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A green repair pathway for spent spinel cathode material:Coupled mechanochemistry and solid-phase reactions

escience 2023年第3期3卷 69-78页

作者： Jiao Lin Xu Chen Ersha Fan Xiaodong Zhang Renjie Chen Feng Wu Li Li Beijing Key Laboratory of Environmental Science and Engineering School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Advanced Technology Research Institute Beijing Institute of TechnologyJinan 250300China Collaborative Innovation Center of Electric Vehicles in Beijing Beijing 100081China

A way of directly repairing spent lithium-ion battery cathode materials is needed in response to environmental pollution and resource *** this work,we report a green repair method involving coupled mechano-chemistry and solid-state reactions for spent lithium-ion *** the ball-milling repair process,an added manganese source enters into the degraded LiMn_(2)O_(4)(LMO)crystal structure in order to fill the Mn vacancies formed by Mn deficiency due to the Jahn–Teller effect,thereby repairing the LMO's chemical *** added carbon source acts not only as a lubricant but also as a conductor to improve the material's electrical ***,mechanical force reduces the crystal size of the LMO particles,increasing the amount of active sites for electrochemical ***–Teller distortion is successfully suppressed by cation disorder in the LMO *** cycling stability and rate performance of the repaired cathode material are thereby greatly improved,with the discharge specific capacity being more than twice that of commercial *** proposed solid-state mechanochemical in situ repair process,which is safe for the environment and simple to use,may be extended to the repair of other waste materials without consuming highly acidic or alkaline chemical reagents.

关键词： Degraded LiMn_(2)O_(4) Mechanochemistry Solid-state reactions Green repair pathway Environmentally benign

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Exploration of Mixed Polyanionic Compound for Potential High-Voltage Cathode Materials in Sodium-Ion Batteries

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CCS Chemistry 2025年第2期7卷 554-563页

作者： Tianyi Song Nanzhong Wu Xiao Zheng Xinyuan Zhang Shu Guo Qi Yan Wenjiao Yao Yongbing Tang Advanced Energy Storage Technology Research Center Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055 Shenzhen College of Advanced Technology University of Chinese Academy of SciencesShenzhen 518055 Tianjin Key Laboratory of Functional Crystal Materials Institute of Functional CrystalsTianjin University of TechnologyTianjin 300384 Shenzhen Institute for Quantum Science and Engineering Southern University of Science and TechnologyShenzhen 518055 International Quantum Academy Shenzhen 518048 Shenzhen Key Laboratory of Energy Materials for Carbon Neutrality Shenzhen 518055

Mixed polyanionic compounds are potential cathode materials for sodium-ion batteries(SIBs).Herein,considering the advantages of the strong inductive effect of sulfate and the diverse,flexible coordination modes of oxalate,we systematically explored mixed sulfate-oxalate systems and obtained three sodium-contained polyanionic ***,the novel three-dimensional Na_(2)Co(C(2)O_(4))(SO_(4))·xH_(2)O(x=1-1.5)was found to be a promising cathode material for SIBs with good electrochemical activity at high *** present study sets an example of exploring sodium-storage materials in the mixed polyanionic family and provides new insights into designing novel high-voltage cathodes for sodium-based energy storage devices.

关键词： polyanionic compounds sodium-ion batteries cathodes high voltage hydrothermal synthesis

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Platinum modification of metallic cobalt defect sites for efficient electrocatalytic oxidation of 5-hydroxymethylfurfural

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Journal of Energy Chemistry 2025年第2期101卷 463-473,I0010页

作者： Haoyu Zhan Baixue Cheng Yankun Lu Danning Xing Xingshuai Lv Huining Huang Thomas Frauenheim Tao Wang Peng Zhou State Key Laboratory of Bio-fibers and Eco-textiles College of Materials Science and EngineeringCollaborative Innovation Center of Shandong Marine Biobased Fibers and Ecological TextilesInstitute of Marine Biobased MaterialsQingdao UniversityQingdao 266071ShandongChina Shandong Institute of Advanced Technology Jinan 250100ShandongChina College of Chemistry and Chemical Engineering Ocean University of ChinaQingdao 266100ShandongChina Tianjin Key Laboratory of Advanced Functional Porous Materials Institute for New Energy Materials & Low-Carbon TechnologiesSchoolof Materials Science and Engineering Tianjin University of TechnologyTianjin 300384China School of Science Constructor UniversityBremen 28759Germany Beijing Computational Science Research Center Beijing 100193China College of Chemistry and Molecular Engineering Qingdao University of Science and TechnologyQingdao 266042ShandongChina

Co_(3)O_(4)possesses both direct and indirect oxidation effects and is considered as a promising catalyst for the oxidation of 5-hydroxymethylfurfural(HMF).However,the enrichment and activation effects of Co_(3)O_(4)on OH-and HMF are weak,which limits its further *** defect engineering can regulate the electronic structure,optimize the adsorption of intermediates,and improve the catalytic activity by breaking the symmetry of the material,which is rarely involved in the upgrading of *** this work,we prepare Co_(3)O_(4)with metal defects and load the precious metal platinum at the defect sites(PtVco).The results of in-situ characterizatio ns,electrochemical measurements,and theoretical calculations indicate that the reduction of Co-Co coordination number and the formation of Pt-Co bond induce the decrease of electron filling in the antibonding orbitals of Co *** resulting upward shift of the d-band center of Co combined with the characteristic adsorption of Pt species synergically enhances the enrichment and activation of organic molecules and OH species,thus exhibiting excellent HMF oxidation activity(including a lower onset potential(1.14 V)and 19 times higher current density than pure Co_(3)O_(4)at 1.35 V).In summary,this work explores the adsorption enhancement mechanism of metal defect sites modified by precious metal in detail,provides a new option for improving the HMF oxidation activity of cobalt-based materials,broadens the application field of metal defect based materials,and gives an innovative guidance for the functional utilization of metal defect sites in biomass conversion.

关键词： Electrocatalysis Biomass upgrading Metallic defect Coordination environment Adsorption enhancement

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Reactive surface intermediates over Ni-grafted TiO2 nanotube arrays towards hydrogen evolution reaction in alkaline and chloride media

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International Journal of Hydrogen Energy 2023年第81期48卷 31479-31490页

作者： Cheshideh, Hamed Chen, Hsueh-Yu Liao, Kuo-Wei Wang, Kai-Chin Chen, Guan-Cheng Huang, Hsin-Chih Wang, Chen-Hao Department of Materials Science and Engineering National Taiwan University of Science and Technology Taipei106335 Taiwan Global Development Engineering Program National Taiwan University of Science and Technology Taipei106335 Taiwan Advanced Manufacturing Research Center National Taiwan University of Science and Technology Taipei106335 Taiwan

In this study, the Ni nanoparticles grafted TiO2 nanotubes electrode improved by surface reconstruction (s-Ni/TiO2/Ti) shows the facile hydrogen evolution reaction (HER) in the alkaline and chloride solutions. Nickel nanoparticles were electrochemically grafted on the anodic TiO2 nanotubes under different conditions. The heat treatment of TiO2 nanotubes contributes to the enhancement of electrical conductivity and template adherence. The surface reconstruction is indicated to create heterojunction intermediates, Ni(OH)2 and NiOOH, on the surface of Ni nanoparticles. An extremely low overpotential of 126 mV is required for HER on the s-Ni/TiO2/Ti electrode in 1.0 M KOH solution, showing higher activity than Pt/C. Besides, the developed electrode exhibits an overpotential of 127 mV for HER in 1.0 M KOH + 0.5 M NaCl solution. The long-term stability over 100 h suggests a highly active and inexpensive material choice for substituting the precious electrocatalysts in corrosive media such as seawater. © 2023 Hydrogen Energy Publications LLC

关键词： Titanium dioxide

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Ultra-sensitive fluorescence-activated droplet single-cell sorting based on Tetramer-HCR-EvaGreen amplification

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Microsystems & Nanoengineering 2025年第1期11卷 197-209页

作者： Long Chen Yi Xu Lele Zhou Ding Ma Rong Zhang Yifan Liu Xianqiang Mi Shanghai Institute of Microsystem and Information Technology Chinese Academy of SciencesShanghai 200050China Shanghai Advanced Research Institute Chinese Academy of SciencesShanghai 201210China University of Chinese Academy of Sciences Beijing 100049China School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China Shanghai Clinical Research and Trial Center Shanghai 201210China State Key Laboratory of Advanced Medical Materials and Devices ShanghaiTech UniversityShanghai 201210China School of Physics and Optoelectronic Engineering Hangzhou Institute for Advanced Study University of Chinese Academy of SciencesChinese Academy of SciencesHangzhou 310024China

The current single-cell analysis technologies such as fluorescence-activated cell sorting(FACS)and fluorescence-activated droplet sorting(FADS)could decipher the cellular heterogeneity but were constrained by low sorting performance and cell ***,an ultra-sensitive single-cell sorting platform has been developed by integrating the FADS technology with Tetramer-HCR-EvaGreen(THE)fluorescence signal *** THE system produced much higher fluorescence signal than that of the single Tetramer or Tetramer-HCR signal *** application to target MCF-7 cells,the platform exhibited high efficacy and selectivity while maintaining more than 95%cell *** THE-FADS achieved sorting efficiencies of 55.5%and 50.3%with purities of 91%and 85%for MCF-7 cells in PBS solutions and simulated serum samples,*** sorted MCF-7 cells showed similar proliferation together with CK19 and EGFR mRNA expression compared with the control *** established THE-FADS showed the promising prospects to cellular heterogeneity understanding and personalized medicine.

关键词： fluorescence signal amplification personalized medicine single cell sorting decipher cellular heterogeneity cellular heterogeneity ultra sensitive fluorescence activated droplet sorting cell viability tetramer hcr evagreen amplification

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Universal coherent atom-molecule oscillations in the dynamics of the unitary Bose gas near a narrow Feshbach resonance

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Physical Review research 2025年第1期7卷 L012025-L012025页

作者： Ke Wang Zhendong Zhang Shu Nagata Zhiqiang Wang K. Levin Department of Physics and James Franck Institute University of Chicago Chicago Illinois 60637 USA Kadanoff Center for Theoretical Physics University of Chicago Chicago Illinois 60637 USA E. L. Ginzton Laboratory and Department of Applied Physics Stanford University Stanford California 94305 USA Hefei National Research Center for Physical Sciences at the Microscale and School of Physical Sciences University of Science and Technology of China Hefei Anhui 230026 China Shanghai Research Center for Quantum Science and CAS Center for Excellence in Quantum Information and Quantum Physics University of Science and Technology of China Shanghai 201315 China Hefei National Laboratory University of Science and Technology of China Hefei 230088 China

Quench experiments on a unitary Bose gas around a broad Feshbach resonance have led to the discovery of universal dynamics. This universality manifests in the measured atomic momentum distributions, where, asymptotically, a quasiequilibrated metastable state is found in which both the momentum distribution and the timescales are determined by the particle density. In this Letter we present counterpart studies for the case of a very narrow Feshbach resonance of Cs133 atoms with a width of 8.3 mG. In dramatic contrast to the behavior reported earlier, a rapid quench of an atomic condensate to unitarity is observed to ultimately lead to coherent oscillations involving dynamically produced condensed and noncondensed molecules and atoms. The same characteristic frequency, determined by the Feshbach coupling, is observed in all types of particles. To understand these quench dynamics and how these different particle species are created, we develop a beyond Hartree-Fock-Bogoliubov dynamical framework including a type of cross-correlation between atoms and molecules. This leads to quantitative consistency with the measured frequency. Our results, which can be applied to the general class of bosonic superfluids associated with narrow Feshbach resonances, establish a alternate paradigm for universal dynamics dominated by quantum many-body interactions.

关键词： Atoms

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Testing phaeophytinization as an index of ozone stress in trees

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Journal of Forestry research 2023年第4期34卷 1167-1174页

作者： Evgenios Agathokleous Mitsutoshi Kitao Takayoshi Koike School of Applied Meteorology Nanjing University of Information Science and Technology(NUIST)Nanjing 210044People’s Republic of China Research Faculty of Agriculture Hokkaido UniversitySapporoHokkaido 060-8589Japan Hokkaido Research Center Forestry and Forest Products Research Institute(FFPRI)Sapporo 062-8516Japan

Ground-level ozone pollution is a menace for vegetation in the northern hemisphere,limiting photosynthetic pigments and suppressing photosynthesis in trees and other types of *** is the process of converting chlorophylls into phaeophytins,for example by acidifi *** is a highly oxidizing molecule and well known to degrade chlorophylls;however,the eff ect of ozone on phaeophytinization in leaves of higher plants is largely *** reveal ozone eff ect on phaeophytinization and evaluate the potential of phaeophytinization as an index of ozone stress in trees,the absorbance at the optical density of 665 nm was measured before(OD_(665))and after(OD_(665a))acidifi cation in three independent experiments with nearly 30 conditions of ozone *** current ambient and elevated ozone widely aff ected phaeophytinization,as indicated by decreases or increases in the phaeophytinization quotient OD_(665)/OD_(665a).These eff ects were commonly moderate to large in magnitude and practically signifi cant,and occurred even in ozone-asymptomatic *** emerges that the ozone eff ect on phaeophytinization is bimodal,likely depending on the intensity of ozone *** results indicate a promising feature of OD_(665)/OD_(665a)as a thorough index of ozone stress in the future,but further studies are needed to reveal the underlying biochemical mechanisms of the bimodal eff ect on phaeophytinization.

关键词： Biological stress Chemical eff ect Chlorophyll oxidation Environmental stimuli Phaeophytin

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advanced liquid crystal-based switchable optical devices for light protection applications:principles and strategies

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Light(science & Applications) 2023年第4期12卷 512-541页

作者： Ruicong Zhang Zhibo Zhang Jiecai Han Lei Yang Jiajun li Zicheng Song Tianyu Wang Jiaqi Zhu National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of TechnologyHarbin 150080China Research Center of Analysis and Measurement Harbin Institute of TechnologyHarbin 150080China School of Energy Science&Engineering Harbin Institute of TechnologyHarbin 150001China Key Laboratory of Micro-systems and Micro-structures Manufacturing Ministry of EducationHarbin 150080China

With the development of optical technologies,transparent materials that provide protection from light have received considerable attention from *** important channels for external light,windows play a vital role in the regulation of light in buildings,vehicles,and *** is a need for windows with switchable optical properties to prevent or attenuate damage or interference to the human eye and light-sensitive instruments by inappropriate optical *** this context,liquid crystals(LCs),owing to their rich responsiveness and unique optical properties,have been considered among the best candidates for advanced light protection *** this review,we provide an overview of advances in research on LC-based methods for protection against ***,we introduce the characteristics of different light sources and their protection ***,we introduce several classes of light modulation principles based on liquid crystal materials and demonstrate the feasibility of using them for light *** addition,we discuss current light protection strategies based on liquid crystal materials for different ***,we discuss the problems and shortcomings of current *** propose several suggestions for the development of liquid crystal materials in the field of light protection.

关键词： optical crystal liquid

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Unified transmission electron microscopy with the glovebox integrated system for investigating air-sensitive two-dimensional quantum materials

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The Innovation 2025年第1期6卷 88-101,87页

作者： Qishuo Yang Xingxing Li Ludan Zhao Gang Wang Zenglong Guo Kangdi Niu Shaolong Jiang Fuchen Hou Junhao Lin Department of Physics and Guangdong Basic Research Center of Excellence for Quantum Science Southern University of Science and Technology(SUSTech)Shenzhen 518055China School of Mechanical and Mining Engineering The University of QueenslandBrisbaneQLD 4072Australia Quantum Science Center of Guangdong-Hong Kong-Macao Greater Bay Area(Guangdong) Shenzhen 518045China Guangdong Provincial Key Laboratory of Advanced Thermoelectric Materials and Device Physics Southern University of Science and TechnologyShenzhen 518055China

Transmission electron microscopy(TEM)is an indispensable tool for elucidating the intrinsic atomic structures of materials and provides deep insights into defect dynamics,phase transitions,and nanoscale structural *** numerous intriguing physical properties have been revealed in recently discovered two-dimensional(2D)quantummaterials,many exhibit significant sensitivity towater and oxygen under ambient *** inherent instability complicates sample preparation for TEM analysis and hinders accurate property *** review highlights recent technical advancements to preserve the intrinsic structures of water-and oxygen-sensitive 2D materials for atomic-scale characterizations.A critical development discussed in this review is implementing an inert gas-protected glovebox integrated system(GIS)designed specifically for TEM *** addition,this review emphasizes air-sensitivematerials such as 2D transitionmetal dichalcogenides,transition metal dihalides and trihalides,and low-dimensional magnetic materials,demonstrating breakthroughs in overcoming their environmental ***,the progress in TEM characterization enabled by the GIS is analyzed to provide a comprehensive overview of state-of-the-art methodologies in this rapidly advancing field.

关键词： transmission electron microscopy tem transitionmetal dichalcogenides elucidating intrinsic atomic structures materials glovebox integrated system atomic scale characterizations air sensitive two dimensional quantum materials unified transmission electron microscopy inert gas protected

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Surface promotion of copper nanoparticles with alumina clusters derived from layered double hydroxide accelerates CO_(2)reduction to ethylene in membrane electrode assemblies

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Nano research 2023年第4期16卷 4685-4690页

作者： Jie Zhang Xinnan Mao Binbin Pan Jie Xu Xue Ding Na Han Lu Wang Yuhang Wang Yanguang Li Institute of Functional Nano and Soft Materials(FUNSOM) Soochow UniversitySuzhou 215123China Jiangsu Key Laboratory for Advanced Negative Carbon Technologies Soochow UniversitySuzhou 215123China Macao Institute of Materials Science and Engineering(MIMSE) MUST-SUDA Joint Research Center for Advanced Functional MaterialsMacao University of Science and TechnologyMacao 999078China

Electrochemical CO_(2)reduction has the vast potential to neutralize CO_(2)emission and valorizes this greenhouse gas into chemicals and fuels under mild *** commercial realization hinges on catalyst innovation as well as device engineering for enabling reactions at industrially relevant *** has been widely examined for the selective production of multicarbon chemicals particularly ethylene,while there is still a substantial gap between the expected and the *** this work,we report that the surface promotion of copper with alumina clusters is a viable strategy to enhance its electrocatalytic ***-promoted Cu catalyst is derived from Cu-Al layered double hydroxide nanosheets after alkali etching and cathodic *** can catalyze CO_(2)to ethylene and multicarbon products with great selectivity and stability far superior to pristine copper in both an H-cell and a zero-gap membrane electrode assembly(MEA)*** surface promotion effect is understood via computational simulations showing that alumina clusters can stabilize key reaction intermediates(*COOH and*OCCOH)along the reaction pathway.

关键词： electrochemical CO_(2)reduction surface promotion layered double hydroxide ethylene membrane electrode assembly

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