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Design of bifunctional single-atom catalysts NiSA/ZIF-300 for CO_(2) conversion by ligand regulation strategy

Nano Research 2024年第5期17卷 3827-3834页

作者： Wengang Fu Yapei Yun Hongting Sheng Xiaokang Liu Tao Ding Shuxian Hu Tao Yao Binghui Ge Yuanxin Du Didier Astruc Manzhou Zhu Department of Chemistry and Centre for Atomic Engineering of Advanced Materials Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of EducationCollege of Materials Science and EngineeringInstitutes of Physical Science and Information Technology and Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized MaterialsAnhui UniversityHefei 230601China Universitéde Bordeaux ISMUMR CNRS N°5255351 Cours de La Libération33405 Talence CedexFrance National Synchrotron Radiation Laboratory University of Science and Technology of ChinaHefei 230026China Department of Physics University of Science and Technology BeijingBeijing 100083China Anhui Tongyuan Environment Energy Saving Co. LtdHefei 230041China

Carbon-supported noble-metal-free single-atom catalysts(SACs)have aroused widespread interest due to their green chemistry aspects and excellent ***,we propose a“ligand regulation strategy”and achieve the successful fabrication of bifunctional SAC/MOF(MOF=metal-organic framework)nanocomposite(abbreviated NiSA/ZIF-300;ZIF=ZIF-8)with exceptional catalytic performance and *** designed NiSA/ZIF-300 has a planar interfacial structure with the Ni atom,involving one S and three N atoms bonded to Ni(Ⅱ),fabricated by controllable pyrolysis of volatile Ni-S *** CO_(2) cycloaddition to styrene epoxide,NiSA/ZIF-300 exhibits ultrahigh activity(turnover number(TON)=1.18×105;turnover frequency(TOF)=9830 molSC·mol_(Ni)^(-1)·h^(-1);SC=styrene carbonate)and durability at 70℃ under 1 atm CO_(2) pressure,which is much superior to Ni complex/ZIF,NiNP/ZIF-300,and most reported *** study offers a simple method of bifunctional SAC/MOF nanocomposite fabrication and usage,and provides guidance for the precise design of additional original SACs with unique catalytic properties.

关键词： single atom catalyst bifunctional CO_(2)conversion cycloaddition

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The principle and amelioration of lithium plating in fast-charging lithium-ion batteries

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Journal of Energy Chemistry 2024年第10期97卷 453-459,I0009页

作者： Yi Yang Xia-Lin Zhong Lei Xu Zhuo-Lin Yang Chong Yan Jia-Qi Huang School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China Yangtze River Delta Graduate School of Beijing Institute of Technology Jiaxing 314003ZhejiangChina

Fast charging is restricted primarily by the risk of lithium(Li)plating,a side reaction that can lead to the rapid capacity decay and dendrite-induced thermal runaway of lithium-ion batteries(LIBs).Investigation on the intrinsic mechanism and the position of Li plating is crucial to improving the fast rechargeability and safety of ***,we investigate the Li plating behavior in porous electrodes under the restricted transport of Li^(+).Based on the theoretical model,it can be concluded that the Li plating on the anodeseparator interface(ASI)is thermodynamically feasible and kinetically ***,the prior deposition of metal Li on the ASI rather than the anode-current collector interface(ACI)is verified *** order to facilitate the transfer of Li^(+)among the electrode and improve the utilization of active materials without Li plating,a bilayer asymmetric anode composed of graphite and hard carbon(GH)is *** and simulation results suggest that the GH hybrid electrode homogenizes the lithiated-rate throughout the electrode and outperforms the pure graphite electrode in terms of the rate performance and inhibition of Li *** work provides new insights into the behavior of Li plating and the rational design of electrode structure.

关键词： Graphite Hard carbon Fast charging Lithium plating Lithium-ion batteries

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A flexible solid polymer electrolyte enabled with lithiated zeolite for high performance lithium battery

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Nano Research 2023年第7期16卷 9443-9452页

作者： Zhiyu Ding Qiming Tang Qi Zhang Penghui Yao Xingjun Liu Junwei Wu Shenzhen Key Laboratory of Advanced Materials Department of Materials Science and EngineeringHarbin Institute of Technology(Shenzhen)Shenzhen 518055China Maryland Energy Innovation Institute University of MarylandCollege ParkMD 20742USA Department of Chemical and Metallurgical Engineering Aalto UniversityKemistintie 1Aalto FI-00076Finland

Solid-state lithium batteries using composite polymer electrolytes(CPEs)have attracted much attention owing to their higher safety compared to liquid electrolytes and flexibility compared to ceramic ***,their unsatisfactory lithium-ion conductivity still limits their ***,a high ion conductive CPE with multiple continuous lithium pathways is *** new electrolyte consists of poly(vinylidene fluorideco-hexafluoropropylene)(PVDF-HFP)and lithiated X type zeolite(Li-X),which possesses a high ionic conductivity(1.98×10^(-4)S/cm),high lithium transference number(t_(Li^(+))=0.55),wide electrochemical window(4.7 V),and excellent stability against the lithium *** functional theory(DFT)calculation confirms that the Lewis acid sites in zeolite can graft with N,N-dimethylformamide(DMF)and PVDF-HFP chains,resulting in decreased crystallinity of polymer and providing rapid Li+transmission *** used in a full cell,the solid Li|Li-X-3%|LiFePO_(4) cell displays excellent cycling stability and rate performance at room temperature and 60℃.Furthermore,pouch cells with the Li-X-3%electrolyte exhibit brilliant safety under extreme conditions,such as folding and ***,this proposed zeolite-PVDF-HFP CPE represents a promising potential in the application of making a safer,higher performing,and flexible solid-state lithium battery.

关键词： solid-state lithium batteries composite polymer electrolytes zeolite poly(vinylidene fluorideco-hexafluoropropylene)(PVDF-HFP) flexible

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Reuse of sodium–doped iridium oxide nanoparticles as a bio–stimulating electrode by a chemical and electrochemical recovery process

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Ceramics International 2024年第4期50卷 6220-6228页

作者： Tso, Kuang-Chih Chen, Chieh-Hsuan Chen, Po-Chun Li, Shao-Sian Chen, Jeng-Lung Ohta, Jun Wu, Pu-Wei Division of Materials Science Graduate School of Science and Technology Nara Institute of Science and Technology Nara630-0192 Japan Graduate Degree Program of Science and Technology of Accelerator Light Source National Yang Ming Chiao Tung University Hsinchu300 Taiwan Department of Materials Science and Engineering National Yang Ming Chiao Tung University Hsinchu300 Taiwan Institute of Materials Science and Engineering National Taipei University of Technology Taipei106 Taiwan National Synchrotron Radiation Research Center Hsinchu300 Taiwan

A sequential chlorination and electrochemical reduction process is demonstrated to convert Na–doped iridium oxide nanoparticles into useful IrIIICl63−(aq) serving as the precursor for the fabrication of bio–stimulating electrode. The Na–doped iridium oxide nanoparticles are treated in 35 wt% hydrochloric acid at 70 °C for 18 h to form IrIVCl62−(aq) with pH of 0.3, so the latter could be readily reduced to IrIIICl63−(aq) at a potentiostatic mode of 0.6 V (vs. SCE). The oxidation state and the nature of complexing ligands for the regenerated IrIIICl63− and IrIVCl62−, as well as commercially available IrIIICl63− are validated by X–ray Absorption Spectroscopy. UV–Vis profiles of regenerated IrIVCl62−(aq) are recorded and the absorbance at 487 nm signal is benchmarked against that of standard IrIVCl62−(aq) to obtain the effective regeneration ratio of 68.6%. X–ray diffraction patterns of Na–doped iridium oxide nanoparticles before and after the annealing treatment indicate the amorphous structure facilitates the chlorination step. The regenerated IrIIICl63− is reused to synthesize Na–doped iridium oxide thin film serving as a bio–stimulating electrode for implantable bio–electronics. The regenerated Na–doped iridium oxide thin film reveals a charge-storage capacity of 0.32 mC/cm2-nm and impressive stability that are comparable to those of fresh Na–doped iridium oxide thin film derived from commercially available IrIIICl63−. © 2023 Elsevier Ltd and Techna Group S.r.l.

关键词： Transition metal oxides

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Effect of alloy compositions and aging conditions on tensile properties of cold-rolled Al-Mg-Si alloys

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Keikinzoku/Journal of Japan Institute of Light Metals 2023年第12期73卷 592-597页

作者： Fukuzawa, Hiroki Ishii, Yuki Kobayashi, Junya Kobayashi, Equo Ohnuma, Masato Kuramoto, Shigeru Itoh, Goroh Graduate School of Science and Engineering Ibaraki University 4-12-1 Nakanarusawa-cho Ibaraki Hitachi-shi316-8511 Japan Department of Materials Science and Engineering School of Materials and Chemical Technology Tokyo Institute of Technology Tokyo Meguro-ku Japan Division of Quantum Science and Engineering Faculty of Engineering Centre for Advanced Research of Energy and Materials Hokkaido University Hokkaido Sapporo-shi Japan

Tensile properties have been evaluated for four kinds of Al-Mg-Si base alloys which were cold rolled by 90% and subsequently aged for 1 min, 30 min, 18 h at 170°C. To study the effect of alloy compositions and aging conditions on deformation behavior, fracture surface observations and strain distribution analysis during tensile deformation were performed. Strain distribution in the tensile specimens was evaluated by digital image correlation method. The ductility in the specimens aged for 1 min and 30 min after cold rolling was improved due to increase in both uniform and local elongation. All the specimens showed ductile fracture, while the specimen added with 0.71%Fe showed slightly lower ductility. The addition of copper improved strength without deteriorating ductility. The relation between mechanical properties and microstructure is discussed to obtain basic information required to improve strength and ductility of Al-Mg-Si alloys. © 2023 The Japan Institute of Light Metals.

关键词： Silicon alloys

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Graphene Bridge Heterostructure Devices for Negative Differential Transconductance Circuit Applications

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Nano-Micro Letters 2023年第2期15卷 161-171页

作者： Minjong Lee Tae Wook Kim Chang Yong Park Kimoon Lee Takashi Taniguchi Kenji Watanabe Min‑gu Kim Do Kyung Hwang Young Tack Lee Department of Electrical and Computer Engineering Inha UniversityIncheon 22212Republic of Korea Department of Materials Science and Engineering The University of Texas at DallasRichardsonTX 75080USA Center for Opto‑Electronic Materials and Devices Post‑Silicon Semiconductor InstituteKorea Institute of Science and Technology(KIST)Seoul 02792Republic of Korea Department of Physics Kunsan National UniversityGunsan 54150Republic of Korea Advanced Materials Laboratory National Institute for Materials ScienceTsukuba 305‑0044Japan Department of Information and Communication Engineering Inha UniversityIncheon 22212Republic of Korea Division of Nanoscience and Technology KIST SchoolUniversity of Science and Technology(UST)Seoul 02792Republic of Korea Department of Electronic Engineering Inha UniversityIncheon 22212Republic of Korea

Two-dimensional van der Waals(2D vdW)material-based heterostructure devices have been widely studied for high-end electronic applications owing to their heterojunction *** this study,we demonstrate graphene(Gr)-bridge heterostructure devices consisting of laterally series-connected ambipolar semiconductor/Gr-bridge/n-type molybdenum disulfide as a channel material for field-effect transistors(FET).Unlike conventional FET operation,our Gr-bridge devices exhibit nonclassical transfer characteristics(humped transfer curve),thus possessing a negative differential *** phenomena are interpreted as the operating behavior in two series-connected FETs,and they result from the gate-tunable contact capacity of the Gr-bridge ***-value logic inverters and frequency tripler circuits are successfully demonstrated using ambipolar semiconductors with narrow-and wide-bandgap materials as more advanced circuit applications based on non-classical transfer ***,we believe that our innovative and straightforward device structure engineering will be a promising technique for future multi-functional circuit applications of 2D nanoelectronics.

关键词： Graphene bridge Heterostructure device Non-classical transfer characteristics Multi-value logic inverter Frequency tripler

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Impact of alloy-like phase on energy loss mitigation in multi-component organic photovoltaics

Aggregate

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Aggregate 2024年第4期5卷 339-348页

作者： Xiangyue Kong Lingling Zhan Zhongjie Li Yaxin Yang Yuhao Liu Huayu Qiu Xiaokang Sun Hanlin Hu Rui Sun Jie Min Shouchun Yin Weifei Fu Hongzheng Chen Key Laboratory of Organosilicon Chemistry and Materials Technology of Ministry of Education College of MaterialsChemistry and Chemical EngineeringHangzhou Normal UniversityHangzhouP.R.China Hoffmann Institute of Advanced Materials Shenzhen Polytechnic UniversityShenzhenP.R.China The Institute for Advanced Studies Wuhan UniversityWuhanP.R.China State Key Laboratory of Silicon and Advanced Semiconductor Materials Department of Polymer Science and EngineeringZhejiang UniversityHangzhouP.R.China

The multi-component strategy has proven effective in advancing the performance of organic photovoltaics(OPVs),enhancing photocurrent andfill factor through spectral complementarity and morphology ***,the open-circuit voltage(VOC)mechanism in multi-component systems lacks systematic *** this study,we explore the influence of alloy-like phases on energy level distribution and energy loss mechanisms in multi-component *** modulation of donor alloy-like phases maintains the original intermolecular stack-ing,enhances component compatibility,reduces acceptor aggregation,and improves acceptor phase purity,mitigating non-radiative recombination ***,suitable alloy-like phase modulation elevates charge transfer(CT)states,reducing the gap between CT and local exciton state,lowering reorganization energy,and alleviating radiative recombination loss below the *** synergistic optimization(layer-by-layer method with solid additive),ternary devices based on Y6 acceptor achieve a notable 19.41%power conversion efficiency,offering new insights for the analysis of the energy loss of the multi-component OPVs.

关键词： alloy-like phase charge transfer state energy loss high efficiencies multi-donors

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Facile synthesis of accordion-like porous carbon from waste PET bottles-based MIL-53(Al)and its application for high-performance Zn-ion capacitor

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Green Energy & Environment 2024年第7期9卷 1138-1150页

作者： Jiaxin Li Shuai Zhang Yumeng Hua Yichao Lin Xin Wen Ewa Mijowska Tao Tang Xuecheng Chen Rodney S.Ruoff Faculty of Chemical Technology and Engineering West Pomeranian University of TechnologyPiastow Ave.4271-065SzczecinPoland Key State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022China School of Safety Engineering China University of Mining and TechnologyXuzhou221116China Institute of Advanced Electrical Materials Qingdao University of Science and TechnologyQingdao266042China Institute for Basic Science Center for Multiple Dimensional Carbon Materials Ulsan44919Republic of Korea Department of Chemistry Ulsan National Institute of Science and Technology(UNIST)Ulsan44919Republic of Korea Department of Materials Science and Engineering Ulsan National Institute of Science and Technology(UNIST)Ulsan44919Republic of Korea School of Energy and Chemical Engineering Ulsan National Institute of Science and Technology(UNIST)Ulsan44919Republic of Korea

It is of great scientific and economic value to recycle waste poly(ethylene terephthalate)(PET)into high-value PET-based metal organic frameworks(MOFs)and further convert it into porous carbon for green energy storage *** the present study,a facile and costeffective hydrothermal process was developed to direct recycle waste PET bottles into MIL-53(Al)with a 100% conversation,then the MOFderived porous carbon was assembled into electrodes for high-performance *** results indicated that the as-synthesized carbon exhibited high SSA of 1712 m^(2)g^(-1)and unique accordion-like structure with hierarchical *** to these advantageous characters,the assembled three-electrode supercapacitor displayed high specific capacitances of 391 F g^(-1)at the current density of 0.5 A g^(-1)and good rate capability of 73.6% capacitance retention at 20 A g^(-1)in 6 mol L^(-1)KOH ***,the assembled zinc ion capacitor still revealed outstanding capacitance of 335 F g^(-1)at 0.1 A g^(-1),excellent cycling stability of 92.2% capacitance retention after 10000 cycles and ultra-high energy density of 150.3 Wh kg^(-1)at power density of 90 W kg^(-1)in 3 mol L^(-1)ZnSO_(4)*** is believed that the current work provides a facile and effective strategy to recycle PET waste into high-valuable MOF,and further expands the applications of MOF-derived carbons for high-performance energy storage devices,so it is conducive to both pollution alleviation and sustainable economic development.

关键词： PET Recycling Porous carbon Supercapacitor Energy storage

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Se-substituted pentamethine cyanine for anticancer photodynamic therapy mediated using the hot band absorption process

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Chinese Chemical Letters 2024年第12期35卷 382-387页

作者： Wenkai Liu Yanxian Hou Weijian Liu Ran Wang Shan He Xiang Xia Chengyuan Lv Hua Gu Qichao Yao Qingze Pan Zehou Su Danhong Zhou Wen Sun Jiangli Fan Xiaojun Peng State Key Laboratory of Fine Chemicals Frontiers Science Center for Smart Materials Oriented Chemical EngineeringDalian University of TechnologyDalian 116024China Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing Yantai 264006China Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced StudyThe Hong Kong University of Science and TechnologyHong Kong 999077China

Photodynamic therapy(PDT)is a promising cancer treatment modality owing to its high spatiotempora selectivity and noninvasive ***,conventional photosensitizers(PSs)used in PDT are respon sive only to visible light,which makes them unsuitable for tissue *** this study,we propose a PS based on hot band absorption(HBA),which can be triggered by anti-Stokes light at 808 nm via a one-photon *** introduction of selenium(Se)into pentamethine cyanine(Secy5)not only facili tates intersystem crossing for reactive oxygen species(ROS)production but also enhances HBA efficiency thereby prolonging the excitation *** addition,Secy5 demonstrates excellent biocompatibility unlike its I-substituted counterpart(Icy5),and produces not only^(1)O_(2)but also O_(2)^(·-),making it a desirable candidate for treating hypoxic solid *** to the results of in vivo and in vitro experiments Secy5 can efficiently inhibit cancer cell growth via anti-Stokes activation processes,thereby providing a novel approach to design anti-Stokes excitation PSs for anticancer treatment.

关键词： Cyanine dyes Hot band absorption Anti-Stokes Photodynamic therapy Anticancer treatment

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Quantitative Understanding of Solute Concentration Distribution by Microsegregation during Solidification

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Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan 2025年第3期111卷 75-84页

作者： Kawanishi, Sakiko Terashima, Shingo Tsukahara, Yuki Sukenaga, Sohei Esaka, Hisao Shibata, Hiroyuki Department of Energy Science and Technology Graduate School of Energy Science Kyoto University Japan Department of Metallurgy Graduate School of Engineering Tohoku University Japan Institute of Multidisciplinary Research for Advanced Materials Tohoku University Japan Graduate School of Engineering Osaka University Japan

Microsegregation of solute components during the solidification process causes solute pile-up in the liquid phase, which strongly affects the formation behavior of inclusions. However, there is no quantitative evaluation of solute concentration distribution during dendritic growth. In this study, we established an in-situ observation method for quantitative evaluation of solute concentration distribution using model materials with fluorescent reagents to clarify how the solute pile-up progresses due to microsegregation. In addition to evaluating the physical properties of the model materials necessary for this study, a quantitative evaluation of solute concentration distribution during dendritic growth was successfully achieved. Numerical analysis, taking into account the equilibrium partition of solute components and solute diffusion in each phase, reproduced the measured solute concentration distribution in the liquid phase. Thus, the solute concentration distribution was evaluated by the actual measurement and numerical analysis, and it was clarified that a relatively simple model can represent the progress of microsegregation. © 2025 Iron and Steel Institute of Japan. All rights reserved.

关键词： materials properties

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