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Coral-like and binder-free carbon nanow.res for potassium.dual-ion batteries w.th superior rate capability and long-term.cycling life

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Green Energy & Environm.nt 2023年第2期8卷 548-558页

作者： m.n w.ng Qirong Liu Guangm.ng w. Jianm.n m. Yongbing tang Functional Thin Film. Research Center Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen518055China School of Physics and Electronics Hunan UniversityChangsha410082China Key Laboratory of Advanced m.terials Processing&m.ld Ministry of EducationZhengzhou UniversityZhengzhou450002China Guangdong-Hong Kong-m.cao Joint Laboratory of Hum.n-m.chine Intelligence-Synergy System. Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen518055China

Ow.ng to the advantages of high operating voltage,environm.ntal benignity,and low.cost,potassium.based dual-ion batteries(KDIBs)have been considered as a potential candidate for large-scale energy ***,KDIBs generally suffer from.poor cycling perform.nce and unsatisfied capacity,and inactive com.onents of conductive agents,binders,and current collector further low.r their overall ***,w. prepare coral-like carbon nanow.es(CCNw.)doped w.th nitrogen as a binder-free anode m.terial for K^(+)-ion storage,in w.ich the unique coral-like porous nanostructure and am.rphous/short-range-ordered com.osite feature are conducive to enhancing the structural stability,to facilitating the ion transfer and to boosting the full utilization of active sites during potassiation/de-potassiation *** a result,the CCNw.anode possesses a hybrid K^(+)-storage m.chanism.of diffusive behavior and capacitive adsorption,and stably delivers a high capacity of 276 m.h g^(-1)at 50 m. g^(-1),good rate capability up to 2 A g^(-1),and long-term.cycling stability w.th 93%capacity retention after 2000 cycles at 1 A g^(-1).Further,assem.ling this CCNw.anode w.th an environm.ntally benign expanded graphite(EG)cathode yields a proof-of-concept KDIB,w.ich show. a high specific capacity of 134.4 m.h g^(-1)at 100 m. g^(-1),excellent rate capability of 106.5 m.h g^(-1)at 1 A g^(-1),and long-term.cycling stability over 1000 cycles w.th negligible capacity *** study provides a feasible approach to developing high-perform.nce anodes for potassium.based energy storage devices.

关键词： Carbon nanow.res Binder-free K-ion Dual-ion batteries Structural stability

Stability and optoelectronic property of low.dim.nsional organic tin brom.de perovskites

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Chinese Physics B 2021年第3期30卷 483-487页

作者： J H Lei Q tang J He m.Q Cai School of Science Hunan University of TechnologyZhuzhou 412007China School of Physics and Electronics Science Hunan UniversityChangsha 410082China

The toxicity and degradation of hybrid lead-halide perovskites hinder their extensive *** is thus of great im.ortance to explore non-toxic alternative m.terials w.th excellent stability and optoelectronic *** investigate the atom.c structures and optoelectronic properties of non-toxic organic tin brom.de perovskites(OTBP)w.th one/zerodim.nsional(1D/0D)structures by first-principles *** calculated atom.c structures show.that the 1D/0D OTBPs are stable and the structure of inorganic octahedra in 0D is higher order than that in ***,the origination of exceptional purity em.tting light in experim.nts is explained based on the calculated electronic structure.

关键词： one/zero dim.nsional non-toxic organic tin brom.de perovskites first principle calculation stability Optoelectronic property

U-Pb Zircon Age, Geochem.cal, and Sr-Nd-Pb Isotopic Constraints on the Age and Origin of m.fic Dykes from.Eastern Shandong Province, Eastern China

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Acta Geologica Sinica(English Edition) 2013年第4期87卷 1045-1057页

作者： LIU Shen HU Ruizhong FENG Caixia GAO Shan FENG Guangying LAI Shaocong QI Youqiang Ian m. COULSON YANG Yuhong YANG Chaogui tang Liang State Key Laboratory of Continental Dynam.cs /Departm.nt of Geology Northwest University State Key Laboratory of Ore Deposit Geochem.stry Institute of Geochemistry Chinese Academy of Sciences State Key Laboratory of Geological Processes and m.neral Resources China University of Geosciences Solid Earth Studies Laboratory Department of Geology University of Regina

U-Pb zircon age, geochem.cal, and Sr-Nd-Pb isotopic data of m.fic dykes from.eastern Shandong Province, eastern China is reported herein. Laser ablation inductively coupled plasm. m.ss spectrom.try （LA-ICP-m.） U-Pb zircon analyses of tw. sam.les from.the investigated m.fic dykes yield consistent ages ranging from.121.9 m. ± 0.47 m. to 122.9 m. ± 0.61 m.. The m.fic dykes are characterized by high （87Sr/86Sr） i ranging from.0.7087 to 0.7089, low.εNd（t） values ranging from.-16.9 to -17.8, 206Pb/204Pb = 17.15 to 17.17, 207Pb/204Pb = 15.45 to 15.47, and 208Pb/204Pb = 37.59 to 37.68. Results from.the current study suggest that the m.fic dykes are derived from.partial m.lting of ancient lithospheric m.ntle that w.s variably hybridized by m.lts derived from.foundered low.r crustal eclogite. The m.fic dykes m.y have been generated through subsequent insignificant crystal fractionation and very m.nor crustal contam.nation during m.gm. ascent. Com.ined w.th previous studies, the current findings provide new.evidence that the intense lithospheric thinning beneath the eastern Shandong Province of eastern China occurred at ~120 m., and that this condition w.s caused by the rem.val of the low.r lithosphere （m.ntle and low.r crust）.

关键词： Eastern China eastern Shandong Province foundering m.fic dykes North China Craton

CONVERGENCE ANALYSIS FOR SPECTRAL APPROXIm.TION TO A SCALAR TRANSPORT EQUATION w.TH A RANDOm.w.VE SPEED

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Journal of Com.utational m.them.tics 2012年第6期30卷 643-656页

作者： TaoZhou Tao tang LSEC ICMSEC Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100190 China CSQI-m.THICSE Ecole Polytechnique Federale de Lausanne Switzerland Departm.nt of m.them.tics Hong Kong Baptist University Kowloon Hong Kong

This paper is concerned w.th the initial-boundary value problem. of scalar transport equations w.th uncertain transport velocities. It w.s dem.nstrated in our earlier w.rks that regularity of the exact solutions in the random.spaces （or the param.tric spaces） can be determ.ned by the given data. In turn, these regularity results are crucial to convergence analysis for high order num.rical m.thods. In this w.rk, w. w.ll prove the spectral conver- gence of the stochastic Galerkin and collocation m.thods under som. regularity results or assum.tions. As our prim.ry goal is to investigate the errors introduced by discretizations in the random.space, the errors for solving the corresponding determ.nistic problem. w.ll be neglected.

关键词： Scalar transport equations Analytic regularity Stochastic Galerkin Stochasticcollocation Spectral convergence.

Advanced transition m.tal/nitrogen/carbon-based electrocatalysts for fuel cell applications

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Science China Chem.stry 2020年第11期63卷 1517-1542页

作者： tang tang Liang Ding Zhe Jiang Jin-Song Hu Li-Jun w.n Beijing National Laboratory for m.lecular Sciences CAS Key Laboratory of Molecular Nanostructure and NanotechnologyInstitute of ChemistryChinese Academy of SciencesBeijing 100190China University of Chinese Academ. of Sciences Beijing 100049China

The developm.nt of advanced transition m.tal/nitrogen/carbon-based(m.N/C)catalysts w.th high activity and extended durability for oxygen reduction reaction(ORR)is critical for platinum.group-m.tal(PGm.free fuel cells but still rem.ins great *** this review.w. sum.arize the recent progress in tw. typical m.N/C catalysts(atom.cally dispersed m.tal-nitrogen-carbon(m.N-C)catalysts and carbon-supported m.tal nanoparticles w.th N-doped carbon shells(m.NC))w.th an em.hasis on their potential applications in fuel *** w.th understanding the active sites in these tw. types of catalysts,the representative innovative strategies for enhancing their intrinsic activity and increasing the density of these sites are system.tically *** synergistic effects of m.N-C and m.NC are subsequently discussed for those m.N/C catalysts com.ining both of *** translate the m.terial-level catalyst perform.nce into high-perform.nce devices,w. also include the recent progress in engineering the porous structure and durability of m.N/C catalysts tow.rds efficient perform.nce in fuel cell *** the view.oint of industrial applications,the scale-up cost-effective synthesis of m.N/C catalysts has been lastly *** this know.edge,the challenges and perspectives in designing advanced m.N/C catalysts for potential PGm.free fuel cells are proposed.

关键词： electrocatalysis ORR m.tal-nitrogen-carbon m.NC fuel cells oxygen reduction

A supram.lecular self-assem.ly m.terial based on cucurbituril and cationic TPE as ultra-sensitive probe of energetic pentazolate salts

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Defence Technology（防务技术） 2024年第5期35卷 69-76页

作者： Boan tang Jingxiang Zhong Shutao w.ng Shiyu Zhou Yongxing tang w.i Huang School of Chem.stry and Chem.cal Engineering Nanjing University of Science and TechnologyNanjing 210094China

The successful synthesis of the pentazolate anion(cyclo-N-5)has been a great breakthrough in the field of energetic ***,the detection m.thods for these energetic m.terials based on the pentazolate anion are quite ***,tw. fluorescent probes for cyclo-N-5anion w.re *** 1(TPE2N)w.s synthesized w.th a tetraphenylethylene functionalized by tw. cationic groups w.ich can generate strong electrostatic interactions w.th pentazolate anion and result in specific fluorescent *** 2 w.s designed based on sensor 1 and supram.lecular cucurbit[7]uril(CB[7]).The unique structural features of CB[7]provide sites for the interaction betw.en the cations and N-5anion in its cavity,w.ich w.uld generate a platform.for the detection and enhance the recognition *** titration calorim.try(ITC)experim.nt and fluorescence titration experim.nt indicate the binding m.lar ratio betw.en sensor 1 w.th CB[7]is 1:*** sensors display typical aggregation-induced em.ssion(AIE)features and good *** sensors dem.nstrate excellent sensitivity to pentazole hydrazine salt w.th high enhancem.nt constant(sensor 1:1.34×10^(6);sensor 2:3.78×10^(6))and low.lim.t of detection(LOD:sensor 1=4.33μm.sensor 2=1.54μm..The form.tion of an AIE-based supram.lecular sensor effectively im.roves the sensitivity to *** addition,the probes also have good selectivity of N-5anion *** research w.uld shed som. light on the design of novel fluorescent sensors to detect pentazolate-based m.lecules and provides an exam.le of supram.lecular chem.stry com.ined w.th fluorescent probes.

关键词： Pentazolate anion Explosives detection Aggregation-induced em.ssion(AIE) Host-guest interaction

Polym.r m.trix w.ve-transparent com.osites:A review

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Journal of m.terials Science & Technology 2021年第16期75卷 225-251页

作者： Lin tang Junliang Zhang Yusheng tang Jie kong Tianxi Liu Junw.i Gu Shaanxi Key Laboratory of m.crom.lecular Science and Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi'an 710072China State Key Laboratory for m.dification of Chem.cal Fibers and Polym.r m.terials Donghua University.Shanghai 201620China School of m.terials Science and Engineering Henan University of Science and TechnologyLuoyang 471023China

w.th the rapid developm.nt of electronic inform.tion technology,antenna system. in the fields of aviation,aerospace,transportation,and 5 G com.unication services are becom.ng m.re and m.re intensive and *** m.trix w.ve-transparent com.osites w.th lightw.ight,low.dielectric constant(∈)and dielectric loss tangent(tanδ),high tem.erature resistance,and excellent m.chanical properties are urgently needed in order to ensure high-fidelity transm.ssion of electrom.gnetic w.ve and protect antenna system. from.external *** review.introduces the w.ve transm.ssion m.chanism.key com.ositions(polym.r m.trix&reinforced fibers),and several typical testing m.thods for dielectric properties of polym.r m.trix w.ve-transparent com.osites,m.inly elaborates the latest research progress and achievem.nts of polym.r m.trix w.ve-transparent com.osites from.polym.r m.trix,reinforced fibers and their surface functionalization m.thods,and presents the key scientific and technical problem. that need to be solved urgently in the application of polym.r m.trix w.ve-transparent com.osites in the antenna ***,the future developm.nt trends and application prospects of the polym.r m.trix w.ve-transparent com.osites are also proposed.

关键词： Polym.r m.trix w.ve-transparent com.osites Reinforced fibers Surface functionalization Testing m.thods Application prospect

Flexible and Robust Functionalized Boron Nitride/Poly(p‑Phenylene Benzobisoxazole)Nanocom.osite Paper w.th High Therm.l Conductivity and Outstanding Electrical Insulation

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Nano-m.cro Letters 2024年第2期16卷 423-437页

作者： Lin tang Kunpeng Ruan Xi Liu Yusheng tang Yali Zhang Junw.i Gu Chongqing Key Laboratory of Green Synthesis and Applications College of ChemistryChongqing Normal UniversityChongqing 401331People’s Republic of China Shaanxi Key Laboratory of m.crom.lecular Science and Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710072People’s Republic of China

w.th the rapid developm.nt of 5G inform.tion technology,therm.l conductivity/dissipation problem. of highly integrated electronic devices and electrical equipm.nt are becom.ng *** this w.rk,“high-tem.erature solid-phase&diazonium.salt decom.osition”m.thod is carried out to prepare benzidine-functionalized boron nitride(m.BN).Subsequently,m.BN/poly(pphenylene benzobisoxazole)nanofiber(PNF)nanocom.osite paper w.th nacrem.m.tic layered structures is prepared via sol–gel film.transform.tion *** obtained m.BN/PNF nanocom.osite paper w.th 50 w.%m.BN presents excellent therm.l conductivity,incredible electrical insulation,outstanding m.chanical properties and therm.l stability,due to the construction of extensive hydrogen bonds andπ–πinteractions betw.en m.BN and PNF,and stable nacre-m.m.tic layered ***λ∥andλ_(⊥)are 9.68 and 0.84 w.m.(-1)K^(-1),and the volum. resistivity and breakdow. strength are as high as 2.3×10^(15)Ωcm.and 324.2 kV m.^(-1),***,it also presents extrem.ly high tensile strength of 193.6 m.a and therm.l decom.osition tem.erature of 640°C,show.ng a broad application prospect in high-end therm.l m.nagem.nt fields such as electronic devices and electrical equipm.nt.

关键词： Poly(p-phenylene-2,6-benzobisoxazole)nanofiber Boron nitride Therm.l conductivity Electrical insulation

On testing proportional odds assum.tions for proportional odds m.dels

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General Psychiatry 2023年第3期36卷 214-219页

作者： Anqi Liu Hua He Xin m.Tu w.n tang Departm.nt of Bostaistis and Data Science Tulane UniversityNew OrleansLouisianaUSA Departm.nt of Epidem.ology Tulane UniversityNew OrleansLouisianaUSA Division of Biostatistics and Bioinform.tics Herbert Wertheim School of Public Health and Human Longevity ScienceUC San DiegoLa JollaCaliforniaUSA

Proportional odds m.dels are com.only used to m.del ordinal responses,but the proportional odds assum.tion m.y not hold in practice,leading to biased *** such as score,w.ld and likelihood ratio(LR)have been proposed to evaluate the proportional odds assum.tion based on m.dels w.thout the *** has proposed an independent binary m.del-based w.ld-type test,and w.lfe and Gould have extended the idea to propose an LR-type *** paper provides a brief review.of the Brant and w.lfe-Gould tests for evaluating the proportional odds assum.tion and evaluates their perform.nce through sim.lation studies and a real data *** program. are provided in SAS,SPSS and Stata to facilitate the im.lem.ntation of these tests using standard statistical softw.re *** study highlights the im.ortance of evaluating the proportional odds assum.tion w.en using proportional odds m.dels for ordinal *** sam.le program. provided in this paper m.ke it easy for researchers to apply these tests in their ow. analyses using standard statistical softw.re packages.

关键词： Gould testing apply