymer‐induced liquid‐precursor (CaP‐PILP). This free‐flowing CaP‐PILP material displays excellent inductivity and able to readily penetrate into collagen fibrils form intrafibrillar hydroxyapatite crystals oriented along c ‐axis. ability attributed microstructure material, which consists homogeneously distributed...

10.1002/advs.201900683 article EN cc-by Advanced Science 2019-08-20

ConspectusMorphology plays an essential role in chemistry through the segregation of atoms and/or molecules into different phases, delineated by interfaces. This is a general process materials synthesis and exploited many fields including colloid chemistry, heterogeneous catalysis, functional molecular systems. To rationally design complex materials, we must understand control morphology evolution. Toward this goal, utilize cryogenic transmission electron microscopy (cryoTEM), which can...

10.1021/acs.accounts.7b00107 article EN cc-by-nc-nd Accounts of Chemical Research 2017-06-30

Abstract Diabetic wound is a significant challenge for clinical treatment with high morbidity and mortality. Plenty of hydrogels good biocompatibility have been widely used in diabetic healing. However, most them cannot be directly absorbed utilized by the wounds, which prolongs regeneration time. Here new type healing hydrogel developed that based on histidine, natural dietary essential amino acid tissue formation. The cross‐linked zinc ions (Zn 2+ ) sodium alginate (SA) via dynamic...

10.1002/adhm.202200516 article EN Advanced Healthcare Materials 2022-05-10

Flash Joule heating of highly porous graphene oxide (GO) aerogel monoliths to ultrahigh temperatures is exploited as a low carbon footprint technology engineer functional materials. Aerogel up 3000 K demonstrated for the first time, with fast kinetics (∼300 K·min–1), enabling rapid and energy-efficient flash treatments. The wide applicability ultrahigh-temperature in range material fabrication challenges. Ultrahigh-temperature used graphitic annealing hydrothermal GO aerogels at time scales...

10.1021/jacs.3c06349 article EN cc-by Journal of the American Chemical Society 2023-12-30

Nanocarbon aerogels display outstanding electrical and solar thermal heating efficiencies. However, little is known about the relationship between their microstructure performance. In this study, two different types of carbon nanotube (CNT) were synthesized via an ice-templating (IT) emulsion-templating (ET) approach, respectively, which induces a drastic difference in internal microstructures, cross-linking densities, porosities. These structural differences give rise to substantial...

10.1021/acs.chemmater.0c04166 article EN Chemistry of Materials 2020-12-15

As a result of the non-directionality ionic bonds, oppositely charged ions always assemble into closely packed clusters or crystals rather than linear structured species. Here, we generated series calcium carbonate chains, (Ca2+CO32-)n, with an orientated directionality interactions. The formation these chains long-range ordered interactions was originally induced by dipole orientation and subsequently preserved capping agents. According to appropriately established folding-capping model,...

10.1021/acs.jpclett.4c00069 article EN The Journal of Physical Chemistry Letters 2024-02-29

Bone is a hierarchical tissue in which the extracellular matrix consists of hydroxyapatite (HAP) crystals embedded collagen matrix. Artificial bone regeneration remains great challenge due to difficulty balancing chemical composition, biological compatibility, and mechanical performance implant. Biomineralization starts from formation hydrogel-like biomacromolecule many cases, while mineralization HAP often builds amorphous calcium phosphate (ACP) nanoclusters. Inspired by these discoveries,...

10.1021/acsabm.9b00270 article EN ACS Applied Bio Materials 2019-08-27

Aluminum is the most abundant metal element in Earth's crust, thus developing rechargeable aluminum-ion batteries (AIBs) provides an ideal opportunity to realize cells with pleasing energy-to-price ratios. However, further development of AIBs plagued by scarcity suitable positive electrode materials. Here, for first time, a tin-based alloy material AIBs, Co3 Sn2 wrapped graphene oxide (Co3 @GO composite) well-designed and investigated understand aluminum storage behavior. A series...

10.1002/smll.202203236 article EN Small 2022-07-20

Constructing the backbones of polymers with metal atoms is an attractive strategy to develop new functional polymeric materials, but it has yet be studied due synthetic challenges. Here, are interconnected as yield metal-backboned (MBPs). Rational design multidentate ligands synthesized via efficient iterative approach leads successful construction a series nickel-backboned (NBPs) well-defined lengths and up 21 nickel atoms, whose structures systematically confirmed. These NBPs exhibit...

10.1002/anie.202216060 article EN Angewandte Chemie International Edition 2023-01-14

Abstract Cryogenic transmission electron microscopy (cryo‐TEM) has impacted biology and materials science profoundly due to its power in studying aqueous specimens. However, it remains challenging extend this technique organic solvent systems as solvents are often difficult vitrify unstable under beams. Here, we studied the response of 23 most commonly used vitrification exposure cryo‐TEM experiments. Optimized method was determined for each solvents, tolerances were thoroughly measured...

10.1002/rpm.20230025 article EN cc-by Deleted Journal 2023-11-01

Two-dimensional layered structural materials exhibit a wide range of properties due to their ultrahigh specific surface area. However, achieving ordered exfoliation obtain uniform two-dimensional structures remains challenging. In this study, we developed supramolecular system by covalently bonding hexathiobenzene (HB) into β-cyclodextrin create light-responsive moiety, followed coassembly with bipyridine and nickel ions form polypseudorotaxane (PR) system, which enables an in situ...

10.1021/acsmacrolett.4c00815 article EN ACS Macro Letters 2025-01-06

Solid polymer electrolytes (SPEs) with high ion conduction and interfacial stability are crucial for advancing high-performance solid-state batteries. While tuning weak solvation structures shows promise in enhancing stability, it remains challenging to concurrently achieve Li+ conductivity. Herein, we introduce a single-ion polymer-in-salt (SIP-in-salt) electrolyte, which not only provides additional charge carriers enhanced salt compatibility via an ionic backbone but also forms nanometric...

10.1021/jacs.5c01574 article EN Journal of the American Chemical Society 2025-04-20

Imitating the multinodal structures of plants and arthropods, precisely engineered multisegment nanostructures demonstrate enhanced synergistic properties exceptional functionalities that surpass those individual components. Utilizing micelle assemblies for constructing segments allows precise structural control but requires management interactions assembly from molecular to mesoscopic levels, posing a significant challenge. In this paper, we present stepwise self-assembly strategy fabricate...

10.1021/jacs.5c05154 article EN Journal of the American Chemical Society 2025-04-24
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