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SSRN 2024年

作者： Naseem, Muhammad Kashif Azmat, Mian Abbas, Sadia Ismail, Muhammad Jin, Mingwei Hajra, Hajra Shoaib, Saba Ali, Asif Khalid, Syed Zhu, Youqi Cao, Chuanbao Zou, Meishuai Research Center of Materials Science Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications Beijing Institute of Technology Beijing100081 China

Vanadium tetra Sulfide (VS4) is facing sluggish diffusion kinetics caused by divalent Magnesium (Mg2+) ion, despite having an ideal two-dimensional layer structured cathodic material for rechargeable magnesium battery system. To address this problem, WO3-VS4 core-shell structures with percolation network presented, aiming to facilitate Mg2+ ions diffusion to achieve higher performances and improved discharge voltage along with maintaining the structural integrity of cathodic material during cycling. WO3 backed VS4 exhibited interfacial stability due to charge accumulation at interface causing expanded layers of VS4, facilitated the insertion of Mg2+ ions, improved charge transferability and conductivity, hence enabled higher specific capacity and rate performance. Calculated formation energies justified the stability of this cathodic structure, therefore demonstrated up to 75.97% diffusion contribution. Bandgap measurements, Density of states analysis and energy bands calculations at interface reinforced this claim by clarifying the charge transfer phenomenon. Compared with pristine VS4 at 1.57V, the highest discharge voltage of WO3-VS4 appeared at 1.98V and exhibited up to 633.5 mAhg-1 capacitance at 100 mAg-1 current density because of schematic compatibility, interfacial stability and limiting side reactions in RMBS. The interface of WO3-VS4 at copper current collector exhibited extraordinary performances as the step forward to resolve long-standing obstacle of sluggish kinetics. © 2024, The Authors. All rights reserved.

关键词： Shells (structures)

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Ultrafine Fe/Fe3C decorated on Fe-N_(x)-C as bifunctional oxygen electrocatalysts for efficient Zn-air batteries

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Journal of Energy Chemistry 2021年第5期30卷 72-79页

作者： Lingbo Zong Xin Chen Siliang Liu Kaicai Fan Shuming Dou Jie Xu Xiaoxian Zhao Wenjun Zhang Yaowen Zhang Weicui Wu Fenghong Lu Lixiu Cui Xiaofei Jia Qi Zhang Yu Yang Jian Zhao Xia Li Yida Deng Yanan Chen Lei Wang Taishan Scholar Advantage and Characteristic Discipline Team of Eco Chemical Process and Technology Key Laboratory of Optic-electric Sensing and Analytical Chemistry fo r Life ScienceMOEState Key Laboratory of Eco-chemical EngineeringCollege of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266042ShandongChina School of Materials Science and Engineering Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of EducationTianjin Key Laboratory of Composite and Functional MaterialsTianjin UniversityTianjin 300072China Centre for Clean Environment and Energy School of Environment and ScienceGriffith UniversityQueensland 4222Australia College of Science Hebei Agricultural UniversityBaoding 071001HebeiChina Key Laboratory of Rubber-Plastics Ministry of Education/Shandong Provincial Key Laboratory of Rubber-PlasticsQingdao University of Science and TechnologyQingdao 266042ShandongChina College of Materials Science and Engineering Qingdao University of Science&TechnologyQingdao 266042ShandongChina

Efficient bifunctional oxygen electrocatalysts for ORR and OER are fundamental to the development of high performance metal-air ***,a facile cost-efficient two-step pyrolysis strategy for the fabrication of a bifunctional oxygen electrocatalyst has been *** efficient non-preciousmetal-based electrocatalyst,Fe/Fe_(3)C@Fe-N_(x)-C consists of highly curved onion-like carbon shells that encapsulate Fe/Fe_(3)C nanoparticles,distributed on an extensively porous graphitic carbon *** obtained Fe/Fe_(3)C@Fe-N_(x)-C aerogel exhibited superb electrochemical activity,excellent durability,and high methanol *** experimental results indicated that the assembly of onion-like carbon shells with encapsulated Fe/Fe_(3)C yielded highly curved carbon surfaces with abundant Fe-Nxactive sites,a porous structure,and enhanced electrocatalytic activity towards ORR and OER,hence displaying promising potential for application as an air cathode in rechargeable Zn-air *** constructed Zn-air battery possessed an exceptional peak power density of~147 mW cm^(-2),outstanding cycling stability(200 cycles,1 h per cycle),and a small voltage gap of 0.87 *** study offers valuable insights regarding the construction of low-cost and highly active bifunctional oxygen electrocatalysts for efficient air batteries.

关键词： Non-precious metal Nitrogen-rich carbon Fe/Fe_(3)C Fe-N_(x)-C Bifunctional oxygen electrocatalysts

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Zinc Stannate Nanostructures for Energy Conversion

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Chinese Journal of Chemistry 2021年第2期39卷 367-380页

作者： Jie Dou Qi Chen Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications Experimental Center of Advanced MaterialsSchool of Materials Science&EngineeringBeijing Institute of TechnologyBeijing100081 China Beijing Institute of Technology Chongqing Innovation Center Chongqing 4004100Beijing100081 China

To date,ternary metal oxide semiconductor materials have attracted extensive attention worldwide due to their unique optoelectronic *** a classical ternary oxide,Zn2SnO4 is featured with the high electron mobility,wide band gap,negligible visible light absorption and tailorable electronic band ***,it is an ideal material for practical use in solar cells,lithium batteries,sensors,and *** this review,we summarize the recent research progress of this material with the focus on the synthesis methods,nanostructures,and the resulting effects on the crystal structure,optical properties,and photoelectrochemical ***,their potential applications in different devices are highlighted and carefully discussed.

关键词： Zinc stannate Synthesis design Nanostructures Applications Energy conversion

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“Three‐in‐one”strategy:Heat regulation and conversion enhancement of a multifunctional separator for safer lithium-sulfur batteries

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Carbon Energy 2023年第11期5卷 54-67页

作者： Kaiping Zhu Luhe Li Pan Xue Jun Pu Liyun Wu Gengde Guo Ran Wang Ye Zhang Huisheng Peng Guo Hong Qiang Zhang Yagang Yao National Laboratory of Solid State Microstructures College of Engineering and Applied SciencesJiangsu Key Laboratory of Artificial Functional MaterialsCollaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjingChina Key Laboratory of Functional Molecular Solids Ministry of EducationCollege of Chemistry and Materials ScienceAnhui Normal UniversityWuhuChina State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceLaboratory of Advanced MaterialsFudan UniversityShanghaiChina Department of Materials Science and Engineering College of EngineeringCity University of Hong KongHong KongChina Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijingChina

The safety problems encountered with lithium–sulfur batteries(LSBs)hinder their development for practical ***,a highly thermally conductive separator was constructed by cross‐weaving super‐aligned carbon nanotubes(SA‐C)on super‐aligned boron nitride@carbon nanotubes(SA‐BC)to create a composite film(SA‐BC/SA‐C).This separator was used to fabricate safe LSBs with improved electrochemical *** highly aligned separator structure created a uniform thermal field that could rapidly dissipate heat accumulated during continuous operation due to internal resistance,which prevented the development of extremely high *** array of boron nitride nanosheets endowed the composite separator with a large number of adsorption sites,while the highly graphitized carbon nanotube skeleton accelerated the catalytic conversion of high‐valence polysulfides into low‐valence *** arrayed molecular brush design enabled the regulation of local current density and ion flux,and considerably alleviated the growth of lithium dendrites,thus promoting the smooth deposition of Li ***,a battery constructed with the SA‐BC/SA‐C separator showed a good discharge capacity of 685.2 mAh g−1 over 300 cycles(a capacity decay of 0.026%per cycle)at 2 C and 60°***“three‐in‐one”multifunctional separator design strategy constitutes a new path forward for overcoming the safety problems of LSBs.

关键词： conversion enhancement heat regulation high safety lithium-sulfur batteries multifunctional separator

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On Water Growth of Continuous Thin Films of Two-Dimensional Covalent Organic Frameworks with Large Single-Crystal Domains

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Chinese Journal of Chemistry 2023年第19期41卷 2425-2431页

作者： Zihao Liang Baokun Liang Li Gong Yonghang Yang Fengpiao Deng Xinyu Wang Yuanjun Xia Zhipeng Zhou Xin Dong Jiaxing Lu Wei Liu Zhongke Yuan Haoyuan Qi Zhikun Zheng Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education School of Chemistryand State KeyLaboratory of Optoelectronic Materials and TechnologiesSun Yat-Sen UniversityGuangzhouGuangdong 510275China Central Facility for Electron Microscopy Electron Microscopy Group of Materials ScienceUniversitit Ulm89081UlmGermany Instrumental Analysis and Research Center Sun Yat-Sen UniversityGuangzhouGuangdong 510275China The First School of Clinical Medicine Southern Medical UniversityGuangzhouGuangdong 510515China Department of Orthopedics General Hospital of Southern Theater CommandGuangzhouGuangdong 510010China Jieyang Branch of Chemistry and Chemical Engineering Guangdong Laboratory JieyangGuangdong 515200China Key Laboratory of Low-Carbon Chemistry&Energy Conservation of Guangdong Province Key Laboratory for Polymeric Composite and Functional Materials of Ministry of EducationSchool of Materials Science and Engineeringand State Key Laboratory of Optoelectronic Materials and TechnologiesSun Yat-sen UniversityGuangzhouGuangdong 510275China School of Chemical Engineering and Light Industry Guangdong University pf TechnologyGuangzhouGuangdong 510006China Faculty of Chemistry and Food Chemistry&Center for Advancing Electronics Dresden(cfaed) Technische Universitat Dresden01062DresdenGermany

A core feature of two-dimensional covalent organic frameworks is crystallinity, but it remains challenging to gain their thin films with high crystallinity. Here, we presented growth of thin films of two-dimensional covalent organic frameworks with an average domain size of ~2.83 μm^(2) and maximum domain size of up to ~26.19 μm^(2) using amphiphilic glycine derivatives on water surface. We envisage that this work will inspire the growth of a wide variety of organic two-dimensional materials with high crystallinity and boost their structure property investigations.

关键词： Covalent organic frameworks Thin polymer films Self-assembly Two-dimensional polymers Surfactants

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Stabilizing charge storage of Fe_(2)O_(3)-based electrode via phosphate ion functionalization for long cycling life

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Rare Metals 2023年第1期42卷 39-46页

作者： Li-Ming Wan Qiu-Ying Xia Jiang-Hua Wu Jing Liu Zheng-Yi Shi Si Lan Teng Zhai Serguei V.Savilov Sergey M.Aldoshin Hui Xia Herbert Gleiter Institute of Nanoscience School of Materials Science and EngineeringNanjing University of Science and TechnologyNanjing210094China National Laboratory of Solid State Microstructures Jiangsu Key Laboratory of Artificial Functional MaterialsCollege of Engineering and Applied Sciences and Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing210093China Department of Chemistry M.V.Lomonosov Moscow State UniversityMoscow119991Russian Federation Faculty of Fundamental Physical and Chemical Engineering M.V.Lomonosov Moscow State UniversityMoscow119991Russian Federation

Compositing metal oxides with nanostructured carbon or conductive polymer supports has been regarded as a compelling way to develop electrode materials with enhanced energy density as well as large power in ***,the corresponding cycling stability is still greatly limited due to the intrinsic dissolution of metal oxide nanostructures during redox ***,phosphate ions modified Fe_(2)O_(3) nanoparticles composited with hollow carbon nanosheet arrays have been synthesized as desirable electrodes with both significantly expanded lifespan and high pseudocapacitance.

关键词： electrode expanded charge

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Enhancement in photovoltaic properties of Nd:SnS films prepared by low-cost NSP method

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Rare Metals 2022年第5期41卷 1661-1670页

作者： S.Sebastian I.Kulandaisamy A.M.S.Arulanantham S.Valanarasu A.Kathalingam Mohd.Shkir Salem AlFaify PG&Research Department of Physics Arul Anandar CollegeKarumathurMadurai 625514India Millimeter Wave Innovation Technology Research Center(MINT) Dongguk University-SeoulSeoul 04620Republic of Korea Advanced Functional Materials&Optoelectronics Laboratory(AFMOL) Department of PhysicsFaculty of ScienceKing Khalid UniversityAbha 9004Saudi Arabia

The inner transition metal(ITM) neodymium(Nd)-doped tin sulfide(Nd:SnS) thin films with various Nd concentrations were coated by nebulizer spray pyrolysis(NSP) technique at 350℃. All the coated films were analyzed for their structural, optical and photoelectrical properties. X-ray diffractometer(XRD) study showed(111) direction as the highly preferred orientation with orthorhombic crystal structure for all the films. The intensity of the peaks was found to increase until 5 at% Nd doping and then reduced for higher(7 at% Nd) doping concentration. Atomic force microscopic(AFM) images of the films proclaimed an increase in the surface and line roughness of the films by increasing Nd *** analysis on the films showed a variation in energy gap from 2.05 to 1.69 eV when the doping concentration increased from 0 at% to 7 at%. At 5 at% Nd doping, the photoluminescence(PL) spectra displayed a single strong emission peak at 723.1 nm with enhanced intensity corresponding to near-band-edge emission. All the SnS thin films exhibited p-type behavior with the lowest resistivity of ~ 4.311 Ω·cm and high carrier concentrations of ~ 1.441 × 10^(17)cm^(-3) for 5 at% Nd doping level as observed from Hall effect studies. Furthermore, fluorinedoped tin oxide(FTO)/n-CdS/p-Nd:SnS hetero-junction solar cells were prepared and the current–voltage curve in dark and light condition was obtained for the device. An efficiency of 0.135% was observed for the solar cell fabricated with 5 at% Nd-doped SnS thin film.

关键词： Rare earth doping Neodymium SnS thin films Nebulizer spray Optical studies Solar cells

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Raman spectra evidence for the covalent-like quasi-bonding between exfoliated MoS2 and Au films

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science China(Information sciences) 2021年第4期64卷 157-165页

作者： Xinyu HUANG Lei ZHANG Liwei LIU Yang QIN Qiang FU Qiong WU Rong YANG Jun-Peng LV Zhenhua NI Lei LIU Wei JI Yeliang WANG Xingjiang ZHOU Yuan HUANG Institute of Physics Chinese Academy of Sciences Department of Materials Science and Engineering College of Engineering Peking University College of Materials Science and Engineering Key Laboratory of Advanced Functional MaterialsMinistry of Education of China Beijing University of Technology School of Information and Electronics MIIT Key Laboratory for Low-Dimensional Quantum Structure and DevicesBeijing Institute of Technology School of Science Beijing University of Posts and Telecommunications School of Physics Southeast University Department of Physics and Beijing Key Laboratory of Optoelectronic Functional Materials & Micro-Nano Devices Renmin University of China Songshan Lake Materials Laboratory

Gold-enhanced mechanical exfoliation method attracts broad interests in recent years, which has been widely used for preparing large-area and high-quality 2D single crystals. Even many calculations predict that there is strong interaction between Au film and the exfoliated 2D crystals, direct experimental evidence is still lacking. Here, we perform Raman spectroscopy measurements for few layer MoS2with and without Au film underneath. The main peaks of MoS2on Au film show no obvious change at higher frequency,however, the breathing and shear modes at low-frequency are suppressed, especially for breathing *** contrast, both breathing modes and shear modes can be detected on suspended MoS2and the samples are transferred from Au film to SiO2/Si. These comparison results provide direct evidence for the existence of covalent-like quasi-bonding at the interface of Au film and the exfoliated MoS2crystal. This MoS2/Au interface interaction presents a special pinning-effect for low-frequency rigid vibration. Similar pinning-effect is also discovered in WS2/Au system. Our work reports the suppression of low-frequency Raman modes of MoS2, WS2on Au film, which will deliver new inspiration for studying other interactions between layered materials and solid surfaces.

关键词： MoS$_{2}$ Raman spectroscopy gold-enhanced mechanical exfoliation low-frequency raman modes covalent-like quasi-bonding

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Surface defect engineered-Mg-based implants enable the dual functions of superhydrophobic and synergetic photothermal/chemodynamic therapy

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Bioactive Materials 2023年第12期30卷 15-28页

作者： Dongdong Zhang Ru Xu Shuhan Chen Huihui Du Shi Qian Feng Peng Xuanyong Liu State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai200050China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing100049China Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma The University of Hong Kong Shenzhen HospitalShenzhenChina Center for Human Tissues and Organs Degeneration Shenzhen Institutes of Advanced TechnologyChinese Academy of ScienceShenzhen518055PR China Medical Research Institute Department of OrthopedicsGuangdong Provincial People’s Hospital(Guangdong Academy of Medical Sciences)Southern MedicalUniversityGuangzhou510080China GuangDong Engineering Technology Research Center of Functional Repair of Bone Defects and Biomaterials Guangzhou510080China School of Chemistry and Materials Science Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of Sciences1 Sub-lane XiangshanHangzhou310024China

Promoting metallic magnesium(Mg)-based implants to treat bone diseases in clinics,such as osteosarcoma and bacterial infection,remains a challenging ***,an iron hydroxide-based composite coating with a twostage nanosheet-like structure was fabricated on Mg alloy,and this was followed by a thermal reduction treatment to break some of the surface Fe–OH *** coating demonstrated three positive changes in properties due to the ***,the removal of–OH made the coating superhydrophobic,and it had self-cleaning and antifouling *** is beneficial for keeping the implants clean and for anti-corrosion before implantation into the human ***,the superhydrophobicity could be removed by immersing the implant in a 75%ethanol solution,to further facilitate biological action during ***,the color of the coating changed from yellow to brown-black,leading to an increase in the light absorption,which resulted in an excellent photothermal ***,the defects increased the Fe2+content in the coating and highly improved peroxidase ***,the defect coating exhibited synergistic photothermal/chemodynamic therapeutic effects for bacteria and ***,the coating substantially enhanced the anti-corrosion and biocompatibility of the Mg ***,this study offers a novel multi-functional Mg-based implant for osteosarcoma therapy.

关键词： Magnesium-based implants Surface defects Superhydrophobic Anti-bacterial Anti-tumor

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In-situ generation of poly(quinolizine)s via catalyst-free polyannulations of activated diyne and pyridines

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science China Chemistry 2022年第4期65卷 789-795页

作者： Benzhao He Jiachang Huang Jing Zhang Xinyue Liu Dong Wang Herman H.Y.Sung Yajun Liu Anjun Qin Jacky W.Y.Lam Ben Zhong Tang Center for Advanced Materials Research Science and Technology Experimental PlatformAdvanced Institute of Natural SciencesBeijing Normal University at ZhuhaiZhuhai 519085China Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstructionand Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional MaterialsThe Hong Kong University of Science&TechnologyKowloonHong KongChina Center for AIE Research College of Materials Science and EngineeringShenzhen UniversityShenzhen 518060China Department of Laboratory Medicine Nanfang HospitalSouthern Medical UniversityGuangzhou 510515China State Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Luminescence from Molecular AggregatesCenter for Aggregation-Induced EmissionSouth China University of TechnologyGuangzhou 510640China HKUST-Shenzhen Research Institute Shenzhen 518057China Shenzhen Institute of Aggregate Science and Technology School of Science and EngineeringThe Chinese University of Hong KongShenzhen 518172China

The development of new polymerization routes to afford N-heterocyclic polymers is of vital importance and highly desired for various practical applications. Herein, a facile and efficient polyannulation reaction of dual-activated alkyne and pyridines was developed to construct novel N-heterocyclic poly(quinolizine)s. This polymerization can proceed smoothly under catalystfree conditions with 100% atom utilization to furnish poly(quinolizine)s with high molecular weights(up to 34,100) and welldefined structures in acceptable yields. The resulting polymers show good solubility, high thermal stability and strong red emission. Moreover, the prepared poly(quinolizine)s exhibit low cytotoxicity and can selectively label lysosomes in live *** the remarkable advantages of readily available raw materials, mild polymerization conditions, atom economy, and excellent product performance, this new and efficient polymerization tool will open up enormous opportunities for preparing functional N-heterocyclic polymers.

关键词： polyannulation activated alkyne N-heterocyclic polymers poly(quinolizine)s bioimaging

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