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Rechargeable Aqueous Zinc-Ion Batteries in MgSO4/ZnSO4 Hybrid Electrolytes

Nano-Micro Letters 2020年第5期12卷 33-48页

作者： Yingmeng Zhang Henan Li Shaozhuan Huang Shuang Fan Lingna Sun Bingbing Tian Fuming Chen Ye Wang Yumeng Shi Hui Ying Yang College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhen 518060GuangdongPeople’s Republic of China International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education Institute of Microscale OptoelectronicsShenzhen UniversityShenzhen 518060People’s Republic of China Engineering Technology Research Center for 2D Material Information Function Devices and Systems of Guangdong Province ShenzhenPeople’s Republic of China Institute of Microscale Optoelectronics Shenzhen UniversityShenzhen 518060People’s Republic of China Pillar of Engineering Product Development Singapore University of Technology and Design8 Somapah RoadSingapore 487372Singapore School of Physics and Telecommunication Engineering South China Normal UniversityGuangzhou 510006People’s Republic of China Key Laboratory of Material Physics of Ministry of Education School of Physics and EngineeringZhengzhou UniversityZhengzhou 450052People’s Republic of China

MgSO4 is chosen as an additive to address the capacity fading issue in the rechargeable zinc-ion battery system of MgxV2O5·nH2O//ZnSO4//*** with different concentration ratios of ZnSO4 and MgSO4 are *** batteries measured in the 1 M ZnSO4^-1 M MgSO4 electrolyte outplay other competitors,which deliver a high specific capacity of 374 mAh g^-1 at a current density of 100 mA g^-1 and exhibit a competitive rate performance with the reversible capacity of 175 mAh g^-1 at 5 A g^-*** study provides a promising route to improve the performance of vanadium-based cathodes for aqueous zinc-ion batteries with electrolyte optimization in cost-effective electrolytes.

关键词： Aqueous zinc-ion batteries Hybrid electrolytes Electrolyte additives Magnesium ions vanadates

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Synthesis,structure and NIR luminescence properties of Yb^3+ and Bi^3+-activated vanadate GdVO4

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Journal of Rare Earths 2016年第8期34卷 837-842页

作者： K.Lenczewska M.Stefanski D.Hreniak Institute of Low Temperature and Structural Research Polish Academy of SciencesOkolna 250-422 WroclawPoland

Near-infrared emission of Yb3＋ and Bi3＋-co-doped GdVO4 vanadate phosphors obtained via the modified Pechini＇s method was reported. The phase purity and structure of samples were characterized by X-ray powder diN＇action （XRD）, X-ray energy disper- sion spectroscopy （EDS）, scanning electron microscopy （SEM）, Raman and infrared （IR） spectroscopy. Photoluminescence emission （PL） and excitation （PLE） spectra were recorded and investigated in details. Results indicated that upon near-UV excitation （340 nm） in the （Bi3＋-V5＋） charge transfer state this phosphor had a strong broad band yellow-green emission （3Pi--ISo） of Bi3＋ ions and also NIR emission （2Fs/2-2Fv/2） of Yb3＋ ions in the range of 950-1050 nm, which matched well with the spectral response of the sili- con-based solar cells. The decreasing Bi3＋ emission with increasing Yb3＋ concentration proved the occurrence of energy transfer from Bi3＋ to Yb3＋ ions. Results demonstrated that Yb3＋ and Bi3＋-co-doped GdVO4 vanadate phosphors might act as a NIR down-conversion （DC） solar spectral converter to enhance the efficiency of the silicon-based solar cells.

关键词： near-infrared phosphor vanadates energy transfer rare earths

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A ZnGeP2 Optical Parametric Oscillator with Mid-IR Output Power 3 W Pumped by a Tm,Ho：GdVO4 Laser

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Chinese Physics Letters 2009年第2期26卷 145-148页

作者：姚宝权朱国利鞠有伦王月珠 National Key Laboratory of Tunable Laser Technology Harbin Institute of Technology Harbin 150080

We report an efficient mid-infrared optical parametric oscillator （OPO） pumped by a pulsed Tm,Ho-codoped GdVO4 laser. The IO-W Tm,Ho：GdVO4 laser pumped by a 801 nm diode produces 20ns pulses with a repetition rate of lO kHz at wavelength of 2.0481μm. The ZnGeP2 （ZGP） OPO produces 15-ns pulses in the spectral regions 3.65-3.8μm and 4.45-4.65μm simultaneously. More than 3 W of mid-IR output power can be generated with a total OPO slope efficiency greater than 58% corresponding to incident 2μm pump power. The diode laser pump to mid-IR optical conversion efficiency is about 12%.

关键词： OPTICAL parametric oscillators ZINC compounds GADOLINIUM vanadates LASERS DIODES

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Ammonium Ion and Structural Water Co-Assisted Zn^(2+) Intercalation/De-Intercalation in NH_(4)V_(4)O_(10)∙0.28H_(2)O

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Chinese Journal of Chemistry 2021年第7期39卷 1885-1890页

作者： Ting Zhu Bo Mai Ping Hu Ziang Liu Congcong Cai Xuanpeng Wang Liang Zhou State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhanHubei430070 China Department of Physical Science&Technology School of ScienceWuhan University of TechnologyWuhanHubei430070 China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu Hydrogen ValleyFoshanGuangdong528200 China

Main observation and conclusion The cathode material plays a crucial role in the performances of aqueous zinc-ion batteries(ZIBs).Herein,we report an ammonium vanadate(NH_(4)V_(4)O_(10)∙0.28H_(2)O,NHVO)aqueous ZIB cat... 详细信息

关键词： Aqueous zinc-ion battery Cathode material vanadates Zincates Electrochemistry

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Na2V6O16·2.14H2O nanobelts as a stable cathode for aqueous zinc-ion batteries with long-term cycling performance

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Journal of Energy Chemistry 2019年第11期28卷 185-191页

作者： Fang Hu Di Xie Depeng Zhao Guihong Song Kai Zhu School of Materials Science and Engineering Shenyang University of TechnologyShenyang 110870LiaoningChina Key Laboratory of Superlight Materials and Surface Technology Ministry of EducationCollege of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150010HeilongjiangChina

Aqueous zinc-ion batteries(ZIBs) have been considered as one of the most promising electrochemical devices for large-scale energy storage system owing to their low cost and high safety. Herein, Na2V6O16·2.14H2O nanobelts are synthesized and applied as cathode material for ZIBs. The sample displays a high capacity of 466 m Ahg^-1 at 100 mAg^-1 and stable cycling performance with a capacity retention of 90% over 20 0 0 cycles at the 20 Ag^-1. Moreover, Na2V6O16·2.14H2O presents a capable rate ability and a high energy density of 312 Wh kg^-1 at a specific power of 70 Wkg^-1. The superior electrochemical performance is attributed to the large interlayer spacing and outstanding structure stability, which promise the highly reversible intercalation and extraction of zinc ion. The electrochemical kinetics and zinc ion storage mechanism are also investigated. This work demonstrates that nanoscale electrode materials with large interlayer spacing can effectively enhance the electrochemical performance of aqueous ZIBs, which can be extended to other metal ion batteries, such as magnesium ion batteries and aluminum ion batteries.

关键词： Aqueous zinc-ion batteries Nanobelts Sodium vanadates Electrochemical performance

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Fast and Stable Zinc Anode‑Based Electrochromic Displays Enabled by Bimetallically Doped Vanadate and Aqueous Zn^(2+)/Na^(+)Hybrid Electrolytes

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Nano-Micro Letters 2023年第12期15卷 231-241页

作者： Zhaoyang Song Bin Wang Wu Zhang Qianqian Zhu Abdulhakem YElezzabi Linhua Liu William WYu Haizeng Li College of Chemistry and Chemical Engineering Qingdao UniversityQingdao 266071People’s Republic of China Optics and Thermal Radiation Research Center Institute of Frontier and Interdisciplinary ScienceShandong UniversityQingdao 266237People’s Republic of China School of Chemistry and Chemical Engineering Shandong UniversityJinan 250100People’s Republic of China Ultrafast Optics and Nanophotonics Laboratory Department of Electrical and Computer EngineeringUniversity of AlbertaEdmontonAB T6G 2V4Canada

vanadates are a class of the most promising electrochromic materials for displays as their multicolor ***,the slow switching times and vanadate dissolution issues of recently reported vanadates significantly hinder their diverse practical ***,novel strategies are developed to design electrochemically stable vanadates having rapid switching *** show that the interlayer spacing is greatly broadened by introducing sodium and lanthanum ions into V_(3)O_(8)interlayers,which facilitates the transportation of cations and enhances the electrochemical *** addition,a hybrid Zn^(2+)/Na^(+)electrolyte is designed to inhibit vanadate dissolution while significantly accelerating electrochemical *** a result,our electrochromic displays yield the most rapid switching times in comparison with any reported Zn-vanadate electrochromic *** is envisioned that stable vanadate-based electrochromic displays having video speed switching are appearing on the near horizon.

关键词： vanadates Hybrid electrolytes Displays Electrochromic

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SYNTHESIS AND CHARACTERIZATION OF COMPLEX FERROELECTRIC OXIDE

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Journal of Advanced Dielectrics 2012年第4期2卷 79-88页

作者： PIYUSH R.DAS B.N.PARIDA R.PADHEE R.N.P.CHOUDHARY Department of Physics Institute of Technical Education and Research Siksha'O'Anusandhan University Khandagiri Bhubaneswar 751030OdishaIndia

The polycrystalline sample of Li_(2)Pb_(2)Pr_(2)W_(2)Ti_(4)V_(4)O_(30) was prepared by a solid-state reaction *** preparation conditions of the compound have been optimized using thermal analysis(DTA and TGA)*** temperature structural analysis confirms the formation of single phase compound in orthorhombic crystal *** surface morphology of the sample,recorded by scanning electron microscope,shows uniform grain distribution on the surface of the *** observation of hysteresis loop confirmed that the material has ferroelectric properties at room *** properties of the material were studied by complex impedance spectroscopic *** dependence of electrical parameters(impedance,modulus,etc.)is strongly correlated to the micro-structural characteristics(bulk,grain boundary,etc.)of the sample.A typical temperature-dependent resistive characteristic of the sample(i.e.,negative temperature coe±cient of resistance(NTCR))exhibits its semiconducting *** temperature dependence of dc conductivity shows a typical Arrhenius behavior.A signature of ionic conductivity in the system was observed in ac conductivity *** sample obeys Jonscher's universal power *** hopping mechanism for electrical transport properties of the system with nonexponential-type conductivity relaxation was suggested from the electrical modulus analysis.

关键词： Solid-state reaction vanadates ferroelectric properties impedance electrical conductivity

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