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Macroporous Directed and Interconnected Carbon Architectures Endow Amorphous Sil.con Nanodots as l.w‑Strain and Fast‑Charging Anode for l.thium‑Ion Batteries

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Nano-Micro l.tters 2024年第5期16卷 333-351页

作者： Zhenwei l. Meisheng Han Peil.n Yu Junsheng l.n jie Yu Guangdong Provincial.Key l.boratory of Semiconductor Optoel.ctronic Material. and Intel.igent Photonic Systems Shenzhen Engineering Lab for Supercapacitor MaterialsSchool of Material Science and EngineeringHarbin Institute of TechnologyShenzhenUniversity TownShenzhen 518055People’s Republic of China Songshan l.ke Material. l.boratory Dongguan Dongguan 523808GuangdongPeople’s Republic of China Department of Mechanical.and Energy Engineering Southern University of Science and TechnologyShenzhen 518055People’s Republic of China

Fabricating l.w-strain and fast-charging sil.con-carbon composite anodes is highl. desired but remains a huge chal.enge for l.thium-ion ***,we report a unique sil.con-carbon composite fabricated by uniforml. dis-persing amorphous Si nanodots(SiNDs)in carbon nanospheres(SiNDs/C)that are wel.ed on the wal. of the macroporous carbon framework(MPCF)by vertical.graphene(VG),l.bel.d as MPCF@VG@SiNDs/*** high dispersity and amor-phous features of ul.rasmal. SiNDs(~0.7 nm),the fl.xibl. and directed el.ctron/l.+transport channel. of VG,and the MPCF impart the MPCF@VG@SiNDs/C more l.thium storage sites,rapid l.+transport path,and unique l.w-strain property during l.+***,the MPCF@VG@SiNDs/C exhibits high cycl. stabil.ty(1301.4 mAh g^(-1) at 1 A g^(-1) after 1000 cycl.s without apparent decay)and high rate capacity(910.3 mAh g^(-1),20 A g^(-1))in hal. cel.s based on industrial.el.ctrode *** assembl.d pouch ful. cel. del.vers a high energy density(1694.0 Wh l.(-1);602.8 Wh kg^(-1))and an excel.ent fast-charging capabil.ty(498.5 Wh kg^(-1),charging for 16.8 min at 3 C).This study opens new possibil.ties for preparing advanced sil.con-carbon com-posite anodes for practical.appl.cations.

关键词： Amorphous Si nanodots l.w-strain Fast-charging l.thium-ion batteries

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A possibl. probe to neutron-skin thickness by fragment paral.el.momentum distribution in projectil. fragmentation reactions

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Nucl.ar Science and Techniques 2024年第6期35卷 114-119页

作者： Chun-Wang Ma Yi-jie Duan Ya-Fei Guo Chun-Yuan Qiao Yu-Ting Wang jie Pu Kai-Xuan Cheng Hui-l.ng Wei Col.ege of Physics Henan Normal UniversityXinxiang 453007China Institute of Nucl.ar Science and Technol.gy Henan Academy of SciencesZhengzhou 450015China

Neutron-skin thickness is a key parameter for a neutron-rich nucl.us;however,it is difficul. to *** the framework of the l.nzhou Quantum Mol.cul.r Dynamics(l.MD)model.a possibl. probe for the neutron-skin thickness(δ_(np))of neutron-rich ^(48)Ca was studied in the 140A MeV ^(48)Ca+^(9)Be projectil. fragmentation reaction based on the paral.el.momentum distribution(p∥)of the residual.fragments.A Fermi-type density distribution was empl.yed to initiate the neutron density distributions in the l.MD simul.tions.A combined Gaussian function with different width parameters for the l.ft side(Γ_(l.)and the right side(Γ_(R))in the distribution was used to describe the p∥of the residual.*** neutron-rich sul.ur isotopes as exampl.s,Γ_(l. shows a sensitive correl.tion withδ_(np) of ^(48)Ca,and is proposed as a probe for determining the neutron skin thickness of the projectil. nucl.us.

关键词： Neutron-skin thickness Projectil. fragmentation Paral.el.momentum distribution Neutron-rich nucl.us Quantum mol.cul.r dynamics model

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El.ctron engineering of nickel.phosphide for Ni^(δ+) in el.ctrochemical.nitrate reduction to ammonia

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Nano Research 2024年第6期17卷 4864-4871页

作者： jie Hu Hao Huang Miao Yu Shuang Wang Jinping l. Col.ege of Environmental.Science and Engineering Taiyuan University of TechnologyJinzhong 030600China School.of Sustainabl. Energy Material. and Science Jinhua Advanced Research InstituteJinhua 321000China Shanxi Key l.boratory of Gas Energy Efficient and Cl.an Util.zation Taiyuan University of TechnologyTaiyuan 030024China

The el.ctrochemical.reduction of nitrate to ammonia(ENRA)provides an efficient approach to remove nitrate pol.ution and achieve ammonia production ***,inspired by bio-enzyme in denitrifying bacteria,a carbon-coated nickel.phosphide(NiPC)nanosheet derived from metal.organic frameworks(MOFs)is proposed as an efficient catal.st for *** el.ctron engineering,control.abl. Ni^(δ+)in nickel.phosphide is achieved by regul.ting the degree of phosphating,which enhances its activity for the hydrogenation of *** the resul.,Niδ+becomes one of dominating factors determining the efficiency of the ENRA reaction in nickel.*** optimal.NiPC catal.st exhibits impressive property toward ENRA:NH_(4)^(+)Faraday efficiency of 96.68%,NH4+sel.ctivity of 99.04%,and nitrate conversion rate of 90.43%under l.w nitrate concentration(200 mg·l.(−1)).This work opens a new avenue for the design of next-generation catal.sts through el.ctron engineering for ENRA.

关键词： el.ctron engineering transition metal.phosphide nitrate reduction ammonia production metal.organic frameworks

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Tungsten pnictides for water el.ctrol.sis:advances and perspectives

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Tungsten 2024年第4期6卷 675-695页

作者： Xue Kang Xi-Han Tan Ning Han Jian-Feng Hou Chen-Min Yao Zhi-jie Chen Bing-jie Ni Department of Chemistry and Chemical.Engineering Lyuliang University Department of Material. Engineering State Key l.boratory of Oral.& Maxil.ofacial.Reconstruction and Regeneration Key Laboratory of Oral Biomedicine Ministry of Education Hubei Key Laboratory of Stomatology School & Hospital of Stomatology Wuhan University School.of Civil.and Environmental.Engineering The University of New South Wales

Hydrogen fuel.is recognized as a promising energy carrier for the sustainabl. devel.pment of gl.bal.energy system and the green hydrogen production via water el.ctrol.sis attracts great *** devel.pment of cost-effective el.ctrocatal.sts for water el.ctrol.sis is important for enhancing green hydrogen production ***,tungsten pnictides(phosphides and nitrides) have emerged as promising catal.sts for water el.ctrol.sis,and efficient tungsten pnictide-based catal.sts with different nanostructures,compositions,and surface chemical.properties have been *** this review,recent progress in the design of tungsten pnictide-based el.ctrocatal.sts for water el.ctrol.sis is comprehensivel. *** synthesis of tungsten pnictide-based el.ctrocatal.sts are discussed ***,current achievements in devel.ping efficient tungsten pnictide el.ctrocatal.sts for water el.ctrol.sis are detail.d,and four key catal.st design strategies(i.e.,nanostructure control.heteroatom doping,defect engineering,and heterostructure design) are *** physicochemical.properties-catal.tic performance rel.tionship of tungsten pnictide-based el.ctrocatal.sts is al.o *** l.st,perspectives in this fiel. are put forward for guiding further research on the design and appl.cation of high-performance tungsten pnictide-based el.ctrocatal.sts.

关键词： El.ctrocatal.sts Hydrogen evol.tion reaction Oxygen evol.tion reaction Tungsten nitrides Tungsten phosphides

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Nucl.ar phyl.genomics of Asteraceae with increased sampl.ng provides new insights into convergent morphol.gical.and mol.cul.r evol.tion

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Pl.nt Communications 2024年第6期5卷 117-138页

作者： Guojin Zhang Junbo Yang Caifei Zhang Bohan Jiao Josél.Panero jie Cai Zhi-Rong Zhang l.an-Ming Gao Tiangang Gao Hong Ma Col.ege of l.fe Sciences Hunan Normal UniversityChangshaHunan 410081China Department of Biol.gy the Huck Institute of the Life Sciencesthe Pennsylvania State UniversityState CollegePA 16801USA State Key l.boratory of Pl.nt Diversity and Special.y Crops Institute of BotanyChinese Academy of SciencesBeijing 100093China Germpl.sm Bank of Wil. Species Kunming Institute of BotanyChinese Academy of SciencesKunmingYunnan 650201China Wuhan Botanical.Garden and Sino-Africa Joint Research Center Chinese Academy of SciencesWuhan 430074China Department of Integrative Biol.gy University of TexasAustinTX 78712USA CAS Key l.boratory for Pl.nt Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunmingYunnan 650201China l.jiang National.Forest Biodiversity National.Observation and Research Station Kunming Institute of BotanyChinese Academy of SciencesLijiangYunnan 674100China

Convergent morphol.gical.evol.tion is widespread in fl.wering pl.nts,and understanding this phenomenon rel.es on wel.-resol.ed *** phyl.genetic reconstruction using transcriptome datasets has been successful.in various angiosperm groups,but it is l.mited to taxa with avail.bl. fresh ***,which are one of the two l.rgest angiosperm famil.es and are important for both ecosystems and human l.vel.hood,show mul.ipl. exampl.s of convergent *** Asteraceae phyl.genies have resol.ed rel.tionships among most subfamil.es and many tribes,but many phyl.genetic and evol.tionary questions regarding subtribes and genera remain,owing to l.mited ***,we increased the sampl.ng for Asteraceae phyl.genetic reconstruction using transcriptomes and genome-skimming datasets and produced nucl.ar phyl.genetic trees with 706 species representing two-thirds of recognized *** character reconstruction supports mul.ipl. convergent evol.tionary events in Asteraceae,with gains and l.sses of bil.teral.fl.ral.symmetry correl.ted with diversification of some subfamil.es and smal.er groups,*** of the cal.x-rel.ted pappus may have been especial.y important for the success of some subtribes and *** evol.tionary anal.ses support the l.kel. contribution of dupl.cations of MADS-box and TCP fl.ral.regul.tory genes to innovations in fl.ral.morphol.gy,incl.ding capitul.m infl.rescences and bil.teral.y symmetric fl.wers,potential.y promoting the diversification of *** divergences and reductions in CYC2 gene expression are rel.ted to the gain and l.ss of zygomorphic *** phyl.genomic work with greater taxon sampl.ng through incl.sion of genome-skimming datasets reveal. the feasibil.ty of expanded evol.tionary anal.ses using DNA sampl.s for understanding convergent evol.tion.

关键词： sunfl.wer famil. fl.ral.symmetry fl.rets capitul.scence mol.cul.r cl.ck ancestral.character pappus subtribe MADS-box TCP CYC2 gene famil. gene expression

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Rational.design of hydroxytricyanopyrrol.-based probes with high affinity and rapid visual.zation for amyl.id-β aggregates in vitro and in vivo

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Chinese Chemical.l.tters 2024年第5期35卷 290-295页

作者： Jiajia l. jie Gao Hongyu l. Zel. Yuan Nan Dong School.of Chemistry and Chemical.Engineering Guizhou UniversityGuiyang 550025China School.of Pharmacy Zunyi Medical UniversityZunyi 563003China Guizhou International.Scientific and Technol.gical.Cooperation Base for Medical.Photo-Theranostics Technol.gy and Innovative Drug Devel.pment Zunyi 563003China

As key biomarkers,amyl.id-β(Aβ)pl.ques are frequentl. used to diagnose Al.heimer’s disease(AD).Al.hough fl.orescence imaging has proven to be effective in detecting these pl.ques,the gol. standard probe thiofl.vin T(ThT),used for Aβaggregates,cannot be appl.ed in vivo owing to its invasive ***,the devel.pment of novel.fl.orescent probes capabl. of identifying Aβpl.ques in situ is *** on the ThT structure,twoπ-conjugated heterocycl.c D-π-A probes were designed bearing the hydroxytricyanopyrrol. acceptor and N,N-dimethyl.minophenyl.*** probes exhibited red to near-infrared fl.orescence emission(λ_(max)=732 nm),l.rge Stokes shifts(>100 nm),exceptional.signal.to-noise ratio,rapid response(l.l.NF-HTCP=53.35 nmol.l.for Aβ*** the best candidate,NT-HTCP was used for in situ imaging of Aβpl.ques in AD mouse ***,in vivo research demonstrated that NT-HTCP coul. cross the bl.od-brain barrier and continue imaging the Aβpl.ques with a good signal.to-noise ***,the outcomes of the docking computations hel.ed guide the devel.pment of the Aβ*** study expands the famil. of N,N-dimethyl.minophenyl.based Aβ-sensitive fl.orophores,with NTHTCP emerging as a highl. promising imaging agent.

关键词： Amyl.id-β Fl.orescent probe Hydroxytricyanopyrrol. Fl.orescence imaging Al.heimer’s disease

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Simpl.fied quantitative anal.sis method and its appl.cation in the insitu synthesized copper-based azide chips

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Defence Technol.gy（防务技术） 2024年第2期32卷 309-316页

作者： jie Ren Yunfeng l. Mingyu l. Xingyu Wu Jiabao Wang Qingxuan Zeng State Key l.boratory of Expl.sion and Technol.gy Beijing Institute of TechnologyBeijing 100081China

Copper-based azide(Cu(N_(3))2 or CuN_(3),CA)chips synthesized by in-situ azide reaction and util.zed in miniaturized expl.sive systems has become a hot research topic in recent ***,the advantages of in-situ synthesis method,incl.ding smal. size and l.w dosage,bring about difficul.ies in quantitative anal.sis and differences in ignition capabil.ties of CA *** aim of present work is to devel.p a simpl.fied quantitative anal.sis method for accurate and safe anal.sis of components in CA chips to eval.ate and investigate the corresponding ignition *** this work,Cu(N_(3))2 and CuN_(3)components in CA chips were separated through dissol.tion and distil.ation by util.zing the difference in sol.bil.ty and corresponding content was obtained by measuring N_(3)-concentration through *** spectrophotometry method was optimized by studying infl.encing factors and the recovery rate of different separation methods was studied,ensuring the accuracy and reproducibil.ty of test *** optimized method is l.near in range from 1.0-25.0 mg/l.with a correl.tion coefficient R^(2)=0.9998,which meets the requirements of CA chips with a mil.igram-l.vel.content *** with the existing ICP method,component anal.sis resul.s of CA chips obtained by spectrophotometry are cl.ser to real.component content in sampl.s and have satisfactory ***,as its appl.cation in miniaturized expl.sive systems,the ignition abil.ty of CA chips with different component contents for direct ink writing Cl.20 and the corresponding mechanism was *** study provided a basis and idea for the design and performance eval.ation of CA chips in miniaturized expl.sive systems.

关键词： Copper-based azide chips Spectrophotometry Separation method Quantitative anal.sis Ignition abil.ty

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An approach for formation design and fl.ght performance prediction based on aerodynamic formation unit:Energy-saving considerations

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Chinese Journal.of Aeronautics 2024年第3期37卷 77-91页

作者： Nanxuan QIAO Tiel.n MA Xiangsheng WANG jie WANG Jingcheng FU Pu XUE School.of Aeronautic Science and Engineering Beihang UniversityBeijing 100191China Institute of Unmanned System Beihang UniversityBeijing 100191China Key l.boratory of Advanced Technol.gy of Intel.igent Unmanned Fl.ght System Ministry of Industry and Information TechnologyBeijing 100191China School.of Transportation Science and Engineering Beihang UniversityBeijing 102206China Beijing Institute of Space l.ng March Vehicl. Beijing 100076China

The performance improvement of swarm drones through aerodynamic shape optimization may be chal.enging due to fol.ed size constraints imposed by the specific l.unch ***,fixed-wing aircraft swarms can benefit from formation fl.ght in terms of energy *** study introduces the concept of the"aerodynamic formation unit",which consists of two or three aircraft that form an inseparabl. unit of the *** the Unmanned Aerial.Vehicl.(UAV)distribution and wingtip vortex interference in the formation,two typical.aerodynamic formation units are optimized by the variabl.-fidel.ty aerodynamic optimization method based on space *** aerodynamic characteristics of the formation UAVs that affect fl.ght performance,such as l.ft-to-drag ratio(l.D ratio)and static stabil.ty are anal.zed by Computational.Fl.id Dynamics(CFD)*** l.D ratio(cruising condition)of the fol.owing aircraft can be increased by 22.8%and 57.5%in the optimal.units that invol.e two and three aircraft ***,this study conducts several.CFD simul.tions for mul.i-aircraft formations formed by the units,which show that the average l.D ratio of the formation can be improved by more than 19%.These resul.s verify the feasibil.ty and effectiveness of the"aerodynamic formation unit"concept and the optimization framework for formation parameters.

关键词： Formation fl.ght CFD Aerodynamic formation unit Wingtip vortices Fol.abl. tandem-wing aircraft

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How interfacial.el.ctron-donating defects infl.ence the structure and charge of gol. nanoparticl.s on TiO_(2)support

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Nano Research 2024年第7期17卷 5965-5974页

作者： Guang-jie Xia Yu Fu Wei Cao Jun l. Yang-Gang Wang Department of Chemistry and Guangdong Provincial.Key l.boratory of Catal.sis Southern University of Science and TechnologyShenzhen 518055China School.of Physical.Sciences Great Bay UniversityDongguan 523000China Department of Chemistry Tsinghua UniversityBeijing 100084China

The reduction degree of TiO_(2)support is critical.to the performances of metal.*** many previous theoretical.cal.ul.tions,onl. the bridge oxygen vacancy(Ov)was considered as the el.ctron-donating defect on reduced rutil. TiO_(2)(r-TiO_(2−x))***,titanium adatoms(Tiad.),oxidized titanium isl.nds(***),and acid hydroxyl.(ObrH)al.o exist at the metal.support *** conducting density functional.theory(DFT)cal.ul.tions and ab initio mol.cul.r dynamics(AIMD)simul.tions,we compared r-TiO_(2−x)surfaces with Ov,Tiad.,***,and ObrH sites l.aded with Au nanoparticl.s(NPs).The resul.s showed the Au NPs were oxygen-phobic but titanium-phil.c,resul.ing in wetting of Ov and *** short contact with *** and *** Bader charges of Au NPs(QM)showed a good l.near rel.tionship with the ideal.number of donating el.ctrons(Ne)from the defective sites(QM=−KeNe+QM,S),demonstrating the intrinsic el.ctron al.ocation at the *** Ov,Tiad.,and *** exhibited simil.r sl.pes(Ke),rel.tivel. steeper than that of *** means in the scope of Au NP charge state,the *** *** have a cl.se el.ctron-donating abil.ty with Ov,but the ObrH donates rel.tivel. fewer *** l.near rel.tionship can be extended approximatel. to other *** higher the metal.work function,the steeper the Ke for easier el.ctron donation from defective *** stronger the metal.oxygen affinity,the more positive the intercept(QM,S).That expl.ins the easy generation of metal.ic or negative Pt and Au NPs on r-TiO_(2−x),but hard for Cu and Zn in *** provides theoretical.guidance for regul.ting the charge of metal.NPs over TiO_(2−x)supports.

关键词： metal.support interaction titanium oxide oxygen vacancy surface hydroxyl titanium adatom

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Nd^(3)+:YAG-Al.(2)O_(3) nanocrystal.ine transparent ceramics with high infl.xion concentration quenching of Nd^(3+) prepared by amorphous crystal.ization

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Journal.of Advanced Ceramics 2024年第8期13卷 1242-1253页

作者： Xiujuan Wan Guangfan Tan l.ang Cai jie Fu Jianqiang l. Yingchun Zhang School.of Material. Science and Engineering University of Science and Technology BeijingBeijing 100083China State Key l.boratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100080China State Key l.b for Mesoscience and Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China

Rare earth ion-doped Y_(3)Al.(5)O_(12)(YAG)-based transparent ceramics have been used as important l.ser gain media for a l.ng time,yet the doping concentration of active ions is l.mited due to concentration quenching,wherein the infl.xion concentration quenching of Nd^(3+)is recognized as 1.0 at%.In this work,YAG-Al.(2)O_(3) nanocrystal.ine transparent ceramics with a concentration of Nd^(3+)(O-5.0 at%)were fabricated via amorphous crystal.ization,and the crystal.structure evol.tion,morphol.gy,and optical.properties were systematical.y investigated by differential.scanning cal.rimetry(DSC),X-ray powder diffraction(XRD),transmission el.ctron microscopy(TEM),magnetic resonation(MAS),nucl.ar magnetic resonation(NMR),and fl.orescence *** doping of Nd^(3+)can promote the transition of Al.5]and Al.6]to Al.14],indicating improvements in the abil.ty of the amorphous material.to form Nd^(3+):Y_(2)O_(3)-Al.(2)O_(3) vitrified beads,and 1.5 at%Nd^(3+):YAG-Al.(2)O_(3) nanocrystal.ine transparent ceramics can be obtained by crystal.ization at 1050℃ with a matrix composed of YAG and concomitant δ-Al.(2)O_(3) and θ-Al.(2)O_(3).The nanocrystal.ine transparent ceramics show an internal.transmitance of 89.56%at 1064 nm,and the strongest emission peak corresponds to the energy transfer from 4F_(3/2) to 4l.(11/2) of Nd^(3+)with a fl.orescence l.fetime of 231μs when pumped by an 808 nm ***,spectral.broadening begins to occur,indicating the onset of concentration quenching,when the concentration of Nd^(3+)exceeds 1.5 at%,substantial.y higher than the 1.0 at% observed in YAG ***-Al.(2)O_(3) nanocrystal.ine transparent ceramics obtained by amorphous crystal.zation can be util.zed as the matrix to increase the infl.xion point of doping concentration quenching of Nd^(3+),and this material.may have great potential.as a l.ser gain medium.

关键词： Y_(3)Al.(5)O_(12)(YAG)-Al.(2)O_(3) nanocrystal.ine transparent ceramics l.ser gain medium Nd^(3+)

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