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Enhancing I0/I-Conversion Efficiency by Starch Confinement in Zinc-Iodine Battery

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Energy & Environmental Materials 2024年第1期7卷 118-124页

作者： Danyang Zhao Qiancheng Zhu Qiancheng zhou Wenming zhang {2. Yu Shuo Chen Zhifeng Ren Institute of Nanoscience and Nanotechnology College of Physical Science and Technology Central China Normal University National & Local Joint engineering Laboratory of New Energy Photoelectric Devices College of Physics Science and Technology Hebei University Department of physics and Tc SUH University of Houston

The redox couple of I0/I-in aqueous rechargeable iodine-zinc（I2.Zn）batteries is a promising energy storage resource since it is safe and costeffective,and provides steady output ***,the cycle life and efficiency of these batteries remain unsatisfactory due to the uncontrolled shuttling of polyiodide（I3-and I5-） and side reactions on the Zn anode.

关键词： aqueous battery conversion efficiency iodine–zinc battery starch confinement

High-efficiency ultrasonic assisted drilling of CFRP/Ti stacks under non-separation type and dry conditions

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Journal of Zhejiang university-Science A(Applied physics & {2.) 2024年第4期25卷 275-291页

作者： Enze ying Zehua zhou Daxi GENG Zhenyu SHAO Zhefei SUN Yihang LIU Lianxing LIU Xinggang JIANG Deyuan {2. School of Mechanical engineering and Automation Beihang UniversityBeijing 100191China Beijing Chenjing electronics Company Limited Beijing 100015China Aerospace Times Feihong Technology Company Limited Beijing 100094China

In this study,to address the low efficiency for conventional ultrasonic-assisted drlling(UAD)of carbon fiber-reinforced plastic and titanium alloy(CFRP/Ti)stacks,feasibility experiments of non-separation UAD,in which continuous cutting between the tool and the workpiece occurs at a high feed rate,are carried *** experimental results indicate that,compared to conventional separation UAD,the non-separation UAD effectively reduces the cutting forces by 2..2.and 1.9%for CFRP stage and 2.0}%and 2.6%for the Ti stage at the feed rates of 50 and 70μm/r,***,the non-separation UAD significantly improves hole quality,including higher hole diameter accuracy,lower hole surface roughness,and less hole *** addition,the non-separation UAD can decrease adhesive tool *** study demonstrates that,compared to conventional drilling(CD),the non-separation UAD can effectively improve drilling quality and tool life while maintaining high efficiency.

关键词： Carbon fiber-reinforced plastic and titanium alloy(CFRP/Ti)stacks Ultrasonic-assisted drlling(UAD) Cutting force Surface integrity Tool wear

Robust H∞ Control for Varying Sampling Networked Control Systems

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Robust H∞ Control for Varying Sampling Networked Control Sy...

Enhancing I^(0)/I^(-)Conversion Efficiency by Starch Confinement in Zinc-lodine Battery

2.10 Chinese Control and Decision Conference

作者： BiCheng Lei~1,Shiqing zhang~2.1,2.{2. of {2. and Electronic engineering,taizhou university,taizhou,ZheJiang Province,China,318000,

＜正＞For the robustness of varying sampling networked control system,a designed method of varying sampling H∞controller is *** on the character of the system,the system is modeled as switching *** study utilizes Lyapunov function to demonstrate the system stability and H∞performance,then presents sufficient conditions in which the H∞performance should be satisfied via LMI（linear matrix inequality）.Furthermore,the designed method of H∞state feedback controller is *** to the method,the H∞performance and H∞controller are solved by using the LMI toolbox in examples *** results of simulation show the feasibility and validity of the method.

关键词： Networked Control Systems Switching System Lyapunov Function LMI Varying Sampling

来源： cnki会议评论

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Energy & Environmental Materials 2024年第1期7卷 114-120页

作者： Danyang Zhao Qiancheng Zhu Qiancheng zhou Wenming zhang {2. Yu Shuo Chen Zhifeng Ren Institute of Nanoscience and Nanotechnology College of Physical Science and TechnologyCentral China Normal UniversityWuhan 430079China National&Local Joint engineering Laboratory of New Energy Photoelectric Devices College of Physics Science and TechnologyHebei UniversityBaoding 071002China Department of physics and TcSUH University of HoustonHouston Texas 77204USA

The redox couple of I^(0)/I^(-)in aqueous rechargeable iodine–zinc(I^(2.-Zn)batteries is a promising energy storage resource since it is safe and cost-effective,and provides steady output ***,the cycle life and efficiency of these batteries remain unsatisfactory due to the uncontrolled shuttling of polyiodide(I_(3)^(-)and I_(5)^(-))and side reactions on the Zn *** is a very low-cost and widely sourced food used daily around the world.“Starch turns blue when it encounters iodine”is a classic chemical reaction,which results from the unique structure of the helix starch molecule–iodine *** by this,we employ starch to confine the shuttling of polyiodide,and thus,the I^(0)/I^(-)conversion efficiency of an I^(2.-Zn battery is clearly *** to the detailed characterizations and theoretical DFT calculation results,the enhancement of I^(0)/I^(-)conversion efficiency is mainly originated from the strong bonding between the charged products of I_(3)^(-)and I_(5)^(-)and the rich hydroxyl groups in *** work provides inspiration for the rational design of high-performance and low-cost I^(2.-Zn in AZIBs.

关键词： aqueous battery conversion efficiency iodine-zinc battery starch confinement

The dynamical properties of Rydberg hydrogen atom near a metal surface

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Science China(physics,Mechanics & Astronomy) 2005年第6期48卷 667-675页

作者： GE Meihua1, zhang Yanhui1, WANG Dehua2. DU Mengli3 & LIN Shenglu1 1. college of {2. and electronics, Shandong Normal university, Jinan 2.0014, China 2. Department of Mathematics and {2., Shandong Institute of Architecture and engineering, Jinan 2.0014, China 3. Institute of Theoretical {2., Chinese Academy of Sciences, Beijing 100080, China college of physics and {2. Shandong Normal University Jinan China Department of Mathematics and physics Shandong Institute of Architecture and Engineering Jinan China Institute of Theoretical physics Chinese Academy of Sciences Beijing China

The dynamical properties of Rydberg hydrogen atom near a metal surface are presented by using the methods of phase space analysis and closed orbit theory. Transforming the coordinates of the Hamiltonian, we find that the phase space of the system is divided into vibrational and rotational region. Both the Poincaré surface of section and the closed orbit theory verify the same conclusion clearly. In this paper we choose the atomic principal quantum number as n = 2.. The dynamical character of the exited hydrogen atom depends sensitively on the atom-surface distance d. When d is sufficiently large, the atom-surface potential can be expressed by the traditional van der Waals force and the system is integrable. When d becomes smaller, there exists a critical value dc. For d > dc, the system is near-integrable and the motion is regular. While chaotic motion appears for d < dc, and the system tends to be non-integrable. The trajectories become unstable and the electron might be captured onto the metal surface.

关键词： Rydberg hydrogen atom, van der Waals interaction, Poincaré surface of section, closed orbit theory, chaos.

维普期刊数据库

Construction of Naphthalenediimide Lanthanide(Ⅲ)-MOFs and Composites Incorporated Electron-Rich Pyrene Derivative as Multifunctional Fluorescence Sensing for Nitro Aromatic Compounds and Aldehydes

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Chinese Journal of Chemistry 2024年第3期42卷 283-293页

作者： Rong Huo Ting zhang Guang Zeng Chen Wang Yong Heng Xing Feng ying Bai college of Chemistry and Chemical engineering Liaoning Normal UniversityDalianLiaoning116029 China State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalianLiaoning116023 China

The development of host-guest MOF luminescent composites has attracted considerable attention. However,it is still a challenge to reasonably design large scale conjugated polycarboxylic acids metal-organic framework (MOF) and modulate donor-acceptor interaction. Herein,a series of isostructural 3D porous lanthanide MOF [Ln_(2.(BINDI)0.5(NO_(3))(DMA)(H_(2.O)]∙DMA∙2.5H_(2.O (Ln = La (1),Ce (2.,Pr (3) and Nd (4);H_(4)BINDI (N,N’-bis(5-isophthalic acid)-1,4,5,8-naphthalenediimide) were synthesized. Considering the electron-deficient performances of Ln-BINDI MOFs,D-A type composites Ln-MOFs (1—4@H_(4)TBAPy) were prepared via the incorporation of electron-rich H_(4)TBAPy (1,3,6,8-tetrakis(p-benzoic acid) pyrene),which more improved the luminescence performance of complexes 1—4 and can be used as fluorescence sensors for the detection of nitro compounds and aldehydes. High sensitivity of 1@H_(4)TBAPy towards pNBA,pNA PNP,DNP,and TNP could be achieved through hydrogen bond interactions between MOF and analytes,as well as the π-π interaction between H_(4)TBAPy and the naphthalene ring of BINDI,thus the fluorescence quenching efficiency of 1@H_(4)TBAPy was better than that of the complex 1. In addition,it is found that 1@H_(4)TBAPy has high selectivity and sensitivity to aromatic aldehyde SA,5-Mesal and HMBA. Such strategy to enhance the emission of NDI based Ln-BINDI MOFs,will open up an avenue to obtain more fluorescent MOFs for sensing.

关键词： Ln-MOF Pyrene molecule NACs Aldehydes Fluorescence sensing Carboxylate ligands Charge transfer Donor-acceptor systems

Piperazine-Assisted Construction of 2./3D Wide-Bandgap Perovskite for Realizing High-Efficiency Perovskite/Organic Tandem Solar Cells

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Chinese Journal of Chemistry 2024年第16期42卷 1819-1827页

作者： Ziyue Wang Shuaiqing Kang Xia zhou Haiyang Chen Xingxing Jiang Zhichao zhang Jialei Zheng Ruopeng zhang Weijie Chen Jiandong zhang Yaowen Li Laboratory of Advanced Optoelectronic Materials Suzhou Key Laboratory of Novel Semiconductor-optoelectronics Materials and DevicesCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhouJiangsu 215123China Jiangsu Key Laboratory of Advanced Negative Carbon Technologies Soochow UniversitySuzhouJiangsu 215123China State and Local Joint engineering Laboratory for Novel Functional Polymeric Materials Jiangsu Key Laboratory of Advanced Functional Polymer Design and ApplicationCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhouJiangsu 215123China college of physics and {2. engineering Hengyang Normal UniversityHengyangHunan 421002China

Monolithic perovskite/organic tandem solar cells(TsCs)have gained significant attention due to their easy device integration and the potential to surpass the Shockley-Queisser limit of single-junction solar ***,the surfaces of wide-bandgap perovskite films are densely populated with defects,leading to severe non-radiative recombination and energy *** a consequence,the power conversion efficiency(PCE)of perovskite/organic TSCs lags behind that of other TSC *** address these issues,we designed a functional ammonium salt,4-(2.hydroxyethyl)piperazin-1-ium iodide(Pzol),comprising a piperazine iodide and a terminated hydroxyl group,which was applied for post-treating the perovskite *** findings reveal that Pzol reacts with and consumes residual PbX_(2.(X:I or Br)to form a 2. perovskite component,thereby eliminating Pb^(0)defects,while the terminated hydroxyl group in PZOI can also passivate uncoordinated Pb^(2.).Consequently,the shallow/deep-level defect densities of the 2./3D perovskite film were significantly reduced,leading to an enhanced PCE of single-junction 2./3D wide-bandgap perovskite solar cells to 18.18% with a reduced energy loss of 40 ***,the corresponding perovskite/organic TSCs achieved a remarkable PCE of 2..05% with enhanced operational stability(T_(90)~500h).

关键词： Perovskite/organic tandem solar cell Defect states Piperazine ion salt Energy conversion Low-dimensional materials Perovskitesolar cells 2./3D perovskites Efficiency

Flame-assisted ultrafast synthesis of functionalized carbon nanosheets for high-performance sodium storage

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Carbon Energy 2024年第7期6卷 123-133页

作者： Chen Chen Dong Yan Yew Von Lim Lei Liu Xue Liang Li Junjie Chen Tian Chen Li Youyu Zhu Jiangtao Cai ying Huang Yating zhang Hui ying Yang School of Chemistry and Chemical engineering Northwestern Polytechnical UniversityXi'anChina Pillar of engineering Product Development Singapore University of Technology and DesignSingaporeSingapore School of Electrical engineering Xi'an University of TechnologyXi'anChina International Joint Laboratory of New Energy Materials and Devices of Henan Province School of Physics and ElectronicsHenan UniversityKaifengChina college of Chemistry and Chemical engineering Xi'an University of Science and TechnologyXi'anChina

The unique structural features of hard carbon(HC)make it a promising anode candidate for sodium-ion batteries(SIB).However,traditional methods of preparing HC require special equipment,long reaction times,and large energy consumption,resulting in low throughputs and *** our contribution,a novel synthesis method is proposed,involving the formation of HC nanosheets(NS-CNs)within minutes by creating an anoxic environment through flame combustion and further introducing sulfur and nitrogen sources to achieve heteroatom *** effect of heterogeneous element doping on the microstructure of HC is quantitatively analyzed by high-resolution transmission electron microscopy and image processing *** with density functional theory calculation,it is verified that the functionalized HC exhibits stronger Na^(+)adsorption ability,electron gain ability,and Na^(+)migration *** a result,NS-CNs as SIB anodes provide an ultrahigh reversible capacity of 542.7mAh g^(-1) at 0.1Ag^(-1),and excellent rate performance with a reversible capacity of 2.6.4mAh g^(-1) at 2.g^(-1) after 12.0 ***,full cell assembled with NS-CNs as the can present 2.0mAh g^(-1) at 0.5Ag^(-1) after 150 ***,in/ex situ techniques confirm that the excellent sodium storage properties of NS-CNs are due to the construction of abundant active sites based on the novel synthesis method for realizing the reversible adsorption of Na^(+).This work provides a novel strategy to develop novel carbons and gives deep insights for the further investigation of facile preparation methods to develop high-performance carbon anodes for alkali-ion batteries.

关键词： carbon nanosheets heteroatom doping sodium-ion battery sustainable materials

Influence of p-layer on the performance of n-i-p μc-Si:H thin film solar cells

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Science China(physics,Mechanics & Astronomy) 2010年第11期53卷 2042-2046页

作者： YUAN YuJie 1,2.zhang KaiLiang 1,2.WEI Zhen 1,2.& GENG XinHua 3 1 college of {2. Information engineering,Tianjin university of Technology,Tianjin 300384,China 2.Tianjin Key Laboratory of Film Electronic and Communication Devices,Tianjin university of Technology,Tianjin 300384,China 3 Institute of Photo-{2. Thin Film Devices and Technique,Nankai university,Tianjin 300071,China college of electronics Information {2. Tianjin University of Technology Tianjin China Tianjin Key Laboratory of Film Electronic and Communication Devices Tianjin University of Technology Tianjin China Institute of Photo-electronics Thin Film Devices and Technique Nankai University Tianjin China

The high pressure radio frequency plasma enhanced chemical vapor deposition (RF-PECVD) process was adopted to prepare the n-i-p microcrystalline silicon solar cells,the influence of p-type layers on the performance of the solar cells was investigated,and the optimum p layer suited to the n-i-p microcrystalline silicon solar cells was *** experimental results demonstrate that the performance of the solar cells can be highly affected by the structural and optical properties of the p-layers,and the performance of solar cells can be greatly improved by optimizing p *** have achieved an initial active-area efficiency of 8.17% (V oc =0.49 V,J sc =2..9 mA/cm 2.,FF=67%) for the μc-Si:H single-junction n-i-p solar cells and an initial active-area efficiency of 10.93% (V oc =1.31 V,J sc =13.09 mA/cm 2.,FF=64%) for the a-Si:H/μc-Si:H tandem n-i-p solar cells.

关键词： microcrystalline silicon solar cells quantum confinement effect p-type layers

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