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Efficient separation of layered oxide cathode materials and Al collectors in spent lithium-ion batteries

Journal of Cleaner Production 2025年 510卷

作者： Fu, Zhiyue Zeng, Weihao Wang, Juan Li, Yu Mu, Shichun State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Hubei Wuhan430070 China

With the growing scale of the lithium-ion battery market, the number of retired lithium-ion batteries (LIBs) increase exponentially. The recycling of spent LIBs not only reduces environmental pressure but also achieves resource recycling, making the necessity of recycling indispensable. Wherein the separation of cathode active materials from current collectors is a key step in the recycling process of spent LIBs, which directly affects the recycling efficiency and the reuse value of materials. Moreover, by recycling spent LIBs and extracting valuable metals from them, it is possible to alleviate the shortage of resources and realize the sustainable economic development. Among cathode materials, layered lithium nickel cobalt manganese oxide (NCM) has the highest recycling value as it contains more valuable metals such as lithium (Li), nickel (Ni), cobalt (Co) and manganese (Mn). Therefore, in this review we mainly summarize and analyze the latest research progress in the field of NCM cathode material separating from aluminum (Al) foil by focusing on its methods, principles, advantages and limitations. Also, it provides solutions to existing challenges, which have important reference significance to promote the sustainable recycling and use of spent LIBs. © 2025 Elsevier Ltd

关键词： Recycling

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Effect of Molecular Weight on Thermoelectric Performance of P3HT Analogues with 2-Propoxyethyl Side Chains

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Journal of Wuhan University of technology(materials Science) 2024年第2期39卷 268-281页

作者：董得福 WANG Wei ZHAN Chun LI Chenglong ZHOU Qisheng 肖生强 State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

By replacing hexyl chains in poly(3-hexylthiophene)(P3HT)with 2-propoxyethyls,four poly(3-(2-propoxyethyl)thiophene)(P3POET)homopolymers with comparable polydispersity indexes(PDI)and regioregularities were prepared herein in addition with step increment of about 7 kDa on numberaverage molecular weight(M_(n))from around 11 to 32 kDa(accordingly denoted as P11k,P18k,P25k,and P32k).When doped in film by FeCl_(3)at the optimized conditions,the maximum power factor(PF_(max))increases greatly from 4.3μW·m^(-1)·K^(-2)for P11k to 8.8μW·m^(-1)·K^(-2)for P18k,and further to 9.7μW·m^(-1)·K^(-2)for P25k,followed by a slight decrease to 9.2μW·m^(-1)·K^(-2)for *** close Seebeck coefficients(S)at PF_(max)are observed in these doped polymer films due to their consistent frontier orbital energy levels and Fermi *** main contribution to this PF_(max)evolution thus comes from the corresponding conductivities(σ).Theσvariation of the doped films can be rationally correlated with their microstructure evolution.

关键词： conjugated polymer molecular weight microstructure thermoelectric performance

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A novel, green method for the preparation of biodegradable PLA membranes without pore-forming agent

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Journal of Water Process Engineering 2025年 74卷

作者： Cai, Jiayi Han, Zunbo Sun, Yinjie Chen, Haoran Li, Haoran Wang, Ruoxi Ji, Yanhong He, Benqiao State Key Laboratory of Separation Membranes and Membrane Processes School of Material Science and Engineering Tiangong University Tianjin 300387 China Cangzhou Institute of Tiangong University Cangzhou 061000 China Science and Technology on Advanced Functional Composite laboratory Aerospace Research Institute of Materials & Processing Technology Beijing 100076 China

Polylactic acid (PLA) membranes have attracted significant attention in separation technologies due to their biodegradable properties. This study proposes a novel and eco-friendly pore-forming strategy for fabricating PLA membranes by triggering the in situ reaction between CaCO₃ nanoparticles and citric acid during the phase inversion process. Unlike conventional methods requiring synthetic pore-forming additives, this approach leverages the sacrificial role of CaCO₃ and the reaction-generated CO₂ nanobubble to synergistically construct a porous structure. The overall porosity increases from 70.2 % (pristine PLA membrane, M0) to 85.6 % (membrane prepared from a 6 wt% CaCO₃-containing casting solution, M6), while pure water flux rises dramatically from 20.1 L·m⁻²·h⁻¹ to 218.3 L·m⁻²·h⁻¹, with bovine serum albumin rejection maintained at 96.8 %. Furthermore, the flux recovery rate improves from 53.2 % (M0) to 71.2 % (M6), demonstrating enhanced antifouling properties. This entirely green fabrication process, employing only natural CaCO₃ and citric acid, represents a significant advancement in sustainable membrane technology and provides a viable route for developing high-performance biodegradable separation membranes. © 2025 Elsevier Ltd

关键词： Biodegradable membrane CaCO3 nanoparticles Citric acid Polylactic acid

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Hyaluronic acid methacrylate/laponite hydrogel loaded with BMP4 and maintaining its bioactivity for scar-free wound healing

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Regenerative Biomaterials 2023年第1期10卷 690-701页

作者： Likun Chang Yulong Xu Zhouying Wu Yichun Shao Dan Yu Wenyue Yang Liyuan Ye Xinyu Wang Binbin Li Yixia Yin State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

Scar-free wound healing is a challenging process due to the excessive deposition of extracellular matrix and *** overcome this issue,hydrogels with superior biochemical and mechanical properties have been used in combination with medicinal compounds as wound *** this study,a novel composite hydrogel consisting of double-crosslinked photocurable hyaluronic acid methacrylate(HAMA)and Laponite(Lap)loaded with bioactive bone morphogenetic protein 4(BMP4)was developed and thoroughly characterized for its properties such as degradation,morphology,porosity,compression,skin adhesion and load *** effect of the HAMA/Lap/BMP4 hydrogel was evaluated through both in vitro and in vivo *** the in vivo rabbit ear-scar model,the HAMA/Lap/BMP4 hydrogel dressing was found to reduce scar-related expressions ofα-SAM and decrease the ratio of collagenΙ/III in wounded ***,histopathological examination indicated that the HAMA/Lap/BMP4 hydrogel-treated groups exhibited enhanced wound repair and increased levels of collagen maintenance compared to other standard groups,ultimately leading to scarless wound ***,this sustained-release photocurable HAMA/Lap/BMP4 hydrogel offers a therapeutic approach for scar-free wound healing.

关键词： HAMA/Lap/BMP4 photocurable nanocomposite hydrogel sustained release scar-free wound healing

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Microstructure Regulation and Combustion Performance Optimization of PVDF/Al Composite Powder by Non-covalent Functionalized Graphenes

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Journal of Wuhan University of technology(materials Science) 2024年第4期39卷 904-911页

作者：易卓然 DENG Haoyuan QIN Mei 孙一 LUO Guoqiang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

Graphene prepared by non-covalent modification of sulfonated poly(ether-ether-ketone)(SPG)was combined with polyvinylidene fluoride(PVDF)/Al to improve the PVDF/Al thermal conductivity while reducing the effect of the thermal resistance at the graphene-polymer *** regulation rule of SPG with different contents on the energy release of fluorine-containing system was *** the content of SPG is 4%,the peak pressure and rise rate of SPG/PVDF/Al composite powder during ignition reach the maximum of 4845.28 kPa and 8683.58 kPa/*** the content of SPG is 5%,the PVDF/Al composite powder is completely coated by SPG,and the calorific value of the material reachs the maximum of 29.094 kJ/*** the design and micro-control of the composite powder,the calorific value of the material can be effectively improved,but the improvement of the mass release rate still depends on the graphene content and surface modification state.

关键词： energetic materials PVDF/Al composites graphene modification energy release combustion

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Electromagnetic parameters and microwave-absorption properties for the mixtures of mechanically milled spherical and flaky carbonyl iron powders

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Acta Metallurgica Sinica(English Letters) 2012年第3期25卷 201-206页

作者： Jinghua HE Wei WANG Aimin WANG Jianguo GUAN State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan Universityof TechnologyWuhan 430070China

The electromagnetic parameters were measured for the mixtures of mechanical milled carbonyl iron powders （CIPs） with different mass ratios of spheroid-like particles to flake-shape particles. The results indicate that mixing the sphere-like CIP particles with flake-shaped CIPs can be used to adjust effectively the electromagnetic parame- ters and enhance the absorption property in high frequency. In addition, a theoretic simulation based on the principle of superposition was carried out and compared with the microwave measurement results, indicating that the simple principle of superpo- sition can not reflect truly the internal interaction mechanism in the composites with different particle shapes.

关键词： Carbonyl iron Mechanical milling Electromagnetic property Microwave-absorption property

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Control of interfacial reaction and defect formation in Gd/Bi_(2)Te_(2.7)Se_(0.3) composites with excellent thermoelectric and magnetocaloric properties

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Chinese Physics B 2024年第8期33卷 474-481页

作者：薛天畅魏平刘承姗李龙舟朱婉婷聂晓蕾赵文俞 State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

The method to combine thermoelectric(TE)and magnetocaloric(MC)cooling techniques lies in developing a new material that simultaneously possesses a large TE and good MC cooling *** this work,using n-type Bi_(2)Te_(2.7)Se_(0.3)(BTS)as the TE base material and Gd as the second-phase MC material,Gd/BTS composites were prepared by the spark plasma sintering *** the composites,interfacial reaction between Gd and BTS was identified,resulting in the formation of Gd Te,which has a large impact on the electron concentration through the adjustment of defect *** MC/TE composite containing 2.5 wt%Gd exhibited a ZT value of 0.6 at 300 K,essentially retaining the original TE performance,while all the composites largely maintained the excellent MC performance of *** work provides a potential pathway to achieving high performance in MC/TE composites.

关键词： thermo-electro-magnetic energy conversion materials interfacial reaction thermoelectric performance magnetic entropy change

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MECHANICAL PROPERTIES AND CURING KINETICS OF EPOXY RESINS CURED BY VARIOUS AMINO-TERMINATED POLYETHERS

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Chinese Journal of Polymer Science 2010年第6期28卷 961-969页

作者： Li-ying Zhao Jian-guo Guan Hui-ru Ma Zhi-gang Sun State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

A high performance thermosetting epoxy resin crosslinkable at room temperature was obtained via directly moulding diglycidyl ether of bisphenol A（DGEBA） and flexibleα,ω-bisamino（n-alkylene）phenyl terminated poly（ethylene glycol）.The influences of the n-alkylene inserted in aminophenyl of flexible amino-terminated polythers（ATPE） on the mechanical properties,fractographs and curing kinetics of the ATPE-DGEBA cured products were *** results show that the insertion of n-alkylene group into the aminophenyl group of the ATPE,on one hand,can significantly increase the strain relaxation rate and decrease glass transition temperature of the ATPE-DGEBA cured products,resulting in slight decrease of the Young’s modulus and tensile strength,and significant increase of the toughness and elongation of the ATPE-DGEBA cured *** the other hand,it can remarkably enhance the reactivity of amine with epoxy,much accelerating the curing rate of the ATPE-DGEBA *** activation energy of DGEBA cured by BAPTPE,BAMPTPE and BAEPTPE was 53.1,28.5 and 25.4 kJ·mol;,*** as-obtained ATPE-DGEBA cured products are homogeneous, transparent,and show excellent mechanical properties including tensile strength and *** they are promising to have important applications in structure adhesives,casting bulk materials,functional coatings,cryogenic engineering, damping and sound absorbing materials.

关键词： Epoxy resin Amine-terminated polyether Fractography Curing kinetics Mechanical properties

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Amine-assisted synthesis of FeS@N-C porous nanowires for highly reversible lithium storage

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Nano Research 2018年第12期11卷 6206-6216页

作者： Xiujuan Wei Xin Tan Jiasheng Meng XuanpengWang Ping Hu Wei Yang Shuangshuang Tan Qinyou An Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

Iron sulfide is an attractive anode material for lithium-ion batteries (LIBs) due to its high specific capacity, environmental benignity, and abundant resources. However, its application is hindered by poor cyclability and rate performance, caused by a large volume variation and low conductivity. Herein, iron sulfide porous nanowires confined in an N-doped carbon matrix (FeS@N-C nanowires) are fabricated through a simple amine-assisted solvothermal reaction and subsequent calcination strategy. The as-obtained FeS@N-C nanowires, as an LIB anode, exhibit ultrahigh reversible capacity, superior rate capability, and long-term cycling performance. In particular, a high specific capacity of 1,061 mAh·g⁻¹ can be achieved at 1 A·g⁻¹ after 500 cycles. Most impressively, it exhibits a high specific capacity of 433 mAh·g⁻¹ even at 5 A·g⁻¹. The superior electrochemical performance is ascribed to the synergistic effect of the porous nanowire structure and the conductive N-doped carbon matrix. These results demonstrate that the synergistic strategy of combining porous nanowires with an N-doped carbon matrix holds great potential for energy storage.

关键词： iron sulfide N-doped carbon matrix porous nanowires lithium-ion batteries superior cycling stability

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Constructing a stable cobalt-nitrogen-carbon air cathode from coordinatively unsaturated zeolitic-imidazole frameworks for rechargeable zinc-air batteries

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Nano Research 2022年第7期15卷 5895-5901页

作者： Tingting Wang Meng Liu Somboon Chaemchuen Jichao Wang Ye Yuan Cheng Chen Ang Qiao Francis Verpoort Zongkui Kou State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

Zeolitic-imidazole frameworks(ZIFs)derivations have widely emerged as an efficient air cathode of zinc-air batteries(ZABs)due to excellent bifunctional oxygen electrocatalysis ***,they are not stable enough for long-term operation of rechargeable ZABs because of weak association with current collector,especially under bending conditions for flexible ZAB ***,we show that by purposely designing coordinatively unsaturated ZIFs via a facile morphology regulation,which can be chemically linked on acid-treated carbon cloth,a stable Co-N-C air cathode is therefore derived where Co nanoparticles(NPs)are uniformly confined within the Co-N-C matrix on carbon cloth(Co/Co-N-C/CC).Specifically,when without being stabilized from carbon cloth,the pyrolysis of ZIFs with different unsaturated coordination levels has a negligible impact on the bifunctional oxygen-catalyzed *** optimal Co/Co-N-C/CC catalyst assembled ZAB possesses a large open circuit voltage of 1.415 V and a high peak power density of 163 mW·cm^(−2) as well as excellent cycling durability upon 630 discharge–charge cycles with 61%voltage efficiency remained,largely exceeding those of a benchmark Pt/C-IrO_(2) catalyst assembled *** synergy between Co NPs and active Co-N-C sites via electronic interaction induces the outstanding bifunctional oxygen-catalyzed activity and cathode *** present work highlights the importance of unsaturated coordination structures in ZIFs precursors for the performance of derived nanostructures in integrated electrodes.

关键词： coordinatively unsaturated zeolitic-imidazole frameworks(ZIFs) cobalt-nitrogen-carbon bifunctional air electrodes zincair battery flexible electrode

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