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Nano Research 2025年第2期18卷 317-327页

作者： Changfei Liu Sailong Wang Zhengyi Lu Jiaqing Zhao yuchen wu Chaojie Ren Ruizhi Yang Chao Jin College of Energy Soochow Institute for Energy and Materials InnovationsSoochow UniversitySuzhou 215006China

Technical breakthrough of composite polymer electrolyte(CPE)is one of the key factors that determines the commercial process of the current solid-state lithium ***,high interface impedance limits its electrochemical *** is crucial to optimize the design of multiphase interfaces among different components in CPE for regulating Li+***,a multi-affinity self-assembled 12-crown-4-TFSI(12C4-TFSI)supramolecular nanolayer is introduced into poly(vinylidene difluoride)-Li_(6.75)La_(3)Zr_(1.75)Ta_(0.25)O_(12)(PVDF-LLZTO)CPE as interface *** a result,enhanced Li+conductivity of 4.29×10^(-4)S·cm^(-1),Li+transfer number of 0.44,and stable electrochemical window voltage of 4.8 V ***/Li+at 30℃ are *** symmetric Li||Li cell exhibits an improved critical current density(CCD)of 1.2 mA·cm^(-2) and steady cycling at 0.2 mA·cm^(-2) for over 850 h without visible voltage *** assembled LiǁLiFePO4 coin solid-state cell delivers a high initial discharge capacity of 172.9 mAh·g^(-1) at 0.1 C,rate capability(up to 5.0 C)and outstanding cycling stability with a capacity retention of 87.2% after over 750 cycles at 1.0 *** associated LiǁLiFePO4 pouch cell presents an initial specific discharge capacity of 112.3 mAh·g−1 and successfully runs 30 cycles with a final capacity of 101.8 mAh·g^(-1).This work offers a facile strategy to optimize multiphase interfaces of PVDF-LLZTO CPE for stable solid-state lithium battery.

关键词： solid-state lithium battery composite polymer electrolyte interface impedance modifier supramolecular

CNTs/CNF-supported multi-active components as highly efficient bifunctional oxygen electrocatalysts and their applications in zincair batteries

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Nano Research 2023年第4期16卷 4793-4802页

作者： Weiyuan Ding Ali Saad yuchen wu Zhiwei Wang Xiuting Li Institute for Advanced Study Shenzhen UniversityShenzhen 518060China College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen 518060China

Rational construction of active components has been the biggest challenge in preparing efficient bifunctional oxygen ***,electrospinning and chemical vapor deposition(CVD)were employed to embed active species including FeCo nanoparticles,MNx(M=Fe,Co),and FePx in porous and graphitized carbon nanotubes(CNTs)/carbon nanofiber(CNF).The as-prepared FeCo@CoNx@FePx/C exhibited a half-wave potential as high as 0.86 V in oxygen reduction reaction(ORR)and low oxygen evolution reaction(OER)overpotential of 368 mV at 10 mA·cm^(−2),which are superior to Pt/C(0.83 V)and IrO_(2)(375 mV)*** assembled Zn-air battery(ZAB)showed a high energy efficiency(Edischarge/Echarge)of 65%at 20 mA·cm^(−2)and stabilized for 700 charge-discharge *** spectroscopic and microscopic characterizations evidenced that the outstanding bifunctionality of the electrocatalyst can be ascribed to three main reasons:First,FeCo nanoparticles are rich in MOH/MOOH active sites for OER,and FePx/CNTs constructed with CVD also modulate electronic structure to improve electron transfer;second,both MNx in carbon matrix and FePx/CNTs are highly active towards ORR;third,the CNTs/CNF are highly porous and graphitized,which promotes mass transport and improves electrical conductivity and stability of the *** work gives important implications on the design of bifunctional electrocatalysts.

关键词： carbon nanotubes(CNTs)/carbon nanofiber(CNF)-supported multi-active components oxygen reduction reaction oxygen evolution reaction zinc-air battery

Special Issue of Bio-inspired Material Chemistry

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Chemical Research in Chinese Universities 2023年第1期39卷 1-2页

作者： wu yuchen XIA Fan WANG Shutao Key Laboratory of Bio-inspired Materials and Interfacial Science Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190P.R.China State Key Laboratory of Biogeology and Environmental Geology Engineering Research Center of Nano-Geomaterials of Ministry of EducationFaculty of Material Science and ChemistryChina University of GeosciencesWuhan 430074.P.R.China

Bio-inspired smart materials are attracting more and more research interest because of their unique properties to pave the way to many real-world applications,eg.,biomimetic fins,actively moving polymers,neural memory... 详细信息

关键词： materials attracting moving

Pore scale numerical investigation of counter-current spontaneous imbibition in multi-scaled pore networks

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Petroleum 2023年第4期9卷 558-571页

作者： yuchen wu Xiukun Wang Chaofan Zhang Chenggang Xian China University of Petroleum(Beijing) Beijing102249China

The multi-scaled pore networks of shale or tight reservoirs are considerably different from the conventional sandstone *** hydraulic fracturing treatment,the spontaneous imbibition process plays an important role in the productivity of the horizontal *** the color-gradient model of Lattice Boltzmann Method(LBM)accelerated with parallel computing,we studied the countercurrent spontaneous imbibition process in two kinds of pore structures with different interlacing distributions of large and small *** effect of geometry configuration of pore arrays with different pore-scale and the capillary number Ca on the mechanism of counter-current spontaneous imbibition as well as the corresponding oil recovery factor are *** found that the wetting phase tends to invade the small pore array under small Ca in both types of geometry configurations of different pore arrays of four pore arrays *** wetting phase also tends to invade the pore array near the inlet for injecting the wetting phase no matter if it is a large pore array or small pore array except for the situation when the Ca is large to a certain *** this situation,the small pore arrays show resistance to the wetting phase,so the wetting phase doesn't invade the small pore near the inlet,but invades the large pore *** the geometry configurations of different pore arrays and Ca have a significant effect on the oil recovery *** work will help to solve the doubt about the selectivity of the multi-scaled pores of the wetting phase and the role of pores with different sizes in imbibition and oil draining in countercurrent spontaneous imbibition processes.

关键词： Countercurrent spontaneous imbibition Multi-scaled pore structures Selectivity of wetting phase to pore size Lattice Boltzmann method

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执行功能在学前儿童词汇理解中的作用

南京理工大学学报(社会科学版) 2025年第1期38卷 78-88页

作者：李洪兰孙欣瑶吴雨晨南京理工大学外国语学院江苏南京210094

执行功能在儿童词汇发展中起着重要作用。以4岁和5岁学前儿童为研究对象,探究执行功能的三个子成分工作记忆、抑制控制和认知灵活性在其词汇理解中的特定预测作用。研究结果显示,在排除了年龄和执行功能其他相关子成分的影响后,只有工... 详细信息

执行功能在儿童词汇发展中起着重要作用。以4岁和5岁学前儿童为研究对象,探究执行功能的三个子成分工作记忆、抑制控制和认知灵活性在其词汇理解中的特定预测作用。研究结果显示,在排除了年龄和执行功能其他相关子成分的影响后,只有工作记忆显著预测被试的词汇理解能力。这一研究结果能够为教师组织学前儿童词汇教学提供启发。教师在教授新词的时候,根据儿童现有的工作记忆能力设计相应的教学活动,可以帮助他们更有效地学习新词,进而促进其语言发展。

关键词：执行功能词汇理解抑制控制认知灵活性工作记忆

Evaluation of the weakening behavior of gas on the coal strength and its quantitative influence on the coal deformation

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International Journal of Mining Science and Technology 2021年第3期31卷 451-462页

作者： Haijun Guo Kai Wang yuchen wu Hanlu Tang Jianguo wu Lianhe Guan Chenyang Chang Chao Xu Beijing Key Laboratory for Precise Mining of Intergrown Energy and Resources China University of Mining and Technology-BeijingBeijing 100083China School of Emergency Management and Safety Engineering China University of Mining and Technology-BeijingBeijing 100083China State Key Laboratory of Coal Resources and Safe Mining China University of Mining and Technology-BeijingBeijing 100083China Kailuan(Group)Co. Ltd.Tangshan 063018China

The coal strength and deformation properties are key factors affecting safe coal mining and highefficiency coalbed methane(CBM)*** this paper,reconstituted coal samples are chosen to investigate the weakening behavior of gas on coal strength,meanwhile,its effects on coal deformation are quantitatively *** results indicate that the weakening degree of gas on coal strength is closely related to the confining stress and gas *** with non-gas-saturated coals,the maximum weakening ratios of adsorbed gas to coal strength are 10.58%,18.12%,8.55%and 14.65%under the conditions of confining stress CS=3 MPa and gas pressure GP=1 MPa,CS=3 MPa and GP=2 MPa,CS=4 MPa and GP=1 MPa,and CS=4 MPa and GP=2 MPa,***,the maximum weakening ratios of free gas to coal strength are 18.27%,36.54%,14.79%and 29.58%,respectively,under above four *** maximum coal bulk strain decreases as particle sizes of coal powders increase,and it has a maximum value of 0.0227 and a minimum value of 0.0191 in particle size ranges of 0.01–0.041 and 0.5–1 *** the same conditions,the coal bulk strain increases with increasing gas pressure,revealing that coal deformation properties can be enhanced by gas.

关键词： Gas-saturated coal Coal strength Weakening effect Coal deformation Quantitative evaluation Mechanical loading

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基于修正引力模型的兰西城市群经济空间分析

科技和产业 2025年第2期25卷 153-157页

作者：吴昱辰杨民安钱勇生兰州交通大学建筑与城市规划学院兰州730000 兰州交通大学交通运输学院兰州730000

以兰西城市群作为研究对象,基于引力模型和城市首位度,结合各市现状,对研究区域内各个城市经济质量分类,进而分析城市群经济空间结构和其间的相互作用。结果表明,兰州市是兰西城市群重要的经济增长极;城市群内经济首位度排名较低的城市... 详细信息

以兰西城市群作为研究对象,基于引力模型和城市首位度,结合各市现状,对研究区域内各个城市经济质量分类,进而分析城市群经济空间结构和其间的相互作用。结果表明,兰州市是兰西城市群重要的经济增长极;城市群内经济首位度排名较低的城市间联系较弱。目前兰西城市群面临单核城市群发展动力不足、城市群内资源错配和双核建设困难等问题。据此提出相应策略,为兰西城市群在区域协调发展新机制背景下的西北经济高质量发展提供参考。

关键词：兰西城市群首位度城市引力模型

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枇杷核淀粉的结构及理化性能研究

食品与发酵工业 2025年第2期51卷 41-51页

作者：毛启慧吴雨晨罗庆龄刘滢陈嘉雷琳赵国华叶发银西南大学食品科学学院重庆400715 川渝共建特色食品重庆市重点实验室重庆400715

该文以2个枇杷主栽品种(大红袍、大五星)为原料,提取枇杷核淀粉,并对其结构及理化性能进行研究。结果表明,枇杷核淀粉的提取得率分别为23.97%、24.64%(鲜重),淀粉颗粒呈现一定的粒度分布(D_(50)=10.70μm、12.00μm;Span=0.93、1.31)和... 详细信息

该文以2个枇杷主栽品种(大红袍、大五星)为原料,提取枇杷核淀粉,并对其结构及理化性能进行研究。结果表明,枇杷核淀粉的提取得率分别为23.97%、24.64%(鲜重),淀粉颗粒呈现一定的粒度分布(D_(50)=10.70μm、12.00μm;Span=0.93、1.31)和外形多样性,大颗粒呈球形或半球形,表面光滑,较小颗粒呈椭球形或多角形。枇杷核淀粉的分支度为2.82%、2.83%,直链淀粉的h Am,i=0.54、0.55,β_(Am,i)=5.40×10^(-4)、5.45×10^(-4),h Am,ii=0.58、0.60,β_(Am,ii)=18.05×10^(-4)、18.85×10^(-4),直链淀粉含量为17.62%、18.83%,链长分布无显著性差异。枇杷核淀粉晶型为C A型,相对结晶度分别为26.98%、28.40%,片层结构厚度为9.236 nm,属于表面分形。2种淀粉的持油性、糊化焓和凝胶弹性等理化参数无显著性差异;但相比于大五星,大红袍淀粉的溶解性、膨胀性、凝胶内聚性、回复性等更高,峰值糊化温度、峰值黏度、凝胶硬度和胶黏性则更低。此外,天然枇杷核淀粉的抗性淀粉含量>94%。该研究可为枇杷核淀粉在淀粉凝胶食品及抗消化食品配料等方面的潜在应用提供参考。

关键词：淀粉枇杷核分子结构理化性质体外消化

Chlorine-substituted chiral 2D perovskite microwires with enhanced lattice rigidity for sensitive circularly polarized light detection

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Science China Chemistry 2023年第12期66卷 3602-3610页

作者： Meng Yuan yuchen Qiu Yingjie Zhao Yuyan Zhao Hui Li Xiao Wei Gaosong Chen Jiangang Feng Hanfei Gao Jinjin Zhao Jiahui Zhao Lei Jiang yuchen wu Key Laboratory of Bio-inspired Materials and Interfacial Science Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China College of Chemistry Zhengzhou UniversityZhengzhou 450001China College of Chemistry Jilin UniversityChangchun 130012China Key Laboratory for Special Functional Materials of Ministry of Education National and Local Joint Engineering Research Center for High-Efficiency Display and Lighting TechnologyCollaborative Innovation Center of Nano Functional Materials and ApplicationsHenan UniversityKaifeng 475004China University of Chinese Academy of Sciences(UCAS) Beijing 100049China Department of Electrical and Computer Engineering National University of SingaporeSingapore 117585Singapore Suzhou Institute for Advanced Research University of Science and Technology of ChinaSuzhou 215123China Ji Hua Laboratory Foshan 528000China Department of Physics Shanxi Datong UniversityDatong 037009China

Chiral two-dimensional(2D) perovskites offer numerous attractive features for optoelectronics owing to their soft, deformable lattices and a high degree of chemical tunability. While tremendous advances have been made in perovskite-based direct circularly polarized light(CPL) detection, the low circular polarization anisotropy factor and sensitivity of those photodetectors arising from large lattice distortion still limit practical applications. Herein, chiral 2D perovskite-based single-crystalline microwire arrays with enhanced circular dichroism(CD) absorption are fabricated with the synergy of the capillary-bridgeconfined assembly method and chlorine-substituted phenethylamine(Cl-MBA). Compared with phenethylamine(MBA)-inserted perovskites, the smaller lattice distortion and increased halogen–halogen interaction within Cl–MBA-inserted perovskites strengthen lattice rigidity and weaken electron–phonon coupling to improve carrier transport and thermal stability, resulting in high-performance CPL photodetectors with an anisotropy factor of 0.25, responsivity exceeding 95.7±9.3 A W^(-1)and detectivity exceeding(3.05±0.30)×10^(13)Jones. This work opens a new perspective to modulate circular polarization sensitivity and will be helpful to realize promising implementations in quantum computation and communication.

关键词： chiral perovskites microwire arrays lattice rigidity circular polarization photodetectors

Impact of lithium nitrate additives on the solid electrolyte interphase in lithium metal batteries

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Chinese Journal of Structural Chemistry 2024年第2期43卷 17-23页

作者： Mengwen Wang Qintao Sun Yue Liu Zhengan Yan Qiyu Xu yuchen wu Tao Cheng Institute of Functional Nano&Soft Materials(FUNSOM) Jiangsu Key Laboratory of Advanced Negative Carbon TechnologiesSoochow UniversitySuzhou215123JiangsuPR China

Lithium metal batteries(LMBs)represent a promising frontier in energy storage technology,offering high energy density but facing significant *** this work,we address the critical challenge of lithium dendrite for-mation in LMBs,a key barrier to their efficiency and *** on the potential of electrolyte additives,specifically lithium nitrate,to inhibit dendritic growth,we employ advanced multi-scale simulation techniques to explore the formation and properties of the solid electrolyte interphase(SEI)on the anode *** study introduces a novel hybrid simulation methodology,HAIR(Hybrid ab initio and Reactive force field Molecular Dynamics),which combines ab initio molecular dynamics(AIMD)and reactive force field molecular dynamics(RMD).This approach allows for a more precise and reliable examination of the interaction mechanisms of nitrate additives within *** findings demonstrate that lithium nitrate contributes to the formation of a stable and fast ionic conductor interface,effectively suppressing dendrite *** insights not only advance our un-derstanding of dendrite formation and mitigation strategies in lithium metal batteries,but also highlight the efficacy of HAIR as a pioneering tool for simulating complex chemical interactions in battery materials,offering significant implications for the broader field of energy storage technology.

关键词： Lithium metal batteries Dendrite suppression Solid electrolyte interphase Hybrid ab initio Reactive force field molecular dynamics Electrolyte additives