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Recycling of Waste Cathode materials for Lithium-Ion Batteries by Deep Eutectic Solvents

ChemSusChem 2025年

作者： Liu, Yaqin Li, Changhao Zeng, Weihao Wang, Xuanpeng Wang, Juan Li, Dongqi Mu, Shichun State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Co. Ltd. Zhengzhou450001 China

The growing demand for recycling of spent lithium-ion batteries (LIBs) drives the need for sustainable methods to recover strategic metals from cathode materials. Deep eutectic solvents (DESs) emerge as green alternatives to conventional acid leaching, offering advantages in selective extraction, reduced chemical usage, and energy efficiency. This review first elucidates the formation mechanisms of DESs and investigates how the parameter optimization of their physicochemical properties (e.g., reducibility, acidity, viscosity) enhances metal recovery rates. Following an in-depth discussion on cathode material leaching processes using DESs, mainstream recovery methods for leaching products and cutting-edge advancements in direct regeneration of cathode active materials are comprehensively summarized. Finally, targeted strategies to address the current challenges in the application of DESs are proposed and an outlook on the future application of DESs in the field of LIB recovery is provided. In summary, this review provides valuable insights into the overall understanding of DESs, aiming to offer references in high-efficiency recycling of LIBs. © 2025 Wiley-VCH GmbH.

关键词： Recycling

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Significantly enhanced energy storage performance of BaTiO3-based amorphous thin films through the synergistic function of variable valence ions

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Ceramics International 2025年

作者： Yao, Yiming Tao, Cheng Huang, Rui Zhang, Jian Zhang, Tianyu Hao, Hua Yao, Zhonghua Liu, Hanxing Cao, Minghe State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China International School of Materials Science and Engineering Wuhan University of Technology Wuhan430070 China

Amorphous thin films have been widely studied due to the excellent breakdown strength in recent years. However, their practical application faces significant challenges primarily caused by low polarization and energy density. Herein, we propose a multi-variable valence ions doping strategy to enhance the energy storage performance of BaTiO3-based amorphous thin films. The Ba0.92Bi0.08Ti1-x(Ni0.5Mn0.5)xO3(BBTNM) amorphous thin films were fabricated by chemical solution deposition method. In addition, the synergistic effects of variable valence ions (Ni, Mn) on the microstructure, dielectric and energy storage properties of the films were systematically studied. Compared with the undoped Ba0.92Bi0.08TiO3(BBT) film, the polarization and energy storage performance of the BBTNM film have been significantly improved owing to the defect dipoles generated by the incorporation of variable valence ions. Notably, a high discharge energy density of 93.3 J/cm3 together with an energy efficiency of 83 % could be achieved in the x = 0.08 film at 7.05 MV/cm. Simultaneously, the film exhibits excellent thermal stability within the range of 20 °C–160 °C, and still maintains favorable performance after 105 cycles. Overall, this work introduces a new approach for designing BaTiO3-based thin film materials. © 2025

关键词： Amorphous films

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Synergistic Effects of Steel Slag and Wet Grinding on Ambient Cured Ground Granulated Blast Furnace Slag Activated by Sodium Sulfate

SSRN

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SSRN 2022年

作者： Li, Yubo Zhang, Quangang Yang, Qifan He, Xingyang Su, Ying Tan, Hongbo Liu, Jing School of Civil Engineering Architecture and Environment Hubei University of Technology Wuhan430070 China Building Waterproof Engineering and Technology Research Center of Hubei Province Hubei University of Technology Wuhan430068 China State Key Laboratory of Silicate Materials for Architecture Wuhan University of Technology Wuhan430070 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China

Alkali-activated materials (AAM) has been increasing attract attention for low energy consumption and low emission. Weak base AAM is a potential approach to further reduce energy consumption and environment friendly. However, low early strength and slow strength development due to low alkalinity of the activator limit the application in engineering. In this study, wet grinding was performed to promote the reaction activity of ground granulated blast furnace slag (GGBFS). In order to further accelerate hydration reaction and shorten setting time, steel slag (SS) was used as partial-substitution precursor. Wet-grinded SS-GGBFS (WSS-GS) binary binders activated by sodium sulfate were designed. The propertied of WSS-GS slurry was analyzed by pH values, conductivity and ICP test. The performances of WSS-GS pastes that contained different dosages SS (15%, 30% and 45%) and various activator concentration (1%, 3% and 5% Na2O-E) cured in ambient temperature were explored by rheological properties, setting time, compressive strength, hydration heat, XRD, TG-DTA and SEM-EDS tests. The results showed that the property of WSS-GS slurry was improved by addition of SS, early hydration reaction and compressive strength were promoted greatly. However, excess SS was harmful to strength development in later age for quantity reduction of hydration products and microstructure deterioration. 15%SS-85%GGBFS activated by 3% Na2O-E sodium sulfate was verified with an desired performance, initial setting time was shorten by 60% and 1 d compressive strength was increased by 91%. These results provide guidance on designing of weak base-activated slag system and utilization of mass SS. © 2022, The Authors. All rights reserved.

关键词： Sodium sulfate

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Recent advances in g-CN-based heterojunction photocatalysts

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Journal of materials Science & technology 2020年第21期56卷 1-17页

作者： Yunfeng Li Minghua Zhou Bei Cheng Yan Shao College of Environmental and Chemical Engineering Xi’an Polytechnic UniversityXi’an710000China Hubei Key Laboratory of Wudang Local Chinese Medicine Research Hubei University of MedicineShiyan 442000China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Department of Outpatient Taihe HospitalHubei University of MedicineShiyan 442000China

Semiconductor heterojunction photocatalysts have received much concern due to their great application prospect in solar energy utilization and *** construction of heterostructure with two or more semiconductor materials can integrate the advantages of multi-components to simultaneously improve the photo-induced charges separation,extend visible light absorption range and retain the high redox ability of ***,constructing of g-C3 N4-based heterostructure has become a hot focus due to the multiple merits of g-C3 N4,such as facile synthesis,high stability,unique optical and electronic *** review tries to give a comprehensive introduction and provide the possible tendency in design and fabrication of g-C3 N4-based heterojunction photocatalysts,especially in rational synthesis of type-II heterojunction,direct Z-scheme heterojunction,new type of S-scheme heterojunction,p-n heterojunction and Schottky ***,the special charges transfer mechanisms of g-C3 N4-based heterojunctions are discussed and their potential applications in photocatalytic water splitting,photo-degradation of contaminants and photo-reduction of CO2 into fuels are also ***,we attempt to propose some crucial issues based on the current research,which should be further investigated and resolved in this interesting research area.

关键词： Photocatalysis g-C3N4 Heterojunction Z-scheme S-scheme

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Fast and stable Mg^2+ intercalation in a high voltage NaV2O2(PO4)2F/rGO cathode material for magnesium-ion batteries

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Science China materials 2020年第9期63卷 1651-1662页

作者： Junjun Wang Shuangshuang Tan Guobin Zhang Yalong Jiang Yameng Yin Fangyu Xiong Qidong Li Dan Huang Qinghua Zhang Lin Gu Qinyou An Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Institute of Physics Chinese Academy of SciencesBeijing 100190China

Sluggish kinetics of Mg^2+intercalation and low working potential seriously hinder the development of highenergy-density magnesium-ion batteries(MIBs).Hence developing cathode materials with fast Mg^2+diffusion and high working voltage is a key to overcome the obstacles in ***,a tetragonal NaV2O2(PO4)2 F/reduced graphene oxide(r GO)is proposed as an effective Mg^2+host for the first *** exhibits the highest average discharge voltage(3.3 V ***^2+/Mg),fast diffusion kinetics of Mg^2+with the average diffusivity of 2.99×10^-10 cm^2s^-1,and ultralong cycling stability(up to 9500 cycles).The Mg^2+storage mechanism of NaV2O2(PO4)2 F/r GO is demonstrated as a single-phase(de)intercalation reaction by in situ X-ray diffraction(XRD)*** functional theory(DFT)computations further reveal that Mg^2+ions tend to migrate along the a direction.X-ray absorption near edge structure(XANES)demonstrates a decrease in the average valence of vanadium,and the local coordination environment around vanadium site is highly conserved after ***,the assembled NaV2O2(PO4)2 F//Mg0.79NaTi2(PO4)3 Mg-ion full cell exhibits high power and energy densities,which indicates that NaV2O2(PO4)2 F/r GO owns potential for practical *** work achieves a breakthrough in the working voltage of cathode materials for MIBs and provides a new opportunity for high-energy-density MIBs.

关键词： high-voltage fast kinetics MIBs fluorophosphate full cell

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Numerical Investigation of Effect of Mechanical Compression on the Transport Properties of Fuel Cell Microporous Layer Using a Pore-Scale Model

SSRN

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SSRN 2023年

作者： Zhang, Heng Hu, Hao Sarker, Mrittunjoy Shao, Xuanyu Zhan, Zhigang Sui, Pang-Chieh Chuang, Po-Ya Abel School of Low-Carbon Energy and Power Engineering China University of Mining and Technology Xuzhou221116 China Automobile Technology and Service College Wuhan City Polytechnic Wuhan430064 China Mechanical Engineering University of California Merced MercedCA95343 United States State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Hubei430070 China Wuhan University of Technology China

The microporous layer (MPL) plays an important role in water and thermal management of proton exchange membrane fuel cells (PEMFCs). An in-depth investigation of the mechanical compression effect on transport properties in the MPL can help optimize cell performance and durability. In this work, the microstructure of the MPL is numerically reconstructed and the finite element method is applied to simulate mechanical behavior. In addition, the distribution of stress-strain, porosity, and pore size in the MPL under ten different levels of mechanical compression strains are studied. Lastly, the pore-scale model is employed to investigate the effective transport properties of the MPL as a function of compression strain. The analysis reveals that as the MPL strain increases from 0% to 40%, there is a 29% decrease in porosity, a 50% reduction in average pore diameter, a 60% decrease in effective gas diffusivity, a 100% increase in tortuosity, and an 80% increase in electrical and thermal conductivity. With the escalation of mechanical compression, both the magnitude and uniformity of stress-strain-displacement concurrently rise. This phenomenon is most prominently observed on the MPL surface. Mechanical compression strains below 20% exhibit a lesser impact on transport properties. Beyond this threshold, exceeding the 20% compression strain point, mechanical stress assumes a critical role in influencing MPL transport properties. This study offers a comprehensive overview of the impact of mechanical stress on the internal stress-strain relationship and transport properties of MPLs. The results provide valuable guidance for future MPL design and optimization of fuel cell performance. © 2023, The Authors. All rights reserved.

关键词： Pore size

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In-situ S/TEM Investigations of Domain and Phase Transitions in Polarized Cu2Se

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Microscopy and Microanalysis 2024年第SUPPLEMENT_1期30卷

作者： Bai, Hui Luo, Hao Yang, Dongwang Wu, Jinsong State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan China Nanostructure Research Center Wuhan University of Technology Wuhan China

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Cu在纳米结构PtNi上的表面可控锚定用于高效海水产氢

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中国科学：材料科学（英文版） 2023年第10期66卷 3887-3894页

作者：杨雄肖宇轩陈江波余菲田歌蒲福飞章嵩 Susana I.Córdoba de Torresi Mark D.Symes Christoph Janiak 阳晓宇 State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & Shenzhen Research Institute & International School of Materials Science and Engineering and Processing Wuhan University of Technology Wuhan 430070 China School of Chemical Engineering and Technology Sun Yat-sen University Zhuhai 519082 China Instituto de Química Universidade de Sao Paulo Av. Prof. Lineu Prestes 748 05508-080 São Paulo SP Brazil WestCHEM School of Chemistry University of Glasgow Glasgow G12 8QQ United Kingdom Institut für Anorganische Chemie und Strukturchemie Heinrich-Heine-Universität Düsseldorf Düsseldorf 40204 Germany

表面组分调控及建立多功能活性位点是提高Pt基催化剂性能的有效途径.通过将Cu可控地锚定在纳米结构PtNi表面(Cu/PtNi)可以精确控制Pt基催化剂表面元素的化学计量比,其中亲氧的非贵金属Ni能加速水的解离,Pt由于具有适中的H吸附能,可有效... 详细信息

表面组分调控及建立多功能活性位点是提高Pt基催化剂性能的有效途径.通过将Cu可控地锚定在纳米结构PtNi表面(Cu/PtNi)可以精确控制Pt基催化剂表面元素的化学计量比,其中亲氧的非贵金属Ni能加速水的解离,Pt由于具有适中的H吸附能,可有效地将游离态的H转换成氢气,Cu由于具有正的H吸附吉布斯自由能(AGH*),有助于H2的脱附.其中具有最优组分比例的Cu/PtNi电催化剂在海水中表现出优异的电化学析氢活性和稳定性,在碱性海水中,10 mA cm-2下的过电位为23 mV(在70 mV过电位下,其质量活性是商用Pt/C的5倍).同时,密度泛函理论结果进一步验证了在碱性海水中Pt,Ni和Cu多功能金属活性位点可提高HER的H2O解离、H*吸附和H2脱附的过程.

关键词： Cu/PtNi seawater hydrogen evolution surface adjustment multifunction sites hierarchical structure

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Densification of hard β-boron based ceramics by spark plasma sintering at larger heating rate

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Journal of the American Ceramic Society 2025年

作者： Xiong, Zhengang Zou, Ji Ma, Haibin Ji, Wei Wang, Weimin Fu, Zhengyi State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan China Hubei Longzhong Laboratory Wuhan University of Technology Xiangyang China SIAMC Advanced Materials Co. Ltd Huzhou China

The densification process of β-boron via spark plasma sintering (SPS) with controlled heating rates (50–300°C/min) was investigated at different temperatures from 1000°C to 1800°C. Systematic characterization reveals that enhanced heating rates (300°C/min) effectively suppress the volatilization of B2O3 impurities, promoting in situ formation of boron-rich oxide (B6O) through reactions between boron and B2O3. The amount of the retained B6O phase in the boron matrix increased with heating rates, which effectively accelerate the densification behavior of boron, achieving near-full density (2.33 g/cm3) with residual porosity −1·K−1 at room temperature and 5.8 W·m−1·K−1 at 873 K), the latter was governed by intensified phonon–phonon scattering with less contributions from electrons ( © 2025 The American Ceramic Society.

关键词： Temperature distribution

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Achieving superior performance in thermoelectric Bi_(0.4)Sb_(1.6)Te_(3.72)by enhancing texture and inducing high-density line defects

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Science China materials 2021年第6期64卷 1507-1520页

作者： Junhao Qiu Yonggao Yan Hongyao Xie Tingting Luo Fanjie Xia Lei Yao Min Zhang Ting Zhu Gangjian Tan Xianli Su Jinsong Wu Ctirad Uher Hongyi Jiang Xinfeng Tang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Department of Chemistry University of NorthwesternEvanstonIllinois 60208United States Nanostructure Research Center Wuhan University of TechnologyWuhan 430070China Department of Physics University of MichiganAnn ArborMichigan 48109United States

Miniaturization of efficient thermoelectric(TE)devices has long been hindered by the weak mechanical strength and insufficient heat-to-electricity conversion efficiency of zone-melted(ZM)***,we successfully prepared a robust high-performance p-type Bi_(0.4)Sb_(1.6)Te_(3.72)bulk alloy by combining an ultrafast thermal explosion reaction with the spark plasma sintering(TER-SPS)*** is observed that the introduced excess Te not only enhances the(00l)-oriented texture to ensure an outstanding power factor(PF)of 5 mW m^(−1)K^(−2),but also induces extremely high-density line defects of up to 10^(11)–10^(12)cm^(−2).Benefiting from such heavily dense line defects,the enhancement of the electronic thermal conductance from the increased electron mobility is fully compensated by the stronger phonon scattering,leading to an evident net reduction in total thermal *** a result,a superior ZT value of~1.4 at 350 K is achieved,which is 40%higher than that of commercial ZM ***,owing to the strengthening of grain refinement and highdensity line defects,the mechanical compressive stress reaches up to 94 MPa,which is 154%more than that of commercial single *** research presents an effective strategy for the collab.rative optimization of the texture,TE performance,and mechanical strength of Bi2Te3-based *** such,the present study contributes significantly to the future commercial development of miniature TE devices.

关键词： thermoelectric Bi_(2)Te_(3) texture line defect micro device

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