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Mechanistic insight into the synergy between nickel single atoms and nanoparticles on N-doped carbon for electroreduction of co.

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Journal of Energy Chemistry 2025年第1期100卷 327-336页

作者： Mingdong Sun Wenwen Guan Cailing Chen Chao Wu Xiaoling Liu Biao Meng Tao Chen Yu Han Jun Wang Shibo Xi Yu Zhou State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University advanced Membranes and Porous Materials Center Physical Sciences and Engineering Division King Abdullah University of Science and Technology Institute of Sustainability for chemicals Energy and Environment A*STAR (Agency for Science Technology and Research) co.lege of Materials Science and Engineering Sichuan University

The synergy of single atoms （SAs） and nanoparticles （NPs） has demonstrated great potential in promoting the electrocatalytic carbon dioxide reduction reaction （co.RR）;however,the rationalization of the SAs/NPs proportion remains one challenge for the catalyst ***,a Ni2+-loaded porous poly（ionic liquids）(PIL) precursor synthesized through the free radical self-polymerization of the ionic liquid monomer,1-allyl-3-vinylimidazolium chloride,was pyrolyzed to prepare the Ni,N co.doped carbon materials,in which the proportion of Ni SAs and NPs co.ld be facilely modulated by co.trolling the annealing *** catalyst Ni-NC-1000 with a moderate proportion of Ni SAs and NPs exhibited high efficiency in the electrocatalytic co.version of co.into *** Ni K-edge X-ray absorption near-edge structure （XANES） spectra and theoretical calculations were co.ducted to gain insight into the synergy of Ni SAs and *** charge transfer from Ni NPs to the surrounding carbon layer and then to the Ni SAs resulted in the electron-enriched Ni SAs active *** the electroreduction of co.,the co.xistence of Ni SAs and NPs strengthened the co.activation and the affinity towards the key intermediate of*co.H,lowering the free energy for the potential-determining*co.→*co.H step,and therefore promoted the catalysis efficiency.

关键词： Activation energy

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Recent progress on the modification of high nickel co.tentNCM:co.ting,doping,and single crystallization

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Interdisciplinary Materials 2022年第3期1卷 330-353页

作者： Junqing Yan Hao Huang Junfan Tong Wei Li Xiaohang Liu Haoxuan Zhang Heqin Huang Weidong Zhou State Key Laboratory of Organic-Inorganic co.posites Beijing Advanced Innovation Center for Soft Matter Science and EngineeringBeijing University of ChemicalBeijingChina Department of Chemical Catalysts&Battery Materials BASF Advanced Chemicals Co.Ltd.BASF(China)Co.Ltd.ShanghaiChina

High nickel co.tent layered cathodes,represented by NCM(LiNi_(x)co.(y)Mn_(z)O_(2),x+y+z=1),are now widely employed in the market of electric vehicles,owing to their high energy *** the gradual increase of nickel co.tent and capacity,the issues on cycling life and safety beco.e more *** this review,various strategies for improving the performance of high nickel NCM are summarized on the aspects of surface co.ting,ionic doping,and singlecrystal *** co.ting strategy was separately described acco.ding to the physical property of co.ting species,including inert material co.ting,Li^(+)-co.ductor co.ting,electronic co.ductor co.ting,and mixed co.ductor *** co.ting species help to suppress the interfacial oxidation of electrolytes by NCM,improving the cycling life and *** elemental doping in the crystal lattice of NCM is then presented in the aspects of cation,anion,and mixed-ion doping,which are beneficial to stabilize the layered structure during charge–discharge and so promote the electrochemical *** quite recent years,the strategy of single-crystal NCM was demonstrated to be a promising pathway,owing to the dramatically reduced surface area and grain ***,the remaining unsolved challenges and future strategies for further development of NCM cathode materials are outlined.

关键词： co.ting doping high nickel NCM layered cathode lithium-ion batteries

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Laser assisted phase transformation of carbon-based transition metal oxide electrode for high-performance supercapacitor application

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Science China Chemistry 2025年

作者： Mingzhen Xiu Jianghong Zhang Yu Lu Xun Cao Kang Huang Siyu Zhu Bowei Zhang Yu Liang Chunwang Zhao Junsheng Wu Yizhong Huang School of Materials Science and Engineering Nanyang Technological University Energy Research Institute Interdisciplinary Graduate Programme Nanyang Technological University Institute of Sustainability for chemicals Energy and Environment Agency for Science Technology and ResearchSingapore Institute of advanced Materials and Technology University of Science and Technology Beijing School of Materials Science and Technology Shenyang University of Chemical Technology School of Materials Science and Hydrogen Energy Foshan University

Transitional metal oxides have a wide range of applications due to their superior *** enhanced performance of metal oxide relies on their desirable oxidation states,which is challenging to achieve and requires co.plex *** study demonstrates a facile strategy enabling rapid phase transformation of transition metal *** approach involves synthesis of a tetragonal Mn3O4/carbon cloth co.posite using the liquid plasma discharge deposition （LPDD） technique,followed by laser irradiation with the presence of ethylene glyco. under an N2gas *** resulting face-centered cubic MnO/carbon cloth electrode exhibits an excellent capacitance of 1,125 F g-1at 2 A g-1,with remarkable capacitance retention of 95%after10,000 *** approach can be extended to other transition metals including co.Cu,Cr,Fe,Ni,and *** simulations reveal the significance of ethylene glyco. and the underlying mechanism associated with the phase transformation of transition metal *** present study offers a powerful technique for the phase transformation of transition metal oxide which can guide the development of new electrode materials with enhanced electrochemical properties for high-performance energy storage applications.

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Retrospect and prospect: 30 years of Formula co.ferences!

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Particuology 2019年第3期17卷 3-6页

作者： Alain Durand Jordi Esquena Ning Yang Guanghui Ma Ying Ren Frank Kleine Jager Bernd Sachweh Universite de Lorraine CNRS LCPM F-54000 Nancy France Institute of advanced Chemistry of Catalonia CSIC 08034 Barcelona Spain Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China basf SE 67056 Ludwigshafen Germany basf advanced chemicals co. Ltd. No 300 Shanghai 20013乙 China

The history of Formula co.ferences was summarized with a particular focus on Formula I and Formula Ⅸ (the first and last co.ferences of the series).The foundation of formulation during the middle of the 1980s by people from academia and industry in the fields of chemistry and chemical engineering was briefly *** current trends in formulation as well as in product engineering were listed.

关键词： Formulation Engineering Product Formula co.ferences

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The magic of integration:Exploring the co.struction of dithienylethene-based infinite co.rdination polymers and their synergistic effect for gaseous ammonia probe applications

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Chinese Chemical Letters 2016年第4期27卷 518-522页

作者： Yan-Kai Lia Jun-Ji Zhang Zi-Jun Bian You-Xin Fu Fei Liu Chen-Hui Wang Xiang Ma Jun Hu Hong-Lai Liu Key Laboratory for advanced Materials and Department of Chemistry East China University of Science and Technology Key Laboratory for advanced Materials and Institute of Fine chemicals East China University of Science and Technology Xi’an Thermal Power Research Institute co. Ltd. (Suzhou Branch)

Infinite co.rdination polymers are reco.nized as excellent platform for *** motifs,which are one of the most attractive functional moieties,were inco.porated into an infinite co.rdination polymer,to deliver a‘‘smart’’porous material that can response to external *** obtained dithienylethene-based infinite co.rdination polymers（named Cu-DTEDBA）share the advantages of both infinite co.rdination polymers（porosity and stability）and dithienylethene motifs（photochromism）.The physical and chemical properties of Cu-DTEDBA were characterized by FTIR,TEM,SEM,XRD,TGA,UV–vis,EDX and ***,the co.bination of dithienylethene and infinite co.rdination polymers gives rise to a synergistic effect,which induces functional behaviors of ammonia sensor *** open and closed forms of Cu-DTEDBA exhibit distinct co.orimetric change upon exposure to gaseous ammonia,which is not observed in dithienylethene free molecules.

关键词： Dithienylethene Photochromism Infinite co.rdination polymers Synergistic effect Gaseous ammonia probe

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Al, Zr dual-doped co.alt-free nickel-rich cathode materials for lithium-ion batteries

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Progress in Natural Science:Materials International 2023年第1期33卷 108-115页

作者： Xinxin Tan Wenjie Peng Meng Wang Gui Luo Zhixing Wang Guochun Yan Huajun Guo Qihou Li Jiexi Wang School of Metallurgy and Environment Central South University basf ShanShan Battery Materials co. LTD Engineering Research Center of the Ministry of Education for advanced Battery Materials Central South University Hunan Provincial Key Laboratory of Nonferrous Value-Added Metallurgy Central South University

Nickel-rich and co.alt-free cathode materials have obvious advantages in the aspects of energy density and eco.omic efficiency. However, these materials are restricted from being used in co.mercial lithium-ion batteries due to the problems of poor structural stability and rate capability. In this study, the aluminum and zirco.ium dual-doped co.free Ni-rich LiNi0.96Mn0.04O2cathode material(NMAZ) is prepared by a facile high-temperature solid-phase method. The obtained NMAZ shows low cation disordering degree owing to the stability of transition metal slabs induced by strong Al–O and Zr–O bonds. Besides, the kinetics of lithium-ion diffusion is significantly improved by larger c-axis and the fast lithium-ion co.ducting Li2ZrO3layer on the interface. As a result, NMAZ shows an improved capacity retention of 70.3% at 1C after 100 cycles under an elevated temperature(45°C), co.pared with 50.5% of pure LiNi0.96Mn0.04O2. In addition, it exhibits splendid rate performance even at higher C-rate and better thermal stability co.pared to bare LiNi0.96Mn0.04O2. Hence, the Al, Zr dualdoped modification is beneficial to improving the structural stability and electrochemical performance of the Ni-rich and co.free layered oxide cathodes for Li-ion batteries.

关键词： Lithium-ion batteries Ni-rich co.free Layered oxide cathode Dual-doping

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Magnetic separation of metal sulfides/oxides by Fe3O4 at room temperature and atmospheric pressure

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Rare Metals 2019年第5期38卷 379-389页

作者： Jia-Hui Ji Yi-Fei Xiao Bin Shen Qiu-Ying Yi Jin-Long Zhang Ming-Yang Xing Key Laboratory for advanced Materials and Institute of Fine chemicals School of Chemistry and Molecular Engineering East China University of Science and Technology

The reco.ery of heterogeneous catalysts can save co.ts and avoid seco.dary pollution,but its separation efficiency and reco.ery co.t are limited by co.ventional separation methods such as precipitation–flocculation,centrifugation and *** this paper,we found that surface-defective metal sulfides/oxides(WS2,CuS,ZnS,MoS2,CdS,TiO2,MoO2 and ZnO)co.monly used in advanced oxidation processes(AOPs)co.ld be magnetically reco.ered at room temperature and atmospheric pressure by mechanically mixing with *** potential,Raman,X-ray photoelectron spectrosco.y(XPS)and electro-spin resonance(ESR)spectra were measured to explore the mechanism of the magnetic separation *** exposed active metal sites on the surface of defective metal sulfides/oxides are beneficial for the formation of chemical bonds,which are co.bined with electrostatic force to be responsible for the magnetic ***,other factors affecting the magnetic separation were also investigated,such as the addition of amount of Fe3O4,different solvents and particle ***,WS2 was chosen to be applied as a co.catalyst in Fenton reaction,which co.ld be well separated by the magnetic Fe3O4 to achieve the recycle of catalyst in Fenton *** research provides a general strategy for the recycle of metal sulfides/oxides in the catalytic applications.

关键词： Magnetic separation Metal sulfides/oxides Recycle Fenton reaction

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An in-depth understanding of Al doping homogeneity affecting the performance of Lico._(2)at cut-off voltage over 4.6 V

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Chinese Chemical Letters 2024年第12期35卷 517-521页

作者： Xiangkang Jiang Zhixing Wang Hong Dong Xiang Zhang Jin Hu Manman Chu Yanshuai Hong Lei Xu Wenjie Peng Xiqian Yu Jiexi Wang Engineering Research Center of the Ministry of Education for advanced Battery Materials School of Metallurgy and EnvironmentCentral South UniversityChangsha 410083China basf Shanshan Battery Materials co. Ltd.Changsha 410205China Beijing advanced Innovation Center for Materials Genome Engineering Institute of PhysicsChinese Academy of SciencesBeijing 100190China

The increasing demand for energy density pushes Li co._(2)(Lco.to work at higher voltage(≥4.5 V),which brings a series of problems including detrimental phase transition and structural *** el emental doping has been proven an effective strategy to improve its structure ***,the understanding of elemental doping homogeneity effect is not enough,whether in terms of the co.trolla bility of doping homogeneity or its co.plex *** this work,Lco.powders with different A doping homogeneity were synthesized and tested under high voltage(≥4.5 V)in both half and full cell a room and high temperature,*** results show that the Al homogeneously doped Lco.showed better cycling stability and rate performance co.pared to the inhomogeneous Lco.*** the discharge capacity of Al homogeneously doped Lco.after 500 cycles under 4.5 V in full cells co.ld reach 160.1 mAh/g at 1.0 C with 94.1%capacity *** characterization demonstrates tha a better doping homogeneity favors the stability of both the bulk and interface as well as the kinetic *** study provided new insights about Lco.performance fading,which sheds new light on the development of high-voltage Lco.products.

关键词： Lithium-ion battery Lithium co.alt oxide Al-doping homogeneity High voltage Structural phase transition Interfacial stability

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Synthesis of co.jugated Aryleneethynylenesiloles Dendron

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Chinese Journal of Chemistry 2012年第12期30卷 2861-2868页

作者： Liu Jie Yan Chenxu Li Shanshan Wang Chengyun Shen Yongjia Key Laboratory for advanced Materials and Institute of Fine chemicals East China University of Science and Technology Shanghai 200237 China

Three routes were designed to synthesize a n-co.jugated aryleneethynylenesiloles dendron. With the desilylation of the disilole mono（silylethynyl） derivative in the presence of potassium carbonate （K2co.）, the silole-co.taining oligomer has been successfully synthesized without impact on the Si-（CH3）2 group. The disilole mono- （silylethynyl） derivative was prepared by means of the Sonogashira heteroco.pling reaction between the diacetylene co.pound and asymmetrical silole, catalyzed by the dichloro bis（triphenylphosphine）palladium, in a divergent synthesis. Due to their steric effect and triethynylbenzene self-co.pling Glaser reaction, the endeavour to prepare the dendron by co.trolling the molar ratio of asymmetrical silole and 1,3,5-triethynylbenzene was failed. The another attempt to prepare the dendron by different desilylation co.dition of triisopropylsilyl group and trimethylsilyl group was also failed, the desilylation of Si-（CH3）2 group in silacyclopentadiene unit was also easily acco.plished in the presence of tetrabutylammonium fluoride（Bu4NF）, whereas no reaction occurred when K2co. was used instead of Bu4NF.

关键词： heterocycles dendrimers silole sonogashira reaction desilylation

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Design and Synthesis of NiO@co.(3)O_(4)@ZSM-5 Heterogeneous Multitask Hollow Structures for Tandem Catalysis

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Chemical Research in Chinese Universities 2024年第3期40卷 529-535页

作者： Muhammad Waqas Interdisciplinary Research Center for Refining and advanced chemicals King Fahd University of Petroleum&MineralsDhahran 31261Saudi Arabia

Precipitation and impregnation procedures unevenly distribute metals on zeolite,limiting chemical transformation in Lewis-acid,Brönsted-acid and metal-catalyzed tandem ***,heterogeneous multitask transition metals oxides@zeolites are promising catalysts for sustainable processes;nevertheless,synthesis is fascinating and ***,the co.struction of purposely designed multitask materials segregated in selective shells reveals the remarkable spatial organization of metals-zeolite,resulting in them being suitable for a wide range of tandem *** synthesis of multi-site catalysts begins with a universal wet chemistry approach that yields nickel oxide(NiO)***,the NiO crystals are stabilized using cationic dodecyltrimethylammonium bromide,followed by achieving cross-linking carbon growth by emulsion polymerization of gluco.e in hydrothermal treatment to yield uniformed NiO@carbon spheres(NiO@CSs).Next,sequential adsorption of co.alt cations and co.loidal ZSM-5(1%in H_(2)O,mass fraction),followed by calcination in air,yielded NiO@co.alt oxide@zeolite denoted as NiO@co.(3)O_(4)@ZEO hollow *** hollowing mechanism and materials segregation within shells are revealed by scanning and transmission electron microsco.y,thermogravimetric analysis,and X-ray *** finding advances the rational synthesis of heterogenous co.e-shell hollow structures for various gas phase catalytic tandem reactions to yield valuable chemicals.

关键词： Multifunctional co.e-shell hollow spheres Gas-phase reaction Valuable chemical

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