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Binder-and conductive additive-free Ga2O3 nanowires as a self-healing anode for lithium storage

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Progress in Natural Science:Materials International 2023年第2期33卷 203-210页

作者： Yang Gao Bin Wang cas key laboratory of nanosystem and Hierarchical fabrication CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology

High-capacity anode materials have stimulated much attention to developing high-performance lithium-ion batteries. However, high-capacity anode materials commonly suffer from the pulverization matter that greatly hinders their practical applications, especially in terms of the high proportion of active materials. In this work, a Ga2O3nanowire electrode is synthesized by thermal evaporation and immediately used as an anode without the aid of binders and conductive additives. The 3D interconnected architecture of the Ga2O3nanowire electrode shortens lithium diffusion lengths and expedites reaction kinetics. The Ga2O3nanowires exhibit high elasticity and a self-healing ability which is inherited from metallic Ga formed during the electrochemical transition process, thus circumventing the formidable pulverization issue to a certain extent. Benefiting from the unique structural, mechanical, and chemical attributes, the as-grown Ga2O3nanowire electrode gives a high initial lithiation capacity of 1462 m Ah g-1under a current density of 0.1 A g-1. It delivers good cyclic stability with a reversible capacity of 445 m Ah g-1after 200 cycles at 0.5 A g-1. Furthermore, the investigation of lithium storage behaviors indicates the high rate capability of Ga2O3nanowires. This paper contributes to understanding binderand conductive additive-free electrodes consisting of high-capacity active materials from various viewpoints.

关键词： Lithium-ion battery Gallium oxide Nanowires Binder-free Mechanical testing

Naphthodithiophene-based donor materials for solution processed organic solar cells

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Chinese Chemical Letters 2016年第8期27卷 1271-1276,1468页

作者： Xiang-Wei Zhu Kun Lu Huan Li Rui-Min Zhou Zhi-Xiang Wei cas key laboratory of nanosystem and Hierarchical fabrication CAS Center for Excellence in NanoscienceNational Center for Nanoscience and Technology

As an emerging donor building block,naphthodithiophene（NDT） is causing more concerns in the field of organic *** the rigid and coplanar molecule structure,NDT will exhibit more application space relying on its own advantage for facilitating the charge carrier *** this review article,we have summarized the development progress on the NDT-based donor materials for solution processed organic solar *** and comments on those representative NDT type materials about structure and property are also presented.

关键词： Naphthodithiophene Donor Acceptor Organic solar cells Power conversion efficiency

Thiophene-based conjugated microporous polymers:synthesis,characterization and efficient gas storage

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Science China Chemistry 2017年第8期60卷 1067-1074页

作者： Chao-Jing Sun Xue-Qian Zhao Peng-Fei Wang Hua Wang Bao-Hang Han cas key laboratory of nanosystem and Hierarchical fabrication CAS Center for Excellence in Nanoscience National Center for Nanoseience and Technology Beijing 100190 China

A series of thiophene-based conjugated microporous polymers （ThPOPs） have been synthesized on the basis of ferric chloride-catalyzed oxidative coupling polymerization of muRi-thienyl monomers. The structures of ThPOPs were confirmed via solid-state t3C CP/MAS NMR spectroscopy and Fourier-transform infrared spectroscopy. The ThPOPs possess high porosities and their high Brunauer-Emmett-Teller specific surface area results vary between 350 and 1320mZg . The presence of abundant ultra-micronores at 0.50-0.63 nm allows ThPOPs efficient gas （carbon dioxide, methane, and hydrogen） adsorption.

关键词： conjugated porous organic polymers thiophene gas adsorption oxidative polymerization

Coordination-responsive drug release inside gold nanorod @ metal-organic framework core-shell nanostructures for near-infrared-induced synergistic chemo-photothermal therapy

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Nano Research 2018年第6期11卷 3294-3305页

作者： Yantao Li Jun Jin Dawei Wang Jiawei Lv Ke Hou Yaling Liu Chunying Chen Zhiyong Tang cas key laboratory of nanosystem and Hierarchical fabrication CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology Beijing 100190 China

Multifunctional core-shell nanostructures formed by integration of distinct components have received wide attention as promising biological platforms in recent years. In this work, crystalline zeolitic imidazolate framework-8 （ZIF-8）, a typical metal-organic framework （MOF）, is coated onto single gold nanorod （AuNR） core for successful realization of synergistic photothermal and chemotherapy triggered by near-infrared （NIR） light. Impressivel）~ high doxorubicin hydrochloride （DOX） loading capacity followed by pH and NIR light dual stimuli-responsive DOX release can be easily implemented through formation and breakage of coordination bonds in the system. Moreover, under NIR laser irradiation at 808 nm, these novel AuNR@MOF core-shell nanostructures exhibit effective synergistic chemo-photothermal therapy both in vitro and in vivo, confirmed by cell treatment and tumor ablation via intravenous injection.

关键词： core-shell nanostructures coordination bonds dual stimuli response synergistic cancer therapy

Non-noble metal anode based dual-ion batteries： promising high-energy and low-cost energy storage devices

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Science China Materials 2017年第4期60卷 368-370页

作者： Zhiyong Tang cas key laboratory of nanosystem and Hierarchical fabrication CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology Beijing 100190 China

Lithium-ion batteries(LIBs),as one of the most commonly used electrochemical energy storage devices,have dominated todays markets for portable electronics and electric vehicles[1].Llowever,their energy density cannot yet satisfy the increasing requirement,so it is imperative for developing next-generation batteries with high energy density together with long cycling life and good *** recent years,a novel type of battery called as

关键词：科学研究材料学工程材料中国

Controlled synthesis of one-dimensional segmented heteronanostructures

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Science China Materials 2024年第8期67卷 2715-2716页

作者： Zhiyong Tang cas key laboratory of nanosystem and Hierarchical fabrication CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing 100190China

Telluride materials possess distinctive advantages,including the high theoretical volume capacity and electrical conductivity,rendering them promising candidates for a range of energy storage and optoelectronic applications[1].Heterogeneous compositions and interfaces in heteronanostructures have significant implications on the electron transport,magnetic coupling,and phonon scattering,thereby promoting the performances in photocatalysis,and thermoelectrics[2].

关键词： synthesis rendering thereby

Recent Progress on Organic Near-Infrared Photodetectors:Mechanism,Devices,and Applications

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Chinese Journal of Chemistry 2023年第8期41卷 958-978页

作者： Qingkai Wang Yajie Zhang Zhixiang Wei cas key laboratory of nanosystem and Hierarchical fabrication CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing100190 China

Comprehensive Summary Near infrared light organic photodetectors have attracted tremendous attention due to their tailorable response,ease of processing,compatibility with flexible substrate,room temperature operation and broad applications such as remote sensing,health monitoring,artificial vision,night vision,and so ***,the great improvement obtained on the important figures of merit performances has made organic photodetectors catch up and even surpass those of inorganic photodetectors in some *** this review,after a brief illustration of the organic photodetectors'figures of merit performances,we summarize the research progress of panchromatic and narrowband near infrared light organic photodetectors from their working mechanism,strategies to achieve narrowband near infrared light organic photodetectors,to some practical ***,we discuss the development challenge of the near infrared light organic photodetectors.

关键词： Organic photodetectors Near-infrared Panchromatic Narrowband Applications

Observation of Van Hove Singularities and Temperature Dependence of Electrical Characteristics in Suspended Carbon Nanotube Schottky Barrier Transistors

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Nano-Micro Letters 2018年第2期10卷 75-80页

作者： Jian Zhang Siyu Liu Jean Pierre Nshimiyimana Ya Deng Xiao Hu Xiannian Chi Pei Wu Jia Liu Weiguo Chu Lianfeng Sun cas key laboratory of nanosystem and Hierarchical fabrication CAS Center for Excellence in NanoscienceNational Center for Nanoscience and Technology University of Chinese Academy of Sciences

A Van Hove singularity(VHS) is a singularity in the phonon or electronic density of states of a crystalline solid. When the Fermi energy is close to the VHS, instabilities will occur, which can give rise to new phases of matter with desirable properties. However, the position of the VHS in the band structure cannot be changed in most materials. In this work, we demonstrate that the carrier densities required to approach the VHS are reached by gating in a suspended carbon nanotube Schottky barrier transistor. Critical saddle points were observed in regions of both positive and negative gate voltage, and the conductance flattened out when the gate voltage exceeded the critical value. These novel physical phenomena were evident when the temperature is below 100 K. Further, the temperature dependence of the electrical characteristics was also investigated in this type of Schottky barrier transistor.

关键词： Carbon nanotube Van Hove singularities Schottky barrier transistors

Thermostable single-junction organic solar cells with a power conversion efficiency of 14.62%

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Science Bulletin 2018年第6期63卷 340-342页

作者： Hui Li Zuo Xiao Liming Ding Jizheng Wang Beijing National laboratory for Molecular Sciences CAS Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Center for Excellence in Nanoscience (cas) Key Laboratory of Nanosystem and Hierarchical Fabrication (CAS) National Center for Nanoscience and Technology

Organic solar cells(OSCs)have drawn substantial attention in recent two decades due to their features of solution processability,low cost,and light weight[1].The active layer of OSCs is usually composed of an electron donor(D)and an electron acceptor(A).The D/A system can form interpenetrated nanoscale network,which allows efficient exciton dissociation and hence charge carrier ***,the efficiency of such binary OSCs is gen-

关键词：太阳能电池变换效率器官连接材料发展低费用振荡轻重量