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Mechanism understanding for stripping electrochemistry of Li metal anode

SusMat 2021年第4期1卷 506-536页

作者： Feng-Ni Jiang Shi-Jie Yang He Liu Xin-Bing Cheng Lei Liu Rong Xiang Qiang Zhang Stefan Kaskel Jia-Qi Huang College of Chemistry and Chemical Engineering Taiyuan University of TechnologyTaiyuanShanxiP.R.China Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijingP.R.China Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijingP.R.China Department of Mechanical Engineering University of TokyoTokyoJapan Department Chemical Surface and Reaction Technology Technische Universität DresdenDresdenGermany

The pursuit of sustainable energy has a great request for advanced energy stor-age *** metal batteries are regarded as a potential electrochemi-cal storage system because of the extremely high capacity and the most nega-tive electrochemical potential of lithium metal *** lithium formed in the stripping process significantly contributes to the low efficiency and short lifespan of rechargeable lithium metal *** review displays a critical review on the current research status about the stripping electrochemistry of lithium metal *** significance of stripping process to a robust lithium metal anode is *** stripping models in different electrochemical scenarios are *** attention is paid to the understanding for the electrochemical principles of atom diffusion,electrochemical reaction,ion dif-fusion in solid electrolyte interphase(SEI),and electron transfer with the pur-pose to strengthen the insights into the behavior of lithium electrode *** factors affecting stripping processes and corresponding solutions are sum-marized and categorized as follows:surface physics,SEI,operational and exter-nal *** review affords fresh insights to explore the lithium anode and design robust lithium metal batteries based on the comprehensive understand-ing of the stripping electrochemistry.

关键词： dead lithium dendrite lithium metal batteries solid electrolyte interphase stripping models

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Exploring the high-temperature mechanical and thermal properties of UM3 (M = Ru, Rh, and Ir) based on density functional theory calculations

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Journal of Nuclear Materials 2025年 615卷

作者： Quan, Hao Qin, Jia-Rui Si, Jian-Guo Li, Wei-Dong Qiu, Rui-zhi Wang, Bao-Tian Institute of Theoretical Physics State Key Laboratory of Quantum Optics and Quantum Optics Devices Collaborative Innovation Center of Extreme Optics Shanxi University Taiyuan030006 China Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China Spallation Neutron Source Science Center Dongguan523803 China Songshan Lake Materials Laboratory Guangdong Dongguan523808 China Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology Center for Intense Laser Application Technology and College of Engineering Physics Shenzhen Technology University Shenzhen518118 China Science and Technology on Surface Physics and Chemistry Laboratory Mianyang621908 China

Uranium and uranium base compounds have important applications in nuclear engineering. Investigating the mechanical and thermal properties of them under extreme conditions of high-temperature or high-pressure are helpful for their realistic applications. Here, using the temperature-dependent effective potential (TDEP) method based on ab initio molecular dynamics (AIMD), the effect of temperature and/or anharmonicity on the elastic, vibrational, and thermal properties of UM3 (M = Ru, Rh, and Ir) was evaluated in the temperature range 0–1200 K. The generalized gradient approximation (GGA) without the U correction was found more advantageous than other calculation schemes. Both U-5f and M-4(5)d electrons have evident occupations at the Fermi energy level and play critical roles in their electronic properties. The mechanical and dynamical stabilities were assessed by calculating elastic constants and phonon dispersions. Upon heating, both the elastic constants Cij and the elastic moduli exhibit an evident decreasing behavior. The temperature-dependent trends of bulk modulus B(T) calculated by the quasi-harmonic approximation (QHA) and TDEP are consistent. The phonon spectra at different temperatures demonstrate that UM₃ remains dynamically stable even when the temperature reaches up to 1200 K. The phonon line shapes are only weakly broadening upon heating, indicating that the anharmonic effect in UM₃ is limited. The thermal conductivities have been evaluated through the Boltzmann transport theory and the long phonon lifetime was found as a significant index for the high lattice thermal conductivity κL of UIr3. Our research provides a theoretical basis for the study of mechanics, thermodynamics, and thermal transport properties of uranium-based heavy intermetallic compounds at high temperatures. © 2025 Elsevier B.V.

关键词： Heat conduction

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Introduction of Multifunctional Small Molecule as Buried Interface Passivator for Efficient Planar Perovskite Solar Cells

Introduction of Multifunctional Small Molecule as Buried Int...

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第三届全国太阳能电池材料与器件大会

作者： Meizi Wu Yuwei Duan Peng You Zhike Liu College of New Materials and New Energies Shenzhen Technology University Key Laboratory of Applied Surface and Colloid Chemistry National Ministry of EducationInstitute for Advanced Energy MaterialsSchool of Materials Science and EngineeringShaanxi Normal University

Introduction P-biguanylbenzoic acid hydrochloride （PBGH） is developed to modify the SnO/perovskite *** one hand,the PBGH can effectively passivate the trap states of Sni and V on the SnO surface via Lewis acid/base coordination,which is conducive to improving the conductivity of SnO film and accelerate the electron *** the other hand,PBGH modification assists the formation of high-quality perovskite film with low defect density due to its strong interaction with ***,the PBGHmodified PSC exhibits a champion PCE of 24.79%.

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Design and application of B‑containing hard coatings for high‑speed dry cutting against Ti‑alloys‑A review

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surface Science and technology 2024年第1期2卷 245-263页

作者： Wei Fang Langlang Tao Benchi Zhang Ju Huang Fei Cai Gobinda Gyawali Shihong Zhang Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials Ministry of EducationAnhui University of TechnologyMaanshan CityAnhui Province 243000P.R.China School of Materials Science and Engineering Anhui University of TechnologyMaanshan CityAnhui Province 243002P.R.China School of Mechanical and Automotive Engineering Anhui Water Conservancy Technical CollegeHefei CityAnhui ProvinceP.R.China

Titanium alloys have been extensively applied due to their outstanding features,including high specific strength and corrosion ***,the machining of these alloys presents challenges,leading to significant tool wear and reduced tool lifetime,ascribed to the difficult-to-machine features of Ti *** the context of pursuing environmental sustainability and enhanced productivity,high-speed dry-cutting technology coupled with high-quality tool coatings are *** paper comprehensively explores wear patterns and recent advancements in tool coatings for high-speed dry cutting of *** coating properties such as resistance to abrasion,adhesion,oxidation,fatigue,hot hardness,and self-adaptability are briefly *** strategies for enhancing micro-hardness,toughness,and adhesion,including nanocomposite,multilayer,and gradient architectures,are also ***,the paper highlights several Boron(B)doped hard coatings as promising candidates for high-speed dry cutting against Ti-alloys,exploring the impact of B on microstructure,hardness,thermal stability,oxidation resistance,and *** summary,this work provides a systematic overview of novel B-doped tool coatings applied in highspeed dry cutting against Ti-alloys.

关键词： High-speed dry cutting Ti-alloy Thermal stability Wear Boron Impacting Fatigue

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Vapor-Phase Polymerization of Fibrous PEDOT on Carbon Fibers Film for Fast Pseudocapacitive Energy Storage

SSRN

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SSRN 2022年

作者： Zhu, Xiaoyan Han, Xiying Guo, Rui Yuan, Peng Dang, Liqin Liu, Zonghuai Lei, Zhibin Key Laboratory of Applied Surface and Colloid Chemistry MOE Shaanxi Engineering Lab for Advanced Energy Technology Shaanxi Key Laboratory for Advanced Energy Devices School of Materials Science and Engineering Shaanxi Normal University 620 West Chang’an Street Shaanxi Xi'An710119 China

Poly(3,4-ethylenedioxythiophene) (PEDOT) has emerged as one of promising conductive polymers holding huge promise in pseudocapacitive energy storage. However, the conventional solution-based oxidative polymerization usually yields PEDOT electrodes with low electric conductivity and limited electroactive surface area. This work reports the preparation of highly conductive fibrous PEDOT by a vapor-phase polymerization initialized with Fe2O3 nanosheets that are uniformly electrochemically deposited on the N-doped carbon nanofibers (CNFs) film. The incorporation of highly conductive PEDOT nanofibers expands the film and simultaneously increase the film conductivity by 80 times (103 S cm-1). The spatially continuous and mechanically robust CNF-PEDOT film features abundant ion and electron pathways. Accordingly, an areal capacitance of 1926 mF cm-2 at PEDOT mass loading of 8.68 mg cm-2 together with a high-rate capability and high utilization efficiency of electrode have been achieved. Especially, the CNF-PEDOT film electrode exhibits an outstanding stability with 87% capacitance retention after 10000 consecutive charging and discharging cycles. Moreover, a CNF-PEDOT-based supercapacitor could deliver an energy density of 97 μWh cm-2 at power density of 0.45 mW cm-2, surpassing the state-of-the-art PEDOT-based devices. This work will open a new avenue for preparing highly conductive PEDOT hybrid electrodes towards high-performance supercapacitors. © 2022, The Authors. All rights reserved.

关键词： Supercapacitor

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A Novel Process of the Bulged Tube Manufactured by Laser-Induced Shock Wave

SSRN

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SSRN 2023年

作者： Zhang, Xingquan Hu, Rui Fang, Jinxiu Zuo, Lisheng Yin, Yuande Wang, Huiting Li, Shengzhi Key laboratory of green Fabrication and Surface Technology of Advanced Metal Materials Ministry of Education Anhui Ma’anshan243002 China School of Mechanical Engineering Anhui University of Technology Anhui Ma’anshan243002 China School of Mechanical Engineering Jiangsu University Zhenjiang212013 China

The novel tube forming technology was introduced, which adopts pulsed laser as a stamping tool to achieve a small-diameter bulged tube that is not available by means of the conventional forming. In this paper, the dynamic forming mechanism of laser shock tube bulging was introduced, and an analytical model was developed to analyze shock wave propagation and tube micro bulging deformation induced by a single laser irradiation. A finite element model was proposed to simulate shock wave propagation and the dynamic progress of the tube expansion. A series of validated deformation experiments were conducted. The investigations show that the laser-induced shock wave diffuses rapidly, and the tube expansion at the shocked zone takes place and the deformed tube presents a micro bulging shape after one laser shocking. The application of the confining layer is very beneficial to enlarge the bulging deformation. The magnitude of the bulged deformation is enlarged with the increase of laser shots. The higher energy of applied laser pulse always results in the larger deformation of the tube. © 2023, The Authors. All rights reserved.

关键词： Wave propagation

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Transparent Organic Glass With Bright Triplet Excitons for High-Spatial-Resolution Indirect X-Ray Imaging via Heavy Metal Halide Incorporation

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advanced Optical Materials 2025年第10期13卷

作者： Xu, Ziwei Li, Nan Feng, Xiaolong Yan, Xiangyang He, Tong Zhang, Lu Liu, Shengzhong Yang, Zhou Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Lab for Advanced Energy Technology Institute for Advanced Energy Materials School of Materials Science and Engineering Shaanxi Normal University Xi'an 710119 China School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710062 China Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China University of the Chinese Academy of Sciences Beijing 100039 China

Organic scintillators are emerging as promising candidates for indirect X-ray imaging due to their tunable luminescent properties. However, achieving high transparency while maintaining a high content of organic luminescent material in organic scintillation pellets remains a challenge, which limits their imaging performance. In this study, a transparent luminescent organic glass based on ethyl-triphenyl-phosphonium chloride (ETPCl) is presented, which exhibits bright exciton emission and enhance X-ray attenuation through the incorporation of lead halide. Remarkably, the addition of lead halide does not compromise the glass's high transparency, which remains ≈90% in the 400–800 nm wavelength range. Transient absorption measurements further reveal that the presence of heavy atoms enhances intersystem crossing and improves triplet emission efficiency, increasing the photoluminescence quantum yield from 7.1% in pure ETPCl glass to 35.4% in glass containing 10 mol.% PbCl₂. Additionally, the heavy atom effect enhances X-ray attenuation, leading to increased radioluminescence intensity. X-ray imaging experiments demonstrate a spatial resolution of up to 19.9 lp mm⁻¹ at a modulation transfer function value of 0.2. These findings provide a promising approach for fabricating transparent organic scintillator glasses with improved triplet exciton utilization and X-ray attenuation, enabling high-resolution X-ray imaging. © 2025 Wiley-VCH GmbH.

关键词： heavy atom effect imaging scintillator spatial resolution triplet emission

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Revealing the Microscopic Mechanism of Elementary Vortex Pinning in Superconductors

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Physical Review X 2024年第4期14卷 041039页

作者： C. Chen Y. Liu Y. Chen Y. N. Hu T. Z. Zhang D. Li X. Wang C. X. Wang Z. Y. W. Lu Y. H. Zhang Q. L. Zhang X. L. Dong R. Wang D. L. Feng T. Zhang Department of Physics State Key Laboratory of Surface Physics and Advanced Material Laboratory Zhejiang Institute of Photoelectronics and Zhejiang Institute for Advanced Light Source Beijing National Laboratory for Condensed Matter Physics School of Physical Sciences National Laboratory of Solid State Microstructures and Department of Physics Interdisciplinary Materials Research Center School of Materials Science and Engineering Dongguan Guangdong 523808 China Nanjing 210093 China Jiangsu Physical Science Research Center Nanjing 210093 China New Cornerstone Laboratory National Synchrotron Radiation Laboratory and School of Nuclear Science and Technology Hefei National Laboratory Hefei 230088 China Shanghai Research Center for Quantum Sciences Shanghai 201315 China

Vortex pinning is a crucial factor that determines the critical current of practical superconductors and enables their diverse applications. However, the underlying mechanism of vortex pinning has long been elusive, lacking a clear microscopic explanation. Here, using high-resolution scanning tunneling microscopy, we studied single vortex pinning induced by point defect in layered FeSe-based superconductors. We found the defect-vortex interaction drives low-energy vortex bound states away from EF, creating a “mini” gap that effectively lowers the system energy and enhances pinning. By measuring the local density of states, we directly obtained the elementary pinning energy and estimated the pinning force via the spatial gradient of pinning energy. The results are consistent with bulk critical current measurement. Furthermore, we showed that a general microscopic quantum model incorporating defect-vortex interaction can naturally capture our observation. It suggests that the local pairing near pinned vortex core is actually enhanced compared to unpinned vortex, which is beyond the traditional understanding that nonsuperconducting regions pin vortices. Our study thus unveils a general microscopic mechanism of vortex pinning in superconductors and provides insights for enhancing the critical current of practical superconductors.

关键词： Vortices in superconductors BCS theory Bogoliubov-de Gennes equations Scanning tunneling microscopy Scanning tunneling spectroscopy Transport techniques

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Strain-induced in-plane anomalous Hall effect in single-crystalline Fe(211) films

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Physical Review B 2025年第17期111卷 174423-174423页

作者： Haoran Chen Yongwei Cui Tong Wu Yunzhuo Wu Ke Pei Yixuan Wang Yue Chen Hongyue Xu Renchao Che Zhe Yuan Cong Xiao Yizheng Wu Department of Physics Applied Surface Physics State Key Laboratory Fudan University Shanghai 200433 China Laboratory of Advanced Materials Shanghai Key Lab of Molecular Catalysis and Innovative Materials Academy for Engineering and Technology Fudan University Shanghai 200438 China Institute for Nanoelectronic Devices and Quantum Computing Fudan University Shanghai 200433 China Interdisciplinary Center for Theoretical Physics and Information Science (ICTPIS) Fudan University Shanghai 200433 China Center for Advanced Quantum Studies and Department of Physics Beijing Normal University Beijing 100875 China Shanghai Research Center for Quantum Sciences Shanghai 201315 China Shanghai Key Laboratory of Metasurfaces for Light Manipulation Fudan University Shanghai 200433 China

We present a systematic investigation of the in-plane anomalous Hall effect (IPAHE) induced by the in-plane magnetization in single-crystalline Fe(211) films epitaxially grown on MgO(110) substrates. A single-crystal domain in the Fe(211) films is well controlled using slightly miscut substrates, enabling precise observation of the IPAHE. A pronounced IPAHE is observed when the magnetization aligns along the Fe[1¯11] direction, with the in-plane anomalous Hall resistivity ρIPAH reaching its maximum value and showing independence from the current direction. This behavior aligns with phenomenological models dictated by crystalline symmetry and likely stems from epitaxial strain in the films. The scaling relationship between ρIPAH and the longitudinal resistivity across a range of temperatures and film thicknesses is systematically analyzed. A nonmonotonic temperature dependence of ρIPAH indicates a complex interplay between extrinsic and intrinsic mechanisms. Our study provides experimental insight into the mechanisms underlying IPAHE and highlights the potential for tailoring IPAHE through film thickness and strain engineering.

关键词： Magnetization

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Uniformly Dispersed Carbide Reinforcements in the Medium-Entropy High-Speed Steel Coatings by Wide-Band Laser Cladding

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Acta Metallurgica Sinica(English Letters) 2020年第8期33卷 1145-1150页

作者： Bang Dou Hui Zhang Jia-Hao Zhu Ben-Qi Xu Zi-Yi Zhou Ji-Li Wu Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials(Ministry of Education) Anhui University of TechnologyMa'anshan 243002China School of Materials Science and Engineering Anhui University of TechnologyMa'anshan 243002China School of Materials Science and Engineering Jiangsu UniversityZhenjiang 212013China

A medium-entropy high-speed steel(ME-HSS)coating with the 76 at.%of Fe and multiple alloying elements was prepared by the wide-band laser *** with the commercial W6 Mo5 Cr4 V2(M2)HSS coating which contains a large number of network lamellar M2 C-type carbides along the grain boundaries,the presented ME-HSS coating has a high quantity of fi ner and more uniformly dispersed M C-type carbides;on the other hand,the coating has less retained austenite and much lower brittleness as well as similar secondary hardening eff ect and tempering hardness.

关键词： High-speed steel Medium-entropy alloy Phase selection Laser cladding

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