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Polaron interfacial entropy as a route to high thermoelectric performance in DAE-doped PEDOT:PSS films

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National Science Review 2024年第3期11卷 259-270页

作者： Jiajia Zhang Caichao Ye Genwang Wei Liang Guo Yuhang Cai Zhi Li Xinzhi Wu Fangyi Sun Qikai Li Yupeng wang Huan Li Yuchen Li shuaihua wang Wei Xu Xuefeng Guo Wenqing Zhang Weishu Liu Department of Materials Science and Engineering Southern University of Science and Technology Academy for Advanced Interdisciplinary Studies and Guangdong Provincial Key Laboratory of Computational Science and Material Design Southern University of Science and Technology Department of Mechanical and Energy Engineering Southern University of Science and Technology Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences College of Chemistry and Molecular Engineering National Biomedical Imaging Centre Peking University Guangdong Provincial Key Laboratory of Functional Oxide Materials and Devices Southern University of Science and Technology

Enhancing the thermoelectric transport properties of conductive polymer materials has been a long-term challenge, in spite of the success seen with molecular doping strategies. However, the strong coupling between the thermopower and the electrical conductivity limits thermoelectric performance. Here, we use polaron interfacial occupied entropy engineering to break through this intercoupling for a PEDOT:PSS(poly（3,4-ethylenedioxythiophene）-poly（4-styrenesulfonate）) thin film by using photochromic diarylethene（DAE） dopants coupled with UV-light modulation. With a 10-fold enhancement of the thermopower from 13.5 μV K-1to 135.4 μV K-1and almost unchanged electrical conductivity, the DAE-doped PEDOT:PSS thin film achieved an extremely high power factor of 521.28 μW m-1K-2from an original value of 6.78 μW m-1K-2. The thermopower was positively correlated with the UV-light intensity but decreased with increasing temperature, indicating resonant coupling between the planar closed DAE molecule and PEDOT. Both the experiments and theoretical calculations consistently confirmed the formation of an interface state due to this resonant coupling. Interfacial entropy engineering of polarons could play a critical role in enhancing the thermoelectric performance of the organic film.

关键词： thermoelectric PEDOT: PSS interfacial occupied entropy resonant coupling UV-light modulation

铕掺杂Gd_(2)Zr_(2)O_(7)透明陶瓷的制备及闪烁性能

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硅酸盐学报 2024年第3期52卷 746-754页

作者：孙志成冯桂青王帅华丁雨憧吴少凡中国科学院福建物质结构研究所福州350002 闽都创新实验室福州350108 中国电子科技集团公司第二十六研究所重庆400060

与传统闪烁陶瓷相比,基于立方相Gd_(2)Zr_(2)O_(7)具有高密度、高光学透过率和良好的闪烁性能等特征,本工作采用真空烧结法,成功制备出系列Eu3+掺杂Gd_(2)Zr_(2)O_(7)透明陶瓷,研究了掺杂离子及掺杂量对其晶体结构、光学透过率、荧光性... 详细信息

与传统闪烁陶瓷相比,基于立方相Gd_(2)Zr_(2)O_(7)具有高密度、高光学透过率和良好的闪烁性能等特征,本工作采用真空烧结法,成功制备出系列Eu3+掺杂Gd_(2)Zr_(2)O_(7)透明陶瓷,研究了掺杂离子及掺杂量对其晶体结构、光学透过率、荧光性能及闪烁性能的影响。结果表明,所制备的透明陶瓷样品具有良好的光透过能力;光谱表征发现,20%Eu^(3+)掺杂Gd_(2)Zr_(2)O_(7)具有最佳的光致荧光和辐照发光强度,其最强发射峰位于630 nm。X射线成像实验表明,Gd_(1.8)Eu_(0.2)Zr_(2)O_(7)透明陶瓷的X射线成像分辨率可达11 lp·mm^(-1),具备对不同材质物体的成像应用潜力。在医学成像、工业探伤、高能物理等领域具有潜在的应用价值。

关键词：烧绿石缺陷萤石透明陶瓷闪烁性能空间分辨率

Illuminations for constructions of scintillating lanthanide–organic complexes in sensitive X-ray detection and high-resolution radiative imaging

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Chinese Chemical Letters 2022年第12期33卷 5132-5136页

作者： Juan Gao Jian Lu Baoyi Li Wenfei wang Meijuan Xie shuaihua wang Fakun Zheng Guocong Guo State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Fujian Science and Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350108China University of Chinese Academy of Sciences Beijing 100039China State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical SciencesUniversity of MacaoMacao SAR 999078China

X-ray detection and imaging via scintillators has been utilized in missions worldwide within areas of scientific research,medical industry,military defense and homeland *** scintillators are costly with high energy consumption through the *** is of great significance to seek alternative scintillating materials for sensitive X-ray detection in the ***,eight structure-defined Ln(Ⅲ)-based metal-organic frameworks(Ln-MOFs)were prepared,2D[Ln_(2)(1,4-ndc)_(3)(DMF)_(4)]_(n)·nH_(2)O(Ln=Sm 1,Eu 2,Dy 3,Tb 4)and 3D[Ln_(4)(2,6-ndc)_(6)(μ_(2)H_(2)O)2(H_(2)O)_(4)]n·2nH_(2)O(Ln=Sm 5,Eu 6,Dy 7,Tb 8),where 1,4-H_(2)ndc=1,4-naphthalene dicarboxylate acid,2,6-H_(2)ndc=2,6-napthalene dicarboxylate acid,DMF=N,*** compounds 2 and 6 show remarkable X-ray scintillation performance via the characteristic red emissions of Eu(Ⅲ)ions,in which the absorbed energy from the triplet states of the organic moieties can be transferred more efficiently to the resonance emission levels of Eu(Ⅲ)ions than other lanthanide(Ⅲ)*** X-ray dosage rate detection limits of 2 and 6 are superior to the standard for the medical X-ray diagnosis dosage *** proofs-of-concepts,matrix-mixed membranes fabricated with 2 and 6 have achieved remarkable X-ray imaging with high resolution for practical object shooting.

关键词： Scintillating materials Metal–organic frameworks Lanthanide coordination compounds X-ray detection X-ray imaging

Structure design and rice threshing performance of the variable-speed inertial pulley for simulating artificial threshing

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International Journal of Agricultural and Biological Engineering 2024年第1期17卷 33-40页

作者： Tiantian Jing Zhong Tang shuaihua Hao Cheng Shen Ting wang Meilin wang School of Agricultural Engineering Jiangsu UniversityZhenjiang 212013JiangsuChina Key Laboratory of Intelligent Equipment and Robotics for Agriculture of Zhejiang Province Hangzhou 310058China College of Engineering China Agricultural UniversityBeijing 100083China Nanjing Institute of Agricultural Mechanization Ministry of Agriculture and Rural AffairsNanjing 210014China Jiangsu World Agriculture Machinery Co. Ltd(WORLD A/M)Zhenjiang 212311JiangsuChina

Due to the small models and compact structures,small harvesters have also caused problems such as poor threshing separation performance and large loss *** order to solve unstable cleaning effects of small harvesters when they facing different working conditions,this study selected rice plants in hilly areas for the *** breaking force of different parts of mature rice was tested,which revealed the fracture mechanism of each part under the combined *** threshing method was used to simulate artificial plate bin and design three kinds of non-circular pulley variable speed transmission threshing *** the help of transient inertia force,threshing force was *** paper tested the harvesting performance of the variable speed threshing device with the help of the harvest performance *** show when facing the small rice planting area,the T/2 variable speed threshing device has better cleaning performance,and also the harvest loss rate of T/4 variable speed threshing device is the *** with the constant speed threshing device,the impurity content rate of the variable speed threshing device is increased by 0.64%to 8.76%;the loss rate is reduced by 0.45%to 1.79%,which provides a basis for the optimization design of small combine harvester in hilly areas.

关键词： small harvesters fracture mechanism transient inertia force non-circular pulley

Anionic entanglement-induced giant thermopower in ionic thermoelectric material Gelatin-CF_(3)SO_(3)K–CH_(3)SO_(3)K

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eScience 2023年第5期3卷 105-112页

作者： Qikai Li Cheng-Gong Han shuaihua wang Cai-Chao Ye Xinbo Zhang Xiao Ma Tao Feng Yuchen Li Weishu Liu Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhenGuangdong 518055China Shenzhen Engineering Research Center for Novel Electronic Information Materials and Devices Southern University of Science and TechnologyShenzhen 518055China Department of Mechanical Engineering The University of Hong KongPokfulam Road 999077Hong KongChina Center for Advanced Analytical Science Guangzhou Key Laboratory of Sensing Materials and DevicesGuangdong Engineering Technology Research Center for Photoelectric Sensing Materials and DevicesSchool of Chemistry and Chemical EngineeringGuangzhou UniversityGuangzhou 510006China

Ionic thermoelectric(i-TE)technologies can power Internet of Things(IoT)sensors by harvesting thermal energy from the environment because of their large *** research focuses mostly on using the interactions between ions and matrices to enhance i-TE performance,but i-TE materials can benefit from utilizing different methods to control ion ***,we introduced a new strategy that employs an ion entanglement effect.A giant thermopower of 28 mV K^(-1)was obtained in a quasi-solid-state i-TE Gelatin-CF_(3)SO_(3)K–CH_(3)SO_(3)K gel via entanglement between CF_(3)SO_(3)^(-)and CH_(3)SO_(3)^(-)*** anionic entanglement effect involves complex interactions between these two anions,slowing anionic thermodiffusion and thus suppressing bipolar effects and boosting p-type thermopower.A Au@Cu|Gelatin-CF_(3)SO_(3)K–CH_(3)SO_(3)K|Au@Cu i-TE device with a generator mode delivers a specific output energy density of 67.2 mJ m^(-2)K^(-2)during 2 h of ***-term operation.

关键词： Thermopower Thermodiffusion Ion interactions Energy harvesting Gelatin

Fe3O4/Fe/FeS Tri-Heterojunction Node Spawning N-Carbon Nanotube Scaffold Structure for High-Performance Sodium-Ion Battery

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Energy & Environmental Materials 2024年第4期7卷 143-152页

作者： Yuan Liu Qing Lin Xiaocui Chen Xufeng Meng Baoxiu Hou Haiyan Liu shuaihua Zhang Ningzhao Shang Zheng wang Chaoyue Zhang Jianjun Song Xiaoxian Zhao Department of Chemistry College of Science Hebei Agricultural University College of Chemistry and Chemical Engineering Qingdao University College of Physics Qingdao University

The Fe-based anode of sodium-ion batteries attracts much attention due to the abundant source,low-cost,and high specific ***,the low electron and ion transfer rate,poor structural stability,and shuttle effect of NaS2intermediate restrain its further ***,the Fe3O4/Fe/FeS tri-heterojunction node spawned N-carbon nanotube scaffold structure（FHNCS） was designed using the modified MIL-88B（Fe） as a template followed by catalytic growth and sulfidation process.

关键词： anode core-shell heterojunction hollow structure sodium ion batteries

Progress in Preparation and Application of Gel-Emulsions

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Journal of Materials Science and Chemical Engineering 2024年第9期12卷 84-98页

作者： Yang Liu shuaihua Liu Junhong wang Qiang Zhang Guanghui Tian School of Chemistry and Environment Science Shaanxi University of Technology Hanzhong China Shaanxi Key Laboratory of Catalysis Shaanxi University of Technology Hanzhong China

Compared to conventional emulsions, gel-emulsions have a higher internal phase volume fraction, unique structures and properties, higher viscosity, and tunable internal structures. These advantages make them widely applicable in the cosmetics industry, food industry, aerospace, and biomedicine, with significant potential in the development of new materials and high-performance products. The factors affecting the stability of gel-emulsions, as well as the types of stabilizers required for their preparation (including solid particles, surfactants, and small molecule gelators), and the corresponding preparation methods (including the one-step method, two-step method, and phase inversion method) are reviewed in this article. The applications of gel-emulsions in porous materials, food, cosmetics, and stimuli-responsive materials are introduced, and future research directions are also discussed.

关键词： Gel-Emulsions Stabilizers Porous Materials

Zn2+掺杂对共沉淀法制备Ce:Gd3Ga3Al2O12陶瓷粉体闪烁性能的影响

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稀有金属材料与工程 2020年第3期49卷 761-768页

作者：邱智华张鲜辉王帅华吴少凡林永红中国科学院福建物质结构研究所半导体光电材料及其高效转换器件协同创新中心福建福州350002 中国科学院大学北京100049

利用化学共沉淀法制备Zn2+共掺的Ce:GAGG陶瓷粉体。研究了Zn2+共掺的Ce:GAGG陶瓷前驱粉体的TG/DTA和FTIR曲线;分析了不同煅烧温度对Ce:GAGG陶瓷粉体相、形貌和颗粒度分布的影响;研究了Zn2+含量对Ce:GAGG陶瓷粉体光致发光,辐射发光,激发... 详细信息

利用化学共沉淀法制备Zn2+共掺的Ce:GAGG陶瓷粉体。研究了Zn2+共掺的Ce:GAGG陶瓷前驱粉体的TG/DTA和FTIR曲线;分析了不同煅烧温度对Ce:GAGG陶瓷粉体相、形貌和颗粒度分布的影响;研究了Zn2+含量对Ce:GAGG陶瓷粉体光致发光,辐射发光,激发光谱和荧光寿命的影响。研究表明:前驱粉体在883℃的相组成为GdAlO3相和GAGG相;前驱粉体在煅烧温度为900℃时,完全转化为GAGG相;当煅烧温度为1200℃时,GAGG颗粒尺寸控制在20~60nm,分布均匀;随着Zn2+含量的变化,光致发光和辐射发光强度也相应变化,特别的,当Zn2+含量为0.4 mol%时,光致发光和辐射发光强度达到最大值;随着Zn2+掺杂含量的上升,荧光寿命出现下降的趋势。因此,Zn2+含量对Ce:GAGG陶瓷粉体的辐射发光具有明显的影响,对降低荧光寿命具有积极的作用,对于提高GAGG闪烁材料的快速响应具有重要意义。

关键词：共沉淀法前驱粉体 Ce:GAGG陶瓷粉体 Zn2+共掺杂

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骨折患者状态焦虑影响因素分析

中国卫生产业 2013年第24期10卷 13-14页

作者：王帅华山东省临沂市人民医院骨三科山东临沂276000

目的本文主要研究骨折患者状态焦虑影响因素,为心理干预提供科学的理论依据。方法主要收集2011年12月—2012年12月收治的100例骨折患者具体资料,对所有患者生活采取事件量表、状态焦虑量表、领悟社会支持量表、防御方式问卷以及艾森克... 详细信息

目的本文主要研究骨折患者状态焦虑影响因素,为心理干预提供科学的理论依据。方法主要收集2011年12月—2012年12月收治的100例骨折患者具体资料,对所有患者生活采取事件量表、状态焦虑量表、领悟社会支持量表、防御方式问卷以及艾森克个性问卷调查的方法,最后分析患者的心理状态。结果骨折患者状态焦虑发生率是70.23%,根据逐步回归结果表明生活事件、不成熟防御方式、成熟防御方式、内向性格、朋友支持以及掩饰因子成为骨折患者状态焦虑发生的主要因素。结论骨折患者出现的焦虑发生率比较高,我们应该减少影响因素的干扰,以降低患者的焦虑程度,促进身心的康复。

关键词：骨折患者状态焦虑影响因素分析