Yayun Zheng

ORCID: 0000-0003-1036-7650
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Research Areas
  • Advancements in Battery Materials
  • Supercapacitor Materials and Fabrication
  • Advanced Battery Materials and Technologies
  • Advanced battery technologies research
  • Membrane Separation and Gas Transport
  • Covalent Organic Framework Applications
  • Advanced Battery Technologies Research
  • MXene and MAX Phase Materials
  • Electrocatalysts for Energy Conversion
  • Carbon and Quantum Dots Applications
  • Advanced Photocatalysis Techniques
  • Chemical Synthesis and Characterization
  • Asymmetric Synthesis and Catalysis
  • Fuel Cells and Related Materials
  • Nanocluster Synthesis and Applications
  • Chemical Synthesis and Reactions
  • Nanomaterials for catalytic reactions
  • Synthesis and properties of polymers
  • Graphene research and applications
  • Catalytic Processes in Materials Science
  • Oxidative Organic Chemistry Reactions
  • Biopolymer Synthesis and Applications
  • Synthesis and Catalytic Reactions
  • Marine Biology and Environmental Chemistry
  • nanoparticles nucleation surface interactions

Ningbo University of Technology
2024-2025

Northeast Agricultural University
2025

Wuhan University
2022-2024

National Kaohsiung University of Science and Technology
2021-2024

University of Science and Technology
2024

National Kaohsiung Marine University
2021-2023

Kyoto University
2021-2022

Taiyuan University of Technology
2018-2020

Zhejiang University of Technology
2018-2019

Chemical Synthesis Lab
2018-2019

Herein, we present an ultrafast microwave approach for fabricating MoS<sub>2</sub>/MoO<sub>2</sub>@CNT nanocomposites toward supercapacitor electrodes with excellent cycle stability.

10.1039/c9tc02391g article EN Journal of Materials Chemistry C 2019-01-01

Abstract Waste tyres (WTs) are a major global issue that needs immediate attention to ensure sustainable environment. They often dumped in landfills or incinerated open environments, which leads environmental pollution. However, various thermochemical conversion methods have shown promising results as treatment routes tackle the WT problem while creating new materials for industries. One such material is char, has properties comparable those of carbon used an active electrode batteries....

10.1002/cey2.571 article EN cc-by Carbon Energy 2024-06-07

CuCo<sub>2</sub>O<sub>4</sub>@CuCo<sub>2</sub>O<sub>4</sub> hierarchical nanowire arrays were fabricated directly on Ni foam <italic>via</italic> a two-step method. The binder-free electrode displayed high electrochemical performance with excellent cycling stability.

10.1039/c6ra25970g article EN cc-by-nc RSC Advances 2017-01-01

Core-shell-structured system has been proved as one of the best architecture for clean energy products owing to its inherited superiorities from both core and shell part, which can provide better conductivity high surface area. Herein, a hierarchical core-shell NiCo2S4@NiMoO4 heterostructure nanotube array on Ni foam (NF) (NiCo2S4@NiMoO4/NF) successfully fabricated. Because novel heterostructure, capacitive performance enhanced. A specific capacitance up 2006 F g-1 was obtained at current...

10.1186/s11671-017-2180-z article EN cc-by Nanoscale Research Letters 2017-06-15

A crystalline Ti2O1.3(PO4)1.6/TiO2 carbon-coated composite was synthesized by a glucose-modified hydrothermal method. It shows the highest reversible capacities, excellent rate properties and remarkable cycling performances compared to its counterpart prepared without glucose modification, particularly maintaining capacity of 233.9 mA h g-1 after 200 cycles at 1000 g-1.

10.1039/d3cc04633h article EN Chemical Communications 2023-01-01

To make sodium-ion batteries a realistic option for everyday energy storage, practicable method is to enhance the kinetics of Na+ reactions through development structurally stable electrode materials. This study utilizes ternary Sn-based dichalcogenide (SnS1.5 Se0.5 ) in design material tackle several issues that adversely hinder performance and longevity batteries. First, incorporation Se into SnS structure enhances its electrical conductivity stability. Second, composition restricts...

10.1002/smll.202303746 article EN Small 2023-07-24

Abstract A simple carbon black (Ketjenblack, KB)‐multiwall nanotubes (MWCNTs) composite was fabricated and used as the air cathode in a Li‐O 2 battery where MWCNTs primarily serve microscopic cables to enhance long‐range electronic conductivity. With optimal KB:MWCNTs mass ratios, exhibited significantly improved specific capacity (up 10611 mAh/g under 100 ), rate capability 9598 500 ) cyclability than pristine KB, owing synergy of KB's abundant surface area for accommodation discharge...

10.1002/celc.202400626 article EN cc-by ChemElectroChem 2025-02-14

Ionic liquids based on imidazolium cations have attracted attention due to their high safety and exceptional ionic conductivity. However, imidazole-based exhibit poor electrochemical stability the strong reactivity of hydrogen atoms at C-2 position imidazole cations. In this work, an liquid 1-butyl-2,3-dimethylimidazolium bis(trifluoromethanesulfonyl)imide ([C4C1mim][TFSA]), characterized by a methyl-substituted butyl chain, was investigated in various Li+ environments created different...

10.3390/appliedchem5010006 article EN cc-by AppliedChem 2025-03-06

Three-dimensional interconnected CuS nanowalls with rough surfaces on Ni foam were obtained through a facial ​ synthetic route. The binder-free electrode exhibits high electrochemical performance excellent cycling stability.

10.1039/c6ra10327h article EN RSC Advances 2016-01-01

CoFe alloy nanoparticles (NPs) encapsulated in a three-dimensional (3D) honeycomb-like porous N-doped graphitic carbon (CoFe/N-GC) framework were fabricated by facile polymer thermal treatment method.

10.1039/d2ta06088d article EN Journal of Materials Chemistry A 2022-01-01

Graphene quantum dots, carbon nanomaterials with excellent fluorescence characteristics, are advantageous for use in biological systems owing to their small size, non-toxicity, and biocompatibility. We used the hydrothermal method prepare functional N-doped dots (N-CQDs) from 1,3,6-trinitropyrene analyzed ability fluorescently stain various bacteria. Our results showed that N-CQDs cell septa membrane of Gram-negative bacteria Escherichia coli, Salmonellaenteritidis, Vibrio parahaemolyticus...

10.3390/cryst11070789 article EN cc-by Crystals 2021-07-06

A series of new aromatic polyamides (PAs) and copolyamides (CPAs) containing fluorene group have been synthesized through polycondensation reaction. The chemical structure was confirmed by Fourier transform infrared proton nuclear magnetic resonance ( 1 H NMR). PAs CPAs exhibited the higher thermal stability T d15 &gt; 378°C in nitrogen), glass transition temperature g 345°C), excellent solubility polar solvent. Gas transport properties PA CPA membranes were investigated using different...

10.1177/0954008317732121 article EN High Performance Polymers 2017-09-25

Artificial photosynthesis is promising to convert solar energy and CO2 into valuable chemicals, alleviate the problems of greenhouse effect climate change crisis. Here, we fabricated a novel photocatalyst by directly growing Bi2MoO6 nanosheets on three-dimensional (3D) N,O-doped carbon (NO-C). Scanning electron microscopy (SEM) transmission (TEM) show that designed ensured close contact between NO-C, reduced stacking NO-C layers provide abundant channels for diffusion CO2, while can allow...

10.3390/nano13091569 article EN cc-by Nanomaterials 2023-05-06

The orthorhombic NaFeF3, which is envisioned to be an auspicious positive electrode for Na-ion batteries, has drawn considerable interest as environmentally benign energy material with exceptionally high theoretical capacity. Despite these prospects, the reaction mechanism(s) during NaFeF3 operations are still not well understood. Thus, in a bid expound on this research space, we report of carbon-coated prepared through high-energy ball-milling and heat treatment processes. A thermally...

10.1021/acsaem.2c02904 article EN ACS Applied Energy Materials 2022-10-31
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