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Local density of optical states calculated by the mode spectrum in stratified media

Chinese Physics B 2023年第4期32卷 135-141页

作者：傅廷陈静瑄王学友戴迎秋周旭彦王宇飞王明金郑婉华 Laboratory of Solid State Optoelectronics Information Technology Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China College of Future Technology University of Chinese Academy of SciencesBeijing 101408China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China State Key Laboratory on Integrated Optoelectronics Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China Weifang Academy of Advanced Opto-electronic Circuits Weifang 261021China

The local density of optical states(LDOS)is an important physical concept,which can characterize the spontaneous emission of *** order to calculate the LDOS,the relationship between the mode spectrum and the LDOS is ***,based on the transfer matrix method and the effective resonator model,the leaky loss of the leaky mode and the mode spectrum in the one-dimensional photonic bandgap crystal waveguide are calculated,results of which indicate that the mode spectrum can characterize the leaky loss of the leaky *** last,the density of optical states(DOS),and the LDOS in each layer are *** partial DOS and the partial LDOS in the quantum well,related to the fundamental leaky mode,can be used to find out the optimal location of the quantum well in the defect layer to couple more useful photons into the lasing mode for lasers.

关键词： local density of optical states mode spectrum transfer matrix method

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Building better solid-state batteries with silicon-based anodes

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Interdisciplinary materials 2023年第4期2卷 635-663页

作者： Zhefei Sun Quanzhi Yin Haoyu Chen Miao Li Shenghui Zhou Sifan Wen Jianhai Pan Qizheng Zheng Bing Jiang Haodong Liu Kangwoon Kim Jie Li Xiang Han Yan-Bing He Li Zhang Meicheng Li Qiaobao Zhang State Key Laboratory of Physical Chemistry of Solid Surfaces College of MaterialsXiamen UniversityXiamenFujianChina State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringCollaborative Innovation Center of Chemistry for Energy MaterialsTan Kah Kee Innovation LaboratoryXiamen UniversityXiamenFujianChina State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources School of New EnergyNorth China Electric Power UniversityBeijingChina Center for Memory and Recording Research Building University of California San DiegoLa JollaCaliforniaUSA Department of Energy Politecnico di MilanoMilanItaly Co-Innovation Center of Efficient Processing and Utilization of Forest Resources College of Materials Science and EngineeringNanjing Forestry UniversityNanjingJiangsuChina Tsinghua Shenzhen International Graduate School Shenzhen All-Solid-State Lithium Battery Electrolyte Engineering Research Center and Shenzhen Geim Graphene CenterInstitute of Materials Research(IMR)Tsinghua UniversityShenzhenChina Shenzhen Research Institute of Xiamen University ShenzhenChina

Silicon(Si)-based solid-state batteries(Si-SSBs)are attracting tremendous attention because of their high energy density and unprecedented safety,making them become promising candidates for next-generation energy storage ***,the commercialization of Si-SSBs is significantly impeded by enormous challenges including large volume variation,severe interfacial problems,elusive fundamental mechanisms,and unsatisfied electrochemical ***,some unknown electrochemical processes in Si-based anode,solid-state electrolytes(SSEs),and Si-based anode/SSE interfaces are still needed to be explored,while an in-depth understanding of solid–solid interfacial chemistry is insufficient in *** review aims to summarize the current scientific and technological advances and insights into tackling challenges to promote the deployment of ***,the differences between various conventional liquid electrolyte-dominated Si-based lithium-ion batteries(LIBs)with Si-SSBs are ***,the interfacial mechanical contact model,chemical reaction properties,and charge transfer kinetics(mechanical–chemical kinetics)between Si-based anode and three different SSEs(inorganic(oxides)SSEs,organic–inorganic composite SSEs,and inorganic(sulfides)SSEs)are systemically reviewed,***,the progress for promising inorganic(sulfides)SSE-based Si-SSBs on the aspects of electrode constitution,three-dimensional structured electrodes,and external stack pressure is highlighted,***,future research directions and prospects in the development of Si-SSBs are proposed.

关键词： interfaces Si-based anodes solid-state batteries solid-state electrolytes

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Stretchable and self-healable spoof plasmonic meta-waveguide for wearable wireless communication system

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Light(science & Applications) 2022年第11期11卷 2725-2737页

作者： Bu-Yun Yu De-Wei Yue Ke-Xin Hou Lu JU Hao Chen Cong Ding Zhen-Guo Liu Yun-Qian Dai Hari Krishna Bisoyi Ying-Shi Guan Wei-Bing Lu Cheng-Hui Li Quan Li State Key Laboratory of Millimeter Waves School of Information Science and EngineeringSoutheast UniversityNanjing 210096China Center for Flexible RF Technology Frontiers Science Center for Mobile Information Communication and SecuritySoutheast UniversityNanjing 210096China Purple Mountain Laboratories Nanjing 21111China State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China Institute of Advanced Materials and School of Chemistry and Chemical Engineering Southeast UniversityNanjing 211189China Advanced Materials and Liquid Crystal Institute and Chemical Physics Interdisciplinary Program Kent State UniversityKentOH 44242USA

Microwave transmission lines in wearable systems are easily damaged after frequent mechanical deformation,posing a severe threat to wireless ***,we report a new strategy to achieve stretchable microwave transmission lines with superior reliability and durability by integrating a self-healable elastomer with serpentine-geometry plasmonic meta-waveguide to support the spoof surface plasmon polariton(SSPP).After mechanical damage,the self-healable elastomer can autonomously repair itself to maintain the electromagnetic performance and mechanical ***,the specially designed SSPP structure exhibits excellent stability and damage *** if the self-healing process has not been completed or the eventual repair effect is not ideal,the spoof plasmonic meta-waveguide Can still maintain reliable ***-healing material enhances strength and durability,while the SSPP improves stability and gives more tolerance to the self-healing *** design coordinates the structural design with material synthesis to maximize the advantages of the SSPP and self-healing material,signifcantly improving the relability and durability of stretchable microwave transmission *** also perform communication quality experiments to demonstrate the potential of the proposed meta-waveguide as interconnects in future body area network systems.

关键词： process durability maintain

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二维限域Ir/WOx异质界面促进酸性氧析出反应实现安培级稳定的质子交换膜水电解（英文）

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science China materials 2025年

作者：蔡俊林黄虹浦陈伟珍彭宇航付露红王淑棚邹忠元傅智超王晓虹谢兆雄谢水奋 Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing College of Materials Science and Engineering Huaqiao University State Key Laboratory of Physical Chemistry of Solid Surfaces Collaborative Innovation Center of Chemistry for Energy Materials College of Chemistry and Chemical Engineering Xiamen University Faculty of Materials Science and Engineering Kunming University of Science and Technology

铱（Ir）基材料是质子交换膜水电解槽（PEMWE）中酸性氧析出反应（OER）目前唯一可商业化的阳极电催化剂.降低Ir用量并提升其催化性能是实现PEMWE规模化应用的关键.本文通过精准合成,构建了由Ir纳米晶粒嵌入非晶态WOx基体的超薄二维杂...

铱（Ir）基材料是质子交换膜水电解槽（PEMWE）中酸性氧析出反应（OER）目前唯一可商业化的阳极电催化剂.降低Ir用量并提升其催化性能是实现PEMWE规模化应用的关键.本文通过精准合成,构建了由Ir纳米晶粒嵌入非晶态WOx基体的超薄二维杂化纳米片（Ir/WOxNSs）其丰富的二维限域异质界面显著提升了酸性OER活性和稳定性.在300 mV过电势下,Ir/WOxNSs的质量活性达2.34 A mgIr-1,分别为Ir NSs和商用Ir/C催化剂的11.1倍和9.8倍.机理研究表明,晶态Ir纳米晶与非晶WOx基体的二维限域效应不仅形成协同双功能活性位点,还加速电荷传输并促进水解离初始步骤.同时,界面Ir原子优化了*O中间体吸附及*OOH生成路径,通过吸附质演化机制降低反应能垒.基于Ir/WOxNSs组装的PEMWE在1.0 A cm-2电流密度下仅需1.71 V槽电压,并展现出优异的长期稳定性.

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Hydrophobic organic coating based water–solid TENG for water-flow energy collection and self-powered cathodic protection

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Frontiers of materials science 2021年第4期15卷 601-610页

作者： Yupeng LIU Guoyun SUN Ying LIU Weixiang SUN Daoai WANG State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China Institute of Materials Science and Engineering Ocean University of ChinaQingdao 266100China Qingdao Center of Resource Chemistry and New Materials Qingdao 266100China School of Materials Science and Engineering Shandong University of Science and TechnologyQingdao 266100China

Water-solid triboelectric nanogenerators(TENGs),as new energy collection devices,have attracted increasing attention in ocean energy harvesting and selfpowered *** acid(PAA)coating,usually used on the surface of marine equipment,has the property of anti-aging and anti-wear but limits triboelectrical output when used with *** this paper,polyacrylic acid coating was modified with fluorinated polyacrylate resin(F-PAA)to increase its triboelectrical output,by 6 times,and also to increase its anti-corrosion *** addition,the corrosion resistance property can be further enhanced by cathodic protection using the electrical output generated by the water-flow triboelectrical energy transfer *** their easy fabrication,water-flow energy harvesting,and corrosion resistance,PAA/F-PAA coating-based TENGs have promising applications in river and ocean energy collection and corrosion protection.

关键词： TENG hydrophobic coating energy collection anticorrosion cathodic protection

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engineering the axial coordination of cobalt single atom catalysts for efficient photocatalytic hydrogen evolution

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Nano Research 2024年第6期17卷 5114-5121页

作者： Ning Kang Lingwen Liao Xue Zhang Zhen He Binlu Yu Jiahong Wang Yongquan Qu Paul KChu Seeram Ramakrishna Xue-Feng Yu Xin Wang Licheng Bai Materials Interfaces Center Shenzhen Institute of Advanced TechnologyChinese Academy of Sciences(CAS)Shenzhen 518055China Key Laboratory of Materials Physics Anhui Key Laboratory of Nanomaterials and NanotechnologyCAS Center for Excellence in NanoscienceInstitute of Solid State PhysicsChinese Academy of SciencesHefei 230031China Department of Chemistry City University of Hong KongKowloonHong Kong 999077China Hong Kong Branch of National Precious Metals Material Engineering Research Center(NPMM) City University of Hong KongKowloonHong Kong 999077China Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Department of Physics and Department of Materials Science and Engineering City University of Hong KongKowloonHong Kong 999077China National University of Singapore(NUS)Centre for Nanofibers and Nanotechnology Department of Mechanical EngineeringNational University of SingaporeSingapore 117542Singapore

Improving the catalytic activity of non-noble metal single atom catalysts(SACs)has attracted considerable attention in materials *** optimizing the local electronic structure of single atom can greatly improve their catalytic activity,it often involves in-plane modulation and requires high ***,we report a novel strategy to manipulate the local electronic structure of SACs via the modulation of axial Co-S bond anchored onto graphitic carbon nitride(C_(3)N_(4))at room temperature(RT).Each Co atom is bonded to four N atoms and one S atom(Co-(N,S)/C_(3)N_(4)).Owing to the greater electronegativity of S in the Co-S bond,the local electronic structure of the Co atoms is available to be controlled at a relatively moderate ***,when employed for the photocatalytic hydrogen evolution reaction,the adsorption energy of intermediate hydrogen(H*)on the Co atoms is remarkably *** the presence of the Co-(N,S)/C_(3)N_(4)SACs,the hydrogen evolution rates reach up to 10 mmol/(g·h),which is nearly 10 and 2.5 times greater than the rates in the presence of previously reported transition metal/C_(3)N_(4)and noble platinum nanoparticles(PtNPs)/C_(3)N_(4)catalysts,*** to the tailorable axial Co-S bond in the SAC,the local electronic structure of the Co atoms can be further optimized for other photocatalytic *** axial coordination engineering strategy is universal in catalyst designing and can be used for a variety of photocatalytic applications.

关键词： transition metal single-atom local electronic structure photocatalytic hydrogen evolution graphitic carbon nitride axial coordination environment

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Ultrafast Cointercalation Chemistry for Low-Temperature Sodium-Ion Batteries

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Journal of the American Chemical Society 2025年第24期147卷 20431-20441页

作者： Chen, Yongqi Chen, Likun Dong, Zhe Lou, Chenjie Han, Zhuo Li, Xudong Xiao, Guanyou Lv, Wei He, Yan-Bing Kang, Feiyu Liu, Ming Shenzhen All-Solid-State Lithium Battery Electrolyte Engineering Research Center Institute of Materials Research (IMR) Tsinghua Shenzhen International Graduate School Shenzhen 518055 China School of Materials Science and Engineering Tsinghua University Beijing 100084 China

Sodium-ion batteries (SIBs) offer a sustainable and promising solution for large-scale energy storage because of their low cost and abundant element resources, especially in cold environments, where traditional batteries struggle. The cointercalation chemistry for graphite anode presents a potential avenue due to its fast intercalation kinetics, but it faces significant challenges at low temperatures. Herein, we first unravel a previously overlooked desolvation behavior in the cointercalation system, a key factor in performance decay under low temperatures. We propose a novel two-step reaction mechanism involving partial desolvation and interlayer diffusion for the cointercalation chemistry, which demonstrates the challenge of single-solvent solvation structures in achieving overall kinetics. Based on this, we developed an electrolyte composed of solvents with strong and weak solvation capabilities to accelerate the above two dynamic processes. Benefiting from the unique dual-solvent solvation structure, fast partial desolvation is realized by the easy removal of weakly solvating solvents, while rapid interlayer diffusion is driven by solvated Na+ with strong solvents, verified by solid-state nuclear magnetic resonance (ss-NMR). The assembled battery shows an ultrahigh capacity retention of up to ∼90.0% at −30 °C compared with that at room temperature at 1 C. Under this temperature, the battery still shows excellent rate performance with a high capacity maintenance of ∼ 84% for the rate increasing from 0.1 to 5 C. © 2025 American Chemical Society.

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Application of MXenes in lithium-sulfur batteries

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science China(Technological sciences) 2022年第10期65卷 2259-2273页

作者： HOU JiYue WANG Ying YANG WenHao WANG Fei YANG Dong ZHANG YiYong LIANG Feng LI Xue ZHANG YingJie ZHAO JinBao National and Local Joint Engineering Laboratory for Lithium-ion Batteries and Materials Preparation Technology Faculty of Metallurgical and Energy EngineeringKunming University of Science and TechnologyKunming 650093China College of Electrical Information Engineering PanZhihua UniversityPanzhihua 617000China State Key Laboratory of Physical Chemistry of Solid Surfaces State-Province Joint Engineering Laboratory of Power Source Technology for New Energy VehicleCollaborative Innovation Center of Chemistry for Energy MaterialsCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China

Although lithium-sulfur batteries are considered one of the most potential next-generation energy storage systems owing to their high-energy density, the dissolution and shuttle of intermediate lithium polysulfides primarily limit their commercial applications. Currently, the search for new materials for high-performance lithium-sulfur batteries has become a global research ***, two dimensional inorganic compound comprising several layers of transition metal carbide, nitride, or car-bonitride,are actively investigated owing to their large specific surface area, good conductivity, and excellent cycle and rate *** article firstly reviews the breakthrough of MXenes in lithium-sulfur batteries, introduces the preparation methods and structural characteristics, and summarizes the specific applications and modification mechanisms in lithium-sulfur ***, the characteristics and advantages of MXenes as a composite electrode material for lithium-sulfur batteries are highlighted. Finally, the potential in future commercial applications is summarized.

关键词： lithium-sulfur battery MXenes two-dimensional nanomaterials sulfur fixation performance sulfur fixation mechanism

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Progress in first-principles studies on doped semiconductor diamond

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The European Physical Journal Special Topics 2025年 1-18页

作者： Wang, Zhen Jin, Peng Qu, Pengfei Cao, Fanqiu Han, Xu Wang, Zhanguo Laboratory of Solid-State Optoelectronic Information Technology Institute of Semiconductors Chinese Academy of Sciences Beijing China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing China

As an ultra-wide bandgap semiconductor, diamond possesses many excellent properties, making it a highly promising material for applications in high-frequency, high-power, and deep-ultraviolet semiconductor devices. Achieving efficient p-type and n-type doping is a fundamental requirement for the fabrication of diamond-based semiconductor devices. Currently, the mainstream doping elements are boron (p-type) and phosphorus (n-type). However, both elements introduce relatively deep impurity levels at room temperature, which hinders further applications. With the advancement of first-principles calculations and high-performance computing using supercomputers and computing clusters, it has become feasible to theoretically predict the doping properties of diamond. This paper primarily focuses on the progress in theoretical research on p-type and n-type doping in diamond based on first-principles methods, covering both single-element doping and co-doping with multiple elements. In addition, it summarizes the challenges in this field and provides an outlook on future research.

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Advances in powder nano-photocatalysts as pollutant removal and as emerging contaminants in water:Analysis of pros and cons on health and environment

Advanced Powder Materials

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Advanced Powder materials 2024年第6期3卷 33-69页

作者： Sahil Thakur Abhijeet Ojha Sushil Kumar Kansal Navneet Kumar Gupta Hendrik C.Swart Junghyun Cho Andrej Kuznetsov Shuhui Sun Jai Prakash Department of Chemistry National Institute of Technology HamirpurHamirpur(H.P.)177005India Department of Materials Science and Engineering National Institute of Technology HamirpurHamirpur(H.P.)177005India Dr.S.S.Bhatnagar University Institute of Chemical Engineering and Technology Panjab UniversityChandigarh 160014India Center for Sustainable Technologies Indian Institute of Science(IISc)Gulmohar MargMathikereBengaluru 560012India Department of Physics University of the Free State(UFS)BloemfonteinZA 9300South Africa Department of Mechanical Engineering&Materials Science and Engineering Program State University of New York(SUNY)BinghamtonNY 13902-6000USA University of Oslo Department of Physics and Centre for Materials Science and NanotechnologyPO Box 1048 BlindernN-0316OsloNorway Institut National de la Recherche Scientifique(INRS)-CentreEnergie Materiaux et Telecommunications VarennesQuebec J3X 1P7Canada

Photocatalysis is an advanced oxidation process where light exposure triggers a semiconducting nanomaterial(nano-photocatalyst)to generate electron-hole(e^(-)/h^(+))pairs and free *** phenomenon is widely used for the photocatalysis-assisted removal of organic and other contaminants using wide range of nanophotocatalysts,offering an efficient approach to environmental ***,the introduction of powdered nano-photocatalysts into water systems often leads to unintended secondary pollution in the form of residual nano-photocatalysts,ion leaching,free radicals,toxic by-products *** practices potentially introduce emerging secondary contaminants into aquatic environments,posing risks to both aquatic life and human *** resulting chemical by-products and intermediates can effectively induce chronic toxicity,neurological and developmental disorders,cardiovascular defects,and intestinal ailments in humans and aquatic *** having a range of health and environmental consequences,this dark side of nano-photocatalysts has been comparatively less explored and discussed in the *** this review,the pros and cons of powder nanophotocatalysts are discussed in view of their advantages as well as disadvantages in wastewater *** discussion encompasses their classification based on composition,dimensions,structure,and activity,as well as recent advancements in improving their photocatalytic *** article also explores the recent advances on their applications in photocatalytic removal of various water pollutants/contaminants of emerging concern(i.e.,organic pollutants,micro/nano plastics,heavy ions,disinfections,etc.)Furthermore,an emphasis on the role of such nano-photocatalysts as emerging(secondary)contaminants in water system,along with a thorough discussion of latest studies related to the health and environmental issues,has been ***,it addresses critical issues in applying powder nano-photo

关键词： Powder nano-photocatalysts Advanced oxidation processes Wastewater treatment Pros and cons Emerging contaminants Health and environment issues

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