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A donor-acceptor conjugated bipolar polymer with multielectron redox sites for long-cycle-life and high-rate aqueous zinc dual-ion batteries

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Journal of Energy Chemistry 2025年第3期102卷 144-150页

作者： Lian-Wei Luo Siteng Zhu Wen Yan Ma Dan Li Chong Zhang Jia-Xing Jiang Key Laboratory of Optoelectronic Chemical Materials and Devices(Ministry of Education) School of Optoelectronic Materials&TechnologyJianghan UniversityWuhan 430056HubeiChina Key Laboratory for Macromolecular Science of Shaanxi Province Shaanxi Engineering Laboratory for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal UniversityXi'an 710062ShaanxiChina

Aqueous zinc-ion batteries(AZIBs)have hugely latent advantages in large-scale energy storage due to its innate safety,reasonable price,and ***,most AZIB cathode materials suffer from short cycling life and poor rate ***,a bipolar donor-acceptor(D-A)conjugated microporous polymer(PTZ-BDTB),consisting of electron-withdrawing benzo[1,2-b:4,5-b']dithiophene-4,8-dio ne(BDTB)units and electron-donating phenothiazine(PTZ)units,is developed as the cathode material of aqueous zinc dual-ion batteries(AZDIBs).The D-A type structure design could reduce the band gap,thus promoting electron transfer in the polymer ***,the PTZ-BDTB cathode in a30 mol/kg(m)ZnCl_(2)water-in-salt electrolyte exhibits a high reversible capacity of 202 mA h g^(-1)at0.05 A g^(-1)with excellent rate performance(109 mA h g^(-1)at 15 A g^(-1)),which is far superior to its counterpart polymers PPTZ and ***,PTZ-BDTB shows ultra-stable cycle performance with capacity retention ratios of 76.2%after 460 cycles at 0.05 A g^(-1)and 96%after 27000 cycles at 5 A g^(-1).PTZBDTB also exhibits a low self-discharge ability with capacity retention about 76.4%after resting the battery for 28 *** results demonstrate that D-A type structural design is a promising strategy for constructing high performance cathode materials for AZDIBs.

关键词： Conjugated microporous polymer Donor-acceptor structure Bipolar organic cathode material Aqueous zinc dual-ion batteries

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Time-dependent color-tunable room temperature phosphorescence from unusual conformational transitions in phenothiazine polymers under UV irradiation

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science China Chemistry 2025年第3期68卷 1091-1098页

作者： Jiwen Lu Yifan Niu Chanjuan Jin Chengheng Wu Hanyu Wang Yan Guan Ping Wang Xinghe Fan Key Lab of Environment-Friendly Chemistry and Application of Ministry of Education Key Laboratory of Polymeric Materials and Application Technology of Hunan ProvinceKey Laboratory of Advanced Functional Polymer Materials of CollegesUniversities of Hunan ProvinceCollege of ChemistryXiangtan UniversityXiangtan 411105China Beijing National Laboratory for Molecular Sciences Key Laboratory of Polymer Chemistry and Physics of Ministry of EducationCenter for Soft Matter Science and EngineeringCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China

Achieving color-tunable room-temperature phosphorescence(RTP),especially including blue RTP from a single-component polymer still faces a formidable ***,we wisely choose conformation-dependent phenothiazine with trifluoromethyl substituent as the side group of the phosphor monomer(Cz PT)and then copolymerize it with N-isopropylacrylamide(NIPAM)through photopolymerization to obtain polymers PPCz ***-dependent color-tunable phosphorescence from unusual quasi-equatorial(eq)to quasi-axial(ax)conformers are obtained,and the RTP color changes from orange(550 nm)to blue(470 nm)with phosphorescence lifetime up to 0.96 *** theoretical calculations confirm that the quasi-axial conformer is the preferred structure that facilitates the formation of intramolecular hydrogen bonds on the trifluoromethyl *** EPR spectra illustrate that the persistent UV irradiation generates radical cations to induce the conformational transitions first,followed by photopolymerization immobilizing the ax conformation in PPCz *** of data encryption and anti-counterfeiting are fabricated to show prompt and delayed multicolor *** work affords a simple and feasible avenue for two-dimensional color tunable room temperature phosphorescence from a single-component polymer.

关键词： polymeric room temperature phosphorescence color-tunable phosphorescence conformation-dependent time-dependent blue phosphorescence

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Improved surface hydrophobicity of self-assembled transport layers enables perovskite/silicon tandem solar cells with efficiency approaching 31%

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Journal of Energy Chemistry 2025年第5期104卷 749-755页

作者： Jing Yang Jin Wang Biao Shi Yixin Dong Dongxue Liu Shenhzhi Xu Qian Huang Xiaona Du Fu Zhang Miao Yang Yongcai He Bo He Xiaoning Ru Shengzhong Liu Xixiang Xu Pengyang Wang Ying Zhao Xiaodan Zhang Three Gorges Corporation Science and Technology Research Institute Institute of Photoelectronic Thin Film Devices and Technology Renewable Energy Conversion and Storage Center State Key Laboratory of Photovoltaic Materials and CellsNankai University Tianjin Key Laboratory of Efficient Utilization of Solar Energy Haihe Laboratory of Sustainable Chemical Transformations Engineering Research Center of Thin Film Photoelectronic Technology of Ministry of Education Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and Engineering Shaanxi Normal University LONGi Central R&D Institute LONGi Green Energy Technology Co. Ltd.

[4-（3,6-dimethyl-9H-carbazol-9-yl）butyl]phosphonic acid （Me-4PACz） self-assembled monolayer （SAM）as the hole transport materials have been demonstrated remarkable potential in perovskite solar cells（PSCs）.However,the hydrophobicity of Me-4PACz presents a critical challenge for the fabrication of high-quality perovskite films due to its poor ***,a doped Al2O3with Me-4PACz to modify the Me-4PACz surface was *** one hand,this approach improved the wettability of the Me-4PACz film,enhancing the coverage,uniformity,and buried interface properties of the perovskite *** the other hand,compared to Al2O3modification alone,doping Al2O3with Me-4PACz allowed direct contact between the perovskite and Me-4PACz,resulting in better buried interface *** a result,we achieved an efficiency of 22.71% for single-junction wide-bandgap perovskite solar cells（1.68 eV）.Additionally,the efficiency of perovskite/silicon tandem solar cells was improved from 28.68%to 30.92%,with a significant reduction in ***,the tandem cells demonstrated no degradation after 4200 s of operation at the maximum power point.

关键词： Hydrophic Me-4PACz Perovskite/silicon Tandem solar cell

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Role of iron ore in enhancing gasification of iron coke:Structural evolution,influence mechanism and kinetic analysis

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 58-69页

作者： Jie Wang Wei Wang Xuheng Chen Junfang Bao Qiuyue Hao Heng Zheng Runsheng Xu School of Chemistry and Materials Science Hubei Engineering UniversityXiaogan 432000China Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education Wuhan University of Science and TechnologyWuhan 430081China Institue of Ironmaking Technology Baosteel Central Research InstituteShanghai 201999China State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

The utilization of iron coke provides a green pathway for low-carbon *** uncover the influence mechanism of iron ore on the behavior and kinetics of iron coke gasification,the effect of iron ore on the microstructure of iron coke was ***,a comparative study of the gasification reactions between iron coke and coke was conducted through non-isothermal thermogravimetric *** findings indicate that compared to coke,iron coke exhibits an augmentation in micropores and specific surface area,and the micropores further extend and *** provides more adsorption sites for CO_(2) molecules during the gasification process,resulting in a reduction in the initial gasification temperature of iron *** the heating rate in non-isothermal gasification can enhance the reactivity of iron *** metallic iron reduced from iron ore is embedded in the carbon matrix,reducing the orderliness of the carbon structure,which is primarily responsible for the heightened reactivity of the carbon *** kinetic study indicates that the random pore model can effectively represent the gasification process of iron coke due to its rich pore ***,as the proportion of iron ore increases,the activation energy for the carbon gasification gradually decreases,from 246.2 kJ/mol for coke to 192.5 kJ/mol for iron coke 15wt%.

关键词： low-carbon ironmaking iron coke gasification structural evolution kinetic model

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Multi-anion electrolyte modulates the interactions in solvation structure to construct robust lithium metal batteries

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Journal of Energy Chemistry 2025年第5期104卷 36-43页

作者： Ke-Feng Ren Yun-Fei Du Jia-Xin Guo Zhen-Hui Luo Xin Sun Wen-Bo Tang Tian-Qi Li Cong Guo Weizhai Bao Feng Yu He Liu Xin-Bing Cheng Jingfa Li Jiangsu Key Laboratory of New Energy Devices & Interface Science School of Chemistry and Materials Science Nanjing University of Information Science and Technology Z Energy Storage Center Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education School of Energy and Environment Southeast University Tianmu Lake Institute of Advanced Energy Storage Technologies

Designing anion-dominated weak solvation structures is often achieved by elevating the concentration of Li ***,this is accompanied by the increase in the ***,a medium concentration electrolyte （1 M） with weak solvation structures is established by the multi-anion *** anions in the electrolyte strengthen the anion-solvent interactions through stronger ion–dipole *** reduces the quantity of free solvent and improves the reduction resistance of *** addition,the Li ion–solvent interaction is weakened,facilitating the anions to enter the solvation sheaths of Li *** multi-anion-dominated weak solvation structures boost Li ion diffusion in the electrolyte,accelerate the desolvation process of Li ions,and induce inorganic-rich solid electrolyte interphase and uniform Li *** average Coulombic efficiency of 99.1%for repeated Li plating/stripping can be ***||LiNi0.5Co0.2Mn0.3O2cells with a high cathode loading of 3.0 m A h cm-2can maintain a capacity retention as high as 95% after 150 *** finding provides novel standpoints to modulate the interaction of solvation structures and extend the lifespan of high-energy–density Li metal batteries.

关键词： Desolvation Lithium metal battery Multi-anion electrolyte Solid electrolyte interphase Weak solvation structure

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Chiral electrolytes for rechargeable metal batteries

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Journal of Energy Chemistry 2025年第3期102卷 834-841页

作者： Lan-Qing Wu Yu-Jie Ning Zhen-Yu Fan Zhe Li Kun Li Jia Li Shuang-Xin Ren Dubin Huang Yang Yang Weiwei Xie Huan Wang Qing Zhao Frontiers Science Center for New Organic Matter Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education)State Key Laboratory of Advanced Chemical Power SourcesCollege of ChemistryNankai UniversityTianjin 300071China Beijing Golden Feather New Energy Technology Co. LtdBeijing 100080China

Charge transfer at the liquid(electrolyte)-solid(metal)interfaces is of fundamental importance to metal electrochemical deposition that further determines the reversibility and kinetics of energy-dense rechargeable metal batteries(RMBs).We demonstrate the fast charge transfer at the electrolyte-metal interfaces for lithium metal by designing and synthesizing electrolytes with chiral solvents:R(or S)-1,2-dimethoxy pro pane(R-DMP or S-DMP)and R(or S)-4-methyl-1,3-dioxolane(R-MDOL or S-MDOL).The chiral-induced spin selectivity is considered to produce spin-polarized metal surfaces,enabling the improvement in charge transfer rate and *** deposited Li metal in chiral electrolytes shows smooth and uniform morphologies,as well as high initial(>95%)and average(~99.2%)Coulombic efficiency for Li metal stripping/plating process,thus prolonging the life-span of batteries using thin lithium anode(50μm)to 400 cycles till 80%capacity *** work provides a distinct approach to regulate metal deposition beyond the limitation of ion de-solvation.

关键词： Chiral ether electrolytes Electrode kinetics Li metal batteries Metal deposition Solvation structures

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A novel mixed metal orthoborate Ba2ZnTb2(BO3)4: Crystal structure and multicolor emitting properties introduced by Eu3+ doping

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Ceramics International 2025年第12期51卷 16736-16748页

作者： Ni, Jiawen Chen, Xuean Xiao, Weiqiang Song, Xiaoyan College of Materials Science and Engineering Key Laboratory of Advanced Functional Materials Ministry of Education of China Beijing University of Technology Beijing100124 China Beijing Key Laboratory of Microstructure and Property of Solids Beijing University of Technology Beijing100124 China

Novel mixed metal orthoborate Ba2ZnTb2(BO3)4 was obtained through the high-temperature solid-state reaction at 950 °C. Its crystal structure was determined by single-crystal X-ray diffraction for the first time. The compound crystallizes in the orthorhombic system, Pbca space group, with cell parameters a = 13.4360(1), b = 6.4539(1), c = 25.3262(2) Å, V = 2196.15(4) Å3 and Z = 8. It represents a novel structure type in which ZnO4 tetrahedra and TbO8 polyhedra are interconnected via corner-, edge-, and face-sharing to form 1D [Zn2Tb4O24]n32n− chains. Some B atoms reside in triangular voids of the chains to strengthen the structure, while the others ‘stitch’ the chains together via B–O bonds to create a 3D [Zn2Tb4(BO3)8]n8n− network, with the open channels hosting Ba2+ ions. In addition, polycrystalline samples of Ba2ZnTb2-2xEu2x(BO3)4 (0 ≤ x ≤ 1) were synthesized via solid-state reaction at 780 °C and systematically characterized by powder XRD combined with Rietveld refinements, SEM, IR/Raman, XPS and photoluminescence spectroscopy. As it was revealed, due to the Tb3+ → Eu3+ energy transfer, the emission color of the obtained phosphors can be continuously tuned from green (0.2947, 0.5876) to orange (0.5766, 0.3994) and eventually to red (0.6419, 0.3536) upon the near-UV excitation at 377 nm through changing the Eu3+/Tb3+ ratio. The representative Ba2ZnTb1.998Eu0.002(BO3)4 sample shows a QY of ∼14.84 % (λex = 377 nm), and its emission intensity at 423 K still maintains ∼66 % of that at 303 K. All these observations indicate that, by properly doping activators and selecting the excitation wavelength, this borate phosphor displays multicolor tunable emission that may have potential applications in multicolor lighting and color display. © 2024 Elsevier Ltd and Techna Group S.r.l.

关键词： Barium compounds

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Ultrasonic-assisted Hydrothermal Synthesis Autoclaved Bricks from Municipal Solid Waste Incineration Fly Ash and Coal Fly Ash(MSWI-FA)

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Journal of Wuhan University of technology(Materials science) 2025年第2期40卷 439-448页

作者： GUO Xiaolu HU Jiajun WANG Cheng Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education School of Materials Science and EngineeringTongji UniversityShanghai 201804China School of Materials Science and Technology Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic MaterialsShaanxi University of Science and TechnologyXi’an 710021China

Municipal solid waste incineration fly ash(MSWI)is considered as one of the hazardous wastes and requires to be well disposed to reduce the contaminant to the *** to the production of coal fly ash(FA)bricks,MSWI and FA were utilized to prepare autoclaved MSWI-FA block ***-assisted hydrothermal synthesis technology was used for production to explore the effect of ultrasonic *** strength,dry density,and water absorption tests were conducted to determine the optimal ultrasonic *** pre-treating mechanisms were investigated by SEM,FT-IR,particle size analysis,and ***,the micro-analyses of block samples were *** heavy metal leaching concentration was studied to assess the environmental *** experimental results show that the ultrasonic pre-treating time,water bath temperature,and ultrasonic power of 3 h,30℃,and 840 W are the optimal,under which the compressive strength,dry density,and water absorption were 8.14 MPa,1417.48 kg/m^(3),and 0.38,*** is shown that ultrasound destroys the surface structure of raw materials and smaller FA particles embed into *** particle size distribution of pre-treated raw materials mixture is wider and total pore volume is decreased by 6.3%.During hydrothermal processing,more Al-substituted tobermorite crystals are generated,which is the main source of higher strength and smaller pore volume of prepared block *** solidification/stabilization rates of Cu,Pb,and Zn increased by 30.77%,4.76%,and 35.29%,*** study shows a feasible way to utilize MSWI as raw material for construction.

关键词： municipal solid waste incineration fly ash coal fly ash ultrasonic pre-treatment hydrothermal synthesis environmental safety

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Microstructure,microchemistry,and micro-magnetism of dysprosium grain boundary diffused(Nd,Ce)-Fe-B magnets

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Journal of Rare Earths 2025年第3期43卷 556-568,I0005页

作者： Yifei Xiao Lele Zhang Tao Liu Qisong Sun Xiaolong Song Yikun Fang Anhua Li Minggang Zhu Wei Li Division of Functional Materials Central Iron and Steel Research InstituteBeijing 100081China Key Laboratory of Advanced Functional Materials Ministry of Education of ChinaCollege of Materials Science and EngineeringBeijing University of TechnologyBeijing 100124China

The microstructure of(Nd,Ce)-Fe-B sintered magnets with different diffusion depths was characterized by a magnetic force microscope,and the relationship between the magnetic properties and the local structure of grain boundary diffused magnets is *** domains perpendicular to the c-axis(easy magnetization direction)show a typical maze-like pattern,while those parallel to the c-axis show the characte ristics of plate *** significant gradient change is shown in the concentration of Dy with the direction of diffusion from the surface to the *** diffuses along grain boundaries and(Dy,Nd)_(2)Fe_(14)B layer with a high anisotropy field formed around the *** in-situ electron probe micro-analysis/magnetic force microscopy(EPMA/MFM),it is found that the average domain width decreases,and the proportion of single domain grains increases as diffusion depth *** is caused by both the change of concentration and distribution of *** grain boundary diffusion process changes the microstructure and microchemistry inside the magnet,and these local magnetism differences can be reflected by the configuration of the magnetic domain structure.

关键词： Magnetic microstructures (Nd,Ce)-Fe-B Rare earths Magnetic force microscope Grain boundary diffusion process(GBDP) In-situ

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Elements gradient doping in Mn-based Li-rich layered oxides for long-life lithium-ion batteries

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材料科学技术（英文版） 2025年第4期207卷 266-273页

作者： Yinzhong Wang Shiqi Liu Xianwei Guo Boya Wang Qinghua Zhang Yuqiang Li Yulong Wang Guoqing Wang Lin Gu Haijun Yu Institute of Advanced Battery Materials and Devices College of Materials Science and EngineeringBeijing University of TechnologyBeijing 100124China Key Laboratory of Advanced Functional Materials Ministry of EducationBeijing University of TechnologyBeijing 100124China Institute of Advanced Battery Materials and Devices College of Materials Science and EngineeringBeijing University of TechnologyBeijing 100124China Key Laboratory of Advanced Functional Materials Ministry of EducationBeijing University of TechnologyBeijing 100124China Beijing Create Energy & Benefit Future Co. Ltd.Beijing 100176China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China National Center of Electron Microscopy in Beijing School of Materials Science and EngineeringTsinghua UniversityBeijingChina

The cobalt-free Mn-based Li-rich layered oxide material has the advantages of low cost,high energy den-sity,and good performance at low temperatures,and is the promising choice for energy storage ***,the long-cycling stability of batteries needs to be ***,the Mn-based Li-rich cath-ode materials with small amounts of Li2MnO3 crystal domains and gradient doping of Al and Ti elements from the surface to the bulk have been developed to improve the structure and interface *** the batteries with a high energy density of 600 Wh kg-1,excellent capacity retention of 99.7％with low voltage decay of 0.03 mV cycle-1 after 800 cycles,and good rates performances can be ***,the structure and cycling stability of low voltage Mn-based Li-rich cathode materials can be significantly improved by the bulk structure design and interface regulation,and this work has paved the way for developing low-cost and high-energy Mn-based energy storage batteries with long lifetime.

关键词： Mn-based Li-rich layered oxide cathode Li2MnO3 crystal domain Elemental gradient Lithium-ion batteries Energy storage

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