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Green Energy & Environment 2024年第1期9卷 71-80页

作者： Weijie Kou Yafang Zhang wenjia wu Zibiao Guo Quanxian Hua Jingtao Wang School of Chemical Engineering Zhengzhou UniversityZhengzhou450001China

Solid polymer electrolyte(SPE) shows great potential for all-solid-state batteries because of the inherent safety and flexibility;however, the unfavourable Li+deposition and large thickness hamper its development and application. Herein, a laminar MXene functional layer-thin SPE layer-cathode integration(MXene-PEO-LFP) is designed and fabricated. The MXene functional layer formed by stacking rigid MXene nanosheets imparts higher compressive strength relative to PEO electrolyte layer. And the abundant negatively-charged groups on MXene functional layer effectively repel anions and attract cations to adjust the charge distribution behavior at electrolyte–anode interface. Furthermore,the functional layer with rich lithiophilic groups and outstanding electronic conductivity results in low Li nucleation overpotential and nucleation energy barrier. In consequence, the cell assembled with MXene-PEO-LFP, where the PEO electrolyte layer is only 12 μm, much thinner than most solid electrolytes, exhibits uniform, dendrite-free Li+deposition and excellent cycling stability. High capacity(142.8 mAh g-1), stable operation of 140 cycles(capacity decay per cycle, 0.065%), and low polarization potential(0.5 C) are obtained in this Li|MXene-PEO-LFP cell,which is superior to most PEO-based electrolytes under identical condition. This integrated design may provide a strategy for the large-scale application of thin polymer electrolytes in all-solid-state battery.

关键词： MXene nanosheet Laminar functional layer Thin polymer electrolyte Dendrite-free Liþdeposition All-solid-state lithium battery

Lamellar quasi-solid electrolyte with nanoconfined deep eutectic solvent for high-performance lithium battery

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Nano Research 2024年第7期17卷 6176-6183页

作者： Shiwei Liu Jing Wang Keqi wu Zhirong Yang Yan Dai Junmei Zhang wenjia wu Jingtao Wang School of Chemical Engineering Zhengzhou UniversityZhengzhou 450001China

Electrolytes with high-efficiency lithium-ion transfer and reliable safety are of great importance for lithium *** having superior ionic conductivity(10^(−3)–10^(−2) S·cm^(−1)),traditional liquid-state electrolytes always suffer from low lithium-ion transference number(tLi+<0.4)and thus undesirable battery ***,the deep eutectic solvent(DES)is vacuum-filtered into the~1 nm interlayer channel of vermiculite(Vr)lamellar framework to fabricate a quasi-solid electrolyte(Vr-DES QSE).We demonstrate that the nanoconfinement effect of interlayer channel could facilitate the opening of solvation shell around ***,the interaction from channel wall could inhibit the movement of *** enable high-efficiency lithium-ion transfer:2.61×10^(−4)S·cm^(−1)at 25°***,the tLi+value reaches 0.63,which is 4.5 times of that of bulk DES,and much higher than most present liquid/quasi-solid *** addition,Vr-DES QSE shows significantly improved interfacial stability with Li anode as compared with *** assembled Li symmetric cell can operate stably for 1000 h at 0.1 mA·cm^(−2).The lithium iron phosphate(LFP)|Vr-DES QSE|Li cell exhibits high capacity of 142.1 mAh·g^(−1)after 200 cycles at 25°C and 0.5 C,with a capacity retention of 94.5%.The strategy of open solvation shell through nanoconfinement effect of lamellar framework may shed light on the development of advanced electrolytes.

关键词： quasi-solid electrolyte deep eutectic solvent lamellar structure lithium-ion transference number solvation shell

Formatted PVDF in lamellar composite solid electrolyte for solidstate lithium metal battery

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Nano Research 2024年第6期17卷 5159-5167页

作者： Xinji Zhang Yafang Zhang Shiyue Zhou Jingchuan Dang Chenye Wang wenjia wu Jingtao Wang School of Chemical Engineering Zhengzhou UniversityZhengzhou 450001China

Solid polymer electrolytes(SPEs)hold great application potential for solid-state lithium metal battery because of the excellent interfacial contact and processibility,but being hampered by the poor room-temperature conductivity(~10^(−7)S·cm^(−1))and low lithium-ion transference number(tLi+).Here,a lamellar composite solid electrolyte(Vr-NH_(2)@polyvinylidene fluoride(PVDF)LCSE)withβ-conformation PVDF is fabricated by confining PVDF in the interlayer channel of-NH_(2)modified vermiculite lamellar *** demonstrate that the conformation of PVDF can be manipulated by the nanoconfinement effect and the interaction from channel *** presence of-NH_(2)groups could induce the formation ofβ-conformation PVDF through electrostatic interaction,which serves as continuous and rapid lithium-ion transfer *** a result,a high room-temperature ionic conductivity of 1.77×10^(−4)S·cm^(−1)is achieved,1-2 orders of magnitude higher than most ***,Vr-NH_(2)@PVDF LCSE shows a high tLi+of 0.68 because of the high dielectric constant,~3 times of that of PVDF SPE,and surpassing most of reported *** LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)||Li cell assembled by Vr-NH_(2)@PVDF LCSE obtains a discharge specific capacity of 137.1 mAh·g^(−1)after 150 cycles with a capacity retention rate of 93%at 1 C and 25℃.This study may pave a new avenue for high-performance SPEs.

关键词： solid-state lithium metal battery lamellar composite solid electrolyte β-conformation polyvinylidene fluoride(PVDF) room-temperature ionic conductivity lithium-ion transference number

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苏南卡通IP衍生品设计的本地化策略

南京艺术学院学报（美术与设计） 2024年第4期 197-201页

作者：吴文佳苏州工艺美术职业技术学院数字艺术学院江苏苏州215000

文章以苏南地区文化为依托,以“本地化”视角分析卡通IP衍生品创作路径,通过对国内外优秀实例分析,将卡通IP与衍生品作为整体研究对象,思考其促进本地文化在大众传播中的价值。在IP衍生品市场需求越来越多元且不断增大的情况下,尝试通... 详细信息

文章以苏南地区文化为依托,以“本地化”视角分析卡通IP衍生品创作路径,通过对国内外优秀实例分析,将卡通IP与衍生品作为整体研究对象,思考其促进本地文化在大众传播中的价值。在IP衍生品市场需求越来越多元且不断增大的情况下,尝试通过本地文化研究抓住契机,发挥苏南当地文化和人才储备优势,初步建立针对IP衍生品设计的本地化策略。

关键词：苏南本地化卡通IP衍生品

开放大学创新创业教育质量满意度提升研究——基于成渝地区双城经济圈的调查分析

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湖北开放大学学报 2024年第1期44卷 30-37页

作者：吴文嘉四川开放大学四川成都610073

通过问卷和访谈方式对成渝地区三所开放大学创新创业教育满意度展开调查,并运用SPSS软件进行实证分析,结果显示:学生对学校创新创业教育满意度和教学质量的总体评价处于较高水平;不同学情、专业和学历层次的学生在创新创业教育满意度上... 详细信息

通过问卷和访谈方式对成渝地区三所开放大学创新创业教育满意度展开调查,并运用SPSS软件进行实证分析,结果显示:学生对学校创新创业教育满意度和教学质量的总体评价处于较高水平;不同学情、专业和学历层次的学生在创新创业教育满意度上存在显著差异;系统学习创新创业理论,编写创业项目策划书、提升创业团队管理能力是学生最迫切的需求;性别、创业实践和创业比赛经历对提升创业意愿有正向作用。从加强政策支持、优化创业环境,打造多元化教育主体,开展精准化创业教育,优化创业教育课程体系四个方面提出了提升成渝地区双城经济圈高校创新创业教育高质量发展的建议。

关键词：成渝地区双城经济圈创新创业教育质量满意度调查分析

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乘客信息系统智能技术应用分析

铁道运营技术 2024年第1期30卷 46-50页

作者：吴文佳中车青岛四方机车车辆股份有限公司山东青岛266111

随着现代科技和城市规模的高速发展,城市轨道交通的运营管理也在全面加强服务质量的提升,其中对乘客信息系统的智能化应用提出了诸多要求,不仅可以为乘客提供更优质的服务,而且还能有效提高城市轨道交通的商业开发及管理、服务水平。围... 详细信息

随着现代科技和城市规模的高速发展,城市轨道交通的运营管理也在全面加强服务质量的提升,其中对乘客信息系统的智能化应用提出了诸多要求,不仅可以为乘客提供更优质的服务,而且还能有效提高城市轨道交通的商业开发及管理、服务水平。围绕目前城轨车辆中乘客信息系统常见的几种智能技术,如客流密度分析、客室遗留物分析、司机行为分析等多种视频分析技术、音频环路助听技术等,进行了探讨与分析,提出了多种智能技术应用方案,为后续乘客信息系统的技术发展奠定基础。

关键词：乘客信息系统智能化视频分析技术音频环路助听技术

Laminar Composite Solid Electrolyte with Poly(Ethylene Oxide)-Threaded Metal-Organic Framework Nanosheets for High-Performance All-Solid-State Lithium Battery

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Energy & Environmental Materials 2023年第1期6卷 264-273页

作者： Na Peng Weijie Kou wenjia wu Shiyuan Guo Yan Wang Jingtao Wang School of Chemical Engineering Zhengzhou UniversityZhengzhou 450001China Henan Institute of Advanced Technology Zhengzhou UniversityZhengzhou 450003China

Developing laminar composite solid electrolyte with ultrathin thickness and continuous conduction channels in vertical direction holds great promise for all-solid-state lithium ***,a thin,laminar solid electrolyte is synthesized by filtrating–NH 2 functionalized metal-organic framework nanosheets and then being threaded with poly(ethylene oxide)chains induced by the hydrogen-bonding interaction from–NH_(2) *** is demonstrated that the threaded poly(ethylene oxide)chains lock the adjacent metal-organic framework nanosheets,giving highly enhanced structural stability(Young’s modulus,1.3 GPa)to 7.5-μm-thick laminar composite solid ***,these poly(ethylene oxide)chains with stretching structure serve as continuous conduction pathways along the chains in *** makes the non-conduction laminar metal-organic framework electrolyte highly conductive:3.97×10^(−5) S cm^(−1) at 25℃,which is even over 25 times higher than that of pure poly(ethylene oxide)*** assembled lithium cell,thus,acquires superior cycling stability,initial discharge capacity(148 mAh g^(−1) at 0.5 C and 60℃),and retention(94% after 150 cycles).Besides,the pore size of nanosheet is tailored(24.5–40.9˚A)to evaluate the mechanisms of chain conformation and ion transport in confined *** shows that the confined pore only with proper size could facilitate the stretching of poly(ethylene oxide)chains,and meanwhile inhibit their disorder ***,the pore size of 33.8˚A shows optimized confinement effect with trans-poly(ethylene oxide)and cis-poly(ethylene oxide)conformation,which offers great significance in ion *** design of poly(ethylene oxide)-threaded architecture provides a platform and paves a way to the rational design of next-generation high-performance porous electrolytes.

关键词： all-solid-state lithium battery ion conduction laminar composite solid electrolyte poly(ethylene oxide)-threaded metal-organic framework nanosheet structural stability

Nafion-threaded MOF laminar membrane with efficient and stable transfer channels towards highly enhanced proton conduction

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Nano Research 2022年第4期15卷 3195-3203页

作者： Yan Wang Hexiang Gao wenjia wu Zhuofan Zhou Zhiwei Yang Jingtao Wang Yecheng Zou School of Chemical Engineering Zhengzhou UniversityZhengzhou 450001China Henan Institute of Advanced Technology Zhengzhou UniversityZhengzhou 450003China Engineering Research Center of Advanced Functional Material Manufacturing of Ministry of Education School of Chemical EngineeringZhengzhou UniversityZhengzhou 450001China State Key Laboratory of Fluorinated Functional Membrane Materials Shandong DongYue Polymer Material Co.LtdZibo 256400China

Porous laminar membranes hold great promise to realize ultrafast ion transfer if efficient and stable transfer channels are constructed in vertical ***,metal-organic framework(MOF)nanosheets bearing imidazole molecules in the pores were designed as building blocks to assemble free-standing MOF laminar ***,Nafion chains were threaded into the pores induced by electrostatic attraction from imidazole molecules by slowly filtering dilute Nafion *** demonstrate that the threaded Nafion chains lock adjacent MOF nanosheets,affording highly enhanced structural stability to the resultant laminar membrane with almost no water ***,abundant acid-base pairs are formed in the pores along Nafion chains,working as efficient,continuous conduction pathways in vertical *** conductivities as high as 110 and 46 mS·cm^(-1)are obtained by this membrane under 100%and 40%relative humidity(RH),respectively,which are two orders of magnitude higher than that of pristine MOF *** conductivity under low humidity(40%RH)is even over 2 times higher than that of commercial Nafion membrane,generating the maximum power density of 1,100 mW·cm^(-2)in hydrogen fuel cell(vs.291 mW·cm^(-2)of Nafion membrane).Besides,the influence of water state on proton transfer in confined space is investigated in detail.

关键词： MOF nanosheet Nafion-threaded MOF laminar membrane structural stability proton conductivity hydrogen fuel cell

Manipulating the ionic nanophase of Nafion by in-situ precise hybridization with polymer quantum dot towards highly enhanced fuel cell performances

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Nano Research 2022年第5期15卷 4124-4131页

作者： wenjia wu Zhuofan Zhou Yan Wang Yatao Zhang Yong Wang Jingtao Wang Yecheng Zou School of Chemical Engineering Zhengzhou UniversityZhengzhou 450001China Henan Institute of Advanced Technology Zhengzhou UniversityZhengzhou 450003China State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing 211816China State Key Laboratory of Fluorinated Functional Membrane Materials Shandong DongYue Polymer Material Co.Ltd.Zibo 256400China

Hierarchical-structure materials hold great promise for numerous applied domains such as fuel cell,sensor,and ***,the developments are significantly impeded by the lack of efficient strategy permitting precise and efficient decoration of specific confined ***,an in-situ precise hybridization strategy is proposed to efficiently manipulate the nanostructure of membrane ***,Nafion ionic nanochannels are impregnated with precursors via heat swelling,followed by microwave-assisted condensation to form polymer quantum dot *** formation of polymer quantum dot network significantly improves the stability and functionality of ionic nanophase(i.e.,ionic nanochannel).This helps hybrid membrane achieving enhanced proton conduction and methanol barrier properties,resulting in over ten times increase in proton/methanol *** then impart prominent device performances for both hydrogen and methanol fuel cells with the elevation of~100%.Importantly,such function manipulation of ionic nanochannels is achieved with fully maintaining function of backbone ***,the regulation of physical topology and chemical environment of ionic nanochannel also brings optimization of gas and ion separation *** facile and versatile strategy may open up a new avenue for decorating confined space of many hierarchical-structure materials.

关键词： nanophase-separated membrane in-situ precise hybridization polymer quantum dot nanophase decoration performance enhancement

Free-standing polymer-metal-organic framework membrane with high proton conductivity and water stability

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Nano Research 2023年第5期16卷 7950-7957页

作者： Hexiang Gao Zhanpeng Gao Chao Ye Guoli Zhou Zhiwei Yang Kun Dai wenjia wu Jingtao Wang School of Chemical Engineering Zhengzhou UniversityZhengzhou 450001China School of Chemical Engineering&Advanced Materials The University of AdelaideAdelaide 5005Australia School of Materials Science and Engineering Key Laboratory of Materials Processing and MoldMinistry of EducationZhengzhou UniversityZhengzhou 450001China

As a new class of porous material,polymer-metal-organic framework(polyMOF)has attracted tremendous interests owing to their combined advantages of polymer and crystalline ***,the poor film-forming ability of polyMOF limits its widespread application,especially in membrane separation ***,for the first time,we demonstrate the fabrication of freestanding polyMOF *** polyMOF nanosheets are synthesized by a polymer-assisted self-inhibition crystal growth *** by self-assembly through vacuum filtration,a 20μm-thick free-standing polyMOF membrane is *** from the inclusion of polymer with hydrophobic backbone and the continuously distributed non-coordinated hydrophilic groups along polymer chain,the polyMOF membrane attains excellent structure stability against water,as well as superior proton transfer *** conductivity as high as 112 and 25.6 mS·cm^(–1)is obtained by this polyMOF membrane at 100%and 20%relative humidity(RH),respectively,which are two orders of magnitude higher than those of pristine *** conductivity under low humidity(20%RH)is even over 8 times higher than that of commercial Nafion membrane(3 mS·cm^(–1)).This study may provide some guidance on the development of polyMOF membranes.

关键词： polymer-metal-organic framework membrane nanosheet self-inhibition continuous transfer pathway proton conduction