Junxi Zhang

ORCID: 0000-0001-7055-8892
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About
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Research Areas
  • Advancements in Battery Materials
  • Corrosion Behavior and Inhibition
  • Advanced Battery Materials and Technologies
  • Supercapacitor Materials and Fabrication
  • Hydrogen embrittlement and corrosion behaviors in metals
  • Advanced Battery Technologies Research
  • Concrete Corrosion and Durability
  • Additive Manufacturing Materials and Processes
  • Extraction and Separation Processes
  • Titanium Alloys Microstructure and Properties
  • Magnetic Properties and Synthesis of Ferrites
  • Electrodeposition and Electroless Coatings
  • Anodic Oxide Films and Nanostructures
  • Electrochemical Analysis and Applications
  • Magnesium Alloys: Properties and Applications
  • Welding Techniques and Residual Stresses
  • Metal and Thin Film Mechanics
  • Advanced battery technologies research
  • Gas Sensing Nanomaterials and Sensors
  • Advanced Photocatalysis Techniques
  • Climate Change and Health Impacts
  • Additive Manufacturing and 3D Printing Technologies
  • Electrocatalysts for Energy Conversion
  • Mechanical stress and fatigue analysis
  • Conducting polymers and applications

Materials Processing (United States)
2025

Materials Science & Engineering
2025

Wuhan University of Technology
2025

Shanghai University of Electric Power
2015-2024

Dalian University
2024

Tongji University
2021-2023

Wuhan University
2023

Third Affiliated Hospital of Zhengzhou University
2023

City University of Hong Kong
2023

First Affiliated Hospital of Zhengzhou University
2023

In this study, we investigate the role played by a firm’s ownership structure in earnings management, with reference to Chinese capital market. We measure impacts of both concentration and different types, specifically difference between state as blockholder private blockholders. Analysing 273 privately‐owned state‐owned companies listed 2002, establish link firms’ management practices. Our results show that relationship measures exhibits statistically significant non‐linear, inverted...

10.1111/j.1467-8683.2007.00556.x article EN Corporate Governance An International Review 2007-03-01

Abstract Layered titanates (Na 2 Ti 3 O 7 ·nH O) with exchangeable sodium cations located in the interlayer have been synthesized by simple hydrothermal treatment of precursor concentrated NaOH solutions. By proper control synthesis conditions, different morphologies nanofibers and nanosheets are obtained. The metastable layered structure collapses during ion exchange, resulting irreversible exchange. Target (eg., Ag + , Cu 2+ Pb Eu 3+ ) completely from water then tightly immobilized which...

10.1002/adfm.201102272 article EN Advanced Functional Materials 2011-12-08

Ti-6Al-4V alloy produced by selective laser melting (SLM) was reported to exhibit an inferior corrosion resistance compared with the traditionally processed Grade 5 alloy, due formation of high-energy metastable α' martensite regard α martensite. This work manipulates transformation heat-treatment in SLM-produced and studies effect on its behavior using electrochemical tests microstructural analysis. The results reveal that heat-treated samples a higher rate than as-received counterparts....

10.1149/2.1481707jes article EN Journal of The Electrochemical Society 2017-01-01

Iron-based phosphate materials have been employed as cathodes for sodium-ion batteries (SIBs) because of their low cost and environmental friendliness, but the electrochemical performance this kind cathode is far from that a practical application. On one hand, huge volume expansion during insertion/extraction restricts its cycle life. other relativity capacity working potential result in energy density. Herein, we report new NASCION-phase iron-based material with formula Na3Fe2(PO4)(P2O7),...

10.1021/acsenergylett.0c01902 article EN ACS Energy Letters 2020-11-13

Sodium iron phosphate (Na3Fe2(PO4)3) as cathode material for sodium-ion batteries has been synthesized through a simple method of solid state reaction. It crystallizes in monoclinic structure the space group C2/c. The morphology as-prepared sample investigated by scanning electron microscopy and transmission microscopy. charge/discharge curves show very flat plateau at about 2.5 V (vs Na/Na+). initial specific discharge capacity is 61 mAh g–1 remains 57 after 500 cycles current rate 1 C....

10.1021/acssuschemeng.6b01536 article EN ACS Sustainable Chemistry & Engineering 2016-12-14

Distinct corrosion behavior was reported in multiphased titanium alloys prepared by additive manufacturing and traditional technologies because of different phase constituents formed during processing. An open question is therefore raised: there always materials methods? This work reports resemble selective laser melted wrought single β-phase Ti-24Nb-4Zr-8Sn (Ti2448) both NaCl solution Hank's solution. The electrochemical measurements showed that samples have close calculated polarization...

10.1021/acsbiomaterials.8b01341 article EN ACS Biomaterials Science & Engineering 2018-12-19

This paper reviews the NTIRE 2023 challenge on efficient single-image super-resolution with a focus proposed solutions and results. The aim of this is to devise network that reduces one or several aspects such as runtime, parameters, FLOPs, activations, memory footprint, depth RFDN while at least maintaining PSNR 29.00dB DIV2K validation datasets. had 272 registered participants, 35 teams made valid submissions. They gauge state-of-the-art for super-resolution.

10.1109/cvprw59228.2023.00189 article EN 2022 IEEE/CVF Conference on Computer Vision and Pattern Recognition Workshops (CVPRW) 2023-06-01

Green hydrogen production with water splitting devices, especially a proton exchange membrane electrolyzer (PEMWE), has received extensive attention. However, the sluggish kinetics of oxygen evolution reaction (OER) still hinders its large-scale commercial application. Designing high-performance and low-cost electrocatalysts to drive OER remains tough challenge. The active nanoparticles incorporating metal oxide support is considered promising strategy improve durability activity in acidic...

10.1021/acssuschemeng.3c01881 article EN ACS Sustainable Chemistry & Engineering 2023-06-12

Phosphate-pyrophosphate iron sodium (Na4Fe3(PO4)2P2O7, denoted NFPP) is a viable cathode material for sodium-ion batteries (SIBs) due to its low cost, environmental friendliness, and high structural stability. However, the limiting factors cycle stability rate capabilities are attributed mobility insufficient electronic conductivity of Na ions. In this work, vanadium (V)-doped NFPP, nanoproducts with carbon layer encapsulation, prepared by spray-drying method. After optimizing doping amount...

10.1021/acssuschemeng.4c00387 article EN ACS Sustainable Chemistry & Engineering 2024-03-19

The iron-based mixed-polyanionic cathode Na4Fe3(PO4)2(P2O7) (referred to as N4FP) has gained significant attention an ideal candidate for commercial sodium-ion batteries (SIBs). Its advantages, such cost-effectiveness, environmental friendliness, and excellent structural stability, make it highly attractive. However, the practical specific capacity of N4FP (approximately 100 mA h g–1) tends fall short its theoretical (129 g–1), resulting in a relatively low energy density at cell level. This...

10.1021/acssuschemeng.3c07367 article EN ACS Sustainable Chemistry & Engineering 2024-01-04

Coatings with only passive protection cannot offer long-term anticorrosion on metals. Eco-friendly sustainable and responsive coating for active/passive corrosion is desirable to extend the service life of Here, benzotriazole (BTA)-metal organic frameworks (Cu-MOFs, UiO-66) were embedded in silica (SiO2) by one-step electrodeposition copper. Combined capability MOFs active BTA inhibitor, composite (BTA-MOF/SiO2) exhibited high stable resistance, confirmed microstructure characterizations...

10.1021/acs.langmuir.4c00328 article EN Langmuir 2024-03-29

Abundant flake-porous Na3Fe2(PO4)3 has been prepared via a simple spray drying method. As cathode material in sodium-ion batteries (SIBs), the galvanostatic charge/discharge test results indicate that initial reversible discharge specific capacity of electrode can reach to 100.8 mAh g–1 (about 93% theoretical 105 g–1) under current density 10 mA (0.1 C) and high rate capability at 500 (5 is up 60 after 1100 cycles. The situ X-ray diffraction pattern ex photoelectron spectroscopy processes...

10.1021/acssuschemeng.9b05098 article EN ACS Sustainable Chemistry & Engineering 2019-12-18
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