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Managing Secondary Phase Lead Iodide in Hybrid Perovskites via Surface Reconstruction for High-Performance Perovskite Solar Cells with Robust Environmental Stability

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Angewandte Chemie 2023年第18期135卷

作者： Linfeng Ye Dr. Pengfei Guo Dr. Jie Su Kaiyuan Zhang Chen Liu Penghui Yang Wenhao Zhao Pengzhen Zhao Prof. Zhe Liu Prof. Jingjing Chang Dr. Qian Ye Prof. Hongqiang Wang State Key Laboratory of Solidification Processing Center for Nano Energy Materials School of Materials Science and Engineering Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU) Xi'an 710071 China Contribution: Investigation (lead) Methodology (lead) Writing - original draft (equal) Writing - review & editing (equal) Chongqing Innovation Center Northwestern Polytechnical University Chongqing 401135 China Contribution: Investigation (equal) Writing - original draft (equal) Writing - review & editing (equal) School of Microelectronics State Key Discipline Lab of Wide Band Gap Semiconductor Technology Shaanxi Joint Key Lab of Graphene Advanced Interdisciplinary Research Center for Flexible Electronics Xidian University Xi'an 710071 China

Rationally managing the secondary-phase excess lead iodide (PbI 2 ) in hybrid perovskite is of significance for pursuing high performance perovskite solar cells (PSCs), while the challenge remains on its conversion to a homogeneous layer that is robust stable against environmental stimuli. We herein demonstrate an effective strategy of surface reconstruction that converts the excess PbI 2 into a gradient lead sulfate-silica bi-layer, which substantially stabilizes the perovskite film and reduces interfacial charge transfer barrier in the PSCs device. The perovskite films with such bi-layer could bear harsh conditions such as soaking in water, light illumination at 70 % relative humidity, and the damp-thermal (85 °C and 30 % humidity) environment. The resulted PSCs deliver a champion efficiency up to 24.09 %, as well as remarkable environmental stability, e.g., retaining 78 % of their initial efficiency after 5500 h of shelf storage, and 82 % after 1000 h of operational stability testing.

关键词： Environmental Stability Hybrid Perovskite Lead Iodide Perovskite Solar Cells Surface Reconstruction

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Author Correction: Concise N-doped Carbon Nanosheets/Vanadium Nitride Nanoparticles materials via Intercalative Polymerization for Supercapacitors

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Scientific reports 2018年第1期8卷 6428页

作者： Yongtao Tan Ying Liu Zhenghua Tang Zhe Wang Lingbin Kong Long Kang Zhen Liu Fen Ran State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals Lanzhou University of Technology Lanzhou 730050 P. R. China. School of Material Science and Engineering Lanzhou University of Technology Lanzhou 730050 Gansu P. R. China. Guangzhou Key Laboratory for Surface Chemistry of Energy Materials New Energy Research Institute School of Environment and Energy South China University of Technology Guangzhou Higher Education Mega Centre Guangzhou 510006 China. Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal South China University of Technology Guangzhou Higher Education Mega Centre Guangzhou 510006 China. Department of Chemistry Xavier University of Louisiana New Orleans LA 70125 USA. Department of Physics & Engineering Frostburg State University Frostburg MD 21532-2303 USA. zliu@frostburg.edu. State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals Lanzhou University of Technology Lanzhou 730050 P. R. China. ranfen@***. School of Material Science and Engineering Lanzhou University of Technology Lanzhou 730050 Gansu P. R. China. ranfen@***.

A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has not been fixed in the paper.

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Corrigendum to “Microstructure evolution and reaction mechanism of Pb(Zr 1/2 Ti 1/2 )O 3 –Pb (Zn 1/3 Nb 2/3 )O 3 –Pb(Ni 1/3 Nb 2/3 )O 3 piezoelectric ceramics with plate-like PbTiO 3 template” [Ceram. Int. (2021) 470–478]

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Ceramics International 2022年第6期48卷 8796-8796页

作者： Leilei Li Junting Liu Shuyao Cao Jie Xu Changying Wu Emilia Pawlikowska Mikołaj Szafran Feng Gao State Key Laboratory of Solidification Processing MIIT Key Laboratory of Radiation Detection Materials and Devices NPU-QMUL Joint Research Institute of Advanced Materials and Structures (JRI-AMAS) School of Materials Science and Engineering Northwestern Polytechnical University Xi'an Shaanxi 710072 PR China Faculty of Chemistry Warsaw University of Technology Noakowskiego 3 00-664 Warsaw Poland Research & Development Institute of Northwestern Polytechnical University in Shenzhen Shenzhen 518057 PR China School of Electronics and Information Northwestern Polytechnical University Xi'an Shaanxi 710072 PR China Institute of High Pressure Physics of the Polish Academy of Sciences Ul. Sokolowska 29/37 01-142 Warsaw Poland

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Design and upgrade of mesoporous perovskite solar cells

Chemistry of Inorganic Materials

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Chemistry of Inorganic materials 2024年 3卷

作者： Yue Ming Youwei Jiang Jinghao Li Jie Huang Peng Xiang Cheng Qiu Yaoguang Rong Electronic and Communication Engineering Shenzhen Polytechnic University Shenzhen 518055 Guangdong PR China School of Chemistry Chemical Engineering and Life Sciences State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 Hubei PR China International School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 Hubei PR China School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 Hubei PR China Solar Energy High Value Utilization and Green Conversion Hubei Provincial Engineering Research Center College of Electrical Engineering & New Energy China Three Gorges University Yichang 443002 Hubei PR China Hebei Provincial Collaborative Innovation Center of Transportation Power Grid Intelligent Integration Technology and Equipment School of Electrical and Electronic Engineering Shijiazhuang Tiedao University 050043 Shijiazhuang PR China

In recent years, there has been notable progress in the development of perovskite solar cells (PSCs), marked by significant advancements in efficiency, stability, and scalability. Among different device architectures and technical routes, mesoporous perovskite solar cells (MPSCs) based on TiO 2 /ZrO 2 /carbon scaffold and screen-printing fabrication process have shown unique advantages for mass production and commercialization due to the low material cost and scalable fabrication process. Through efforts on material optimization, interface engineering, and device design, the power conversion efficiency of MPSCs has steadily increased from the initial 6.64 % in 2013 to current 22.22 %. Attributing to the screen-printing-based fabrication process, printable mesoscopic PSCs have enabled large-area devices, from mini-modules to modules, and solar panels. In this review, we discuss the development and latest advances of MPSCs, and provide outlooks for further improving the performance of this promising photovoltaic technology.

关键词： Mesoporous perovskite solar cells Printable Mesoscopic structure Stability Upscaling

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Sunlight‐Driven Water Transport via a Reconfigurable Pump

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Angewandte Chemie 2018年第47期130卷

作者： Hongya Geng Ke Zhou Jiajia Zhou Hongyun Ma Cunjing Lv Chun Li Zhiping Xu Liangti Qu Department of Chemistry MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology Tsinghua University Beijing 100084 P. R. China Applied Mechanics Laboratory Department of Engineering Mechanics and Center for Nano and Micro Mechanics Tsinghua University Beijing 100084 P. R. China Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education School of Chemistry Beihang University Beijing 100191 P. R. China Centre of Soft Matter Physics and Its Applications Beihang University Beijing 100191 P. R. China Key Laboratory for Advanced Materials Processing Technology Ministry of Education of China State Key Laboratory of Tribology Department of Mechanical Engineering Tsinghua University Beijing 100084 P. R. China

Fast and controllable water transport in microchannels has implications for many applications. A combination of stimuli‐responsive asymmetrical changes in the geometry and gradient in the surface wettability offers the possibility to accelerate the transport and realize controllability. Herein, we introduce a meters‐long sunlight‐powered reconfigurable water pump constructed by tubular poly(dimethylsiloxane) (PDMS) premixed with chemically reduced graphene oxide (rGO), in which the inner wall is modified with thermal‐sensitive poly(N‐isopropylacrylamide) hydrogel (PNIPAm). This sunlight‐powered water pump delivers a record‐high advance speed of 1.5 mm s −1 and 13.6 kg h −1 m −2 under 1.5 sun. Theoretical and experimental results reveal that the remarkable performance results from the synergistic effect of the contact‐angle gradient arising from the reversible hydrophilic/hydrophobic switch of PNIPAm and the capillary force arising from the geometric deformation of the microchannel.

关键词： Mikrokanäle Graphenoxid N-Isopropylacrylamid Sonnenlicht Wassertransport

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Solid Electrolytes: A New Lithium‐Ion Conductor LiTaSiO5: Theoretical Prediction, materials synthesis, and Ionic Conductivity (Adv. Funct. Mater. 37/2019)

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advanced Functional materials 2019年第37期29卷

作者： Qi Wang Jian‐Fang Wu Ziheng Lu Francesco Ciucci Wei Kong Pang Xin Guo State Key Laboratory of Material Processing and Die & Mould Technology Laboratory of Solid State Ionics School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan 430074 P. R. China School of Optical and Electronic Information Huazhong University of Science and Technology Wuhan 430074 P. R. China Department of Mechanical and Aerospace Engineering The Hong Kong University of Science and Technology Clear Water Bay Hong Kong P. R. China Center for Information Photonics and Energy Materials Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Shenzhen 518055 P. R. China Department of Chemical and Biological Engineering The Hong Kong University of Science and Technology Clear Water Bay Hong Kong P. R. China Institute for Superconducting & Electronic Materials University of Wollongong Wollongong New South Wales 2522 Australia

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

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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

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A Dual‐Surface Amidoximated Halloysite Nanotube for High‐Efficiency Economical Uranium Extraction from Seawater

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Angewandte Chemie 2019年第42期131卷

作者： Shilei Zhao Yihui Yuan Qiuhan Yu Biye Niu Jianhe Liao Zhanhu Guo Ning Wang State Key Laboratory of Marine Resource Utilization in South China Sea Hainan University Haikou 570228 P. R. China College of Materials Science and Engineering Hainan University Haikou 570228 P. R. China Integrated Composites Laboratory (ICL) Department of Chemical & Biomolecular Engineering University of Tennessee Knoxville TN 37996 USA National Engineering Research Center for Advanced Polymer Processing Technology Zhengzhou University Zhengzhou 450001 P. R. China

By chemical cross‐linking the amidoxime group onto dual‐surfaces of natural ore materials, namely halloysite nanotubes (HNTs), an efficient adsorbent, AO‐HNTs, is developed. AO‐HNTs show high uranium adsorption capacity of 456.24 mg g −1 in 32 ppm uranium‐spiked simulated seawater. In natural seawater, AO‐HNTs reach the high uranium extraction capacity of 9.01 mg g −1 after 30 days’ field test. The dual‐surface amidoximated hollow nanotubular AO‐HNTs exhibit more coordination active sites for uranium adsorption, which is attributed to the high and fast uranium adsorption capacity. Because of the stable natural ore structure, AO‐HNTs also show long service life. Benefiting from the low cost of HNTs, the cost for uranium extraction from seawater is close to the uranium price in the spot uranium market, suggesting that AO‐HNTs could be used for economical extraction of uranium from the oceans.

关键词： Amidoxim Halloysit Meerwasser Nanoröhren Uran

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Multi-stage Transformations of a Cluster-Based Metal-Organic Framework: Perturbing Crystals to Glass-Forming Liquids that Re-Crystallize at High Temperature

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Angewandte Chemie 2023年第29期135卷

作者： Ming-Zhu Chen Jian Li Sheng Liao Yi-Hang Guo Tao Liu Rui-Fang Ma Tian-Yi Xie Wei-Dong Liu Dr. Si-Xu Peng Prof. Dr. Xiaojun Kuang Dr. Zheng Yin Dr. Yingbo Zhao Prof. Dr. Ming-Hua Zeng School of Chemistry and Pharmaceutical Sciences State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources Guangxi Normal University Guilin 541004 P. R. China Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules College of Chemistry and Chemical Engineering Hubei University Wuhan 430062 P. R. China Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Function Materia College of Chemistry and Bioengineering Guilin University of Technology Guilin 541004 P. R. China College of Chemistry and Chemical Engineering Shaanxi University of Science and Technology Xi'an 710021 P. R. China School of Physical Science and Technology Shanghai Key Laboratory of High-resolution Electron Microscopy ShanghaiTech University Shanghai 201210 P. R. China

Glassy and liquid state metal–organic frameworks (MOFs) are emerging type of materials subjected to intense research for their rich physical and chemical properties. In this report, we obtained the first glassy MOF that involves metal-carboxylate cluster building units via multi-stage structural transformations. This MOF is composed of linear [Mn 3 (COO) 6 ] node and flexible pyridyl-ethenylbenzoic linker. The crystalline MOF was first perturbed by vapor hydration and thermal dehydration to give an amorphous state, which can go through a glass transition at 505 K into a super-cooled liquid. The super-cooled liquid state is stable through a wide temperature range of 40 K and has the largest fragility index of 105, giving a broad processing window. Remarkably, the super-cooled liquid can not only be quenched into glass, but also recrystallize into the initial MOF when heated to a higher temperature above 558 K. The mechanism of the multi-stage structural transformations was studied by systematic characterizations of in situ X-ray diffraction, calorimetry, rheological, spectroscopic and pair-distribution function analysis. These multi-stage transformations not only represent a rare example of high temperature coordinative recognition and self-assembly, but also provide new MOF processing strategy through crystal-amorphous-liquid-crystal transformations.

关键词： Cluster-Based MOF Glass-Forming Liquid Recrystallization Sequential Perturbation Structural Transformation

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Structural Modulation of Nanographenes Enabled by Defects, Size and Doping for Oxygen Reduction Reaction

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Angewandte Chemie 2024年第2期137卷

作者： Dr. Bin Wu Dr. Haibing Meng Xingbao Chen Ying Guo Li Jiang Xiaofeng Shi Dr. Jiexin Zhu Juncai Long Wenliang Gao Feng Zeng Dr. Wen-Jie Jiang Yongfa Zhu Dingsheng Wang Prof. Liqiang Mai Helmholtz-Zentrum Berlin für Materialien und Energie GmbH Albert-Einstein-Straße 15 12489 Berlin Germany Present address School of Materials Science and Engineering Nanyang Technological University 50 Nanyang Avenue 639798 Singapore Singapore Institute of Physics Humboldt University Berlin Newton-Straße 15 12489 Berlin Germany These authors contributed equally to this work College of Chemistry and Chemical Engineering Taiyuan University of Technology 030024 Taiyuan State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and Engineering Wuhan University of Technology Luoshi Road 122 430070 Wuhan China CAS Key Laboratory of Molecular Nanostructure and Nanotechnology CAS Research/Education Center for Excellence in Molecular Sciences Institute of Chemistry Chinese Academy of Sciences (CAS) 100190 Beijing China School of Environment and Safety Engineering North University of China 030051 Taiyuan China College of Chemistry and Chemical Engineering Chongqing University Chongqing 400044 China State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University 211816 Nanjing China Department of Chemical Engineering The University of Melbourne 3010 Melbourne Victoria Department of Chemistry Tsinghua University 100084 Beijing China

Nanographenes are among the fastest-growing materials used for the oxygen reduction reaction (ORR) thanks to their low cost, environmental friendliness, excellent electrical conductivity, and scalable synthesis. The perspective of replacing precious metal-based electrocatalysts with functionalized graphene is highly desirable for reducing costs in energy conversion and storage systems. Generally, the enhanced ORR activity of the nanographenes is typically deemed to originate from the heteroatom doping effect, size effect, defects effect, and/or their synergistic effect. All these factors can efficiently modify the charge distribution on the sp 2 -conjugated carbon framework, bringing about optimized intermediate adsorption and accelerated electron transfer steps during ORR. In this review, the fundamental chemical and physical properties of nanographenes are first discussed about ORR applications. Afterward, the role of doping, size, defects, and their combined influence in boosting nanographenes’ ORR performance is introduced. Finally, significant challenges and essential perspectives of nanographenes as advanced ORR electrocatalysts are highlighted.

关键词： Dopants Size Defects Graphene ORR

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