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Constructing high-capacity and flexible aqueous zinc-ion batteries with air-recharging capability using organic cathodes

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Chinese Chemical Letters 2024年第3期35卷 468-472页

作者： Xiaojuan Chen Haoqi Su Baozhu Yang Xiaocen Liu Xiuting Song Lixin Su Gui Yin Qi Liu Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology Advanced Catalysis Green Manufacturing Collaborative Innovation Center and School of Petrochemical EngineeringChangzhou UniversityChangzhou 213164China State Key Laboratory of Coordination Chemistry Nanjing UniversityNanjing 210093China

Flexible aqueous zinc-ion batteries(AZIBs)with air-recharging capability are a promising self-powered system applied in future wearable *** is desired to develop high-capacity air-rechargeable ***,we developed a flexible AZIB with air-recharging capability based on trinitrohexaazatrinaphthylene(TNHATN)cathode and a ZnSO_(4)*** flexible Zn//TNHATN battery exhibits high volumetric energy density(21.36 mWh/cm^3)and excellent mechanical ***,the discharged flexible Zn//TNHATN battery can be chemical self-charged via the redox reaction between TNHATN cathode and O_(2)from the *** oxidation in air for 15 h,such flexible Zn//TNHATN battery can deliver a high specific capacity of 320 mAh/g at 0.5 A/g,displaying excellent air-recharging ***,this flexible Zn//TNHATN battery also works well in chemical or/and galvanostatic charging mixed modes,showing *** work provides a new insight for designing flexible aqueous self-powered systems.

关键词： Aqueous zinc-ion battery Trinitrohexaazatrinaphthylene Organic cathode materials Flexible air-rechargeable battery Self-powered system

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Study on sulfur resistance of MnO_(2)/Beta zeolite in toluene catalytic combustion: The effect of increased acidity on catalytic performance

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Chinese Journal of Chemical engineering 2025年第2期78卷 187-195页

作者： Zhuo Wang Zetao Jin Hanqi Ning Baishun Jiang Kaiyuan Xie Shufeng Zuo Qiuyan Wang Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process College of Chemistry and Chemical EngineeringShaoxing UniversityShaoxing 312000China College of Materials Science and Engineering Beijing University of TechnologyBeijing 100124China State Key Laboratory of Elemento-Organic Chemistry Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education)College of ChemistryNankai UniversityTianjin 300071China

Sulfur dioxide(SO_(2))frequently coexist with volatile organic compounds(VOCs)in exhaust *** competitive adsorption of SO_(2) and VOCs can adversely affect the efficiency of catalytic combustion,leading to catalyst poisoning and irreversible loss of *** investigate the impact of sulfur poisoning on the catalysts,we prepared the MnO_(2)/Beta zeolite,and a corresponding series of sulfur-poisoned catalysts through in-situ thermal decomposition of(NH_(4))_(2)SO_(4).The decrease in toluene catalytic activity of poisoned MnO_(2)/Beta zeolite primarily results from the conversion of the active species MnO_(2) to MnSO_(4).However,the crystal structure and the porous structure of MnO_(2)/Beta zeolite were stable,and original structure was still maintained when 1.6%(mass)sulfur species were ***,the extra-framework Al of Beta zeolite could capture sulfur species to generate Al2(SO_(4))_(3),thereby reducing sulfur species from reacting with Mn^(4+) active *** combination of sulfur and Beta zeolite was found to directly produce new strong-acid sites,thus effectively compensating for the effect of reduced Mn4+active species on the catalytic activity.

关键词： Sulfur-resistant mechanism VOCs catalytic oxidation Beta zeolite In-situ thermal decomposition (NH_(4))_(2)SO_(4)

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Energy Procurement and Retail Pricing for Electricity Retailers via Deep Reinforcement Learning with Long Short-term Memory

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CSEE Journal of Power and Energy Systems 2022年第5期8卷 1338-1351页

作者： Hongsheng Xu Jinyu Wen Qinran Hu Jiao Shu Jixiang Lu Zhihong Yang State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical Electronic Engineering Huazhong University of Science and TechnologyWuhan 430074China NARI Group Corporation Nanjing 211106China School of Electrical Engineering Southeast UniversityNanjing 210096China State Key Laboratory of Smart Grid Protection and Control Nanjing 211106China

The joint optimization problem of energy procurement and retail pricing for an electricity retailer is converted into separately determining the optimal procurement strategy and optimal pricing strategy,under the“price-taker”*** aggregate energy consumption of end use customers(EUCs)is predicted to solve for the optimal procurement strategy vis a long short-term memory(LSTM)-based supervised learning *** optimal retail pricing problem is formulated as a Markov decision process(MDP),which can be solved by using deep reinforcement learning(DRL)***,the performance of existing DRL approaches may deteriorate due to their insufficient ability to extract discriminative features from the time-series vectors in the environmental *** propose a novel deep deterministic policy gradient(DDPG)network structure with a shared LSTM-based representation network that fully exploits the Actor’s and Critic’s *** designed shared representation network and the joint loss function can enhance the environment perception capability of the proposed approach and further improve the optimization performance,resulting in a more profitable pricing *** simulations demonstrate the effectiveness of the proposed approach.

关键词： Deep reinforcement learning electricity market energy procurement long short-term memory retail pricing

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Effect of ion solvation energy on electrohydrodynamic behavior of ionic liquid droplets in electrospray thrusters

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Chinese Journal of Aeronautics 2025年第3期38卷 222-233页

作者： Yipeng FAN Chong CHEN Huifeng KANG Guangqing XIA Chang LU Yajie HAN State Key Laboratory of Structural Analysis Optimization and CAE Software for Industrial EquipmentDalian University of TechnologyDalian 116024China Key Laboratory of Advanced Technology for Aerospace Vehicles of Liaoning Province Dalian University of TechnologyDalian 116024China Collaborative Innovation Center of Micro&Nano Satellites of Hebei Province North China Institute of Aerospace EngineeringLangfang 065000China

The electrospray thruster supplied by ionic liquid is a promising micro-propulsion thruster with small size and precise thrust, which can emit both cations and anions to achieve self-neutralization. In order to further investigate the effect of ion solvation energy on the evaporation of cations and anions from ionic liquid under the action of a uniform electric field, this paper establishes a transient Electrohydrodynamic (EHD) model for free ionic liquid droplets undergoing ion evaporation. The dynamic processes of droplet deformation and ion evaporation are simulated. And the study further focuses on the influence of different ion solvation energies for cations on the droplet morphology and the ion evaporation characteristics at the positively charged end and negatively charged end of the droplet. The results indicate that, when the ion solvation energy for cations is higher than that of anions, it will cause the ion evaporation at the positively charged end of the droplet to lag behind the ion evaporation at the negatively charged end. And the higher the ion solvation energy for the cations, the longer the evaporation lag time at the positively charged end of the droplet, which will lead to a higher peak of surface charge density that can be reached, resulting in a larger evaporation current and sharper droplet stretching deformation. Additionally, the peak surface charge density of the positively charged end of the droplet is linearly related to the ion solvation energy for cations, while the peak surface charge density of the negatively charged end remains almost unchanged and is not significantly affected by the ion solvation energy for cations.

关键词： Ionic liquid Electrospray Electrohydrodynamics Ion solvation energy Ion evaporation

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Rapid Self-healing and Strong Adhesive Elastomer via Supramolecular Aggregates from Core-shell Micelles of Silicon Hydroxyl-functionalized cis-Polybutadiene

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Chinese Journal of Polymer Science 2023年第1期41卷 84-94页

作者： Ying-Ying Zheng Han Zhu Yi Tan Feng-Yi-Qi Liu Yi-Xian Wu State Key Laboratory of Chemical Resource Engineering Beijing Advanced innovation Center for Soft Matter Science and EngineeringBeijing University of Chemical TechnologyBeijing100029China

Liquid trimethoxy silane-functionalized cis-polybutadiene(cis-PB-Si(OMe)3),possessing number-average molecular weights of cis-PB segments(Mn,PB)ranging from 1800 g/mol to 5400 g/mol,with cis-1,4 content of ca.80%and high functionality(>96%)could be synthesized by coordination copolymerization of living cis-PB chain ends with ethenyltrimethoxy-silane with neodymium-based catalytic *** silicon hydroxyl-functionalized cis-polybutadiene(cis-PB-Si(OH)_(3))-based micelles in water have been achieved by in situ hydrolysis of cis-PB-Si(OMe)_(3)in hexane/water mixture(pH=6.8)at 70℃and by sequential removal of residue *** size of the above micelles with soft elastic cis-PB cores could be remarkably enlarged by loading SiO_(2)nanoparticles on their surfaces via hydrogen bonding *** supramolecular long chain aggregates or networks formed by hydrogen bonding interaction and possible O—Si—O chemical bonds between cis-PB-Si(OH)3-based micellar surfaces had relatively large size and thus precipitated from water after several months of storage,leading to production of cis-PB-Si(OH)_(3)solid elastomer with extremely low T_(g)at−107.0℃.The left cis-PB-Si(OH)_(3)-based micelles in water with relatively small size gradually formed the water-insoluble cis-PB-Si(OH)_(3)-based supramolecular aggregates or *** cis-PB-Si(OH)_(3)-based supramolecular elastomer exhibited excellent self-healing property within 60 s at 25℃.The elastomer(20 mg)in a joint of 25 mm×30 mm(2.7 mg/cm^(2))provided very strong adhesion for two pieces of glass and the bound glass keep unchanged at room temperature for 98 h even hung with 100 g of steel column *** cis-PB-Si(OH)3-based supramolecular elastomer would have potential applications in adhesives,self-healing materials,damping materials and elastic materials.

关键词： Amphiphilicity Polybutadiene Core-shell micelles Supramolecular aggregates

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Concerted Steric and Electronic Strategy in Thermostable Salicylaldiminato Nickel Catalysts for Ethylene(Co)polymerization

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Chinese Journal of Polymer Science 2024年第8期42卷 1085-1092页

作者： Hong-Yu Ji Hong-Liang Mu Chun-Feng Tang Yu-Xing Zhang Yue Chi Zhong-Bao Jian Key Laboratory of Advanced Structural Materials Ministry of EducationSchool of Materials Science and EngineeringChangchun University of TechnologyChangchun 130012China State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China

Olefin polymerization is one of the most im portant chemical reactions in *** work presents a strategy that emphasizes the synergistic meta/poro-steric hindrance of N-aryl groups and electronic effects in newly synthesized neutral salicylaldiminato nickel *** nickel(Ⅱ)catalysts exhibit exceptional thermostability,ranging from 30℃to 130℃,demonstrating enhanced catalytic activities and broadly regulated polyethylene molecular weights(3-341 kg·mol^(-1))and controlled polymer branch density(2-102 brs/1000C).The preferred catalyst Ni3 with concerted steric and electronic effects enables the production of solid-state semi-crystalline polyethylene materials at temperatures below 90℃.Notably,Ni3 exhibits an impressive tolerance of 110℃and can withstand even the challenging polymerization temperature of 130℃,leading to the production of polyethylene wax and ***,functionalized polyethylene is produced.

关键词： Polyolefin Salicylaldiminato ligand Nickel catalyst Oil Wax

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advanced high-entropy alloys breaking the property limits of current materials

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Journal of Materials Science & technology 2024年第19期186卷 219-230页

作者： Dongyue Li Peter K.Liaw Lu Xie Yong Zhang Wenrui Wang School of Mechanical Engineering University of Science and Technology BeijingBeijing 100083China Department of Materials Science and Engineering The University of TennesseeKnoxvilleTN 37996USA Beijing Advanced Innovation Center of Materials Genome Engineering State Key Laboratory for Advanced Metals and MaterialsUniversity of Science and Technology BeijingBeijing 100083China

The growing need for stronger and more ductile structural materials has spurred an intense search for innovative,high-performance ***,alloys face a pervasive trade-off:high strength often comes at the expense of ductility and vice *** advent of high-entropy alloys(HEAs)offering both high strength and ductility has transformed this *** this work,we discuss the deformation mechanisms of HEAs,examine the foundations of the strength-ductility trade-off,and explore approaches for designing HEAs to surmount this ***,we analyze the factors that govern HEA-deformation performance,which in turn influence the HEA *** also propose a perspective on future research directions concerning the mechanical behavior of HEAs,highlighting potential breakthroughs and novel strategies to advance the field.

关键词： High-entropy alloy Strength-ductility Trade-off Microstructure Deformation mechanism

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Ultrafast-laser-treated poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)electrodes with enhanced conductivity and transparency for semitransparent perovskite solar cells

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Frontiers of Chemical Science and engineering 2023年第2期17卷 206-216页

作者： Yongshun Wang Yuxi Dou Zhengzhe Wu Yingxin Tian Yiming Xiong Juan Zhao De Fang Fuzhi Huang Yi-Bing Cheng Jie Zhong State Key Laboratory of Advanced Technology of Materials Composite Technology Wuhan University of TechnologyWuhan 430070China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Foshan 528216China School of Automobile Engineering Wuhan University of TechnologyWuhan 430070China Center for Materials Research and Analysis Wuhan University of TechnologyWuhan 430070China

Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)(PEDOT:PSS)is an important organic electrode for solution-processed low-cost electronic ***,it requires doping and post-solvent treatment to improve its conductivity,and the chemicals used for such treatments may affect the device fabrication *** this study,we developed a novel route for exploiting ultrafast lasers(femtosecond and picosecond laser)to simultaneously enhance the conductivity and transparency of PEDOT:PSS films and fabricate patterned solution-processed electrodes for electronic *** conductivity of the PEDOT:PSS film was improved by three orders of magnitude(from 3.1 to 1024 S·cm^(–1)),and high transparency of up to 88.5%(average visible transmittance,AVT)was *** and depthprofiling X-ray photoelectron spectroscopy revealed that the oxidation level of PEDOT was enhanced,thereby increasing the carrier *** surface PSS content also decreased,which is beneficial to the carrier mobility,resulting in significantly enhanced electrical ***,we fabricated semitransparent perovskite solar cells using the as-made PEDOT:PSS as the transparent top electrodes,and a power conversion efficiency of 7.39%was achieved with 22.63%***,the proposed route for synthesizing conductive and transparent electrodes is promising for vacuum and doping-free electronics.

关键词： PEDOT:PSS ultrafast laser transparent electrode ST-PSCs patterning

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Effect of temperature on the mechanical properties of Ni-based superalloys via molecular dynamics and crystal plasticity

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Journal of Materials Science & technology 2024年第36期203卷 126-142页

作者： Y.-Z.Liu Z.-L.Shi Y.-B.Zhang M.Qin S.-P.Hu X.-G.Song W.Fu B.-J.Lee State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin 150001China State Key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao 066000China Department of Materials Science and Engineering National University of SingaporeSingapore 117576Singapore Shandong Institute of Shipbuilding Technology Weihai 264209China Department of Materials Science and Engineering Pohang University of Science and TechnologyPohang 790784Korea

Study on the influence of temperature on the mechanical properties across multiple scales has been a focus on the research of Hastelloy-X(HX)alloys for the application in high-temperature structure *** this work,Molecular Dynamics(MD)and Crystal Plasticity(CP)are put together to solve it from atomic scale to mesoscopic *** research indicates that the deformation of HX alloy occurs in two stages at temperature below 300 K:initially,as stacking fault deforms,stacking fault can trans-form into twinning with increasing *** the temperature exceeds 300 K,deformation primarily forms a stacking *** twinning deformation path transforms from intrinsic stacking fault to extrin-sic stacking fault and then to twinning.A mesoscopic-scale CP model was developed using atomic-scale deformation mechanisms to bridge the gap between deformation mechanisms and experimental *** CP results indicate a functional relationship between the strength of HX alloy and *** relationship appears insensitive to crystal texture and grain *** grain morphology and texture into the model significantly impacts the strength response of calculating HX *** the ten-sile deformation of HX alloy at 300 and 1173 K,the atomic scale deformation results characterized by transmission electron microscopy are aligned with the MD simulation *** relationship between strength and temperature predicted by CP results has also been validated.A thorough investigation into the deformation behavior of HX alloys across different scales,employing MD and CP models,introduces a novel approach for predicting the mechanical properties of superalloys.

关键词： Molecular dynamics Twinning Superalloy High-temperature strength Crystal plasticity

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Synergistic enhancement of alkaline hydrogen evolution reaction by role of Ni-Fe LDH introducing frustrated Lewis pairs via vacancy-engineered

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Chinese Chemical Letters 2025年第3期36卷 512-516页

作者： Mianfeng Li Haozhi Wang Zijun Yang Zexiang Yin Yuan Liu Yingmei Bian Yang Wang Xuerong Zheng Yida Deng State Key Laboratory of Marine Resource Utilization in South China Sea School of Materials Science and EngineeringHainan UniversityHaikou 570228China Tianjin Key Laboratory of Composite and Functional Materials Key Laboratory of Advanced Ceramics and Machining Technology(Ministry of Education)School of Materials Science and EngineeringTianjin UniversityTianjin 300072China

The alkaline hydrogen evolution reaction(HER)is a crucial process for sustainable hydrogen production,yet it requires efficient and stable electrocatalysts to overcome the high activation energy *** article discusses a novel strategy for enhancing the performance of Ni-Fe layered double hydroxide(Ni-Fe LDH)in the alkaline HER by modifying it with a frustrated Lewis acid-base pair(FLP)constructed through vacancy *** study found that the modified Ni-Fe LDH exhibited improved alkaline HER *** functional theory(DFT)calculations demonstrate that the introduction of FLP can activate water and protons more efficiently than monometallic sites,thus reducing the alkaline HER energy barrier and *** HER under alkaline conditions,the Volmer step involves an additional hydrolysis dissociation compared to acidic conditions,which is one of the factors contributing to the slow reaction *** paper demonstrates that FLPs can alter the rate-determining step in alkaline HER from the Volmer step to a step with a lower energy barrier,more suitable for hydrogen *** work provides new insights into the role of FLPs in regulating the mechanism and kinetics of HER and opens a new direction for the design and optimization of LDH-based and other electrocatalysts.

关键词： Ni-Fe LDH Frustrated Lewis acid-base pair Density functional theory The ab initio molecular dynamics The alkaline hydrogen evolution reaction

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