检索结果-内蒙古大学图书馆

High-Performance Thermoelectric α-Ag9Ga1−xTe6Compounds with Ultralow Lattice Thermal Conductivity Originating from Ag9Te2Motifs

引用

Angewandte Chemie 2022年第36期134卷

作者： Yingfei Tang Yimeng Yu Na Zhao Keke Liu Haijie Chen Constantinos C. Stoumpos Yixuan Shi Shuo Chen Lingxiao Yu Jinsong Wu Qingjie Zhang Xianli Su Xinfeng Tang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China International School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 China Contribution: Conceptualization (equal) Data curation (lead) Formal analysis (lead) Investigation (equal) Methodology (equal) Visualization (equal) Writing - original draft (lead) Nanostructure Research Center Wuhan University of Technology Wuhan 430070 China Contribution: Data curation (equal) Software (equal) Visualization (supporting) Contribution: Investigation (equal) Methodology (equal) Contribution: Investigation (equal) Methodology (equal) Visualization (equal) State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Institute of Functional Materials College of Materials Science and Engineering Donghua University Shanghai 201620 China Contribution: Methodology (equal) Visualization (equal) Writing - review & editing (equal) Department of Materials Science and Technology Voutes Campus University of Crete Iraklio Heraklion 70013 Greece Contribution: Methodology (equal) Visualization (equal) Contribution: Investigation (equal) Visualization (equal) Contribution: Conceptualization (equal) Investigation (equal) Contribution: Methodology (equal) Contribution: Conceptualization (equal) Methodology (equal) Contribution: Conceptualization (equal) Investigation (equal) Methodology (equal) Writing - review & editing (equal) Contribution: Conceptualization (equal) Funding acquisition (lead) Methodology (equal) Supervision (equal) Writing - review & editing (equal)

We have determined the complex atomic structure of high-temperature α-Ag 9 GaTe 6 phase with a hexagonal lattice ( P 6 3 mc space group, a = b =8.2766 Å, c =13.4349 Å). The structure has outer [GaTe 4 ] 5− tetrahedrons and inner [Ag 9 Te 2 ] 5+ clusters. All of the Ag ions are disorderly distributed in the lattice. Seven types of the Ag atoms constitute the cage-like [Ag 9 Te 2 ] 5+ clusters. The highly disordered Ag ions vibrate in-harmonically, producing strong coupling between low frequency optical phonons and acoustic phonons. This in conjunction with a low sound velocity of 1354 m s −1 leads to an ultralow thermal conductivity of 0.20 W m −1 K −1 at 673 K. Meanwhile, the deficiency of Ga in Ag 9 Ga 1− x Te 6 compounds effectively optimizes the electronic transport properties. Ag 9 Ga 0.91 Te 6 attains a highest power factor of 0.40 mW m −1 K −2 at 673 K. All these contribute to a much-improved ZT value of 1.13 at 623 K for Ag 9 Ga 0.95 Te 6 , which is 41 % higher than that of the pristine Ag 9 GaTe 6 sample.

关键词： α-Ag9GaTe6 Crystal Structure Ga Deficiency Thermoelectrics Ultralow Lattice Thermal Conductivity

来源：评论

学校读者我要写书评

暂无评论

Formulating the Electrolyte Towards High-Energy and Safe Rechargeable Lithium–Metal Batteries

引用

Angewandte Chemie 2021年第30期133卷

作者： Qiang Ma Dr. Junpei Yue Min Fan Shuang-Jie Tan Dr. Juan Zhang Dr. Wen-Peng Wang Dr. Yuan Liu Yi-Fan Tian Dr. Quan Xu Prof. Ya-Xia Yin Prof. Ya You Prof. An Luo Prof. Sen Xin Prof. Xiong-Wei Wu Prof. Yu-Guo Guo College of Electrical and Information Engineering Hunan University Changsha Hunan 410082 P. R. China School of Chemistry and Materials Science College of Agronomy Hunan Agricultural University Changsha Hunan 410128 P. R. China CAS Key Laboratory of Molecular Nanostructure and Nanotechnology CAS Research/Education Center for Excellence in Molecular Sciences Beijing National Laboratory for Molecular Sciences (BNLMS) Institute of Chemistry Chinese Academy of Sciences (CAS) Beijing 100190 P. R. China Nanozyme Medical Center School of Basic Medical Sciences Zhengzhou University Zhengzhou 450001 P. R. China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 Hubei P. R. China

Rechargeable lithium–metal batteries with a cell-level specific energy of >400 Wh kg −1 are highly desired for next-generation storage applications, yet the research has been retarded by poor electrolyte–electrode compatibility and rigorous safety concerns. We demonstrate that by simply formulating the composition of conventional electrolytes, a hybrid electrolyte was constructed to ensure high (electro)chemical and thermal stability with both the Li-metal anode and the nickel-rich layered oxide cathodes. By employing the new electrolyte, Li∥LiNi 0.6 Co 0.2 Mn 0.2 O 2 cells show favorable cycling and rate performance, and a 10 Ah Li∥LiNi 0.8 Co 0.1 Mn 0.1 O 2 pouch cell demonstrates a practical specific energy of >450 Wh kg −1 . Our findings shed light on reasonable design principles for electrolyte and electrode/electrolyte interfaces toward practical realization of high-energy rechargeable batteries.

关键词： hybrid electrolytes in situ polymerization interfacial chemistry rechargeable lithium–metal batteries

来源：评论

学校读者我要写书评

暂无评论

Crystalline Porous Organic Salts: From Micropore to Hierarchical Pores

引用

advanced materials (Deerfield Beach, Fla.) 2020年第44期32卷 e2003270页

作者： Shen Yu Guo-Long Xing Li-Hua Chen Teng Ben Bao-Lian Su Laboratory of Living Materials at the State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology 122 Luoshi Road Wuhan 430070 P. R. China. Department of Chemistry Jilin University 2699 Qianjin Street Changchun 130012 P. R. China. CMI (Laboratory of Inorganic Materials Chemistry) University of Namur 61 rue de Bruxelles Namur B-5000 Belgium.

Crystalline porous organic salts (CPOSs), as an emerging class of porous organic materials, combining the uniform microporous system and distinct polarized channels, have become a highly evolving field of important current interest. The unique ionic bond of a CPOS endows the confined channels with high polarity, making CPOSs distinct from other organic frameworks. CPOSs show many fascinating properties, such as proton conductivity and fast transport of polar molecules, which involve the interaction between highly polarized guest molecules and host frameworks. Substantial progress has been made in the synthesis and applications of CPOSs. Herein, an overview is provided to impart a comprehensive understanding of the link between the synthetic approaches and the resultant microporous structure, the structure-function correlation and the state-of-the-art applications of CPOSs. The enhanced mass-transport performance of hierarchically porous structure in combination with the intrinsic polarized channels of CPOSs is very promising to create new applications and contribute to a new research upsurge. The perspective to construct porous hierarchy within the crystalline porous organic salts is assessed and will open a new research avenue. In the conclusion, the current challenges on the synthesis, structural regulation, and applications of CPOSs and the future of hierarchically porous crystalline organic salts are discussed.

关键词： crystalline porous organic salts hierarchically porous structures polar channels synthesis methods

来源：评论

学校读者我要写书评

暂无评论

[email protected] 2 hybrid microcapsules with high in vivo biocompatibility and stability for cell therapy

引用

Colloids and Surfaces B: Biointerfaces 2021年 203卷

作者： Grégory Leroux Myriam Neumann Christophe F. Meunier Virginie Voisin Isabelle Habsch Nathalie Caron Carine Michiels Li Wang Bao-Lian Su Laboratory of Inorganic Materials Chemistry (CMI) University of Namur 61 Rue de Bruxelles B-5000 Namur Belgium Namur Institute of Structured Matter (NISM) University of Namur 61 Rue de Bruxelles B-5000 Namur Belgium Molecular Physiology Research Unit (URPhyM) Namur Research Institute for Life Sciences (NARILIS) University of Namur 61 Rue de Bruxelles B-5000 Namur Belgium Laboratory of Biochemistry and Cell Biology (URBC) Namur Research Institute for Life Sciences (NARILIS) University of Namur 61 Rue de Bruxelles B-5000 Namur Belgium State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Luoshi Road 122 Wuhan 430070 China

Designing new materials to encapsulate living therapeutic cells for the treatment of the diseases caused by protein or hormone deficiencies is a great challenge. The desired materials need to be biocompatible towards both entrapped cells and host organisms, have long-term in vivo stability after implantation, allow the diffusion of nutrients and metabolites, and ensure perfect immune-isolation. The current work investigates the in vivo biocompatibility and stability of [email protected] 2 hybrid microcapsules and the immune-isolation of entrapped HepG2 cells, to assess their potential for cell therapy. A comparison was made with alginate-silica hybrid microcapsules (ASA). These two hybrid microcapsules are implanted subcutaneously in female Wistar rats. The inflammatory responses of the rats are monitored by the histological examination of the implants and the surrounding tissues, to indicate their in vivo biocompatibility towards the hosts. The in vivo stability of the microcapsules is evaluated by the recovery rate of the intact microcapsules after implantation. The immune-isolation of the entrapped cells is assessed by their morphology, membrane integrity and intracellular enzymatic activity. The results show high viability of the entrapped cells and insignificant inflammation of the hosts, suggesting the excellent biocompatibility of [email protected] 2 and ASA microcapsules towards both host organisms and entrapped cells. Compared to the ASA microcapsules, more intact [email protected] 2 hybrid microcapsules are recovered 2-day and 2-month post-implantation and more cells remain alive, proving their better in vivo biocompability, stability, and immune-isolation. The present study demonstrates that the [email protected] 2 hybrid microcapsule is a highly promising implantation material for cell therapy.

关键词： Hybrid hydrogels Cell encapsulation In vivo biocompatibility In vivo stability Immune isolation

来源：评论

学校读者我要写书评

暂无评论

1D carbon [email protected] 2 core-shell nanocomposites with enhanced photocatalytic activity toward CO 2 reduction

引用

Journal of Alloys and Compounds 2018年 746卷 168-176页

作者： Jinfeng Zhang Junwei Fu Shifu Chen Jiali Lv Kai Dai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan Hubei 430070 PR China College of Physics and Electronic Information Huaibei Normal University Huaibei Anhui 235000 PR China College of Chemistry and Material Science Huaibei Normal University Huaibei Anhui 235000 PR China Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei 230026 PR China

More and more serious energy crisis and greenhouse effect force people to find the appropriate solutions. Photocatalytic reduction of CO 2 into hydrocarbon fuels is one of the most potential strategies. In this paper, novel one-dimensional (1D) carbon [email protected] 2 core-shell nanocomposites have been prepared via electrospun synthesis of carbon nanofibers core followed by in situ growth of TiO 2 shell, which exhibit a 2.3-fold higher photocatalytic activity than the pure TiO 2 . The increase of catalytic performance attributed to higher specific surface areas of carbon [email protected] 2 core-shell nanocomposites for providing more surface-active sites. Moreover, the black carbon nanofibers promote light absorption, and the light energy can be converted into heat energy that can speed up the diffusion of reactants and products. Most importantly, the carbon nanofibers with good electrical conductivity can speed up the separation of the photo-induced electron and hole pairs in photocatalyst. This work provides a good synthesis of 1D core-shell heterostructure, and proves that the carbon nanofibers can be an ideal cocatalyst for enhancing photocatalytic CO 2 reduction performance of TiO 2 .

关键词： Composite materials Chemical synthesis X-ray diffraction CO 2 Photocatalytic reduction

来源：评论

学校读者我要写书评

暂无评论

Controlled Drug Release: Magnesium Particles Coated with Mesoporous Nanoshells as Sustainable Therapeutic-Hydrogen Suppliers to Scavenge Continuously Generated Hydroxyl Radicals in Long Term (Part. Part. Syst. Charact. 2/2019)

引用

Particle & Particle Systems Characterization 2019年第2期36卷

作者： Lei Kong Chuanrui Chen Fangzhi Mou Yizheng Feng Ming You Yixia Yin Jianguo Guan State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Materials Science and Engineering Wuhan University of Technology 122 Luoshi Road Wuhan 430070 P. R. China

来源：评论

学校读者我要写书评

暂无评论

Shape and structure controlling of calcium oxalate crystals by a combination of additives in the process of biomineralization

引用

RSC advances 2018年第20期8卷 11014-11020页

作者： Nian Liu Hao Xie Hang Ping Lin Wang Zewen Liu Fei Tao Junhui Guo Bao-Lian Su School of Chemistry Chemical Engineering and Life Sciences Wuhan University of Technology Wuhan 430070 China h.xie@***. Laboratory of Living Materials at the State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China bao-lian.su@unamur.be. Laboratory of Inorganic Materials Chemistry University of Namur B-5000 Namur Belgium.

The origin of complex hierarchical superstructures of biomaterials and their unique self-assembly mechanisms of formation are important in biological systems and have attracted considerable attention. In the present study, we investigated the morphological changes of calcium oxalate (CaO ) crystals induced by additives including chiral aspartic acid, sodium citrate, Mg, casein and combinations of these molecules. The morphology and structure of CaO were identified with the use of various techniques. The morphogenesis of CaO crystals were significantly affected by chiral aspartic acid, sodium citrate or Mg. However, they only formed calcium oxalate monohydrate (COM). It was observed that the chiral aspartic acid, sodium citrate and casein adhered to the surface of the crystals. The adherence of Mg to crystals was not evident. Casein significantly affected the formation of COM and calcium oxalate dihydrate (COD). The ratio of different CaO crystal forms is associated with the casein concentration. In combination with Mg or citrate ions, casein showed improved formation of COD. The present study mimics biomineralization with a simple chemical approach and provides insight into the complicated system of CaO biomineralization as well as facilitates the understanding of urinary stone treatment.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Ferromagnetic materials: Strong Ferromagnetism Achieved via Breathing Lattices in Atomically Thin Cobaltites (Adv. Mater. 4/2021)

引用

advanced materials 2021年第4期33卷

作者： Sisi Li Qinghua Zhang Shan Lin Xiahan Sang Ryan F. Need Manuel A. Roldan Wenjun Cui Zhiyi Hu Qiao Jin Shuang Chen Jiali Zhao Jia-Ou Wang Jiesu Wang Meng He Chen Ge Can Wang Hui-Bin Lu Zhenping Wu Haizhong Guo Xin Tong Tao Zhu Brian Kirby Lin Gu Kui-juan Jin Er-Jia Guo Beijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of Sciences Beijing 100190 China State Key Laboratory of Information Photonics and Optical Communications and Laboratory of Optoelectronics Materials and Devices School of Science Beijing University of Posts and Telecommunications Beijing 100876 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & Nanostructure research center Wuhan University of Technology 122 Luoshi Rd. Wuhan 430070 China NIST Center for Neutron Research National Institute of Standards and Technology (NIST) Gaithersburg MD 20899 USA Department of Materials Science and Engineering University of Florida Gainesville FL 32611 USA Eyring Materials Center Arizona State University Tempe AZ 85287 USA School of Physics and Microelectronics Zhengzhou University Zhengzhou 450052 China Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China Songshan Lake Materials Laboratory Dongguan Guangdong 523808 China China Spallation Neutron Source Institute of High Energy Physics Chinese Academy of Sciences Beijing 10049 China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049 China

来源：评论

学校读者我要写书评

暂无评论

Improved durability of Co3O4 particles supported on SmMn2O5 for methane combustion

引用

Catalysis Science & technology 2018年第15期8卷 3785-3794页

作者： Zijian Feng Chun Du Yongjie Chen Yun Lang Yunkun Zhao Kyeongjae Cho Rong Chen Bin Shan State Key Laboratory of Material Processing and Die and Mould Technology and School of Materials Science and Technology Huazhong University of Science and Technology Wuhan 430074 Hubei China State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metal Kunming Institute of Precious Metals Kunming 650106 Yunnan China Department of Materials Science and Engineering and Department of Physics University of Texas at Dallas Richardson TX 75080 USA State Key Laboratory of Digital Manufacturing Equipment and Technology and School of Mechanical Science and Engineering Huazhong University of Science and Technology Wuhan 430074 Hubei China

To eliminate the aggregation of Co3O4 in the methane combustion process at high temperature, a thermally stable mullite structure, SmMn2O5 (SMO), was utilized as a support to improve the catalytic durability of Co3O4 ...

To eliminate the aggregation of Co₃O₄ in the methane combustion process at high temperature, a thermally stable mullite structure, SmMn₂O₅ (SMO), was utilized as a support to improve the catalytic durability of Co₃O₄ particles. In detail, Co/SMO composite catalysts were prepared using the deposition–precipitation method with distinct Co/SMO nominal weight ratios of 5%, 30% and 50%. Later, their methane combustion performances under an oxygen-rich atmosphere were evaluated and compared. Meanwhile, their physical and chemical properties were characterized by XRD, Raman spectroscopy, the BET method, SEM, HRTEM, XPS, H₂-TPR and O₂-TPD. H₂-TPR and O₂-TPD results illustrated that the Co/SMO-50% catalyst showed the highest reducibility and it enhanced the mobility of oxygen species. As a result, the Co/SMO-50% sample exhibited the highest CH₄ combustion catalytic activity among all the composite catalysts. Specifically, the T₁₀, T₅₀, and T₉₀ for methane combustion were measured to be 334 °C, 390 °C, and 437 °C, very similar to those of Co₃O₄ catalyst. At the same time, the Co/SMO-50% catalyst showed improved durability, better performance after recycling, thermal aging and long-term experiments when compared to the Co₃O₄ catalyst.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Styrene-terminated polyphenylene oxide and polybutadiene low dielectric reactive blend

引用

IOP Conference Series: materials Science and Engineering 2019年第1期699卷

作者： W Hu J Shen J Zhou W Jin W Chen State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 P. R. China State Key Laboratory of Silicate Materials for Architectures Wuhan University of Technology Wuhan 430070 P. R. China

Styrene-terminated polyphenylene oxide (SPPO) and low polar thermosetting polybutadiene (PB) resin were employed to obtain a curing system with excellent electrical properties and enhanced thermal properties. By terminal styrenisation, SPPO is cured with PB, forming a continuous phase in the blend. The SPPO/PB blends have excellent solvent resistance and thermal stability, while the good dielectric performance is retained. Especially, when the mass ratio of PB is 0.5, the curing system has a high T g of 226.5°C and excellent dielectric properties with Dk = 2.46 and Df = 0.0022 at 10 GHz, which is suitable for high frequency electrical applications.

关键词：

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：