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3D porous V2O5 architectures for high-rate lithium storage

Journal of Energy Chemistry 2020年第1期29卷 15-21,I0002页

作者： Qifei Li Dong Chen Huiteng Tana Xianghua Zhang Xianhong Rui Yan Yu Guangzhou Key Laboratory of Low-Dimensional Materials and Energy Storage Devices Collaborative Innovation Center of Advanced Energy MaterialsSchool of Materials and EnergyGuangdong University of TechnologyGuangzhou 510006GuangdongChina Hefei National Laboratory for Physical Sciences at the Microscale Department of Materials Science and EngineeringKey Laboratory of Materials for Energy ConversionChinese Academy of Sciences(CAS)University of Science and Technology of ChinaHefei 230026AnhuiChina State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization Panzhihua 617000SichuanChina Dalian National Laboratory for Clean Energy(DNL) Chinese Academy of SciencesDalian 116023LiaoningChina State Key Laboratory of Fire Science University of Science and Technology of ChinaHefei 230026AnhuiChina Guangdong University of Technology Guangzhou 510006GuangdongChina University of Science and Technology of China Hefei 230026Anhui.China

The discovery of novel electrode materials promises to unleash a number of technological advances in lithium-ion batteries.V2O5 is recognized as a high-performance cathode that capitalizes on the rich redox chemistry of vanadium to store *** unlock the full potential of V2O5,nanotechnology solution and rational electrode design are used to imbue V2O5 with high energy and power density by addressing some of their intrinsic disadvantages in macroscopic crystal ***,we demonstrate a facile and environmental-friendly method to prepare nanorods-constructed 3D porous V2O5 architectures(3 D-V2O5)in *** 3D porous architecture is found to be responsible for the enhanced charge transfer kinetics and Li-ion diffusion rate of the 3D-V2O5 *** the result,the 3D-V2O5 surpasses the conventional bulk V2O5 by showing enhanced discharge capacity and rate capability(delivering 154 and 127 m Ah g^-1 at 15 and 20 C,respectively).

关键词： Lithium storage V2O5 cathode Porous structure Mass production High rate

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Effect of Hydrolysis on vanadium Precipitation with Acidic Ammonium Salt from High Concentration of Alkaline vanadium Solution

SSRN

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SSRN 2022年

作者： Jiang, Lin He, Wenyi Du, Guangchao Zheng, Hao Peng, Yi State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization Pangang Group Research Institute Co. Ltd. Sichuan Panzhihua617000 China

vanadium precipitation with acidic ammonium salt is widely applied in industrial practice of vanadium oxide production. However, the ammonia wastewater produced in this process and the resultant environmental problem have been paid increasing attention. With the intention of reducing wastewater and the corresponding treatment cost, it is directly effective to enhance the vanadium content of basic qualified solution. Unfortunately, high vanadium concentration brings about a lower vanadium precipitation rate and higher Na 2 O content in ammonium poly-vanadate (APV), as a result of the hydrolysis as the secondary reaction in the vanadium precipitation process. The mechanism and effect of hydrolytic vanadium reaction on precipitation result has rarely been reported. Therefore, the whole precipitation process, including the effect of pH value, reaction temperature and vanadium concentration on vanadium precipitation were firstly clarified by analyzing the thermodynamic form of vanadate radicals in this paper. Simultaneously, a study on technological parameters was conducted based on the results of theoretical analysis. The phase composition and crystal morphology of the precipitates were also inspected using XRD, SEM-EDS. The results show that the secondary reaction of vanadium hydrolysis cannot be eliminated in the process of vanadium precipitation with acidic ammonia salt. When the vanadium content is higher than 35 g/L, Na 2 O in APV is easy to exceed 0.8%. Na 2 O mainly occurs in V 2 O 5 ·H 2 O in the form of amorphous body or chemical absorption. The results in this work could provide a fundamental guide for the application of high concentration vanadium precipitation. © 2022, The Authors. All rights reserved.

关键词： Precipitation (chemical)

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Research on Application Mechanism of vanadium Extraction Tailings by Cleaner Production

Research on Application Mechanism of Vanadium Extraction Tai...

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2012 Asian Pacific Conference on Energy,Environment and Sustainable Development(APEESD 2012)

作者： Wang Jian Chen Lian Jiang Long-kui Yi Liang-gang Huang shengquan Zhang Yong-Jun PanGang Group Research Institute Co. Ltd. State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization PanGang Group Chengdu Steel & vanadium Co. Ltd

ISBN: (纸本)9783037855683

In order to make sure the application direction of vanadium extraction tailings, basic characteristics, slagging mechanism of vanadium extraction tailings as well as thermal decomposition temperature and absorbed heat of CaSO4 in vanadium extraction tailings are analyzed, in addition, the effect of charging vanadium extraction tailings under supersaturation state on the sulfur content in steel is studied by using induction furnace under low sulfur condition. The results of research and application indicate that vanadium extraction tailings after desulfuration treatment can be used to steelmaking-slagging, and the application effect is obviously.

关键词： vanadium extraction tailings by cleaner production desulfuration steelmaking-slagging

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Recent advances in catalytic filters for integrated removal of dust and NOx from flue gas:fundamentals and applications

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resources Chemicals and Materials 2022年第3期1卷 275-289页

作者： Changming Li Lin Huangfu Jianling Li Shiqiu Gao Guangwen Xu Jian Yu State Environmental Protection Key Laboratory of Food Chain Pollution Control School of Ecology and EnvironmentBeijing Technology and Business UniversityBeijing 100048China. State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization Pangang Group Research Institute Co.LtdPanzhihua 617000China State Key Laboratory of Multi-phase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China. School of Chemical Engineering Shenyang University of Chemical TechnologyShenyang 110142LiaoningChina

Catalytic filters including catalytic bag filters and catalytic filter candles, which couple the filters with denitrification catalysts to obtain the ability to simultaneously remove SOx, NOx and dust, have become the promising applied technology for the integrated flue gas treatment because of their huge advantages in reducing the initial investment, floor occupancy and maintenance cost. In this review, we will summarize the recent advances in the development of catalytic filters in terms of their process principles, filter material, denitrification catalysts, structure-function relationships and industrial applications. Moreover, suggestions about the current challenges and future opportunities are also given from the viewpoints of catalysts and filter material design, catalytic filter preparation methods, and their poisoning and regeneration, etc. With the further development of theory and engineering research, the extensive industrial application of catalytic filters in the field of multiple pollutants flue gas treatment is highly anticipated in the future.

关键词： Catalytic filter candles Catalytic bag filters Integrated flue gas treatment Industrial application

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Reaction synthesis of (V,Nb)C particle reinforced iron matrix composites by in-situ powder sintering

Reaction synthesis of (V,Nb)C particle reinforced iron matri...

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Materials Science and Technology Conference and Exhibition 2013, MS and T 2013

作者： Xian, Yong Wang, Yisan Sun, Zhaohui Zhai, Qijie Pangang Group Research Institute Co. Ltd. State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization Panzhihua 617000 Sichuan China School of Manufacturing Sci. and Eng. Sichuan University Chengdu 610065 China School of Materials Science and Engineering Shanghai University Shanghai 200072 China

ISBN: (纸本)9781629933092

In-situ reaction synthesis of (V,Nb)C particle reinforced iron matrix composites was conducted by powder sintering and the formation of complex carbide phase, microstructure, hardness and bending strength were investigated by X-ray diffraction (XRD), scanning electron microscope (SEM),energy dispersive X-ray spectrometer (EDS), Rockwell hardness tester and flexural strength test machine, respectively. The results indicated that the lattice parameter of the complex carbide (V,Nb)C with Nb/V mole ratio 0∼0.5 was a=4.172Å∼4. 273Å, and the hardness and bending strength were improved significantly due to lower bainite and martensite forming and particle refinement attributed to Nb/V mole ratio increasing. Copyright © 2013 MS&T'13®.

关键词： Microstructure

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Development of V-N microalloyed Q460GJC steel plates

Development of V-N microalloyed Q460GJC steel plates

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第五届宝钢学术年会

作者： YANG Xiongfei YU Hao State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization Pangang Group Rese School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100

For the purpose of reducing alloys additions and then its cost of conventionally combined Nb-V microalloyed Q460 grade steel plates for construction,a HSLA steel alloying design with only V-N microalloying of (0.060-/o - 0.080-/o ) V and free of niobium,and corresponding thermal mechanical controlled process were facilitated by better understanding the third generation TMCP concept and V-N microalloying *** resulted in successfully commercializing gauge 50 mm V-N microalloyed Q460GJC steel plates with good combination of high strength > 470 MPa and improved toughness of Akv@ O°C > 150 J,and low YS/UST ratio of 80% as *** calculation indicated that the contribution by fined-grain and precipitate strengthening amount to ~ 66% of yield strength of the newly developed plate steels.

关键词： V-N microalloying TMCP Q460 steel plate

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Influence of pyrolysis temperature on tea waste-based biochar property and function as a heavy metal sorbent in aqueous solution 6

Influence of pyrolysis temperature on tea waste-based biocha...

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6th International Conference on Mechanical, Aeronautical and Automotive Engineering, ICMAA 2022

作者： Cui, X.L. Zhong, J. Li, H.X. Jin, R.Z. Liu, Y. Che, X.K. Yuan, X.T. Zhang, Q.D. Fu, H. State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization Sichuan Panzhihua617000 China National Engineering Laboratory of Biohydrometallurgy GRINM Resources and Environmental Technology Corporation Limited Beijing101407 China GRINM Group Corporation Limited Beijing100088 China University of Science and Technology Beijing Beijing100083 China State Key Laboratory of Mineral Processing Beijing102628 China Environmental Technology Corporation Limited Zibo255314 China

The properties of biochars and their adsorption performance are highly dependent on the pyrolysis temperature. In this study, tea waste-based biochars at the different pyrolysis temperature (573K-973K) were investigated, and adsorption capacities of heavy metals from solution by biochars were studied. TG/DTA and SEM results showed that with the increased of pyrolysis temperature, the yield of biochar sharply declined and reached stable at 973K. Moreover, low ratios of H/C, O/C and (O+N)/C were obtained at high pyrolysis temperature, which could produce more pore structure and be conducive to the adsorption of heavy metal ions. The adsorption experiments confirmed that the Pb and Zn absorption efficiency at 973K could reach 99.98% and 30.49%, respectively, which was the optimum temperature. © Published under licence by IOP Publishing Ltd.

关键词： Heavy metals

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Study on burden distribution during charging in bell-less top blast furnace by discrete element method

Study on burden distribution during charging in bell-less to...

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Materials Science and Technology Conference and Exhibition 2013, MS and T 2013

作者： Zhang, Jianliang Qiu, Jiayong Sun, Hui Wang, Guangwei Wang, Zhe Xie, Hongen School of Metalurgical and Ecological Engineering University of Science and Technology Beijing No. 30 Xueyuan Road Haidian District Beijing 100083 China State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization PanGang Group Research Institute Co. Ltd. No.90 Taoyuan Street East District Panzhihua Sichuan 617000 China

ISBN: (纸本)9781629933092

It is of vital importance to control the falling trajectory for stabilizing and optimizing burden distribution. In order to analyze the burden flow behavior at a bell-less top of blast furnace, a simulation model was developed by using discrete element method. Therefore, the flow behavior such as falling trajectory and size segregation during charging were analyzed at different chute inclination angle. It is indicated that the effect of chute inclination angle on the particle behavior is very significance and important. Size segregation and deflection is obviously observed in the chute, most of the small particles move toward the chute intrados wall, while the large ones mainly tend to stay at the upper surface of particles flow. Due to particle segregation during charging, the large granules are positioned at the center and periphery, while the small ones are stacked below the heap peak being close to the center of furnace. Copyright © 2013 MS&T'13®.

关键词： Trajectories

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Study on the electrochemical property of a pure titanium plate in a corrosive medium after anodic oxidation treatment

Study on the electrochemical property of a pure titanium pla...

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2016 3nd International Conference on Energy Science and Applied Technology (ESAT 2016)

作者： Zhefeng Xu Shan Liu Haoqing Zheng Pan Gang Group Research Institute Co.Ltd. State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization Department of Biological and Chemical Engineering Panzhihua University

Anodic oxidation treatment was carried on commercial pure titanium with voltages of 2V,3V,5V respectively in a mixed solution containing 40 g/L sodium gluconate and 10 ml/L *** Properties of the passive film was studied by Electrochemical Impedance Spectroscopy(EIS) *** electrochemical impedance spectroscopy was analyzed by equivalent *** obtained results show that passive film obtained in 3 V has the best corrosion resistance.

关键词： commercial pure titanium anodize impedance spectroscopy corrosion resistance

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Research on Mixer Parametric Modeling System Based on Redevelopment of ANSYS

Research on Mixer Parametric Modeling System Based on Redeve...

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2015年第三届机械与材料工程亚洲会议

作者： Zheng Bin KeLun Tang PanGang Group Research Institute Co. Ltd.State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization Department of Electromechanical Engineering Sichuan University of Science & Engineering

In this paper, the mixer parametric modeling system software was developed by using VB which was taken as the foreground development program, and the paper combined with ANSYS software to create the finite element model of mixer blade and cylinder for the following numerical simulation of the flow field and parameter optimization of mixer. The software user interface was developed by VB and the pre-process model was created by invoking APDL of ANSYS in background. Therefore, the operation of modeling, meshing, component-building of mixer blade and cylinder were completed by using APDL and the graphic and text were outputted and displayed on the mixer parametric modeling system user interface which was developed by VB. Practice proved that it is convenient to modify the mixer solid model created by the parametric design language of ANSYS due to the similar structure.

关键词： Research on Mixer Parametric Modeling System Based on Redevelopment of ANSYS

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