IONICS
·
2023
·Vol. 29
·期 7
·2783-2791
·
IF 2.8
Xu Wengang,Xie Qizhen,Chen Xiaobo,Wu Mingjun,Zhang Jun,Ru Qiang
Aqueous zinc-ion batteries (AZIBs) are considered to be one of the potential alternatives for lithium-ion batteries. Vanadium-based oxides as cathode materials have aroused increasing attention because of their advantages, such as low cost and high specific capacity. But its rapid capacity decay prompted researchers to explore various modified techniques. Herein, an electrolyte modification strategy by introducing acid trisodium salt (EDTA-3Na) additive to 2 M ZnSO 4 solution is developed to stimulate high reversible zinc storage. The desolvation effect of EDTA-3Na in the electrolyte optimizes the zinc deposition behavior and inhibits the formation of zinc dendrites, which could reduce the resistance of the VO 2 //Zn full cells and accelerate the reaction kinetics of the cathode. The VO 2 //Zn full cells can present a high zinc storage capability of 281.5 mAh g −1 at a high current density of 5 A g −1 after 1000 cycles and deliver prominent rate performance of 403.6, 373.5, 343.1, and 297.6 mAh g −1 at 1, 2, 4, and 8 A g −1 respectively.
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IONICS
·
2018
·Vol. 25
·期 3
·1303-1313
·
IF 2.347
Fan Jiaxin,Xiao Qiangqiang,Fang Yaobing,Li Li,Yuan Wenhui
This work presents a Zn/graphite dual-ion battery using natural graphite as the cathode and metallic zinc as the anode, with ionic liquid-based electrolyte. Upon charge, the Zn 2+ cations deposit on the zinc anode, and the trifluoromethanesulfonate (TfO − ) anions simultaneously intercalate into the graphite cathode; upon discharge, both the ions are released back into the electrolyte. The 0.2 M Zn(TfO) 2 /EMImTfO ionic liquid-based electrolyte exhibits a high electrochemical window of 2.8 V (vs. Zn 2+ /Zn) as well as a high conductivity of 7.3 ms cm −1 . The deposition/stripping of zinc on a copper working electrode is systematically studied, which reveals that Zn 2+ cations are mobile in the ionic liquid electrolyte, and zinc can be deposited and stripped in this electrolyte. The insertion/extraction of TfO − into/from graphite is also investigated, demonstrating a reversible process. At a current of 0.2 mA cm −2 and within the voltage of 0.8–2.8 V, the Zn/graphite dual-ion cells exhibit a high sloping discharge plateau within 1.8–2.4 V (corresponding to a medium voltage of about 2.0 V), a discharge capacity of 33.7 mAh g −1 , and an energy density of 65.1 Wh kg −1 ; cells deliver a cyclability of 93.5% Coulombic efficiency for 100 cycles. The SEM image reveals that the zinc deposits are compact and dense, and uniformly distribute on anodes with an average grain size of about 200 nm, without the formation of dendrites. The use of high-safety electrolyte and low-cost electrode materials may enable this cell configuration to be a promising candidate for future energy storage systems.
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Journal of Materials Chemistry B
·
2025
·
IF 5.7
Jiale Zhang,Pengtao Chen,Jinlong Hu,Shuqing Wu,Yue Lin,Yao Lu,Junyu Xia,Jingcheng Wang,Jie Li,Yuan Liang
Implant-related infections (IRIs) pose a major challenge in orthopedic applications due to the persistence of biofilms, which are highly resistant to conventional antibiotics. This study introduces oxygen vacancy-engineered Zn–Fe spinel nanoparticles as microwave-responsive antibacterial agents. The oxygen vacancies in the spinel structure enhance reactive oxygen species (ROS) generation under microwave irradiation, providing a dual-mode antibacterial mechanism of thermal and oxidative stress. Zn–Fe spinel nanoparticles were synthesized using a sol–gel method and evaluated for their antibacterial efficacy against Staphylococcus aureus biofilms. Under microwave irradiation, the Zn–Fe spinel demonstrated significant biofilm disruption and bacterial eradication. Mechanistic studies revealed that oxygen vacancies promoted ROS generation, leading to bacterial membrane damage. In vivo experiments using a mouse infection model confirmed the material's antibacterial efficacy and biocompatibility, with no observed toxicity. This study highlights the potential of oxygen vacancy-enhanced Zn–Fe spinel as a microwave-assisted, antibiotic-free strategy for treating deep-seated infections associated with orthopedic implants.
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PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Haoxiang Wang,Yuyang He,Ruoyu Wang,Mengqi Lu,Yuting Luo,Yiwei Sun,Dongpo Xu
An electrochemical sensor with a dual recognition strategy was designed using molecularly imprinted polymers (MIPs) and boric acid for the highly sensitive detection of rutin. The synthesized metal-organic framework (MOFs) is combined with phenylboronic acid, which increases the recognition area of phenylboronic acid and its recognition ability towards adjacent diol compounds. Meanwhile, the molecularly imprinted polymer (MIP) provides specific recognition for rutin. The dual recognition strategy is widely adopted in sensors, enhancing the specificity of the imprinted cavity and effectively addressing the influence of interfering substances in complex matrices. After optimizing the experimental parameters, the detection range of this sensor is from 1 nM to 200 nM, and the limit of detection is 0.43 nM, indicating that this sensor has high potential for practical applications.
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JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Jing Zhang,Chenxiao Han,Lu Pan,Mannan Yang,Caiyin You,Yongzheng Zhang,Lujie Jia,Huihua Li,Ke Xu,Jian Su,Hongzhen Lin,Jian Wang
Aqueous zinc metal batteries (AZMBs) are promising for large-scale energy storage due to their intrinsic safety and cost effectiveness. However, the cycling stability of metallic Zn anode under low temperature surroundings is severely hindered by harmful hydrogen evolution reaction (HER) and uncontrollable dendrite growth, which is ascribed to sluggish desolvation kinetics of hydrated [Zn(H 2 O) x ] 2+ and blocked Zn 2+ diffusion kinetics. Herein, the strategy of “adsorption-sieving-catalysis” is initially proposed and the titanium nitride anchored on self-assembly porous reduced graphene oxide (TiN@RGO) as functional modulator is constructed on the surface of Zn anode. The abundant electrocatalytic sites on sieving pores significantly enhance interfacial desolvation, thereby accelerating Zn 2+ diffusion kinetics for dendrite-free plating. Consequently, TiN@RGO modified Zn delivers a long-term stripping/plating lifespan above 2600 h at 0.5 mA cm −2 and maintains reversible stability of 500 h at 2 mA cm −2 even under low temperature of 0 °C. Decreasing to as low as −8 °C, stable overpotential around 130 mV without any short-circuit is achieved. The coupled full cell with MnO 2 presents a high capacity retention of 72 % after 1000 cycles at 1.0 A g −1 at low temperature of 0 °C, providing new insights for the rational design of efficient LT-AZMBs.
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ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Li Zhang,Haixia Zhang,Yuxi Sun,Jingyi Ding,Yubo Jiang,Yang Yang,Chuangang Yao
Solid oxide fuel cells (SOFCs) have garnered significant attention due to their high efficiency and pollution-free characteristics. The performance of SOFCs is critically dependent on the development of highly active and stable cathode materials. This study reports Zn-doped Pr0.5Ba0.5Fe0.9Zn0.1O3−δ (PBFZ) as a novel high-performance perovskite cathode material. Experimental results demonstrate that introducing a minor quantity of Zn into the B-site of the Pr0.5Ba0.5FeO3−δ (PBF) significantly increases the oxygen vacancy concentration, accelerates cathodic oxygen reduction (ORR) kinetics, and enhances tolerance to CO2, thereby leading to superior electrochemical performance. Tests revealed that a full cell employing PBFZ as the cathode achieved exhibiting a peak power density (PPD) of 762.9 mW cm–2 at 800 °C under fuel cell operation, representing an approximately 40% improvement compared to the PBF material. Furthermore, under CO2 electrolysis mode (800 °C, 1.5 V), a current density of 1.33 A cm–2 is achieved by the cell. These results highlight the potential of PBFZ as a viable cathode material applicable to both SOFCs and SOECs.
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ChemSusChem
·
2025
·
IF 6.6
Yuchao Chen,Fangfang Wu,Yulong Chen,Dongshu Liu,Junkang Zhang,Pu Wang,Yancong Feng,Wenxian Liu,Tianqi Deng,Wenhui Shi,Xiehong Cao
Aqueous zinc-ion batteries (AZIBs) offer significant promise for large-scale applications due to their low cost,high safety,and sustainability,prompting researchers to address the key issues of zinc dendrite formation,anode side reactions, and cathode dissolution.Despite most current research focusing on optimizing either the anode or the cathode, achieving coordinated improvements in both electrodes is crucial for fully realizing the potential of zinc-ion batteries (ZIBs), and remains a significant challenge due to the complexity involved in balancing the performance of both electrodes. Herein, we propose a sacrificial agent-promoted protective strategy that enhances the performance of both the anode and cathode simultaneously. Specifically, the mercapto-containing sacrificial agent adsorbs on the Zn anode, localizing electrons around the thiol group to trigger an in-situ transformation reaction. This reaction forms a modulation layer that optimizes Zn2+ deposition. Concurrently, the agent promotes the formation of a protective MnO2 nanoparticle shell to reduce cathode dissolution. This strategy significantly enhances the cycling stability of both the Zn||Zn and MnO2||Zn cells, achieving 4.5 and 3 times longer performance,respectively,compared to those in ZnSO4 electrolyte.This work presents a simple and efficient dual-function approach that simultaneously stabilizes the Zn anode and suppresses Mn-based cathode dissolution, offering a promising pathway for the practical development of AZIBs.
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PubMed
高影响因子
Nanomaterials
·
2025
·Vol. 15
·期 23
·1777
·
IF 4.3
Haihong Zhao,Lei Li,Jiaxin Li,Feiqi Yan,Wenhao Wang,Mingxia Zhao
In this work, a novel mixed-component bimetallic metal–organic framework (MOF) composite material was synthesized via a solvothermal approach, and its structural and textural properties were systematically characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), N2adsorption/desorption analysis, and transmission electron microscopy (TEM). Furthermore, the single-component adsorption isotherms of CO2and N2were experimentally measured and fitted to the Langmuir–Freundlich model. The CO2/N2selectivity of the composite was evaluated based on the ideal adsorption solution theory (IAST). The results demonstrated that the addition of Zn2+significantly enhanced the specific surface area and improved the CO2adsorption capacity (3.97 mmol/g at 35 °C and 1 bar), with an increase of 31.5% in comparison with the Cu-BTC/MCFs (3.02 mmol/g). Meanwhile, the Zn-Cu-BTC/MCFs had good recyclability and CO2/N2selectivity up to 12.5 determined via IAST (CO2:N2= 85:15).
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ACS Applied Nano Materials
·
2025
·
IF 5.5
Jian Chen,Huili Liu,Jing Zhang,Mengmeng Hou,Haojie Cheng,Jiaman Wu,Shouren Zhang,Baocheng Yang
Excessive ultraviolet (UV) exposure from sunlight has brought serious threats to human health. Due to their excellent UV absorption and antioxidant properties, natural polyphenols have emerged as green UV filters to replace commercial sunscreens which have alarming biosafety and serious damage to marine environments. However, the commercial application of polyphenols is greatly limited by their narrow wavelength absorption, long-term instability, and deep skin penetration. Herein, broadband UV filters with good antioxidant ability and high security were developed by coordination assembly of gallic acid and Zn2+ with combination of polyvinylpyrrolidone (PVP) (Zn-GA-PVP NPs). Owing to the π–π stacking interaction, ligand-to-metal charge transfer, and the carambola-like morphology, the UV shielding range of Zn-GA-PVP NPs is broadened to entire UVA and UVB region through both absorption and reflection of UV rays. The antioxidant ability of Zn-GA-PVP NPs is protected by PVP, which guarantees that they will negatively generate but effectively scavenge reactive oxygen species upon UV exposure. The abundant phenolic hydroxyl groups and proper particle size allow Zn-GA-PVP NPs to have strong skin adhesion but not to penetrate into the deep skin. Meanwhile, Zn-GA-PVP NPs also show good water resistance and easy mechanical removal because of the amphipathy of PVP. Zn-GA-PVP NPs exhibit a high UV protection effect and good biosafety in a photodamage mouse model. This study provides a promising approach for modifying natural polyphenols to better suit their use in commercial sunscreens.
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CHEMISTRY-A EUROPEAN JOURNAL
·
2022
·Vol. 29
·期 10
·e202202950
·
IF 5.02
Jinyun Liu,Yajun Zhu,Tianli Han,Huigang Zhang,Chaoquan Hu,Junjie Niu
A foldable battery with high flexibility provides great potential in various wearable electronic devices for health and fitness tracking, chronic disease management, performance monitoring, navigation tracking, and portable gears for soldiers. We report a highly flexible, self-healing Zn-ion battery with a free-standing cathode that is composed of a 3D gear-like NH 4 V 4 O 10 @C composite on carbon paper. The battery retained a capacity of up to 102.4 mAh g −1 even after being folded 60 times with a high angle of 180°. An aqueous hydrogel consisting polyvinyl alcohol, glycerin and Zn(CF 3 SO 3 ) 2 was used as electrolyte, which showed as high as 580 % tensile strain under a loading weight of 78 N. The battery exhibited a better capacity retention of over 100 mAh g −1 and Coulombic efficiency of over 99.8 % after cutting and twisting to 90°, thereby indicating a great self-healing performance. The gear-like geometry greatly improved the volume accommodation due to the increased interval space between the blades and the outward configuration. Meanwhile the Zn 2+ ionic conductivity was improved by rapid re-binding of many existing hydroxy groups from the electrolyte and the enhanced contact surface area and diffusion route from the cathode material. The highly flexible, safe aqueous Zn-ion battery opens a practical way to power various carry-on electronics under mechanical agitation. Graphical Gearing up for portable devices : A flexible, self-healing Zn-ion battery uses a freestanding cathode that is composed of a 3D gear-like NH 4 V 4 O 10 @C composite on carbon paper. The battery retained a capacity of over 102.4 mAh g −1 after being folded 60 times with a high angle of 180°, and a better capacity retention of >100 mAh g −1 after cutting and twisting to 90°. The highly flexible, safe, aqueous Zn-ion battery opens up a practical way to power various carry-on electronic devices.
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Scientific Reports
·
2017
·Vol. 7
·期 1
·1-11
·
IF 4.259
Wu Chuandong,Ma Kaka,Zhang Dalong,Wu Jialu,Xiong Shuya,Luo Guoqiang,Zhang Jian,Chen Fei,Shen Qiang,Zhang Lianmeng,Lavernia Enrique J.
To provide insight into precipitation phenomena in age-hardening Al-Zn-Mg(-Cu) matrix composites, an Al 7075 alloy composite reinforced with B 4 C particles was selected as a model system. The bulk composites were fabricated via plasma activated sintering and followed by a peak aged (T6) heat treatment. Two types of Al matrix zones were identified in the composite: (1) the regions in the vicinity of the matrix/reinforcement interface, defined as “matrix plastic zone” (MPZ) hereafter, and (2) the regions away from the matrix/reinforcement interface, simply defined as matrix hereafter. The precipitation behavior in the MPZ was characterized and compared to that in the matrix. The MPZ contained a high density of dislocations. The number density of GP zones in the MPZ is lower than that in the matrix while the average size of the GP zones in MPZ is coarser. In addition, semi-coherent platelet η′ precipitates were observed but only in the MPZ. The dislocations and the Al/B 4 C interfaces provide more heterogeneous nucleation sites for the η′ precipitates in the MPZ. The growth and coarsening of the η′ precipitates caused rapid depletion of Mg and Zn solute atoms in the MPZ.
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2023
·
IF 4.5
Yangyang Xie,Lei Zhou,Jian Li,Xuxia Zhang,Kejia Liu,Hui Zhang,Tao Qi
The zinc-cerium redox flow battery has great potential in the field of energy storage for the merits of high voltage and low cost. However, undesirable dendrites growth and insufficient active sites of Zn anode electrode remain a grand challenge to obtain a good reversibility and cycling stability. Herein, we propose a promising and universal method to stabilize Zn anode by modifying commercial graphite carbon felt with metal–organic framework derivative. Owing to the porous structure and rich active sites of heteroatom N and O introduced by metal–organic framework derivative, the modified carbon felts can effectively induce zinc uniformly nucleation and deposition. As a result, the carbon felt electrode modified with ZIF-8 derivative exhibits a lower overpotential than pristine carbon felt electrode. And it exhibits a high average energy efficient of 80.0 % at the current density of 20 mA cm −2 for 14 cycles, which is better than previous results of Zn-Ce redox flow battery. When modified with cobalt-base ZIF-67 derivative, the energy efficient can even reach up to 86.07 % in first cycle. This work offers a strategy in zinc-based redox flow battery research to improve the reversibility and cycling ability by introducing metal–organic framework derivative.
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