Liwei Cheng

ORCID: 0000-0001-8243-4088
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About
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Research Areas
  • Spectroscopy and Laser Applications
  • Advanced Battery Materials and Technologies
  • Crystallization and Solubility Studies
  • Silicon and Solar Cell Technologies
  • Semiconductor materials and devices
  • Advancements in Battery Materials
  • Advanced battery technologies research
  • Advancements in Semiconductor Devices and Circuit Design
  • Laser Design and Applications
  • Atmospheric Ozone and Climate
  • Semiconductor materials and interfaces
  • Perovskite Materials and Applications
  • Semiconductor Lasers and Optical Devices
  • Radioactive element chemistry and processing
  • X-ray Diffraction in Crystallography
  • Advanced Battery Technologies Research
  • Atmospheric and Environmental Gas Dynamics
  • Thin-Film Transistor Technologies
  • Metal-Organic Frameworks: Synthesis and Applications
  • Analytical Chemistry and Sensors
  • Ferroelectric and Negative Capacitance Devices
  • Lanthanide and Transition Metal Complexes
  • Semiconductor Quantum Structures and Devices
  • Silicon Nanostructures and Photoluminescence
  • Integrated Circuits and Semiconductor Failure Analysis

Beihang University
2017-2024

Soochow University
2019-2024

Chinese Academy of Sciences
2020-2023

Shanghai Advanced Research Institute
2022-2023

Shanghai Institute of Applied Physics
2020-2023

National Cheng Kung University
2007-2023

University of Chinese Academy of Sciences
2020-2022

Suzhou Research Institute
2019-2021

Beijing University of Posts and Telecommunications
2021

National Chung Hsing University
2019

Alloying anodes are promising high-capacity electrode materials for K-ion batteries (KIBs). However, KIBs based on alloying suffer from rapid capacity decay due to the instability of K metal and large volume expansion anodes. Herein, effects salts solvents cycling stability a typical anode such as amorphous red phosphorus (RP) investigated, potassium bis(fluorosulfonyl)imide (KFSI) salt-based carbonate electrolyte is versatile achieve simultaneous stabilization RP electrodes highly stable...

10.1002/anie.201908607 article EN Angewandte Chemie International Edition 2019-09-04

Abstract In contrast to conventional batteries, anode-free configurations can extend cell-level energy densities closer the theoretical limit. However, realizing alkali metal plating/stripping on a bare current collector with high reversibility is challenging, especially at low temperature, as an unstable solid-electrolyte interphase and uncontrolled dendrite growth occur more easily. Here, low-temperature potassium (K) non-aqueous battery reported. By introducing Si-O-based additives,...

10.1038/s41467-023-41778-6 article EN cc-by Nature Communications 2023-09-26

Understanding and controlling crystallization is crucial for high-quality perovskite films efficient solar cells. Herein, the issue of defects in formamidinium lead iodide (FAPbI3 ) formation addressed, focusing on role intermediates. A comprehensive picture structural carrier evolution during demonstrated using situ grazing-incidence wide-angle X-ray scattering, ultraviolet-visible spectroscopy photoluminescence spectroscopy. Three stages are identified: precursors to δ-FAPbI3 intermediate,...

10.1002/adma.202305314 article EN Advanced Materials 2023-08-31

Abstract High‐power‐density rechargeable batteries are highly indispensable for power‐intensive application scenarios, such as vehicle start‐stop system and grid‐level frequency regulation. However, realizing high‐power‐density alkali‐ion is challenging especially at low temperatures, undesirable alkali metal plating tends to occur more easily on the anode surface due increased electrochemical impedance polarization. Herein, a low‐temperature, Na 3 V 2 (PO 4 ) ||hard carbon (HC) sodium‐ion...

10.1002/adfm.202315498 article EN Advanced Functional Materials 2024-02-25

A facile hydrothermal method was used to synthesize luminescent carbon dots from single-walled nanotubes (SWNTs). Then 4,7,10-trioxa-1,13-tridecanediamine (TTDDA) grafted onto the increase their water solubility and properties. The as-prepared were characterized by UV-Vis absorption, infrared (IR), Raman, fluorescence, transmission electron microscopy (TEM). results confirmed that these monodispersed in emitted bright yellow fluorescence. surface modified label biological cells, images...

10.1039/c3nj00366c article EN New Journal of Chemistry 2013-01-01

Currently, exploring high-volumetric-capacity electrode materials that allow for reversible (de-)insertion of large-size K+ ions remains challenging. Tellurium (Te) is a promising alternative storage due to its high volumetric capacity, confirmed in lithium-/sodium-ion batteries, and the intrinsic good electronic conductivity. However, charge capability mechanism Te potassium-ion batteries (KIBs) have not been unveiled until now. Here, novel K-Te battery constructed, -ion revealed be...

10.1002/adma.201908027 article EN Advanced Materials 2020-04-30

The potential applications of metal–organic cages (MOCs) are mostly achieved through specific host–guest interactions within their cavities. Electronic would require an effective electron transport pathway, which has been extensively studied in hybrid organic–inorganic materials with extended structures. These properties have not considered for MOCs because cage-to-cage these rarely examined and challenging to functionalize. We report here a previously unobserved actinide-based MOC assembled...

10.1021/jacs.0c08117 article EN Journal of the American Chemical Society 2020-09-03

Graphite is useful as a low-cost and high-voltage cathode of dual-ion batteries (DIBs) to allow anion (de-)intercalation, yet its practical applications are hindered by low Coulombic efficiencies (CEs) poor cyclability. Meanwhile, the solvation behavior anions impact on interphase chemistry have not been well clarified. Herein, fluorinated co-solvent-modified electrolyte proposed for graphite cathodes in sodium-based DIBs. The introduced composition participates Na+ cations PF6̅ anions....

10.1021/acsenergylett.1c00043 article EN ACS Energy Letters 2021-02-12

Abstract Aqueous zinc‐ion batteries (ZIBs) are a promising candidate for fast‐charging energy‐storage systems due to its attractive ionic conductivity of water‐based electrolyte, high theoretical energy density, and low cost. Current strategies toward high‐rate ZIBs mainly focus on the improvement or electron within cathodes. However, enhancing intrinsic electrochemical reaction kinetics active materials achieve fast Zn 2+ storage has been greatly omitted. Herein, first time, stable radical...

10.1002/adfm.202102011 article EN Advanced Functional Materials 2021-06-13

Exciton behaviors including exciton formation and dissociation dynamics play an essential role in the optoelectronic performance of semiconductive materials but remain unexplored metal-organic frameworks (MOFs). Herein, we reveal that MOFs can be regulated by framework-guest interactions, a feature often not achievable traditional inorganic or organic semiconductors. Incorporation electron-deficient molecule within pores terbium-based MOF (Tb2L2·4H2O·6DMF, L = TATAB3-,...

10.1021/jacs.1c11150 article EN Journal of the American Chemical Society 2022-01-24

Reliable power supplies at extremely high temperatures are urgently needed to broaden the application scenarios for electric devices. Aqueous zinc metal batteries (ZMBs) with intrinsic safety a promising alterative high-temperature energy storage. However, reversibility and long-term cycling stability of aqueous ZMBs (≥100 °C) have rarely been explored. Herein, we reveal that spontaneous Zn corrosion severe electrochemical hydrogen evolution temperature vital restrictions traditional ZMBs....

10.1021/acsnano.2c04114 article EN ACS Nano 2022-09-06

Zn anode is confronted with serious dendrite growth and water-induced parasitic reactions, which severely hinders the rapid development practical application of aqueous zinc metal batteries (AZMBs). Herein, inspired by sodium hyaluronate (SH) biomolecules in living organisms featured functions water retention, ion-transport regulation, film-formation, SH working as a dynamic self-adaptive "mask" proposed to stabilize anode. Benefiting from abundant functional groups high hydrophilicity...

10.1002/smll.202202214 article EN Small 2022-05-27

Graphite (Gr) has been considered as the most promising anode material for potassium-ion batteries (PIBs) commercialization due to its high theoretical specific capacity and low cost. However, Gr-based PIBs remain unfeasible at temperature (LT), suffering from either poor kinetics based on conventional carbonate electrolytes or K

10.1002/anie.202315624 article EN Angewandte Chemie International Edition 2023-12-28

High-energy radiation that is compatible with renewable energy sources enables direct H2 production from water for fuels; however, the challenge to convert it as efficiently possible, and existing strategies have limited success. Herein, we report use of Zr/Hf-based nanoscale UiO-66 metal-organic frameworks highly effective stable sensitizers purified natural splitting under γ-ray irradiation. Scavenging pulse radiolysis experiments Monte Carlo simulations show combination 3D arrays...

10.1021/jacs.3c00547 article EN Journal of the American Chemical Society 2023-02-22

Abstract Smooth perovskite film with high crystallinity and vertical orientation is highly favored for high‐performance quasi‐2D solar cells (PVSCs), yet limited by the critical balance between nucleation crystal growth. To address this issue, here a fast solidification slow growth (FSSG) strategy developed to effectively optimize morphology. The enables smooth, pinhole‐free film, while allows it further ripen into high‐crystallinity film. This process enabled low‐boiling point solvent...

10.1002/aenm.202300168 article EN Advanced Energy Materials 2023-03-20

Room temperature spasing of surface plasmon polaritons at 1.46 μm wavelength has been demonstrated by sandwiching a gold-film plasmonic waveguide between optically pumped InGaAs quantum-well gain media. The spaser exhibits narrowing, the expected transverse-magnetic polarization, and mirror feedback provided cleaved facets in 1-mm long cavity fabricated with flip-chip approach. 1.06-μm pump-threshold ~60 kW/cm2 is good agreement calculations. architecture readily adaptable to all-electrical...

10.1364/oe.19.008954 article EN cc-by Optics Express 2011-04-22

Rapid and efficient detection of cancer cells at their earliest stages is one the central challenges in diagnostics. We developed a simple, cost-effective, highly sensitive colorimetric method for visually detecting rare based on cell-triggered cyclic enzymatic signal amplification (CTCESA). In absence target cells, hairpin aptamer probes (HAPs) linker DNAs stably coexist solution, DNA assembles DNA-AuNPs, producing purple solution. presence specific binding HAPs to triggers conformational...

10.1021/ac501068k article EN Analytical Chemistry 2014-05-12

Rapid and efficient measurement of cancer cells is a major challenge in early diagnosis. In the present study, miniature multiplex chip was created for situ detection by implementing novel graphene oxide (GO)-based Förster resonance energy transfer (FRET) biosensor strategy, i.e. assaying cell-induced fluorescence recovery from dye-labeled aptamer/graphene complex. Fluorescence intensity image analyses demonstrated that this microfluidic biosensing method exhibited rapid, selective sensitive...

10.1039/c2lc40564d article EN Lab on a Chip 2012-01-01

Abstract We disclose the intrinsic semiconducting properties of one largest mixed‐valent uranium clusters, [H 3 O + ][U V (U VI 2 ) 8 (μ ‐O) 6 (PhCOO) (Py(CH O) 4 (DMF) ] (Ph=phenyl, Py=pyridyl, DMF=N,N‐dimethylformamide) ( 1 ). Single‐crystal X‐ray crystallography demonstrates that U center is stabilized within a tetraoxo core surrounded by eight uranyl(VI) pentagonal bipyramidal centers. The oxidation states are substantiated spectroscopic data and magnetic susceptibility measurement....

10.1002/anie.202017298 article EN Angewandte Chemie International Edition 2021-02-17
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