Jun Qi

ORCID: 0000-0003-0902-6613
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About
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Research Areas
  • Electrocatalysts for Energy Conversion
  • Advanced battery technologies research
  • Electrochemical Analysis and Applications
  • Process Optimization and Integration
  • Catalytic Processes in Materials Science
  • Ionic liquids properties and applications
  • Advanced Photocatalysis Techniques
  • Thermal and Kinetic Analysis
  • Solar-Powered Water Purification Methods
  • Advanced Control Systems Optimization
  • Fuel Cells and Related Materials
  • Phase Equilibria and Thermodynamics
  • Semiconductor materials and devices
  • Fluid Dynamics and Heat Transfer
  • Carbon Dioxide Capture Technologies
  • Fluid Dynamics and Mixing
  • Thermal Radiation and Cooling Technologies
  • Nanomaterials and Printing Technologies
  • Chemistry and Chemical Engineering
  • Chemical and Physical Properties in Aqueous Solutions
  • Membrane Separation and Gas Transport
  • Surface Modification and Superhydrophobicity
  • Solar Thermal and Photovoltaic Systems
  • Copper-based nanomaterials and applications
  • Crystallization and Solubility Studies

Sun Yat-sen University
2021-2024

Beijing University of Chemical Technology
2019-2024

National Synchrotron Radiation Laboratory
2024

University of Science and Technology of China
2024

Wilmington University
2024

DuPont (United States)
2024

Experimental Station
2024

Taiyuan University of Technology
2014

Abstract Tuning the surface topography of solar evaporators is significance for boosting light absorption and enhancing solar‐to‐vapor efficiency. Herein, a novel strategy to manipulate graphene oxide (GO) via electrostatic assembly coupled with in situ polymerizations aniline reported. The GO fully hybridized polyaniline (PANI) nanocone arrays, manifesting periodic structures highly foldable configurations. Additionally, PANI arrays tune chemistry retard redispersion into water, thus...

10.1002/adfm.202209207 article EN Advanced Functional Materials 2022-12-05

The formation of heterogeneous ternary azeotropes poses a serious challenge to the recovery diisopropyl ether (DIPE) and isopropyl alcohol (IPA) from industrial effluent. To reduce energy consumption rates improve process efficiency this energy-intensive separation process, three novel intensified configurations with pressure-swing heat integration are proposed, which include one improved extractive distillation (ED) strategy two azeotropic (HAD1 HAD2) schemes. A comprehensive evaluation...

10.1021/acs.iecr.9b03846 article EN Industrial & Engineering Chemistry Research 2019-10-24

CNTs that consist of Co nanoparticles and atomically-dispersed atoms efficiently generate hydrogen from AB at a rate 7833 mL H 2 g −1 min .

10.1039/d1ta09750d article EN Journal of Materials Chemistry A 2022-01-01

Abstract Oriented zinc (Zn) electrodeposition is critical for the long‐term performance of aqueous Zn metal batteries. However, intricate interfacial reactions between anode and electrolytes hinder a comprehensive understanding deposition. Here, reaction pathways deposition report preferential formation single‐crystalline nuclei followed by dense Zn(002) elucidated, which induced gradient solid‐electrolyte interphase (SEI). The SEI composed abundant B‐O C species facilitates faster 2+...

10.1002/adma.202412667 article EN Advanced Materials 2024-11-16

Water electrolysis in acid using a proton exchange membrane electrolyzer has been considered as promising technique for hydrogen production. Developing low-cost and high-performance OER catalysts is significant scale-up application of this technique. In work, we report facile electrochemical approach to synthesize thin iridium hydroxide nanosheets (denoted HxIrO3 NSs), which possess unique honeycomb structure on the surface, inherited from parent α-Li2IrO3 material. The obtained NSs show an...

10.1021/acsaem.2c00492 article EN ACS Applied Energy Materials 2022-05-25

To develop stable electrocatalysts for the oxygen evolution reaction (OER) in acid, it is essential to understand degradation mechanisms on catalyst surface. In this work, we compare OER performance of two Ni–Ir bimetallic oxides (Li2Ir1–xNixO3−δ with x = 0.25 and 0.75) sulfuric acid. A dynamic structure transformation observed LINO-0.25 due fast delithiation from layered structure. The resulting demonstrates ∼10 times enhanced electrochemical activity but 70% less Ir dissolution compared...

10.1021/acsaem.2c03300 article EN ACS Applied Energy Materials 2023-01-18

Even the most stable Ir-based oxides inevitably encounter a severe degradation problem during oxygen evolution reaction (OER) in acid, resulting quick formation of amorphous IrOx layers on catalyst surface. Unfortunately, there is still lack fundamental understanding such hydrous layers, including atomic arrangement, key active structure, compositions, chemical stability, and so on. In this work, we demonstrate an electrochemical strategy to prepare two types protonated iridium with...

10.1021/acsami.2c20131 article EN ACS Applied Materials & Interfaces 2023-03-17

The amorphous IrO x layer as formed by a dynamic dissolution–reprecipitation process is probed to serve protective for the catalyst during OER.

10.1039/d2qi02214a article EN Inorganic Chemistry Frontiers 2022-11-26

Many highly active catalysts for the oxygen evolution reaction (OER) demonstrate strong pH-dependent catalytic activities. However, exact mechanism behind this phenomenon is still a subject of debate. In study, delithiated Li0.5CoO2 utilized as model catalyst due to its tunable chemical states and layered structure that can facilitate reversible intercalation deintercalation cations. By increasing pH 14 using 1.0 M CsOH solution, rapid Cs+ cations water molecules induce notable lattice...

10.1021/acsmaterialslett.4c00413 article EN ACS Materials Letters 2024-05-10

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10.2139/ssrn.4751004 preprint EN 2024-01-01

N,N-Dimethylacetamide (DMAc) is routinely used in industry to produce fibers, adhesives, and pharmaceuticals often heated high temperatures (>160 °C, >330 °F). While there have been mentions of thermal decomposition toxic gas generation, the DMAc has not investigated detail. We use experimental modeling techniques identify temperature begins deviate from theoretical vapor pressure, quantify products, predict a generation rate. raise awareness pressure chemical hazards at with goal preventing...

10.1021/acs.iecr.4c01601 article EN Industrial & Engineering Chemistry Research 2024-07-02

A comprehensive understanding of the dynamic processes at catalyst/electrolyte interfaces is crucial for development advanced electrocatalysts oxygen evolution reaction (OER). However, chemical related to surface corrosion and catalyst degradation have not been well understood so far. In this study, we employ LiCoO 2 as a model observe distinct OER activities stabilities in different alkaline solutions. Operando X‐ray diffraction (XRD) online mass spectroscopy (OMS) measurements prove...

10.1002/eem2.12813 article EN cc-by Energy & environment materials 2024-08-01
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