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Effect of Topology Structure on the Output Performance of an Automobile Exhaust Thermoelectric Generator

IOP Conference Series: materials Science and Engineering 2017年第1期199卷

作者： W Fang S H Quan C J Xie B Ran X L Li L Wang Y T Jiao T W Xu Hubei Key Laboratory of Advanced Technology for Automotive Components Automobile Engineering Institute Wuhan University of Technology 205 Luoshi Road Hongshan District Wuhan 430070 China. School of Automation Wuhan University of Technology Wuhan 430070 China Corresponding author. Tel.: +86 027 87859589 Department of Civil & Environment Engineering University of Wisconsin Madison USA State Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of Technology Wuhan China Fax: +86 027 87859589.

The majority of the thermal energy released in an automotive internal combustion cycle is exhausted as waste heat through the tail pipe. This paper describes an automobile exhaust thermoelectric generator (AETEG), designed to recycle automobile waste heat. A model of the output characteristics of each thermoelectric device was established by testing their open circuit voltage and internal resistance, and combining the output characteristics. To better describe the relationship, the physical model was transformed into a topological model. The connection matrix was used to describe the relationship between any two thermoelectric devices in the topological structure. Different topological structures produced different power outputs; their output power was maximised by using an iterative algorithm to optimize the series-parallel electrical topology structure. The experimental results have shown that the output power of the optimal topology structure increases by 18.18% and 29.35% versus that of a pure in-series or parallel topology, respectively, and by 10.08% versus a manually defined structure (based on user experience). The thermoelectric conversion device increased energy efficiency by 40% when compared with a traditional car.

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Light-Assisted Semi-Hydrogenation of 1,3-Butadiene with Water

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Angewandte Chemie (International ed. in English) 2022年第38期61卷 e202210573页

作者： Qi-Chen Wei Ya Chen Zhao Wang Da-Zhuang Yu Wei-Hao Wang Jian-Quan Li Li-Hua Chen Yu Li Bao-Lian Su Laboratory of Living Materials the State Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of Technology Wuhan 430070 Hubei China. Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Guangdong Laboratory Xianhu Hydrogen Valley Foshan 528200 P. R. China. Laboratory of Inorganic Materials Chemistry (CMI) University of Namur 61 rue de Bruxelles 5000 Namur Belgium.

Sustainable processes for semi-hydrogenation of alkynes/alkadienes impurities in alkenes feedstocks are in great demand in industry as the utilization of excessive hydrogen, high temperature and unsatisfactory alkenes selectivity of the current thermo-catalytic route, however, their development is still challenging. Herein, we innovate a light-assisted semi-hydrogenation process in gas-feed fixed bed reactor, with water as hydrogen atom source by in situ photocatalysis. Using Pd/TiO as model catalyst, this process shows an excellent catalytic performance for the semi-hydrogenation of 1,3-butadiene, with 100 % of butenes selectivity at ≈99 % of conversion over 180 h of reaction at ambient temperature driven by 66 mW cm of irradiation intensity. This light-driven, H -free, ambient temperature semi-hydrogenation process, with superior performance to that of thermocatalytic route, shows attractive to bring an evolution in industrial hydrogenation technology to an economical and safe way.

关键词： 1,3-Butadiene Pd/TiO2 Photocatalysis Semi-Hydrogenation Unsaturated Hydrocarbons

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磺酸钠基天然橡胶离聚体/聚苯胺复合材料的力学、电学性能

磺酸钠基天然橡胶离聚体/聚苯胺复合材料的力学、电学性能

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2012年全国高分子材料科学与工程研讨会

作者： Pan YongJun 潘勇军 Xie HongQuan 陈勇 Chen Yong 崔丽 College of Material Science and Engineering Wuhan Textile University Wuhan 430074 China 武汉纺织大学材料科学与工程学院武汉 430073 Department of Chemistry Huazhong University of Science and Technology Wuhan 430074China 武汉理工大学复合材料国家重点实验室武汉 430070 State key laboratory of advanced technology for materials synthesis and processingWuhan University of Technology Wuhan 430070 China

在胶乳状态下,利用甲酸和双氧水将天然橡胶分子链进行环氧化后用亚硫酸氢钠开环制备了磺酸钠基天然橡胶离聚体,并将苯胺在天然橡胶磺酸钠离聚体中进行原位聚合制备了聚苯胺/天然橡胶离聚体(PAn/INR)的复合材料。结果表明,利用开环反应... 详细信息

在胶乳状态下,利用甲酸和双氧水将天然橡胶分子链进行环氧化后用亚硫酸氢钠开环制备了磺酸钠基天然橡胶离聚体,并将苯胺在天然橡胶磺酸钠离聚体中进行原位聚合制备了聚苯胺/天然橡胶离聚体(PAn/INR)的复合材料。结果表明,利用开环反应将磺酸基接枝于天然橡胶分子链上而制得INR.添加了聚苯胺的复合材料其电导率最高可以达到5.264S·cm-1,比未添加聚苯胺时的导电率提高了18倍,其物理机械性能得到明显的提高,尤其是拉伸强度和最大伸长率均随聚苯胺含量的增加而增加；扫描电镜分析也说明聚苯胺与橡胶基质之间有了良好的界面粘合力。

关键词：磺酸钠基天然橡胶离聚体聚苯胺复合材料性能表征

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Commensurate stacking phase transitions in an intercalated transition metal dichalcogenide

arXiv

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arXiv 2021年

作者： Yang, Xiaohui Bao, Jin-Ke Lou, Zhefeng Li, Peng Jiang, Chenxi Wang, Jialu Sun, Tulai Liu, Yabin Guo, Wei Ramakrishnan, Sitaram Kotla, Surya Rohith Tolkiehn, Martin Paulmann, Carsten Cao, Guang-Han Nie, Yuefeng Li, Wenbin Liu, Yang van Smaalen, Sander Lin, Xiao Xu, Zhu-An Zhejiang Province Key Laboratory of Quantum Technology and Device Department of Physics Zhejiang University Hangzhou310027 China Key Laboratory for Quantum Materials of Zhejiang Province School of Science Westlake University Hangzhou310024 China Institute of Natural Sciences Westlake Institute for Advanced Study Hangzhou310024 China Laboratory of Crystallography University of Bayreuth Bayreuth95447 Germany Department of Physics Materials Genome Institute International Center for Quantum and Molecular Structures Shanghai University Shanghai200444 China Center for Correlated Matter Zhejiang University Hangzhou310058 China Center for Electron Microscopy State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology College of Chemical Engineering Zhejiang University of Technology Hangzhou310014 China School of Materials Science and Engineering Zhejiang University Hangzhou310027 China National Laboratory of Solid State Microstructures College of Engineering and Applied Sciences Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing210093 China Department of Quantum Matter AdSM Hiroshima University Higashi-Hiroshima739-8530 Japan P24 PETRA III DESY Hamburg22607 Germany Mineralogisch-Petrographisches Institute Universität Hamburg Hamburg20146 Germany State Key Lab. of Silicon Materials Zhejiang University Hangzhou310027 China Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province School of Engineering Westlake University Zhejiang Province Hangzhou310024 China

Intercalation and stacking order modulation are two active ways in manipulating the interlayer interaction of transition metal dichalcogenides (TMDCs), which lead to a variety of emergent phases and allow for engineering material properties. Herein, the growth of Pb intercalated TMDCs–Pb(Ta1+xSe2)2, the first 124-phase, is reported. Pb(Ta1+xSe2)2 exhibits a unique two-step first-order structural phase transition at around 230 K. The transitions are solely associated with the stacking degree of freedom, evolving from a high temperature phase with ABC stacking and symmetry R3m to an intermediate phase with AB stacking and P3m1, and finally to a low temperature phase with again symmetry R3m, but with ACB stacking. Each step involves a rigid slide of building blocks by a vector [1/3, 2/3, 0]. Intriguingly, gigantic lattice contractions occur at the transitions on warming. At low temperature, bulk superconductivity with Tc ≈ 1.8 K is observed. The underlying physics of the structural phase transitions are discussed from first-principle calculations. The symmetry analysis reveals topological nodal lines in the band structure. Our results demonstrate the possibility to realize higher order metal intercalated phases of TMDCs, advance our knowledge of polymorphic transitions and may inspire stacking order engineering in TMDCs and beyond. Copyright © 2021, The Authors. All rights reserved.

关键词： Transition metals

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Influence of oxygen content on hardness of Cr(N,O) thin films deposited by an RF sputtering method

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IOP Conference Series: materials Science and Engineering 2011年第1期20卷

作者： J Shirahata T Ohori H Asami T Suzuki T Nakayama H Suematsu S W Lee Z Fu K Niihara Extreme Energy-Density Research Institute Nagaoka University of Technology 1603-1 Kamitomioka Nagaoka 940-2188 Japan Department of Mechanical Engineering Tomakomai national college of Technology 433 Nishikioka Tomakomai 059-1275 Japan Department of Environmental Engineering Sun Moon University Chungnam 336-708 Korea State Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China

Cr(N,O) thin films were deposited by radio frequency reactive unbalanced magnetron sputtering on Si(100) or glassy carbon substrates. In this paper, the influence of oxygen content on hardness of Cr(N,O) thin films was investigated. The compositional analysis was carried out by Rutherford backscattering spectroscopy. It was found that these thin films contained up to 44at.% of oxygen. Phases in the samples were determined by X-ray diffraction. Cr(N,O) thin films show only peaks based on CrN. The microstructure was observed by utilizing a transmission electron microscope. At <1at.% of oxygen, crystallite size was approximately 100nm. Then, in accordance with increasing of oxygen content, crystallite size was decreased. The hardness of thin films was measured by using a nanoindenter. The micro hardness was changed with varying the oxygen content and the microstructure such as crystallite size. Thus, it was thought that the hardening on Cr(N,O) thin films was caused by solution hardening and/or Hall-Petch relationship.

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Hydrogen/Electron Amphiphilic Bi-Functional Water Molecular Inactivator-Assisted Interface Stabilization in Highly Reversible Zn Metal Batteries

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Angewandte Chemie 2024年第7期137卷

作者： Wenwei Zhang Dr. Shaohua Zhu Tong Yang Lu Wu Jinghao Li Jiang Liang Dr. Yu Liu Lianmeng Cui Chen Tang Xinran Chen Huiqing Zhou Fan Qiao Min Zhou Prof. Ping Luo Fengtong Chi Dr. Xiaobin Liao Prof. Lei Zhang Prof. Qinyou An State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China The State Key Laboratory of Refractories and Metallurgy and Institute of Advanced Materials and Nanotechnology Wuhan University of Science and Technology Wuhan 430081 China School of Chemistry and Chemical Engineering Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China School of Materials and Chemical Engineering Hubei University of Technology Wuhan 430068 China Hubei Longzhong Laboratory Wuhan University of Technology (Xiangyang Demonstration Zone) Xiangyang Hubei 441000 China Zhongyu Feima New Material Technology Innovation Center (Zhengzhou) Co. Ltd. High Technology Industrial Development Zone Zhengzhou 450001 China

Continuous hydrogen-bond-network in aqueous electrolytes can lead to uncontrollab.e hydrogen transfer, and combining the interfacial parasitic electron consumption cause the side reaction in aqueous zinc metal batteries (AZMBs). Herein, hydrogen/electron amphiphilic bi-functional 1,5-Pentanediol (PD) molecule was introduced to stabilize the electrode/electrolyte interface. Stronger proton affinity of -OH in PD can break bulk-H 2 O hydrogen-bond-network to inhibit the activity of water, and electron affinity can enhance electron acceptation capability, which ensures that PD is preferentially bound to electrode material over H 2 O. Besides, the participation of PD in the Zn 2+ solvation structure reduces water content at the solid–liquid interface and promotes uniform deposition process by optimizing Zn 2+ de-solvation energy. Accordingly, dense and vertical zinc texture based on intrinsic steric hindrance effect of PD and formed SEI protective layer to induce stable Zinc anode-electrolyte interface. Moreover, an organic–inorganic shielding water layer was formed at the cathode side to suppress vanadium dissolution in vanadium Oxide. Consequently, Zn//Zn symmetric cell could cycle for more than 5600 hours at 1 mAh cm −2 @1 mA cm −2 (more than 250 hours at 50 °C). Besides, the VO 2 and I 2 cathode all achieved stable cycling performance and former pouch cell could reach average capacity of 0.13 Ah.

关键词： Electrode/electrolyte interface Active-water SEI Electron and proton affinity Cathode dissolution

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High-Entropy Lithium Argyrodite Solid Electrolytes Enabling Stable All-Solid-state Batteries

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Angewandte Chemie 2023年第50期135卷

作者： Shenghao Li Jing Lin Mareen Schaller Sylvio Indris Xin Zhang Torsten Brezesinski Ce-Wen Nan Shuo Wang Florian Strauss Center of Smart Materials and Devices State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & School of Material Science and Engineering Wuhan University of Technology Wuhan 430070 China Institute of Nanotechnology Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany Institute for Applied Materials-Energy Storage Systems (IAM-ESS) Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and Engineering Tsinghua University Beijing 100084 China Foshan (Southern China) Institute for New Materials Foshan 528200 China

Superionic solid electrolytes (SEs) are essential for bulk-type solid-state battery (SSB) applications. Multicomponent SEs are recently attracting attention for their favorable charge-transport properties, however a thorough understanding of how configurational entropy (Δ S conf ) affects ionic conductivity is lacking. Here, we successfully synthesized a series of halogen-rich lithium argyrodites with the general formula Li 5.5 PS 4.5 Cl x Br 1.5- x (0≤ x ≤1.5). Using neutron powder diffraction and 31 P magic-angle spinning nuclear magnetic resonance spectroscopy, the S 2− /Cl − /Br − occupancy on the anion sublattice was quantitatively analyzed. We show that disorder positively affects Li-ion dynamics, leading to a room-temperature ionic conductivity of 22.7 mS cm −1 (9.6 mS cm −1 in cold-pressed state) for Li 5.5 PS 4.5 Cl 0.8 Br 0.7 (Δ S conf =1.98 R ). To the best of our knowledge, this is the first experimental evidence that configurational entropy of the anion sublattice correlates with ion mobility. Our results indicate the possibility of improving ionic conductivity in ceramic ion conductors by tailoring the degree of compositional complexity. Moreover, the Li 5.5 PS 4.5 Cl 0.8 Br 0.7 SE allowed for stable cycling of single-crystal LiNi 0.9 Co 0.06 Mn 0.04 O 2 (s-NCM90) composite cathodes in SSB cells, emphasizing that dual-substituted lithium argyrodites hold great promise in enabling high-performance electrochemical energy storage.

关键词： Argyrodite High-Entropy materials Solid Electrolyte Solid-state Batteries

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Cover Feature: Ultrasensitive, Sustainable, and Selective Electrochemical Hydrazine Detection by ALD-Developed Two-Dimensional WO3(ChemElectroChem 2/2018)

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ChemElectroChem 2017年第2期5卷

作者： Zihan Wei Zhenyin Hai Mohammad Karbalaei Akbari Prof. Jie Hu Lachlan Hyde Prof. Stephen Depuydt Prof. Francis Verpoort Prof. Serge Zhuiykov Ghent University Global Campus Department of Applied Analytical & Physical Chemistry 119 Songdomunhwa-ro Yeonsu-gu Incheon South Korea Micro and Nano System Research Center Key Lab of Advanced Transducers and Intelligent Control System (Ministry of Education) & College of Information Engineering Taiyuan University of Technology Taiyuan 030024 Shanxi PR China Factory of the Future Swinburne University of Technology Hawthorn Australia National Research Tomsk Polytechnic University Lenin Avenue 30 634050 Tomsk Russian Federation Laboratory of Organometallics Catalysis and Ordered Materials State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Center for Chemical and Material Engineering Wuhan University of Technology Wuhan P.R. China

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Designing Polymer-in-Salt Electrolyte and Fully Infiltrated 3D Electrode for Integrated Solid-state Lithium Batteries

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Angewandte Chemie 2021年第23期133卷

作者： Wenyi Liu Chengjun Yi Linpo Li Shuailei Liu Qiuyue Gui Deliang Ba Prof. Yuanyuan Li Prof. Dongliang Peng Prof. Jinping Liu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing and School of Chemistry Chemical Engineering and Life Science Wuhan University of Technology Wuhan Hubei 430070 P. R. China School of Optical and Electronic Information Huazhong University of Science and Technology Wuhan 430074 P. R. China State Key Lab of Physical Chemistry of Solid Surface Fujian Key Laboratory of Materials Genome Collaborative Innovation Center of Chemistry for Energy Materials College of Materials Xiamen University Xiamen 361005 P. R. China

Solid-state lithium batteries (SSLBs) are promising owing to enhanced safety and high energy density but plagued by the relatively low ionic conductivity of solid-state electrolytes and large electrolyte–electrode interfacial resistance. Herein, we design a poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP)-based polymer-in-salt solid electrolyte (PISSE) with high room-temperature ionic conductivity (1.24×10 −4 S cm −1 ) and construct a model integrated TiO 2 /Li SSLB with 3D fully infiltration of solid electrolyte. With forming aggregated ion clusters, unique ionic channels are generated in the PISSE, providing much faster Li + transport than common polymer electrolytes. The integrated device achieves maximized interfacial contact and electrochemical and mechanical stability, with performance close to liquid electrolyte. A pouch cell made of 2 SSLB units in series shows high voltage plateau (3.7 V) and volumetric energy density comparable to many commercial thin-film batteries.

关键词： 3D electrolyte infiltration interfacial engineering nanostructured thin-film batteries polymer-in-salt electrolytes solid-state lithium batteries

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Hydrophobic interface layer improves the moisture tolerance and efficiency of ambient air-processed perovskite solar cells

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Fundamental Research 2024年

作者： Wanjie Yin Huiming Luo Ligang Yuan Yuxuan Sun Xiao Yang Longyan Zhang Yong Peng Qing-Song Jiang Faculty of Electronic Information Engineering Huaiyin Institute of Technology Huai'an 223003 China Institute for Materials Discovery University College London Malet Place London WC1E 7JE UK Key Laboratory for Optoelectronic Information Perception and Instrumentation of Jiangxi Province Key Laboratory of Nondestructive Testing Ministry of Education School of the Testing and Photoelectric Engineering Nanchang Hangkong University Nanchang 330063 China State Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China

Because perovskite films degrade quickly in humidity conditions, perovskite solar cells (PSCs) prepared in ambient air still show lower photovoltaic performance than those prepared in an inert atmosphere. Here, we offer an effective interfacial passivation method via a poly(N-vinylcarbazole) (PVK) layer to protect perovskite films and prevent their moisture degradation under ambient air conditions. The power conversion efficiency of the PVK-based champion PSC is 23.27% and is higher than that of the control PSC (20.94%). Meanwhile, the PVK-based perovskite films exhibit a large water contact angle, which is attributed to the hydrophobic nature of the uniformly deposited PVK layer. This leads to no significant effect for the PVK-based perovskite film with moisture degradation for 6 days under an RH of 50%, and the corresponding PVK-based PSC exhibits a higher efficiency of 21.64% PCE and a smaller hysteresis index (HI). Moreover, even after 3550 hours of storage in an argon glovebox, the PVK-based PSC retains 98% of its initial efficiency.

关键词： perovskite solar cells ambient air fabrication poly(N-vinylcarbazole) surface passivation hydrophobic property

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