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Mixed Matrix Membrane with Penetrating Subnanochannels: A Versatile Nanofluidic Platform for Selective Metal Ion Conduction

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Angewandte Chemie 2022年第2期135卷

作者： Chen Li Prof. Yanan Jiang Zihan Wu Youcai Zhang Cheng Huang Sha Cheng Prof. Ya You Prof. Pengchao Zhang Prof. Wen Chen Prof. Lanqun Mao Prof. Lei Jiang 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 College of Chemistry Beijing Normal University Beijing 100875 P. R. China Sanya Science and Education Innovation Park Wuhan University of Technology Sanya 572024 P. R. China Hubei Longzhong Laboratory Xiangyang 441000 P. R. China CAS Key Laboratory of Bio-inspired Materials and Interfacial Science Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China

Biological ion channels penetrated through cell membrane form unique transport pathways for selective ionic conductance. Replicating the success of ion selectivity with mixed matrix membranes (MMMs) will enable new separation technologies but remains challenging. Herein, we report a soft substrate-assisted solution casting method to develop MMMs with penetrating subnanochannels for selective metal ion conduction. The MMMs are composed of penetrating Prussian white (PW) microcubes with subnanochannels in dense polyimide (PI) matrices, achieving selective monovalent metal ion conduction. The ion selectivity of K + /Mg 2+ is up to 14.0, and the ion conductance of K + can reach 45.5 μS with the testing diameter of 5 mm, which can be further improved by increasing the testing area. Given the diversity of nanoporous materials and polymer matrices, we expect that the MMMs with penetrating subnanochannels could be developed into a versatile nanofluidic platform for various emerging applications.

关键词： Ion Conduction Ion Selectivity Mixed Matrix Membrane PW Microcubes

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Comprehensive H2O Molecules Regulation via Deep Eutectic Solvents for Ultra-Stable Zinc Metal Anode

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Angewandte Chemie 2022年第8期135卷

作者： Ming Li Dr. Xuanpeng Wang Jisong Hu Jiexin Zhu Prof. Chaojiang Niu Dr. Huazhang Zhang Cong Li Buke Wu Prof. Chunhua Han Prof. Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Hubei Wuhan 430070 China Department of Physical Science & Technology School of Science Wuhan University of Technology Wuhan 430070 China Hubei Longzhong Laboratory Xiangyang Hubei 441000 China School of Optical and Electronic Information Huazhong University of Science and Technology Wuhan 430074 China School of Materials Science and Engineering Zhengzhou University Zhengzhou 450001 China Department of Mechanical and Energy Engineering Southern University of Science and Technology Shenzhen 518055 China Contribution: Conceptualization (lead) Funding acquisition (lead) Writing - original draft (equal) Writing - review & editing (equal)

The corrosion, parasitic reactions, and aggravated dendrite growth severely restrict development of aqueous Zn metal batteries. Here, we report a novel strategy to break the hydrogen bond network between water molecules and construct the Zn(TFSI) 2 -sulfolane-H 2 O deep eutectic solvents. This strategy cuts off the transfer of protons/hydroxides and inhibits the activity of H 2 O, as reflected in a much lower freezing point (<−80 °C), a significantly larger electrochemical stable window (>3 V), and suppressed evaporative water from electrolytes. Stable Zn plating/stripping for over 9600 h was obtained. Based on experimental characterizations and theoretical simulations, it has been proved that sulfolane can effectively regulate solvation shell and simultaneously build the multifunctional Zn-electrolyte interface. Moreover, the multi-layer homemade modular cell and 1.32 Ah pouch cell further confirm its prospect for practical application.

关键词： Aqueous Zn Metal Batteries Deep Eutectic Solvents H2O Molecules Regulation Hydrogen Bond Reconfiguration Solvation Shell

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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 scalab.e 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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In Situ X-ray Absorption Spectroscopy of Metal/Nitrogen-doped Carbons in Oxygen Electrocatalysis

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Angewandte Chemie 2023年第27期135卷

作者： Bin Wu Tianxiao Sun Ya You Haibing Meng Dulce M. Morales Mailis Lounasvuori Abbas Beheshti Askari Li Jiang Feng Zeng Baoshan Hu Xiangzhi Zhang Renzhong Tai Zhichuan J. Xu Tristan Petit Liqiang Mai Helmholtz-Zentrum Berlin für Materialien und Energie GmbH Albert-Einstein-Straße 15 12489 Berlin Germany Institute of Physics Humboldt University Berlin Newton-Straße 15 12489 Berlin Germany State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and Engineering Wuhan University of Technology Luoshi Road 122 Wuhan 430070 China College of Chemistry Taiyuan University of Technology Taiyuan 030024 China Chemical Engineering group Engineering and Technology institute Groningen (ENTEG) Faculty of Science and Engineering University of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands 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) Beijing 100190 China State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University Nanjing 211816 China College of Chemistry and Chemical Engineering Chongqing University Chongqing 401331 (China) Shanghai Synchrotron Radiation Facility Shanghai Advanced Research Institute Chinese Academy of Sciences Shanghai 201204 China School of Materials Science and Engineering Nanyang Technological University 50 Nanyang Avenue Singapore 639798 Singapore

Metal/nitrogen-doped carbons (M−N−C) are promising candidates as oxygen electrocatalysts due to their low cost, tunable catalytic activity and selectivity, and well-dispersed morphologies. To improve the electrocatalytic performance of such systems, it is critical to gain a detailed understanding of their structure and properties through advanced characterization. In situ X-ray absorption spectroscopy (XAS) serves as a powerful tool to probe both the active sites and structural evolution of catalytic materials under reaction conditions. In this review, we firstly provide an overview of the fundamental concepts of XAS and then comprehensively review the setup and application of in situ XAS, introducing electrochemical XAS cells, experimental methods, as well as primary functions on catalytic applications. The active sites and the structural evolution of M−N−C catalysts caused by the interplay with electric fields, electrolytes and reactants/intermediates during the oxygen evolution reaction and the oxygen reduction reaction are subsequently discussed in detail. Finally, major challenges and future opportunities in this exciting field are highlighted.

关键词： Active Sites In Situ XAS M−N−C Catalysts Oxygen Electrocatalysis Structural Evolution

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Metal cyclotetraphosphates as a new acid-stable electrocatalyst for efficient hydrogen evolution reaction

Metal cyclotetraphosphates as a new acid-stable electrocatal...

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中国化学会第三届中国能源材料化学研讨会

作者： Xiong Liu Qi Li Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology

Hydrogen evolution reaction（HER） is considered as an effective strategy to produce pure hydrogen,which is an ideal energy carrier for the future energy *** recent years,the unrelenting research has been focused on t... 详细信息

关键词： Metal cyclotetraphosphates as a new acid-stable electrocatalyst for efficient hydrogen evolution reaction

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Roomerature large photoinduced magnetoresistance in semi-insulating gallium arsenide-based device

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Chinese Physics B 2018年第6期27卷

作者： He, Xiong Sun, Zhi-Gang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China

It is still a great challenge for semiconductor based-devices to obtain a large magnetoresistance (MR) effect under a low magnetic field at room temperature. In this paper, the photoinduced MR effects under different intensities of illumination at room temperature are investigated in a semi-insulating gallium arsenide (SI-GaAs)-based Ag/SI-GaAs/Ag device. The device is subjected to the irradiation of light which is supplied by light-emitting diode (LED) lamp beads with a wavelength in a range of about 395 nm-405 nm and the working power of each LED lamp bead is about 33 mW. The photoinduced MR shows no saturation under magnetic fields (B) up to 1 T and the MR sensitivity S (S = MR/B) at low magnetic field (B = 0.001 T) can reach 15 T-1. It is found that the recombination of photoinduced electron and hole results in a positive photoinduced MR effect. This work implies that a high photoinduced S under a low magnetic field may be obtained in a non-magnetic semiconductor device with a very low intrinsic carrier concentration. © 2018 Chinese Physical Society and IOP Publishing Ltd.

关键词： Magnetoresistance

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Pomegranate-Inspired Structures Constructed by Monodisperse Microporous Carbon Spheres for High-Volumetric-Capacitance Supercapacitor

Pomegranate-Inspired Structures Constructed by Monodisperse ...

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中国化学会第三届中国能源材料化学研讨会

作者： Shihao Feng Zhenhui Liu Qiang Yu Zechao Zhuang Kwadwo Asare Owusu Qiang Chen Zilan Li Shida Fu Liang Zhou Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology

Carbonaceous materials,especially microporous carbon,have aroused great interests in the R&D(research and development) of supercapacitor due to the low specific weight and large surface ***,the rich porosity usually is in conflict with high stack density,resulting in carbon materials with good specific capacitance but low volumetric capacitance.

关键词： Pomegranate-Inspired Structures Constructed by Monodisperse Microporous Carbon Spheres for High-Volumetric-Capacitance Supercapacitor

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Tailoring Porous Carbon materials for Supercapacitors

Tailoring Porous Carbon Materials for Supercapacitors

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第五届全国储能科学与技术大会

作者： Liang Zhou State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology

＜正＞Porous carbon materials are ideal supercapacitor electrode materials due to their excellent electric conductivity,high surface area,tunable pore size,high chemical stability,and low *** phenolic resin as the precursor,we designed a series of porous carbon materials,such as microporous carbon spheres,pomegranate-like carbon spheres,yolk@shell structures,ultrafine

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An Ultrastable and High-Performance Zn/VO2 Battery Based on a Reversible Single-Phase Reaction

An Ultrastable and High-Performance Zn/VO2 Battery Based on ...

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第五届全国储能科学与技术大会

作者： Lineng Chen Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology

The aqueous zinc ion batteries（ZIBs）combining with inexpensive zinc anode and nontoxic aqueous electrolyte are highly desirable for large-scale energy ***,their applications are hindered by the limited performance of cathode materials,which often deliver a poor rate capability and inferior cycle ***,The V02 nanorods show significantly electrochemical performance when used as intercalation cathode for aqueous ***,the V02 nanorods display high initial capacity of 325.6 mAh g-1 at 0.05 A g-1,good rate capability and excellent cycling stability with the capacity retention of 86% over 5000 cycles at 3.0 A ***,the V02 unit cell expands sequentially in a,b,and c directions during discharge and reversibly contracts back during charge,the zinc storage mechanism is revealed to be a highly reversible single-phase reaction by operando techniques and corresponding qualitative *** work not only opens a new door to the practical application of V02 in ZIB systems,but also broadens the horizon in understanding the electrochemical behavior of rechargeable ZIBs.

关键词： aqueous zinc ion battery vanadium dioxide cycling stability single-phase reaction

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Silicon Oxides:A Promising Family of High-Capacity Anode materials

Silicon Oxides:A Promising Family of High-Capacity Anode Mat...

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中国化学会第三届中国能源材料化学研讨会

作者： Liang Zhou Zhenhui Liu Qiang Yu Ruohan Yu Chunjuan Tang Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology

With high theoretical capacity,natural abundance,and low cost,silicon oxides have emerged as a promising family of anode materials for next-generation lithium-ion batteries(LIBs).However,their widespread application h... 详细信息

关键词： Silicon Oxides:A Promising Family of High-Capacity Anode materials

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