Siyuan Chen

ORCID: 0009-0004-6201-0658
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About
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Research Areas
  • Advancements in Battery Materials
  • Advanced Battery Materials and Technologies
  • Boron and Carbon Nanomaterials Research
  • Quantum Dots Synthesis And Properties
  • Supercapacitor Materials and Fabrication
  • Carbon and Quantum Dots Applications
  • Energetic Materials and Combustion
  • Metal and Thin Film Mechanics
  • Advanced Electron Microscopy Techniques and Applications
  • Advanced Chemical Sensor Technologies
  • Gas Sensing Nanomaterials and Sensors
  • Graphene research and applications
  • Luminescence and Fluorescent Materials
  • Concrete Properties and Behavior
  • Advanced battery technologies research
  • Nanocluster Synthesis and Applications
  • Semiconductor materials and devices
  • Ultrasonics and Acoustic Wave Propagation
  • Transition Metal Oxide Nanomaterials
  • Ferroelectric and Piezoelectric Materials
  • Crystallography and molecular interactions
  • Advanced X-ray Imaging Techniques
  • X-ray Spectroscopy and Fluorescence Analysis
  • X-ray Diffraction in Crystallography
  • Geophysical Methods and Applications

University of Chicago
2025

Southern University of Science and Technology
2022-2024

South China University of Technology
2022

Nanjing University of Science and Technology
2021

Zhejiang University of Technology
2019-2020

University of Puerto Rico System
2015

We investigate the electronic properties of an exemplar transition metal impurity in insulator, with goal accurately describing strongly correlated, defect states. consider iron aluminum nitride, a material interest for hybrid quantum technologies, and we carry out calculations embedding methods -- density matrix theory (DMET) (QDET) spin-flip time-dependent functional (TDDFT). show that both DMET QDET describe ground state low-lying excited states defect, TDDFT yields photoluminescence...

10.48550/arxiv.2501.16280 preprint EN arXiv (Cornell University) 2025-01-27

We investigate the electronic properties of an exemplar transition metal impurity in insulator, with goal accurately describing strongly correlated defect states. consider iron aluminum nitride, a material interest for hybrid quantum technologies, and we carry out calculations embedding methods, density matrix theory (DMET) (QDET), spin-flip time-dependent functional (TDDFT). show that both DMET QDET describe ground state low-lying excited states TDDFT yields photoluminescence spectra...

10.1021/acs.jpclett.5c00287 article EN The Journal of Physical Chemistry Letters 2025-03-18

The all-nitrogen cyclo-pentazolate (c-N5–) anion has attracted considerable attention because of its potential applications in high-energy density materials. However, achieving comprehensive insight into the chemical properties c-N5– is challenging complex behavior. To elucidate this behavior, we stabilized by forming triaminoguanidinium (1) and 4-nitro-(3,4-diamino-1,2,4-triazolium-5-yl)-1H-pyrazolium (2) salts cocrystal (3) a 1:1 ratio 3,3-dinitroazetidinium pentazolate to...

10.1021/acs.cgd.1c00185 article EN Crystal Growth & Design 2021-07-20

We report the results of composite tungsten oxide nanowires-based gas sensors. The morphologic surface, crystallographic structures, and chemical compositions obtained nanowires have been investigated using scanning electron microscopy (SEM), X-ray diffraction (XRD), Raman scattering, respectively. experimental measurements reveal that each wire consists crystalline nanoparticles with an average diameter less than 250 nm. By synthesized nanowires, highly sensitive prototypic sensors designed...

10.3390/s151027035 article EN cc-by Sensors 2015-10-23

Ni-rich layered transition metal oxides are promising cathodes for Li-ion batteries due to their low cost and high theoretical capacity. However, practical applications hindered by the capacity fading caused intrinsic lattice structure variations, such as changes in atom arrangement valence. In situ neutron powder diffraction is a powerful technique studying of battery materials expected provide more information than other techniques its nondestructive, high-resolution, light-element probing...

10.1021/acsaem.3c00482 article EN ACS Applied Energy Materials 2023-06-08

Nano-sized spinel LiMn2O4/carbon nanotubes (LMO/CNTs) composite is facilely synthesized via a one-step dynamic hydrothermal approach. The characterizations and electrochemical measurements reveal that LiMn2O4 particles with narrow size distribution are well dispersed CNTs in the composite. LMO/CNTs nanocomposite 5 wt % displays high specific discharge capacity of 114 mAh g−1 at 1C rate, retention rate after 180 cycles room temperature reaches 94.5% potential window 3.3 to 4.3 V vs. Li/Li+....

10.3390/ma12244123 article EN Materials 2019-12-09

In this study, we investigated the polarization characteristics of nitrogen-doped carbon quantum dots (CQDs) and their correlation with nitrogen doping levels through experimental theoretical approach. We compared low high dots, discovered that increasing content, lattice dimensions CQDs decrease, while anisotropy becomes more distinct. These changes result in significant variations phase. Furthermore, introduction dopants influences fluorescence emission properties as well hybridization...

10.2139/ssrn.4641709 preprint EN 2023-01-01

10.1016/j.nima.2022.168006 article EN Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 2022-12-29
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