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A low-cost wide bandgap polymer based on carboxylate substituted thiazole enables efficient organic solar cells with remarkable batch-to-batch reproducibility

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science China Chemistry 2025年第2期68卷 733-744页

作者： Xiaodong Zhu Yuchen Lei Jianhong Gao Yanjun He Jinsicheng Liu Qian Guo Xiang Gao Liwei Xiong Xunchang Wang Renqiang Yang Zhitian Liu Hubei Engineering Technology Research Center of Optoelectronic and New Energy Materials Hubei Key Laboratory of Plasma Chemistry and Advanced MaterialsSchool of Materials Science and EngineeringWuhan Institute of TechnologyWuhan 430205China Key Laboratory of Optoelectronic Chemical Materials and Devices(Ministry of Education) School of Optoelectronic Materials&TechnologyJianghan UniversityWuhan 430056China

Constructing the low-cost,high-efficiency,and good batch-to-batch reproducibility polymer donor is vitally important for the application of organic solar ***,we develop a structurally simple carboxylate-substituted thiazole as an electronwithdrawing building block to construct a low-cost polymer,PBTTzE,containing a facilely prepared chlorinated benzo[1,2-b:4,5-b′]dithiophene(BDTCl)donor *** from synergistic electron deficient effects of chlorination and ester group and C=N,as well as the noncovalent interaction of S…O and S…N,PBTTzE exhibits a deep HOMO energy level(−5.59 eV),and a planar skeleton *** combined with the IT-4F acceptor,the polymer(54 kDa)demonstrated a champion PCE of 15.87%,which is the highest value in the IT-4F-based binary devices to ***,PBTTzE exhibits excellent batch-tobatch reproducibility due to its very similar PCEs within a range of 43–76 *** addition,an alloyed state and complementary absorption can be formed between PM6 and ***,in a ternary device with PBTTzE added to the PM6:BTP-eC9 blend,a top PCE of 18.76%is achieved due to the suppressed energy loss,prolonged exciton diffusion distance,and improved charge *** work demonstrates that the carboxylate-substituted thiazole is a highly promising acceptor unit for constructing low-cost and high-performance polymers.

关键词： carboxylate substituted thiazole polymer donor low-cost batch-to-batch reproducibility organic solar cells

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Modeling bacterial adhesion on the nanopatterned surface by varying contact area

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Journal of materials science & Technology 2024年第29期196卷 137-147页

作者： Kun Yang Lei Wang Xianrui Zou Hongshui Wang Chunyong Liang Dawei Zhang Lu-Ning Wang Beijing Advanced Innovation Center for Materials Genome Engineering State Key Laboratory for Advanced Metals and MaterialsSchool of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijing 100083China School of Materials Science and Engineering Hebei University of TechnologyTianjin 300130China School of Health Sciences and Biomedical Engineering Hebei University of TechnologyTianjin 300130China Institute for Advanced Materials and Technology University of Science and Technology BeijingBeijing 100083China Institute of Materials Intelligent Technology Liaoning Academy of MaterialsShenyang 110004China

Bacterial adhesion is a critical process in many fields,such as implant infections,microbiologically influenced corrosion and bioelectricity generation in microbial fuel *** bacterial adhesion,the contact area between the attached bacteria and the patterned surface plays an important *** this study,different surface topographies and treatments were employed to simulate three circumstances with different contact areas.A nanostripe structure with a period of 576.9 nm and a height of 203.5 nm was fabricated on pure titanium by femtosecond laser *** in liquid attached to the peaks of the nanostripe structure and were stretched on the two adjacent *** with the polished surface,the contact area between bacteria and the nanostripe surface was reduced to 50%,resulting in a reduction(about 50%)in the coverage rate of attached *** addition,the nanostripe surface was a hydrophobic surface with a water contact angle(WCA)of 112.1°,and the surface potential of the nanostripe surface was higher than that of the polished ***,the surface potential and wettability of the nanostripe surface played a minor role in the bacterial adhesion due to the reduced contact *** drying,the attached bacteria on the nanostripe surface sank into the valley region and the contact area was about 40%larger than that on the polished *** lateral strength of bacterial adhesion on nanostripe surfaces was higher than that on polished surfaces,due to the larger contact *** applying a lateral force of 10.0 nN,the percentage of bacteria remaining on the nanostripe surface(31.1%)was higher than that on the polished surface(11.9%).Hence,the bacterial adhesion on the nanopatterned surface was mainly determined by the contact *** in-depth exploration of the relation between bacterial adhesion on the nanopatterned surface and the contact area enables the rational surface designs of biomaterials to regulate bacterial adhesion.

关键词： Bacterial adhesion Contact area Nanopatterned surface Atomic force microscope

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Hydrothermal synthesis of polyimide-linked covalent organic frameworks towards ultrafast and stable cathodic sodium storage

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science China Chemistry 2024年第4期67卷 1300-1310页

作者： Xiya Yang Lei Gong Zhixin Liu Qianjun Zhi Baoqiu Yu Xin Chen Kang Wang Xiaofeng Li Dongdong Qi Jianzhuang Jiang Beijing Advanced Innovation Center for Materials Genome Engineering Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline MaterialsDepartment of Chemistry and Chemical EngineeringSchool of Chemistry and Biological EngineeringUniversity of Science and Technology BeijingBeijing 100083China State Key Laboratory of Organic-Inorganic Composites College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029China

Redox-active organic materials are capturing growing attention as cathode materials for sustainable alkaline metal ion ***,the storage of Na+in most organic materials-based cathodes is plagued by low capacity and unsatisfying rate performance due to their low active site densities and limited exposed active ***,two polyimide-linked covalent organic frameworks(COFs),namely HATN-PD-COF and HATN-TAB-COF,were fabricated from hydrothermal synthesis with redoxactive triphenylene-2,3,6,7,10,11-hexacarboxylic acid and aromatic amines as starting *** X-ray diffraction and electron microscopy analysis indicate the high crystalline nature of these COFs with AA stacking configuration and orderly mesoporous tunnel.N_(2) sorption measurement discloses the permanent porosity of these two COFs with a Brunauer-EmmettTeller surface area of 1,065-1,200 m^(2)g^(-1)and a large pore size of 2.0-3.1 *** intermittent titration technique and density functional theory calculations reveal the facile Na+ion diffusion along the mesoporous tunnel of these COFs with a small energy barrier of 0.13-0.40 e *** particular,the as-prepared COFs based-cathodes show ultrafast and stable Na+storage associated with their conjugated electronic structure,highly ordered mesoporous tunnel,robust structure,and redox-active C=N/C=O-rich framework as exemplified by the high reversible capacity of 210 m A h g^(-1)at 200 m A g^(-1),record-high rate performance(195 m A h g^(-1)at a high current density of 10,000 m A g^(-1))among organic electrodes and the capacity retention of nearly 91%at 10,000 m A g^(-1)after 7,000 cycles for HATN-PD-COF.

关键词： covalent organic framework sodium ion battery cathode high rate organic electrode

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Heterogeneous β-Co(OH)_(2)/Cu_(2)(OH)_(3)Cl bifunctional electrocatalyst for superior concurrent conversion of glycerol and nitrite

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Journal of Energy Chemistry 2025年第5期104卷 185-193页

作者： Mingdan Wang Pengzuo Chen Huigang Wang Yanying Zhao School of Chemistry and Chemical Engineering Key Laboratory of Surface&Interface Science of Polymer Materials of Zhejiang ProvinceZhejiang Sci-Tech UniversityHangzhou 310018ZhejiangChina Hangzhou Institute of Advanced Studies Zhejiang Normal UniversityHangzhou 311231ZhejiangChina

The electrochemical biomass valorization of industrial by-products or pollutants using renewable electricity offers significant promise for carbon ***,the huge challenges still exist in the development of efficient bifunctional ***,we put forward a high-efficiency coelectrolysis system by coupling the nitrite reduction reaction(NO_(2)RR)and the glycerol oxidation reaction(GOR)over a novel heterogeneous β-Co(OH)_(2)/Cu_(2)(OH)_(3)Cl ***β-Co(OH)_(2)/Cu_(2)(OH)_(3)Cl shows excellent bifunctional performance with high Faradaic efficiencies of formate(90.1%)and NH_(3)(91.9%)at cell voltage of 1.5 V,high yield rate of formate(89.6 mg h^(-1)cm^(-2))and NH_(3)(36.07 mg h^(-1)cm^(-2))at cell voltage of 1.9 V,and superior stability in an anion exchange membrane *** in-situ Raman result confirms the unique Co/Cu-based bimetallic synergistic sites of β-Co(OH)_(2)/Cu_(2)(OH)_(3)Cl towards superior GOR performance,while the operando Fourier transform infrared spectroscopy demonstrates the improved protonation kinetics of key intermediates and optimized water dissociation ability ofβ-Co(OH)_(2)/Cu_(2)(OH)_(3)Cl for high NO_(2)RR *** work illuminates alternative avenues to exploit the innovative and energy-saving technology for the co-production of high-added chemicals.

关键词： Heterogeneous catalyst β-Co(OH)_(2)/Cu_(2)(OH)_(3)Cl Bifunctional performance Nitrite reduction reaction Glycerol oxidation reaction

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Prediction of M–A Constituents and Impact Toughness in Stir Zone of X80 Pipeline Steel Friction Stir Welds

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Acta Metallurgica Sinica(English Letters) 2023年第4期36卷 573-585页

作者： Xueli Wang Xin Ji Bin He Dongpo Wang Chengning Li Yongchang Liu Wei Guan Lei Cui Tianjin Key Laboratory of Advanced Joining Technology School of Materials Science and EngineeringTianjin UniversityTianjin 300354China

This study explored a strategy for predicting the proportion of martensite–austenite(M–A)constituents and impact toughness of stir zone(SZ)on X80 pipeline steel joints welded by friction stir welding(FSW).It is found that the welding forces,including the traverse force(F_(x)),the lateral force(F_(y))and the plunge force(F_(z)),are the key variables related to the change of welding parameters and influence remarkably the characteristics of M–A constituents and impact toughness of *** impact toughness of SZ is commonly lower than that of the base material due to the formation of lath bainite and coarsening of *** characteristics of M–A constituents in SZ are sensitive to the variation of welding parameters and respond well to the change of welding *** proportion of small island M–A constituents increases with the decrease in rotational speed and the increase in *** increase in the amount of island M–A constituents is beneficial to improve the impact toughness of *** on the above findings,a machine learning(ML)model for predicting the M–A constituents and impact toughness is constructed using the force features as the input data *** force data-driven ML model can predict the M–A constituents and impact toughness precisely and exhibits higher accuracy than ML built with welding *** is believed that the high accuracy is achieved because the force features include more details of FSW process,such as the heat generation,material flow,plastic deformation,and so on,which govern the microstructural evolution of SZ during FSW.

关键词： Friction stir welding Pipeline steel Welding force M-A constituents Impact toughness

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Emerging high-entropy strategy: A booster to the development of cathode materials for power batteries

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Journal of advanced Ceramics 2024年第8期13卷 1093-1118页

作者： Liping Huang Jinging Zhu J-Xuan Liu Houzheng Wu Guo-Jun Zhang State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Institute of Functional MaterialsCollege of Materials Science and EngineeringDonghua UniversityShanghai 201620China SIAMC Advanced Materials Cooperation Huzhou 313100China

The coordinated development of new energy vehicles and the energy storage industry has become essential for reducing carbon *** cathode material is the key material that determines the energy density and cost of a power battery,but currently developed and applied cathode materials cannot meet the requirements for high specific capacity,low cost,safety,and good ***-entropy materials(HEMs)are a new type of single-phase material composed of multiple principal elements in equimolar or near-equimolar *** interaction between multiple elements can play an important role in improving the comprehensive properties of the material,which is expected to solve the limitations of battery materials in practical ***,this review provides a comprehensive overview of the current development status and modification strategies of power batteries(lithium-ion batteries(LiBs)and sodium-ion batteries(SIBs)),proposes a high-entropy design strategy,and analyses the structure-activity relationship between the high-entropy effects and battery ***,future research topics related to high-entropy cathode materials,including computational guide design,specific synthesis methods,high-entropy electrochemistry,and high-throughput databases,are *** review aims to provide practical guidance for the development of high-entropy cathode materials for next-generation power batteries.

关键词： cathode materials lithium-ion battery(LIB) sodium-ion battery(SIB) high-entropy strategy

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A hollow core-shell TiO2/NiCo2S4 Z-Scheme heterojunction photocatalyst for efficient hydrogen evolution

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材料科学技术（英文版） 2025年第9期212卷 182-191页

作者： Mao-Jin Ran Meng Wang Zhi-Yi Hu Yi-Fu Huang Lin-Dong Wang Lu Wu Man-Man Yuan Jian Zhang Bei Li Gustaaf Van Tendeloo Yu Li Bao-Lian Su State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and EngineeringWuhan University of TechnologyWuhan 430070China Nanostructure Research Centre(NRC) Wuhan University of TechnologyWuhan 430070China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and EngineeringWuhan University of TechnologyWuhan 430070China Nanostructure Research Centre(NRC) Wuhan University of TechnologyWuhan 430070China Electron Microscopy for Materials Science(EMAT) University of AntwerpGroenenborgerlaan 171Antwerp B-2020Belgium State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and EngineeringWuhan University of TechnologyWuhan 430070China Laboratory of Inorganic Materials Chemistry(CMI) University of Namur61 rue de BruxellesNamur B-5000 Belgium

Constructing heterojunctions have received significant attention in photocatalysis because of their effi-cient separation of photogenerated carriers and improving light utilization *** sulfides(***2S4)are applied in electrocatalysis and supercapacitors that can be coupled with TiO2 to form a *** to the staggered energy band arrangement between TiO2 and NiCo2S4,the es-tablishing of a Z-scheme heterojunction between them is expected to enhance the carrier separation effi-ciency and reduce the sulfide ***,the application of NiCo2S4 in photocatalysis and studies on the mechanism of the TiO2/NiCo2S4 Z-scheme heterojunction have seldom been *** this work,we obtained a hollow core-shell TiO2/NiCo2S4 Z-scheme photocatalyst through a solvothermal method for photocatalytic hydrogen evolution(PHE).The PHE rate of the optimized TiO2/NiCo2S4-0.3 is 8.55 mmol g-1 h-1,approximately 34 times higher than pure TiO2,94 times higher than pure *** remarkable photocatalytic activity can be ascribed to the hollow structure and the in-situ constructed Z-scheme *** photogenerated charge transfer mechanism is revealed by hydroxyl radical trapping experiments and electron paramagnetic resonance(EPR)*** in-situ construc-tion of the Z-scheme heterojunction not only enhances the efficiency of separating the photogenerated carriers but also reduces the photo-corrosion of *** study proposes an effective strategy for the design of TiO2-based Z-scheme heterojunctions and the application of NiCo2S4 in photocatalysis.

关键词： TiO2 NiCo2S4 Hollow core-shell Z-Scheme Heterojunction Photocatalytic H2 evolution

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In Situ Directional Polymerization of Poly(1,3-dioxolane)Solid Electrolyte Induced by Cellulose Paper-Based Composite Separator for Lithium Metal Batteries

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Energy & Environmental materials 2023年第3期6卷 134-143页

作者： Jian Ma Yueyue Wu Hao Jiang Xin Yao Fan Zhang Xianglong Hou Xuyong Feng Hongfa Xiang School of Materials Science and Engineering Anhui Provincial Key Laboratory of Advanced Functional Materials and DevicesHefei University of TechnologyHefei 230009China

In traditional in situ polymerization preparation for solid-state electrolytes,initiators are directly added to the liquid *** this article,a novel cellulose paper-based composite separator is fabricated,which employs alumina as the inorganic reinforcing material and is loaded with polymerization initiator aluminum *** upon this,a separator-induced in situ directional polymerization technique is demonstrated,and the extra addition of initiators into liquid precursors is no longer *** polymerization starts from the surface and interior of the separator and extends outward with the gradually dissolving of initiators into the *** with its traditional counterpart,the separator-induced poly(1,3-dioxolane)electrolyte shows improved interfacial contact as well as appropriately mitigated polymerization rate,which are conducive to practical *** measurement results show that the prepared poly(1,3-dioxolane)solid electrolyte possesses an oxidation potential up to 4.4 V and a high Li+transference number of *** 1000 cycles at 2 C rate(340 mA g^(−1)),the assembled Li||LiFePO_(4)solid battery possesses a 106.8 mAh g^(−1)discharge capacity retention and 83.5%capacity retention ratio,with high average Coulombic efficiency of 99.5%*** work may provide new ideas for the design and application of in situ polymerization technique for solid electrolytes and solid batteries.

关键词： cellulose paper-based composite separator in situ directional polymerization lithium metal battery poly-DOL electrolyte solid-state electrolyte

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New strategy for Mg-air battery voltage-efficiency synergy by engineering protective film with cation vacancies on Mg anode surface

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材料科学技术（英文版） 2025年第10期213卷 24-41页

作者： Yuying He Qianyu Wang Jinghuai Zhang Lele Wang Shujuan Liu Zehua Li Zhen Wei Hao Dong Xiaobo Zhang Key Laboratory of Superlight Material and Surface Technology Ministry of EducationCollege of Material Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology Nanjing Institute of TechnologyNanjing 211167China

Although the Mg-air battery with high theoretical energy density is desirable for the energy supply of marine engineering equipment,its applications remain limited due to the low actual discharge volt-age and inferior Mg anode utilization *** addition to the microstructure of Mg alloy anodes,the properties of discharge product films are of great importance to the discharge ***,the discharge behaviors of Mg-Y-Zn alloys are first studied mainly from the perspective of film *** contrastive analysis,it is found that the sufficient Y3+produced during the discharge process can substitute Mg2+in Mg(OH)2 to introduce effective cation *** Mg-Y-Zn anode with pro-fuse cation vacancies in the product film shows a synergy of potential and efficiency,and this can be attributed to an increase in the migration pathway for Mg2+,reducing the diffusion over-potential caused by the protective product *** study is expected to provide a new strategy from the perspective of cation vacancy design of discharge film for developing high-performance Mg-air batteries.

关键词： Mg alloy Mg-air battery Product film Cation vacancy Discharge performance

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Enhancing Low-Frequency Microwave Absorption Through Structural Polarization Modulation of MXenes

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Nano-Micro Letters 2024年第10期16卷 435-452页

作者： Bo Shan Yang Wang Xinyi Ji Yi Huang College of Light Industry Science and Engineering State Key Laboratory of Biobased Fiber Manufacturing TechnologyTianjin University of Science and TechnologyTianjin 300457People's Republic of China National Institute for Advanced Materials Tianjin Key Laboratory of Metal and Molecule Based Material ChemistryKey Laboratory of Functional Polymer MaterialsCollaborative Innovation Center of Chemical Science and Engineering(Tianjin)School of Materials Science and EngineeringNankai UniversityTianjin 300350People's Republic of China

Two-dimensional carbon-based materials have shown promising electromagnetic wave absorption capabilities in mid-and high-frequency ranges,but face challenges in low-frequency absorption due to limited control over polarization response mecha-nisms and ambiguous resonance *** this study,we pro-pose a novel approach to enhance absorption efficiency in aligned three-dimensional(3D)MXene/CNF(cellulose nanofibers)cavities by modifying polarization properties and manipulating resonance response in the 3D MXene *** controlled polarization mechanism results in a significant shift of the main absorption region from the X-band to the S-band,leading to a remarkable reflection loss value of-47.9 dB in the low-frequency ***,our findings revealed the importance of the oriented electromagnetic coupling in influencing electromagnetic response and microwave absorption *** present study inspired us to develop a generic strategy for low-frequency tuned absorption in the absence of magnetic element participation,while orientation-induced polarization and the derived magnetic resonance coupling are the key controlling factors of the method.

关键词： Hierarchical structure MXene Microwave absorption Low-frequency

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