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Enhanced dynamics of Al3+/H+ ions in aqueous aluminum ion batteries:Construction of metastable structures in vanadium pentoxide upon oxygen vacancies

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Journal of Energy Chemistry 2025年第2期101卷 562-569页

作者： Zhibao Wang Hanqing Gu Tianci Wu Wenming Zhang Zhanyu Li Hebei Key Laboratory of Optic-Electronic Information and Materials National & Local Joint Engineering Laboratory of New Energy Photoelectric Devices College of Physics Science and Technology Hebei University

In recent years,aqueous aluminum ion batteries have been widely studied owing to their abundant energy storage and high theo retical *** in-depth study of vanadium oxide materials is necessary to address the precipitation of insoluble products covered cathode surface and the slow reaction ***,a method using a simple one-step hydrothermal preparation and oxalic acid to regulate oxygen vacancies has been reported.A high starting capacity(400 mAh g-1) can be achieved by Ov-V2O5,and it is capable of undergoing 200 cycles at 0.4 A g-1,with a termination discharge capacity of103 mAh *** analysis demonstrated that metastable structures（AlxV2O5and HxV2O5） were constructed through the insertion of Al3+/H+during discharging,which existed in the lattice intercalation with *** incorporation of oxygen vacancies lowers the reaction energy barrier while improving the ion transport *** addition,the metastable structure allows the electrostatic interaction between Al3+and the main backbone to establish protection and optimize the transport *** parallel,this work exploits ex-situ characterization and DFT to obtain a profound insight into the instrumental effect of oxygen vacancies in the construction of metastable structures during in-situ electrochemical activation,with a view to better understanding the mechanism of the synergistic participation of Al3+and H+in the *** work not only reports a method for cathode materials to modulate oxygen vacancies,but also lays the foundation for a deeper understanding of the metastable structure of vanadium oxides.

关键词： Electrochemical activation Metastable structure Oxygen vacancies vanadium pentoxide

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Facile Synthesis,Characterization of Flower-Like vanadium pentoxide Powders and Their Photocatalytic Behavior

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Acta Metallurgica Sinica(English Letters) 2017年第10期30卷 1017-1026页

作者： Yao Li Jian-Lei Kuang Yi Lu Wen-Bin Cao Department of Inorganic Nonmetallic Materials School of Materials Science and EngineeringUniversity of Science and Technology Beijing The 306 Hospital of PLA Tianjin College University of Science and Technology Beijing

In this paper, V2O5 sol was firstly prepared using vanadyl sulfate as a vanadium source by modified sol-gel method at room temperature. Then flower-like V2O5 powders were prepared by coagulating as-prepared sol with anhydrous ethanol and subsequent annealing crystallization. The X-ray diffraction analysis indicated that V2O5 powders exhibited orthorhombic crystal structure after annealing at 450 ℃. The experimental data obtained from both field emission scanning electron microscopy and high-resolution transmission electron microscopy identified that V2O5 powders were approximately flower-like in shape and about 5 μm in size. Besides, the Brunauer-Emmett-Teller specific surface area of flowerlike V2O5 powders was 24.25 m^2/g. According to Uv-Vis spectroscopy, the degradation rate of toluidine blue O（TBO） on as-prepared flower-like V2O5 powders during 10 h of visible light irradiation with an intensity of 15.4 mW/m^2 was 88%,which was faster than those over P25（46%） as a comparison. In addition, the mineralization process of TBO was investigated, which primarily consisted of demethylation and ring-opening oxidation processes, and confirmed by liquid chromatograph-mass spectrometry. The precipitation-oxidation-peptization, coagulation, and crystallization processes were proposed as the formation mechanism for the preparation of flower-like V2O5.

关键词： vanadium pentoxide Photocatalyst Toluidine Blue O Mechanism Demethylation

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Water molecules and oxygen-vacancy modulation of vanadium pentoxide with fast kinetics toward ultrahigh power density and durable flexible all-solid-state zinc ion battery

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Journal of Energy Chemistry 2023年第10期85卷 581-591,I0014页

作者： Wenda Qiu Yunlei Tian Shuting Lin Aihua Lei Zhangqi Geng Kaitao Huang Jiancong Chen Fuchun Huang Huajie Feng Xihong Lu Guangdong Industry Polytechnic College Guangzhou 510300GuangdongChina MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry KLGHEI of Environment and Energy ChemistrySchool of ChemistrySun Yat-Sen UniversityGuangzhou 510275GuangdongChina Key Laboratory of Electrochemical Energy Storage and Energy Conversion of Hainan Province Hainan Normal UniversityHaikou 571158HainanChina

Aqueous zinc ion battery(ZIB)with many virtues such as high safety,cost-effective,and good environmental compatibility is a large-scale energy storage technology with great application ***,its application is severely hindered by the slow diffusion of zinc ions in desirable cathode ***,a technique of water-incorporation coupled with oxygen-vacancy modulation is exploited to improve the zinc ions diffusion kinetics in vanadium pentoxide(V_(2)O_5)cathode for *** incorporated water molecules replace lattice oxygen in V_(2)O_5,and function as pillars to expand interlayer *** the structural stability can be enhanced,and the zinc ions diffusion kinetics might also be promoted during the repeated intercalation/***,the lattice water molecules can effectively enhance conductivity due to the electronic density modulation ***,the modulated V_(2)O_5(H-V_(2)O_5)cathode behaves with superior rate capacity and stable durability,achieving 234 mA h g^(-1)over 9000 cycles even at 20 A g^(-1).Furthermore,a flexible all-solid-state(ASS)ZIB has been constructed,exhibiting an admirable energy density of 196.6 Wh kg^(-1)and impressive power density of 20.4 kW kg^(-1)as well as excellent long-term ***,the assembled flexible ASS ZIB would be able to work in a large temperature span(from-20 to 70℃).Additionally,we also uncover the energy storage mechanism of the H-V_(2)O_5 electrode,offering a novel approach for creating high-kinetics cathodes for multivalent ion storage.

关键词： Interlayer engineering Water intercalation vanadium pentoxide Ion diffusion kinetics Zinc ion battery

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Free-standing vanadium pentoxide nanoribbon film as a high-performance cathode for rechargeable sodium batteries

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Chinese Chemical Letters 2017年第12期28卷 2251-2253页

作者： Yi Sun Xin Liang Hongfa Xiang Yan YU Anhui Provincial Key Laboratory of Advanced Functional Materials and Devices School of Materials Science and Engineering Hefei University of TechnologyHefei 230009 China Key Laboratory of Materials for Energy Conversion Chinese Academy of Sciences Department of Materials Science and Engineering University of Scienceand Technology of China Hefei 230026 China

vanadium pentoxide （***2O） nanoribbons are synthesized via a hydrothermal process. These ribbons are 20nm thick, 200nm to 1 μm wide and several tens of micrometers long. Free-standing binder-free films are prepared by using these nanoribbons with multi-walled carbon nanotubes （MWCNTs） and used as the cathode for rechargeable sodium batteries. The large interlayer space between the V20s5 bilayers can enhance the kinetics of sodium ion intercalation/deintercalation. In addition, the intertwining network of the V2O5. 0.34H2O film provides efficient electron conduction pathways and shortens diffusion distances of sodium ion. The electrochemical tests prove that the free- standing V2O5. 0.34H2O film cathode delivers high reversible specific capacities （190 mAh/g） and good cycling stabilities （170 mAh/g after 150 cycles） in the voltage range between 1.5V and 3.5V.

关键词： vanadium pentoxide Cathode Free-standing electrode Rechargeable sodium batteries

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Fluorinated inverse opal carbon nitride combined with vanadium pentoxide as a Z-scheme photocatalyst with enhanced photocatalytic activity

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Chinese Chemical Letters 2022年第8期33卷 3797-3801页

作者： Ningkai Ding Bin Chen Liang Zhou Lingzhi Wang Yongdi Liu Jinlong Zhang Juying Lei State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process East China University of Science and TechnologyShanghai 200237China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Feringa Nobel Prize Scientist Joint Research CenterSchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai 200237China Shanghai Engineering Research Center for Multi-media Environmental Catalysis and Resource Utilization East China University of Science and TechnologyShanghai 200237China

In this work,Z-scheme V_(2)O_(5) loaded fluorinated inverse opal carbon nitride(IO F-CN/V_(2)O_(5)) was synthesized as a product of ternary collaborative modification with heterostructure construction,element doping and inverse opal *** catalyst presented the highest photocatalytic activity and rate constant for degradation of typical organic pollutants Rhodamine B(RhB)and was also used for the efficient removal of antibiotics,represented by norfloxacin(NOR),sulfadiazine(SD)and levofloxacin(LVX).Characterizations confirmed its increased specific surface area,narrowed bandgap,and enhanced visible light utilization *** mechanism study including band structure study and electron paramagnetic resonance(EPR)proved the successful construction of Z-scheme heterojunction,which improved photogenerated charge carrier migration and provide sufficient free radicals for the degradation *** combination of different modifications contributed to the synergetic improvement of removal efficiency towards different organic pollutants.

关键词： Carbon nitride Inverse opal structure vanadium pentoxide Fluorinate Organic pollutants degradation

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A porous puckered V_(2)O_(5) polymorph as new high performance cathode material for aqueous rechargeable zinc batteries

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Journal of Energy Chemistry 2021年第10期30卷 459-468,I0012页

作者： Dauren Batyrbekuly Barbara Laïk Jean-Pierre Pereira-Ramos Zhumabay Bakenov Rita Baddour-Hadjean Institut de Chimie et des Matériaux Paris Est(ICMPE) UMR 7182 CNRS et UniversitéParis Est Créteil2 rue Henri Dunant94320 ThiaisFrance School of Engineering National Laboratory AstanaNazarbayev University53 Kabanbay Batyr AvenueAstana 010000Kazakhstan

Aqueous rechargeable zinc batteries are getting increasing attention for large-scale energy storage owing to their advantages in terms of cost,environmental friendliness and ***,the layered puckeredγ’-V_(2)O_(5) polymorph with a porous morphology is firstly introduced as cathode for an aqueous zinc battery system in a binary Zn^(2+)/Li^(+)*** Zn‖γ’-V_(2)O_(5) cell delivers high capacities of 240 and190 mAh g^(-1) at current densities of 29 and 147 mA g^(-1),respectively,and remarkable cycling stability in the 1.6 V-0.7 V voltage window(97%retention after 100 cycles at 0.15 A g^(-1)).The detailed structural evolution during first discharge-charge and subsequent cycling is investigated using X-ray diffraction and Raman *** demonstrate a reaction mechanism based on a selective Li insertion in the1.6 V-1.0 V voltage *** involves a reversible exchange of 0.8 Li^(+)in γ’-V_(2)O_(5) and the same structural response as the one reported in lithiated organic ***,in the extended 1.6 V-0.7 V voltage range,this work puts forward a concomitant and gradual phase transformation from γ’-V_(2)O_(5) to zinc pyrovanadate Zn_(3)V_(2)O_(7)(OH)2.2 H_(2)O(ZVO)during *** mechanism involving the in-situ formation of ZVO,known as an efficient Zn and Li intercalation material,explains the high electrochemical performance here reported for the Zn‖γ’-V_(2)O_(5) *** work highlights the peculiar layered-puckeredγ’-V_(2)O_(5) polymorph outperforms the conventionalα-V_(2)O_(5) with a huge improvement of capacity of 240 mAh g^(-1)vs 80 mAh g^(-1) in the same electrolyte and voltage window.

关键词： vanadium pentoxide γ-V_(2)O_(5) Cathode Aqueous zinc battery High performance Layered structure Energy storage Renewable energy

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Structure of V_2O_5-P_2O_5-Sb_2O_3-Bi_2O_3 glass

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International Journal of Minerals,Metallurgy and Materials 2012年第7期19卷 628-635页

作者： Hong-yan Li Zhi-liang Zhu Feng-li Yang Wei-dong Zhuang Yun-sheng Hu Xiao-fan Wen National Engineering Research Center for Rare Earth Materials General Research Institute for Nonferrous Metals and Grirem Advanced Materials Co. Ltd. Beijing 100088 China BOE Technology group Co. Ltd. Beijing 100015 China Beijing Asahi Glass Electronics Co. Ltd. Beijing 100015 China

The structure ofV2O5-P2O5-Sb2O3-Bi2O3glass and its state of crystallization were studied by means of infrared spectroscopy and X-ray diffraction analysis. The results indicate that, in this glass, V and P exist mainly in the form of a single-stranded linear （VO3）n and an isolated （PO4） tetrahedral with no double bond. Partial V and P are connected through O, forming an amorphous structure of layered vana- dium phosphate. Trivalent Sb3＋ and Bi3＋ open the V=O bond and appear in interlayers, so a weak three-dimensional structure is connected successfully. Along with the substitution of Sb203 for partial V205 or that of P205 for partial V205, the network structure of the glass is rein- forced, and the crystallization is reduced.

关键词： glass structure sealing vanadium pentoxide phosphorus pentoxide antimonous oxide bismuth trioxide

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Calcium ion pinned vanadium oxide cathode for high-capacity and long-life aqueous rechargeable zinc-ion batteries

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Science China Chemistry 2020年第12期63卷 1767-1776页

作者： Min Du Feng Zhang Xiaofei Zhang Wentao Dong Yuanhua Sang Jianjun Wang Hong Liu Shuhua Wang State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100China Institute for Advanced Interdisciplinary Research(iAIR) University of JinanJinan 250022China

Rechargeable aqueous zinc ion batteries (ZIBs),with the easy operation,cost effectiveness,and high safety,are emerging candidates for high-energy wearable/portable energy storage ***,the unsatisfactory energy density and undesired long-term cycling performance of the cathode hinder the development of ***,we report the chemical preintercalation of a small amount of calcium ions into V2O5 as the cathode *** cathode of Ca0.04V2O5·1.74H2O (CVO)was demonstrated to have a high specific capacity of 400 mA h g^-1at the current density of 0.05 A g^-1and 187 mA h g^-1at 10 A g^-1,along with impressive capacity retention (100%capacity retention at 10 A g^-1 for 3,000 cycles).Meanwhile,the CVO//Zn battery exhibits a high energy density of 308 Wh kg^-1and a power density of 467 W kg^-1at 0.5 A g^-*** superior performance originates from the pinning effect of the calcium ions and the lubricating effect of the structural *** energy storage mechanism of the CVO cathode was also investigated in *** new phase (Zn3(OH)2V2O7·2H2O) generated upon cycling participates in the electrochemical reaction and thus contributes to the excellent electrochemical *** small amount of Ca^2+ pre-inserted into the interlayer of V2O5 sheds light on constructing cathodes with high energy density for ZIBs.

关键词： aqueous zinc-ion battery ion pre-intercalation vanadium pentoxide phase transition energy storage mechanism

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vanadium recovery from clay vanadium mineral using an acid leaching method

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Rare Metals 2008年第2期27卷 116-120页

作者： LI Haoran FENG Yali LIANG Jianglong LUO Xiaobing DU Zhuwei State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100080 China Civil and Environmental Engineering School University of Science and Technology Beijing Beijing 100083 China

A technique including direct acid leaching, vanadium precipitation with alkaline, sodium hydroxide releaching, impurity removing by adjusting pH value, precipitation vanadium with ammonium chloride, and vanadium pentoxide by roasting steps was proposed according to the characteristic of Xichuan clay vanadium mineral. The factors influencing leaching vanadium such as temperature and the concentration of sulfuric acid were investigated and optimized. The experimental results indicate that the extract ratios of V205 can reach 94% and 92% at a sodium chlorate ratio of 3% and a manganese dioxide ratio of 3%, respectivdy. A completely chemical precipitation method was adopted to decontaminate and enrich the vanadium in the acid leaching solution. The X-ray diffraction （XRD） pattern and the purity analysis of vanadium pentoxide indicate that the purity of final vanadium pentoxide can reach 99% and meet the standard specifications. The total recovery can reach about 75%. The technique has the characteristics of simplicity, less investment, and more environment safety as compared with the traditional salt roasting method.

关键词： clay vanadium mineral vanadium extraction acid leaching vanadium pentoxide

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Direct electrochemical reduction of solid vanadium oxide to metal vanadium at low temperature in molten CaCl_2-NaCl

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International Journal of Minerals,Metallurgy and Materials 2012年第6期19卷 499-505页

作者： Zhuo-fei Cai Zhi-mei Zhang Zhan-cheng Guo Hui-qing Tang State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing Beijing 100083 China

V205 sintered pellets and graphite rods were employed as the cathode and the anode, respectively; a molten CaC12-NaCI salt was used as the electrolyte. Then, V205 was directly reduced to metal vanadium by the Fray-Farthing-Chen （FFC） method at 873 K to realize low-temperature electrolysis. Two typical experimental conditions, electrolysis time and voltage, were taken into account to investigate the current efficiency and remaining oxygen content in electrolyzed products. The composition and microstmcture of the products were charac- terized by X-ray diffraction （XRD） and scanning electron microscopy （SEM）. SEM observations show that a higher voltage （1.8-3.4 V） and a longer electrolysis time （2-5 h） can improve the product quality separately, that is, a lower remaining oxygen content and a more uniform microstructure. The products with an oxygen content of 0.205wt% are successfully obtained below 3.4 V for 10 h. However, the current effi- ciency is low, and further work is required.

关键词： vanadium metallurgy vanadium pentoxide direct reduction electrolysis

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