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A General Synthesis Method for Patterning PEDOT toward Wearable Electronics and bioelectronics

Research 2025年第1期7卷 205-214页

作者： Wanke Cheng Zihao Zheng Xiaona Li Ying Zhu Suqing Zeng Dawei Zhao Haipeng Yu Key Laboratory of Bio-based Material Science and Technology of Ministry of Education Northeast Forestry UniversityHarbinChina Key Laboratory on Resources Chemicals and Materials of Ministry of Education Shenyang University of Chemical TechnologyShenyangChina

The conductive polymer poly-3,4-ethylenedioxythiophene(PEDOT),recognized for its superior electrical conductivity and biocompatibility,has become an attractive material for developing wearable technologies and ***,the complexities associated with PEDOT's patterning synthesis on diverse substrates persist despite recent technological *** this study,we introduce a novel deep eutectic solvent(DES)-induced vapor phase polymerization technique,facilitating nonrestrictive patterning polymerization of PEDOT across diverse *** controlling the quantity of DES adsorbed per unit area on the substrates,PEDOT can be effectively patternized on cellulose,wood,plastic,glass,and even *** resultant patterned PEDOT exhibits numerous benefits,such as an impressive electronic conductivity of 282 S·m-1,a high specific surface area of 5.29 m^(2)·g-1,and an extensive electrochemical stability range from-1.4 to 2.4 V in a phosphate-buffered *** underscore the practicality and diverse applications of this DES-induced approach,we present multiple examples emphasizing its integration into self-supporting flexible electrodes,neuroelectrode interfaces,and precision circuit repair methodologies.

关键词： deep eutectic wearable technologies electrical conductivity deep eutectic solvent bioelectronics vapor phase polymerization PEDOT wearable electronics

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Effect of Ti_(p) Content on the Work Hardening and Softening Behavior of Mg-Zn-Ca Alloy

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Acta Metallurgica Sinica(English Letters) 2024年第3期37卷 551-560页

作者： Jin-Kai Zhang Cui-Ju Wang Yi-Dan Fan Chao Xu Kai-Bo Nie Kun-Kun Deng Shanxi Key Laboratory of Advanced Magnesium-Based Materials College of Materials Science and EngineeringTaiyuan University of TechnologyTaiyuan 030024China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China

The Ti_(p)/ZX60 composites with different Ti_(p) contents were prepared by semi-solid stirring *** extrusion,the microstructure,work hardening and softening behavior of the Ti_(p)/ZX60 composites were analyzed compared with the ZX60(Mg-6Zn-0.2Ca)*** results showed that the addition of Ti_(p) could not only promote the nucleation of dynamic recrystallized(DRXed)grains,but also be propitious to the refinement of DRXed *** increasing Ti_(p) content,the size of DRXed grains decreased accompanied with increasing volume fraction of DRXed *** the Ti_(p) content increased to 15 vol.%,the average size and volume fraction of DRXed grains reached to~0.32μm and 93.2%,***,both the strength and elongation were improved by the addition of Ti_(p).With increasing content of Ti_(p),a substantial increase in the strength was achieved with little change in the ***,the elongation decreased sharply when the Ti_(p) content further increased to 15 vol.%.The addition of Ti_(p) led to an increase in the work hardening rate,which gradually increased with increasing Ti_(p) ***,the softening rate did not demonstrate the same tendency with increasing Ti_(p) *** the conventional ceramic particles,the Ti_(p) can be deformed in coordination with the matrix alloy,which imparted a higher softening rate to the matrix *** though the softening rate improved as the Ti_(p) content increased from 5 to 10 vol.%,it dropped deeply as the Ti_(p) content increased to 15 vol.%owing to the fracture of Ti_(p) during extrusion.

关键词： Titanium particle content Particle reinforced magnesium matrix composites Work hardening Softening behavior Mechanical properties

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A polyelectrolyte-induced highly processable pigment-like photonic crystal ink

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Progress in Natural science:materials International 2024年第5期34卷 1049-1056页

作者： Guangxin Tan Wenxin Fan Zhihong Nie Kunyan Sui State Key Laboratory of Bio-Fibers and Eco-Textiles College of Materials Science and Engineering Shandong Collaborative Innovation Center of Marine Biobased Fibers and Ecological Textiles Institute of Marine Bio-based Materials Qingdao University School State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Fudan University

Developing a straightforward strategy for constructing highly processable photonic crystals(PCs) is crucial for various applications, yet remains a challenge. Here, we present a simple polyelectrolyte-induced self-assembly strategy for producing novel photonic crystal(PC) inks with outstanding processing flexibility by adding the polyelectrolytes into the ultralow concentration of colloidal nanoparticle solution. The polyelectrolyte can cover the nanoparticles through the hydrogen bond interaction to induce the aggregation and mutual repulsion of them simultaneously, enabling the self-assembly of ultralow concentration(0.01–1.0 v/v%) of nanoparticles into shortrange ordered arrays with angle-independent structural colors. The resulting PC inks present unprecedented pigment-like color modulation capacity, as well as ultrahigh freedom in processing methods due to the fact that the rheological behaviors of PC inks can be widely adjusted by varying the properties of ***, the PC inks can be easily shaped into complex and exquisite multicolor patterns/3D structures using various techniques, including injection molding, writing, drawing, and 3D printing. This general approach paves the way for quick and scalable production of advanced PC materials deeply required in practical applications.

关键词： Polyelectrolyte Photonic crystals Self-assembly Multicolor patterns Processing flexibility

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Microstructure and Mechanical Properties of Al_(2)O_(3p)/AZ91 Magnesium Matrix Laminated Material Adjusted by Freezing Temperature

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Acta Metallurgica Sinica(English Letters) 2024年第11期37卷 1819-1829页

作者： Ze-Xin Bai Kun-Kun Deng Ze-Qi Du Kai-Bo Nie Chao Xu Quan-Xin Shi Shanxi Key Laboratory of Advanced Magnesium-based Materials College of Materials Science and EngineeringTaiyuan University of TechnologyTaiyuan 030024China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China

The Al_(2)O_(3)laminated preforms with different layers thickness were prepared by freezing casting in present ***,the Al_(2)O_(3p)/AZ91 magnesium matrix laminated materials were obtained by infiltrating the AZ91 alloy melt into the Al_(2)O_(3)laminated preform based on pressure infiltration ***,the influence of freezing temperature on the microstructure,mechanical properties and fracture behavior of magnesium-based laminates was *** results indicated that with the decrease of freezing temperature,the thickness of Al_(2)O_(3)layers decreases gradually,the number of layers increases obviously,and the interlayers spacing *** with the decrease of interlayers spacing,the size of Mg17Al12 phase precipitated in the AZ91 alloy layers was refined,and the compression strength and strain were both improved *** micro-cracks initiated in Al_(2)O_(3)layers during loading process,while the AZ91 layers could effectively suppress the initiation and propagation of ***,the changing layers structure influenced by the decrease of freezing temperature had significant inhibiting effect on the initiation and propagation of micro-cracks,which endowed the Al_(2)O_(3p)/AZ91 magnesium matrix laminated materials with better strength and ***,the best compression properties of Al_(2)O_(3p)/AZ91 magnesium matrix laminated materials could be obtained at the freezing temperature of−50℃,the compression strength and elastic modulus of which were the 160%and 250%of monolithic AZ91 alloy,respectively.

关键词： bio-inspired composites Freeze-casting Mechanical properties Metal matrix composites

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Magnetic field induced synthesis of（Ni, Zn）Fe2O4 spinel nanorod for enhanced alkaline hydrogen evolution reaction

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Progress in Natural science:materials International 2023年第2期33卷 172-177页

作者： Mingkun Xia Yan zhang Jiangyue Xiao Peng Zhao Zhongjun Hou Fanglin Du Dawei Chen Shuo Dou College of Material Science and Engineering Qingdao University of Science and Technology Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education Northeast Forestry University

Recently, the introduction of external fields（light, thermal, magnetism, etc.） during electrocatalysis reactions gradually becomes a new strategy to modulate the catalytic activities. In this work, an external magnetic field was innovatively employed for the synthesis progress of（Ni, Zn）Fe2O4spinel oxide(M-（Ni, Zn）Fe2O4). Results indicated the magnetic field（≤250 m T） would affect the morphology of catalyst due to the existing Fe ions, inducing the M-（Ni, Zn）Fe2O4nanosphere particles to be uniform and coral-like nanorods. In addition, the electronic structure of the catalyst was regulated by the valence state of Fe, changing the bonding of metal to oxygen atoms in different spinel sites. The results manifested that the M-（Ni, Zn）Fe2O4requires a lower overpotential of only 67m V to deliver 10 m A cm-2for hydrogen evolution reaction（HER） in alkaline electrolyte. Moreover, M-（Ni, Zn）Fe2O4respectively as the anode and cathode electrode for the overall water splitting, the catalysis system requires a cell voltage of only 1.76 V to gain a current density of 50 m A cm-2, combining with an excellent discharging stability after 10 h. This work provides a facile synthesis strategy toward the design of efficient non-noble metal catalysts for alkaline HER and overall water splitting.

关键词： Hydrogen evolution reaction Magnetic field Water splitting Spinel oxide Electron modulation

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Encapsulation of polyethylene glycol in cellulose-based porous capsules for latent heat storage and light-to-thermal conversion

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Frontiers of Chemical science and Engineering 2023年第8期17卷 1038-1050页

作者： Jiangwei Li Lina Meng Jiaxuan Chen Xu Chen Yonggui Wang Zefang Xiao Haigang Wang Daxin Liang Yanjun Xie Key Laboratory of Bio-based Material Science and Technology(Ministry of Education) College of Material Science and EngineeringNortheast Forestry UniversityHarbin 150040China

Phase change materials are potential candidates for the application of latent heat ***,we fabricated porous capsules as shape-stable materials from cellulose-based polyelectrolyte complex,which were first prepared using cellulose 6-(N-pyridinium)hexanoyl ester as the cationic polyelectrolyte and carboxymethyl cellulose as the anionic polyelectrolyte to encapsulate polyethylene glycol by the vacuum impregnation ***,the multi-walled carbon nanotube or graphene oxide,which were separately composited into the polyelectrolytes complex capsules to enhance thermal conductivity and light-to-thermal conversion *** capsules owned a typical core–shell structure,with an extremely high polyethylene glycol loading up to 34.33 g∙g^(‒1).After loading of polyethylene glycol,the resulted cellulose-based composite phase change materials exhibited high thermal energy storage ability with the latent heat up to 142.2 J∙g^(‒1),which was 98.5%of pure polyethylene *** results showed that the composite phase change materials demonstrated good form-stable property and thermal ***,studies involving light-to-thermal conversion determined that composite phase change materials exhibited outstanding light-to-thermal conversion *** their exceptional comprehensive features,innovative composite phase change materials generated from cellulose presented a highly interesting choice for thermal management and renewable thermal energy storage.

关键词： cellulose polyelectrolytes phase change materials thermal energy storage light-to-thermal conversion

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Multi-stimuli bilayer hydrogel actuator for remotely controllable transportation of droplets

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Progress in Natural science:materials International 2023年第3期33卷 364-370页

作者： Shuting Shen Na Pan Chengfei Liu Wenxin Fan Kunyan Sui State Key Laboratory of Bio-Fibers and Eco-Textiles College of Materials Science and Engineering Shandong Collaborative Innovation Center of Marine Biobased Fibers and Ecological Textiles Institute of Marine Bio-based Materials Qingdao University School of Materials Science and Engineering Liaocheng University

Under external stimuli, the bilayer hydrogels can change their shapes or move mechanically with fast, sensitive and adjustable motion characteristics. However, the main methods for preparing bilayer hydrogels have many limitations, such as they involve complicated synthesis processes, lead to fragile bilayer interface and structure,and result in single responsiveness and deformation, which hinders the practical applications of bilayer hydrogel in intelligent bionics. Here, we used the reaction-diffusion of sodium alginate(SA) and chitosan(CS) combined with the photopolymerization of N-isopropylacrylamide(NIPAM) to prepare(PNIPAM/SA)/(SA/CS) bilayer hydrogel film. The bilayer hydrogel film can well respond to the alteration of temperature, p H, salt concentration and thickness ratio with good interlayer bonding. This strategy can be applied to intelligent drive device to promote its practical application.

关键词： Bilayer hydrogels Actuator Multiple responsiveness Transportation of droplets

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One-Pot Protolignin Extraction by Targeted Unlocking Lignin-Carbohydrate Esters via Nucleophilic Addition-Elimination Strategy

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Research 2023年第4期2023卷 181-194页

作者： Yuhan Lou Xinyue Sun Yanyan Yu Suqing Zeng Yilin Li Yongzhuang Liu Haipeng Yu Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education Northeast Forestry UniversityHarbin 150040P.R.China

Protolignin extraction can facilitate structure elucidation and valorization of lignin in biorefinery,but is rather challenging due to the complex chemical bonds ***,we developed the in situ generated NH3-reline(IGNR)system to realize one-pot protolignin extraction from *** the IGNR system,reline consisting of choline chloride and urea acted as both a solvent and a nucleophile generator,and the nucleophilic addition-elimination mechanism was verified by model compound *** in situ generated NH3 could precisely cleave the lignin-carbohydrate esters in lignocellulose with a near-quantitative retention of *** extracted IGNR-Protolignin exhibited native lignin substructure with high molecular weight and highβ-O-4′content(41.5 per 100 aromatic units).In addition,the up-scaled kilogram reaction demonstrated the feasibility of the IGNR system for potential industrial application in a green and sustainable *** work represents a breakthrough toward protolignin extraction in practice with the future goal of achieving total biorefinery.

关键词： lignin system bonds

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Tin-mediated carbon-confined Pt_(3)Co ordered intermetallic nanoparticles as highly efficient and durable oxygen reduction electrocatalysts for rechargeable zinc-air batteries

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Journal of Energy Chemistry 2024年第11期98卷 169-179页

作者： Ruotao Yang Chuhan Dai Laiwei Zhang Ruirui Wang Kui Yin Bo Liu Ziliang Chen Institute of Functional Nano and Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-based Functional Materials and DevicesSoochow UniversitySuzhou 215123JiangsuChina Suzhou Key Laboratory for Nanophotonic and Nanoelectronic Materials and Its Devices School of Materials Science and EngineeringSuzhou University of Science and TechnologySuzhou 215009JiangsuChina

The development of electrocatalysts for the oxygen reduction reaction(ORR) that bears high selectivity,exceptional activity,and long-term stability is crucial for advancing various green energy *** composed of platinum and transition metals are considered to be promising candidates for this ***,they typically face challenges such as unfavorable intrinsic activity and a propensity for particle aggregation,diminishing their ORR *** this backdrop,we present our findings on a N-doped carbon confined Pt_(3)Co intermetallic doped with p-block metal tin(Pt_(3)Co_(x)Sn_(1-x)/NC).The introduction of Sn induces lattice strain due to its larger atomic size,which leads to the distortion of the Pt_(3)Co lattice structure,while the coupling of carbon polyhedra inhibits the particle *** optimized Pt_(3)Co_(0.8)Sn_(0.2)/NC catalyst demonstrates an impressive half-wave potential of 0.86 V versus RHE,surpassing both Pt_(3)Co/NC and Pt_(3)Sn/NC ***,the Pt_(3)Co_(0.8)Sn_(0.2)/NC exhibits a mass-specific activity as high as 1.4 A mg_(Pt)^(-1),ranking it in the top level among the intermetallicsbased ORR *** further employed as a cathode material in a self-assembled zinc-air battery,it shows stable operation for over 80 *** results underscore the significant impact of lattice strain engineering through the strategic doping of p-block metal in the carbon-confined Pt_(3)Co intermetallic,thereby enhancing the catalytic efficiency for the ORR.

关键词： Lattice strain Pt-based intermetallic N-doped carbon Electrocatalysis Oxygen reduction reaction

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Crystalline/Non-Crystalline Carbon Co-Modified Strategy to Construct N,S Co-Doped Carbon Layer Wrapped Fe_(0.95)S_(1.05)/Carbon Nanotubes for Enhanced Lithium Storage Property

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Acta Metallurgica Sinica(English Letters) 2025年第1期38卷 93-101页

作者： Liang Chen Lan−Yun Yang Li−Ting Zeng Xu Liu Xin−Rui Li Yu−Shan Tian Wei Wang Gang−Yong Li Chen−Xi Xu Zhao−Hui Hou Key Laboratory of Hunan Province for Advanced Carbon‒based Functional Materials School of Chemistry and Chemical EngineeringHunan Institute of Science and TechnologyYueyang414006China College of Materials Science and Engineering Central South University of Forestry and TechnologyChangsha410004China

Due to their high theoretical capacity and abundant resources,transition metal sulfides are regarded as a prospering alternative to replace the commercial graphite anode in lithium-ion batteries(LIBs),particularly for large-scale energy storage and conversion ***,low conductivity,easy agglomeration and obvious volume change greatly impede their practical *** this work,a novel crystalline/non-crystalline carbon co-modified strategy is proposed to fabricate N,S co-doped carbon(NSC)layer wrapped Fe_(0.95)S_(1.05)/carbon nanotubes(CNTs)composite(Fe_(0.95)S_(1.05)/CNTs@NSC)through a simple Fenton reaction followed by a sulfurization *** characterizations and analyses reveal that this strategy well combines the advantages of crystalline CNTs and non-crystalline NSC,ensuring good conductivity and a high contribution to capacity from the carbon ***,the joint encapsulation of Fe_(0.95)S_(1.05)by both CNTs and NSC can significantly mitigate the agglomeration and volume change of Fe_(0.95)S_(1.05)during the continuous charge/discharge *** from these advantageous features,the resultant Fe_(0.95)S_(1.05)/CNTs@NSC composite displays much improved cycling stability and rate capability when compared to the ***,our research offers a distinct and innovative approach to design and construct advanced transition metal sulfides/carbon composite anodes for LIBs.

关键词： Lithium-ion batteries Crystalline/non-crystalline carbon Joint encapsulation Fe_(0.95)S_(1.05)/CNTs@NSC Lithium storage property

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