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Recent advances in flexible self-oscillating actuators

escience 2024年第5期4卷 91-109页

作者： Jingjing Li Wenjin Guo Weiqiang Zhao Yutian Zhu Jie Bai Zhigang Xia Xiang Zhou Zunfeng Liu School of Textile Science and Engineering State Key Laboratory of New Textile Materials and Advanced Processing TechnologiesWuhan Textile UniversityWuhan 430200China State Key Laboratory of Medicinal Chemical Biology Key Laboratory of Functional Polymer MaterialsTianjin Key Laboratory of Functional Polymer MaterialsSmart Sensing Interdisciplinary Science CenterCollege of ChemistryNankai UniversityTianjin 300350China College of Material Chemistry and Chemical EngineeringKey Laboratory of Organosilicon Chemistry and Material TechnologyMinistry of EducationKey Laboratory of Organosilicon Material TechnologyHangzhou Normal UniversityHangzhou 311121China College of Chemistry and Chemical Engineering Inner Mongolia Univ TechnolChem Engn CollHohhot 010051China Department of Science China Pharmaceutical UniversityNanjing 211198China

Soft actuators are constituted by a type of intelligent materials,and they can generate reversible mechanical motions under external *** usually achieve continuous actuation by manual turning on or off the power supply,which significantly increases the operation *** contrast,self-oscillating actuators can achieve autonomous motions under constant stimuli,and have recently attained great advancements,as well as promoted the development of autonomous soft *** this review,the latest achievements of soft oscillators are ***,the self-oscillating mechanisms mainly including oscillating chemical reactions and self-shadowing-induced mechanical negative feedback loops are *** oscillators constructed with various materials and configurations,driven by different stimuli and applied in different fields are then presented in ***,the difficulties and hopes of oscillators are ***,self-oscillating actuators are in the stage of vigorous development,and we believe that in the future,they will be used in various fields and make many scenarios more intelligent and autonomous.

关键词： Oscillating actuator Artificial muscles Polymer composite Biomimetic Smart materials

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Versatility of π-d Conjugated Coordination Nickel Metal-Organic Frameworks as Electrode materials of Metal-Ion Batteries

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Energy Material Advances 2024年第1期5卷 120-132页

作者： Zaohong Zhang Kaihui Xu Jing Yang Zhuoyu Ji Yunchen Ge Zhicong Shi Yongwei Zhang Kai Zhang Chuan Wu Jia Hong Pan State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures School of ResourcesEnvironments and MaterialsGuangxi UniversityNanning 530004China Low Carbon Energy Process Intensification Research Institute and MOE Key Laboratory of Resources and Environmental Systems Optimization North China Electric Power UniversityBeijing 102206China Institute of High Performance Computing Agency for ScienceTechnology and Research(A*STAR)Singapore 138632Singapore Guangxi Key Laboratory of Manufacturing Systems and Advanced Manufacturing Technology Guilin University of Electronic TechnologyGuilin 541004China School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Beijing Key Laboratory of Environmental Science and Engineering School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Yangtze Delta Region Academy of Beijing Institute of Technology Jiaxing 314019China

Metal-organic frameworks have emerged as promising electrode materials for metal-ion batteries due to their superior structural ***,they face challenges such as poor reversibility and easy degradation during electrochemical redox ***,we report the synthesis ofπ-d conjugated coordination polymers through NH_(3)-vapor-assisted self-polymerization of NiCl_(2)·6H_(2)O with 1,2,4,5-benzenetetramine tetrahydrochloride(namely,Ni-BTA).The synthesized Ni-BTA exhibits an open lattice structure that enhances the capacity for metal-ion diffusion,ensuring prolonged electrochemical cycling ***,electrochemical characterizations reveal that Ni-BTA functions as a bifunctional material,serving as both cathode and anode materials for lithium-ion batteries(LIBs).After 1,000 cycles at 1.0 A g^(−1),the cathode and anode show high discharge capacities of 199.7 and 338.4 mAh g^(−1),***,symmetrical all-organic batteries constructed with Ni-BTA exhibit a high specific capacity of 30.6 mAh g-1 and an ultrastable coulombic efficiency of approximately≈100%after 6,000 cycles at 1.0 A g^(−1).Furthermore,Ni-BTA exhibits versatility as a robust cathode for aluminum ion batteries(AIBs),delivering a discharge capacity of 18.7 mAh g^(−1) after 10,000 cycles at 1.0 A g^(−1).These findings highlight the potential of Ni-BTA as a versatile and durable electrode materials for both LIBs and AIBs.

关键词： d conjugation electrochemical stability open lattice stru metal ion batteries electrochemical redox processesherewe lithium ion batteries coordination polymers electrode materials

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Atomically dispersed Fe sites on hierarchically porous carbon nanoplates for oxygen reduction reaction

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Journal of Energy Chemistry 2024年第3期90卷 7-15,I0002页

作者： Ruixue Zheng Qinglei Meng Hao Zhang Teng Li Di Yang Li Zhang Xiaolong Jia Changpeng Liu Jianbing Zhu Xiaozheng Duan Meiling Xiao Wei Xing State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022JilinChina School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei 230026AnhuiChina Laboratory of Advanced Power Sources Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022JilinChina Institute of Functional Nano&Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesJiangsu Key Laboratory of Advanced Negative Carbon TechnologiesSoochow UniversitySuzhou 215123JiangsuChina State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022JilinChina

Developing cost-effective,robust and stable non-precious metal catalysts for oxygen reduction reaction(ORR) is of paramount importance for electrochemical energy conversion devices such as fuel cells and metal-air *** Fe-N-C single atom catalysts(SACs) have been hailed as the most promising candidate due to the optimal binding strength of ORR intermediates on the Fe-N_(4) sites,they suffer from serious mass transport limitations as microporous templates/substrates,i.e.,zeolitic imidazolate frameworks(ZIFs),are usually employed to host the active *** by this challenge,we herein develop a hydrogen-bonded organic framework(HOF)-assisted pyrolysis strategy to construct hierarchical micro/mesoporous carbon nanoplates for the deposition of atomically dispersed Fe-N_(4) *** a design is accomplished by employing HOF nanoplates assembled from 2-aminoterephthalic acid(NH_(2)-BDC) and p-phenylenediamine(PDA) as both soft templates and C,N *** from the structural merits inherited from HOF templates,the optimized catalyst(denoted as Fe-N-C SAC-950) displays outstanding ORR activity with a high half-wave potential of 0.895 V(*** hydrogen electrode(RHE)) and a small overpotential of 356 mV at 10 mA cm^(-2) for the oxygen evolution reaction(OER).More excitingly,its application potential is further verified by delivering superb rechargeability and cycling stability with a nearly unfading charge-discharge gap of 0.72 V after 160 *** dynamics(MD) simulations reveal that micro/mesoporous structure is conducive to the rapid mass transfer of O_(2),thus enhancing the ORR *** situ Raman results further indicate that the conversion of O_(2) to~*O_(2)-the rate-determining step(RDS) for Fe-N-C *** work will provide a versatile strategy to construct single atom catalysts with desirable catalytic properties.

关键词： Fe single atom catalysts Oxygen reduction reaction Mesoporous structure Active sites Zinc-air battery

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Host-Guest Strategy Enabling Nonhalogenated Solvent Processing for High-Performance All-Polymer Hosted Solar Cells

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Chinese Journal of Chemistry 2023年第9期41卷 1066-1074页

作者： Yuting Huang Haiyang Chen Qunping Fan Ziyuan Chen Junyuan Ding Heyi Yang Zhe Sun Rui Zhang Weijie Chen Changduk Yang Feng Gao Yaowen Li Laboratory of Advanced Optoelectronic Materials Suzhou Key Laboratory of Novel Semiconductor-optoelectronics Materials and DevicesCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhouJiangsu 215123China Jiangsu Key Laboratory of Advanced Negative Carbon Technologies Soochow UniversitySuzhouJiangsu 215123China State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials Jiangsu Key Laboratory of Advanced Functional Polymer Design and ApplicationCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhouJiangsu 215123China State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong UniversityXi'anShaanxi 710049China Department of Energy Engineering School of Energy and Chemical EngineeringPerovtronics Research CenterLow Dimensional Carbon Materials CenterUlsan National Institute of Science and Technology(UNIST)UlsanRepublic of Korea Department of Physics Chemistry and Biology(IFM)Linkoping UniversityLinkopingSweden

The power conversion efficiencies(PCEs)of all-polymer solar cells(all-PSCs),usually processed from low-boiling-point and toxic sol-vents,have reached high values of 18%.However,poor miscibility and uncontrollable crystallinity in polymer blends lead to a nota-ble drop in the PCEs when using green solvents,limiting the practical development of ***,a third component(guest)BTO was employed to optimize the miscibility and enhance the crystallinity of PM6/PY2Se-F host film processed from green solvent toluene(TL),which can effectively suppress the excessive aggregation of PY2Se-F and facilitate a nano-scale interpenetrating net-work morphology for exciton dissociation and charge *** a result,TL-processed all-polymer hosted solar cells(all-PHSCs)exhibited an impressive PCE of 17.01%.Moreover,the strong molecular interaction between the host and guest molecules also en-hances the thermal stability of the *** host-guest strategy provides a unique approach to developing high-efficiency and stable all-PHSCs processed from green solvents,paving the way for the industrial development of all-PHSCs.

关键词： All-polymer solar cells Host-guest systems Crystal engineering Nonhalogenated green solvent Stability Morphology Miscibility Ternary blend solar cells

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Revealing the Flexibility of Inorganic Sub-Nanowires by Single-Molecule Force Spectroscopy

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CCS Chemistry 2023年第12期5卷 2956-2965页

作者： Yuang Shi Wenxiong Shi Simin Zhang Xun Wang Engineering Research Center of Advanced Rare Earth Materials Department of ChemistryTsinghua UniversityBeijing 100084 Institute for New Energy Materials and Low Carbon Technologies School of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384 MOE Key Laboratory of Cluster Science Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green ApplicationsSchool of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 100081

Sub-nanowires(SNWs),∼1 nm in thickness,possess an inorganic skeleton but display characteristics akin to those of carbon–carbon backbone polymers,such as flexibility,adhesion,gelation,self-assembling behaviors,and shear-thinning *** this,the underlying mechanism for these polymer-like properties remains *** study investigates the origin of SNWs’unique behavior from three distinct *** single-molecule force spectroscopy,we quantitatively measure the persistence lengths of SNWs,which provide a measure of *** addition,we evaluate the macroscopic mechanical properties of SNW materials,including the strength of electrospun fibers and gelation in ***,we apply molecular dynamics to simulate the behaviors of SNWs under elongating and rotating *** three perspectives mentioned above in the study collectively provide evidence for the structure-activity relationship of nanomaterials:a freely rotated backbone results in a flexible SNW,which is inclined to bend and entangle to form gels in ***,a stiff backbone leads to a rigid SNW,which induces strong fibers.

关键词： sub-nanowires flexibility single-molecule force spectroscopy mechanical properties molecular dynamics

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Enhanced exciton dissociation through scandium-decorated conjugated polymers for artificial photosynthesis of hydrogen peroxide

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Journal of Energy Chemistry 2025年第4期103卷 714-722页

作者： Xingxing Chen Yongli Shen Fan Yang Shuang Yao Wen Zhang Baojuan Xi Xuguang An Shenglin Xiong Jinhua Ye Changhua An Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion School of Chemistry and Chemical EngineeringTianjin Key Laboratory of Advanced Functional Porous MaterialsInstitute of New Energy Materials&Low-Carbon TechnologiesTianjin University of TechnologyTianjin 300384China School of Chemistry and Chemical Engineering Shandong UniversityJinan 250100ShandongChina School of Mechanical Engineering Chengdu UniversityChengdu 610106SichuanChina International Center for Materials Nanoarchitectonics(WPI-MANA) National Institute for Materials Science(NIMS)1-1 NamikiTsukubaIbaraki 305-0044Japan

Solar-driven hydrogen peroxide(H_(2)O_(2))production offers a sustainable and environmentally friendly alternative to the traditional anthraquinone oxidation *** polymers(CPs)are emerging as promising photocatalysts for H_(2)O_(2)production due to their unique electronic,optical properties,and tunable ***,the high exciton binding energy of CPs hinders efficient exciton dissociation and charge separation,limiting their photocatalytic *** this work,we synthesized scandium(Sc)atoms decorated CPs with enhanced ordered stacking and crystallinity by introducing benzaldehyde as an end-capping *** strong interaction between charged Sc atoms and electrons facilitates exciton dissociation and improves charge transfer ***,the Lewis acidic nature of Sc atoms promotes oxygen adsorption and enhances the stabilization of superoxide anion intermediate(·O_(2)^(-)).As a result,the as-synthesized photocatalysts exhibit a high H_(2)O_(2)production rate of 18μmol h^(-1)in pure water,which is three times that of pristine CPs,This work provides valuable insights into the design of organic polymer photocatalysts for various photocatalytic reactions.

关键词： Photocatalysis H_(2)O_(2) Exciton dissociation Conjugated polymers

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Interlayer ferromagnetic coupling in nonmagnetic elements doped Crl_(3) thin films

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Frontiers of physics 2024年第6期19卷 61-68页

作者： Xuqi Li Xuyan Chen Shiyang Sun Huihui Zhang Haidan Sang Xiaonan Wang Shifei Qi Zhenhua Qiao College of Physics and Hebei Advanced Thin Film Laboratory Hebei Normal UniversityShijiazhuang 050024China School of Gifted Young University of Science and Technology of ChinaHefei 230026China School of Chemistry and Materials Science Hebei Normal UniversityShijiazhuang 050024China International Center for Quantum Design of Functional Materials CAS Key Laboratory of Strongly-Coupled Quantum Matter Physicsand Department of PhysicsUniversity of Science and Technology of ChinaHefei 230026China

The exploration of magnetism in two-dimensional layered materials has attracted extensive research *** the monoclinic phase Crl_(3) with interlayer antiferromagnetism,finding a static and robust way of realizing the intrinsic interlayer ferromagnetic coupling is *** this work,we study the electronic structure and magnetic properties of the nonmag-netic element(e.g.,O,S,Se,N,P,As,and C)doped bi-and triple-layer Crl_(3) systems via first-principles *** results demonstrate that O,P,S,As,and Se doped Crls bilayer can realize interlayer *** analysis shows that the interlayer ferromagnetic coupling in the doped few-layer Crls is closely related to the formation of localized spin-polarized state around the doped *** study presents that,for As-doped tri-layer Crl_(3),it can realize interlayer ferromagnetic *** work proves that nonmagnetic element doping can realize the interlayer ferromagnetically-coupled few-layer Crl_(3) while maintaining its semiconducting characteristics without introducing additional carriers.

关键词： ferromagnetism magnetic doping

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Application of high-throughput first-principles calculations in ceramic innovation

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Journal of materials science & technology 2021年第29期88卷 143-157页

作者： Bin Liu Juanli Zhao Yuchen Liu Jianqi Xi Qian Li Huimin Xiang Yanchun Zhou School of Materials Science and Engineering Shanghai UniversityShanghai200444China Department of Materials Science and Engineering University of WisconsinMadisonWI53706USA Science and Technology on Advanced Functional Composite Laboratory Aerospace Research Institute of Material&Processing TechnologyBeijing100076China

Recent technical progress in the industry has led to an urgent requirement on new materials with enhanced *** meet this multi-property requirement,the materials consisting of three and more elements have attracted increasing ***,facing to the nearly unknown huge multi-component materials system,the traditional trial and error method cannot provide sufficient data ***,an efficient material innovation strategy is *** first-principles calculation based on the density functional theory is a powerful tool for both the accurate prediction of material properties and the identification of its underlying thermodynamics and *** the same time,the advances of computational methods and computer calculation abilities that are orders of magnitude faster than before make the high throughput first-principles calculations *** present,the simulation-assisted material design has become a main branch in the material research field and a great many successes have been *** this article,the advances of the high throughput first-principles calculations are reviewed to show the achievements of the first-principles calculations and guide the future directions of its applications in ceramics.

关键词： First-principles calculations Ceramics Defect Dynamics Structure-property relationship

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Hybrid anionic block copolymerization:From organocatalysis-streamlined crossover to internally microphase-separated aggregates

Aggregate

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Aggregate 2024年第4期5卷 226-235页

作者： Lijun Liu Heng Li Pengfei Zhang Yubo Zhou Junpeng Zhao Guangzhao Zhang Faculty of Materials Science and Engineering South China University of TechnologyGuangzhouPeople’s Republic of China College of Chemistry and Key Laboratory of Advanced Organic Functional Materials of Colleges and Universities of Hunan Province Xiangtan UniversityXiangtanPeople’s Republic of China Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates South China University of TechnologyGuangzhouPeople’s Republic of China

Polyolefin-b-poly(ethylene oxide)(PEO)represents the most widely investigated amphiphilic block *** far,one-pot continuous synthesis of such hybrid block copolymers has only been fulfilled by anionic polymerization through sequen-tial addition of vinyl monomers and ethylene oxide(EO).It still remains challenging to achieve altogether high block efficiency,high polymerization efficiency,and high molar mass for ***,we report a one-pot hybrid block copolymerization approach to polyisoprene/polystyrene(PI/PS)-b-PEO,in which PI/PS are formed by sBuLi-initiated anionic vinyl-addition polymerization,then in situ employed as macroinitiators for the anionic ring-opening polymerization(ROP)of EO aided by an organic Lewis *** cooperative(dual-ion-complexing)catalytic effect of organobase and triethylborane is proven,for thefirst time,effective for lithium alkoxide initiator system,allowing to achieve at room temperature high ROP activity(complete EO conversion and PEO of 3–64 kg/mol reached in 1–6 h),narrow molar mass distribution,controlled block lengths and *** functional the-ory calculation shows that phosphazene bases are particularly effective,compared with N-heterocyclic bases,for complexing with Li+and enhancing the nucleophilicity of *** rate of ROP is also affected by Li^(+)-induced aggregation of the chain-end ion pairs,which though can be offset by adequate catalyst *** versatility of this approach is further demonstrated in the one-pot synthesis of tri-/tetrablock ter-/quaterpolymers constituted by PI,PS,PEO,and poly(propylene oxide).Of great interest,PS-b-PI-b-PEO triblock terpolymer with a specific com-position is found to form internally microphase-separated micellar aggregates when dispersed in water.

关键词： aggregation anionic polymerization block copolymer organocatalysis ring-opening polymerization

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Mechanisms and Mitigation Strategies of Gas Generation in Sodium-Ion Batteries

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Nano-Micro Letters 2025年第8期17卷 17-48页

作者： Xingyan Li Xi Chen Meng Li Haoran Wei Xuming Yang Shenghua Ye Liewu Li Jing Chen Xiangzhong Ren Xiaoping Ouyang Jianhong Liu Xiangtong Meng Jieshan Qiu Biwei Xiao Qianling Zhang Jiangtao Hu Graphene Composite Research Center College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen 518060People’s Republic of China GRINM(Guangdong)Research Institute for Advanced Materials and Technology Foshan 528051GuangdongPeople’s Republic of China School of Materials Science and Engineering Xiangtan UniversityXiangtan 411105People’s Republic of China College of Chemical Engineering State Key Laboratory of Organic-Inorganic CompositesState Key Laboratory of Chemical Resource EngineeringBeijing University of Chemical TechnologyBeijing 100029People’s Republic of China

The transition to renewable energy sources has elevated the importance of SIBs(SIBs)as cost-effective alternatives to lithium-ion batteries(LIBs)for large-scale energy *** review examines the mechanisms of gas generation in SIBs,identifying sources from cathode materials,anode materials,and electrolytes,which pose safety risks like swelling,leakage,and *** such as CO_(2),H_(2),and O_(2) primarily arise from the instability of cathode materials,side reactions between electrode and electrolyte,and electrolyte decomposition under high temperatures or *** mitigation strategies,encompassing electrolyte design,buffer layer construction,and electrode material optimization,are deliberated ***,subsequent research endeavors should prioritize long-term high-precision gas detection to bolster the safety and performance of SIBs,thereby fortifying their commercial viability and furnishing dependable solutions for large-scale energy storage and electric vehicles.

关键词： Sodium-ion batteries Gas evolution mechanism Inhibition strategies of gas generation High-performance sodium-ion battery roadmap

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