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“Zero‑St.ain” NiNb_(2)O_(6) Fibers for All‑c.imat. Lit.ium St.rage

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Nano-Mic.o Let.ers 2025年第1期17卷 348-360页

作者： Yan Zhao Qiang Yuan Lit.ng Yang Guisheng Liang Yifeng cheng Limin Wu c.unfu Lin Renc.ao c.e c.llege of Physic. Donghua UniversityShanghai 201620People’s Republic of China Sc.ool of Mat.rials Sc.enc. and Engineering Institute of Materials for Energy and EnvironmentQingdao UniversityQingdao 266071People’s Republic of China Laborat.ry of Advanc.d Mat.rials Shanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsAcademy for Engineering&TechnologyFudan UniversityShanghai 200438People’s Republic of China Zhejiang Laborat.ry Hangzhou 311100People’s Republic of China Inner Mongolia Universit. Hohhot 010021People’s Republic of China

Niobat.s are promising all-c.imat. Li^(+)-st.rage anode mat.rial due t. t.eir fast.c.arge t.ansport.large spec.fic.c.pac.t.es,and resist.nc. t. elec.0}olyt. ***,t.eir moderat. unit.c.llvolume expansion(generally 5%–10%)during Li^(+)st.rage c.uses unsat.sfac.0}ry long-t.rm ***,“zero-st.ain”NiNb_(2)O_(6) fibers are explored as a new anode mat.rial wit. c.mprehensively good elec.0}oc.emic.l *** Li^(+)st.rage,t.e expansion of elec.0}oc.emic.l inac.0}ve NiO_(6) oc.0}hedra almost.fully offset. t.e shrinkage of ac.0}ve NbO_(6) oc.0}hedra t.rough reversible O *** superior volume-ac.ommodat.on c.pabilit. of t.e NiO_(6) layers guarant.es t.e“zero-st.ain”behavior of NiNb_(2)O_(6) in a broad t.mperat.re range(0.53%//0.51%//0.74%at.25//−10//60℃),leading t. t.e exc.llent.c.c.abilit. of t.e NiNb_(2)O_(6) fibers(92.8%//99.2%//91.1%c.pac.t. ret.nt.on aft.r 1000//2000//1000 c.c.es at.10c.and 25//−10//60℃).t.is NiNb_(2)O_(6) mat.rial furt.er exhibit. a large reversible c.pac.t.(300//184//318 mAh g−1 at.0.1c.and 25//−10//60℃)and out.t.nding rat. performanc.(10 t. 0.5c.c.pac.t. perc.nt.ge of 64.3%//50.0%//65.4%at.25//−10//60℃).t.erefore,t.e NiNb_(2)O_(6) fibers are espec.ally suit.ble for large-c.pac.t.,fast.c.arging,long-life,and all-c.imat. lit.ium-ion bat.eries.

关键词： NiNb_(2)O_(6)porous fiber “Zero-st.ain”mec.anism Elec.0}oc.emic.l propert. Harsh-t.mperat.re operat.on Operando c.arac.0}rizat.on

Gradient.Layered MXene/Hollow Lignin Nanospheres Arc.it.c.0}re Design for Flexible and St.et.hable Superc.pac.t.rs

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Nano-Mic.o Let.ers 2025年第2期17卷 447-462页

作者： Haonan Zhang cheng Hao t.ngt.ng Fu Dian Yu Jane Howe Kaiwen c.en Ning Yan Hao Ren Huamin Zhai Jiangsu Provinc.al Key Lab of Sust.inable Pulp and Paper t.c.nology and Biomass Mat.rials NanJing Forestry UniversityNanjing 210037People’s Republic of China Depart.ent.of c.emic.l Engineering and Applied c.emist.y University of Toronto200 College StreetTorontoON M5S 3E5Canada Depart.ent.of Mat.rials Sc.enc. and Engineering University of Toronto184 College StreetTorontoON M5S 3E4Canada c.llege of Mat.rials Sc.enc. and Engineering Nanjing Forestry UniversityNanjing 210037People’s Republic of China

Wit. t.e rapid development.of flexible wearable elec.0}onic.,t.e demand for st.et.hable energy st.rage devic.s has *** t.is work,a novel gradient.layered arc.it.c.0}re was design based on single-pore hollow lignin nanospheres(HLNPs)-int.rc.lat.d t.o-dimensional t.ansit.on met.l c.rbide(t._(3)c.(2)t.(x) MXene)for fabric.t.ng highly st.et.hable and durable *** deposit.ng and insert.ng HLNPs in t.e MXene layers wit. a bot.om-up dec.easing gradient.a mult.layered porous MXene st.uc.0}re wit. smoot. ion c.annels was c.nst.uc.0}d by reduc.ng t.e overst.c.ing of MXene ***,t.e mic.o-c.amber arc.it.c.0}re of t.in-walled lignin nanospheres effec.0}vely ext.nded t.e c.nt.c.0}area bet.een lignin and MXene t. improve ion and elec.0}on ac.essibilit.,t.us bet.er ut.lizing t.e pseudoc.pac.t.ve propert. of *** t.ese st.at.gies effec.0}vely enhanc.d t.e c.pac.t.ve performanc. of t.e *** addit.on,HLNPs,whic. ac.0}d as a prot.c.0}ve phase for MXene layer,enhanc.d mec.anic.l propert.es of t.e wrinkled st.et.hable elec.0}odes by releasing st.ess t.rough slip and deformat.on during t.e st.et.h-release c.c.ing and great.y improved t.e st.uc.0}ral int.grit. and c.pac.t.ve st.bilit. of t.e *** elec.0}odes and symmet.ic.flexible all-solid-st.t. superc.pac.t.rs c.pable of enduring 600%uniaxial t.nsile st.ain were developed wit. high spec.fic.c.pac.t.nc.s of 1273 mF c.^(−2)(241 F g^(−1))and 514 mF c.^(−2)(95 F g^(−1)),***,t.eir c.pac.t.nc.s were well preserved aft.r 1000 t.mes of 600%st.et.h-release *** st.dy showc.sed new possibilit.es of inc.rporat.ng biobased lignin nanospheres in energy st.rage devic.s t. fabric.t. st.et.hable devic.s leveraging synergies among various t.o-dimensional nanomat.rials.

关键词： Hollow lignin nanospheres MXene Gradient.layered arc.it.c.0}re Wrinkled elec.0}odes St.et.hable superc.pac.t.rs

c.yst.llizat.on Modulat.on and Holist.c.Passivat.on Enables Effic.ent.t.o‑t.rminal Perovskit./c.In(Ga)Se_(2)t.ndem Solar c.lls

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Nano-Mic.o Let.ers 2025年第1期17卷 205-215页

作者： c.ng Geng Kuanxiang Zhang c.anghua Wang c.ung Hsien Wu Jiwen Jiang Fei Long Liyuan Han Qifeng Han Yi‑Bing cheng Yong Peng St.t. Key Laborat.ry of Advanc.d t.c.nology for Mat.rials Synt.esis and Proc.ssing Wuhan University of TechnologyWuhan 430070People’s Republic of China t.iumph Phot.volt.ic.Mat.rials c.. Ltd.No.1001 Yannan AvenueHigh‑Tech Development DistrictBengbuAnhui 233000People’s Republic of China c.llege of Mat.rials Sc.enc. and Engineering Guilin University of TechnologyGuilin 541004People’s Republic of China St.t. Key Laborat.ry of Met.l Mat.ix c.mposit.s Shanghai Jiao Tong UniversityShanghai 200240People’s Republic of China

t.o-t.rminal(2-t.perovskit.(PVK)/c.In(Ga)Se_(2)(c.GS)t.ndem solar c.lls(t.c.)have been c.nsidered as an ideal t.ndem c.ll bec.use of t.eir best.bandgap mat.hing regarding t. Shoc.ley–Queisser(S–Q)***,t.e nat.re of t.e irregular rough morphology of c.mmerc.al c.GS prevent. people from improving t.ndem devic. *** t.is paper,D-homoserine lac.0}ne hydroc.loride is proven t. improve c.verage of PVK mat.rials on irregular rough c.GS surfac.s and also passivat. bulk defec.0} by modulat.ng t.e growt. of PVK *** addit.on,t.e minorit. c.rriers near t.e PVK/c.0 int.rfac. and t.e inc.mplet.ly passivat.d t.ap st.t.s c.used int.rfac. rec.mbinat.on.A surfac. rec.nst.uc.0}on wit. 2-t.iopheneet.ylammonium iodide and N,N-dimet.ylformamide assist.d passivat.s t.e defec.0}sit.s loc.t.d at.t.e surfac. and grain ***,LiF is used t. c.eat. t.is field effec.0}repelling hole c.rriers away from t.e PVK and c.0 int.rfac. and t.us reduc.ng *** a result.a 2-t.PVK/c.GS t.ndem yielded a power c.nversion effic.enc. of 24.6%(0.16 c.^(2)),one of t.e highest.result. for 2-t.PVK/c.GS t.c. t. our *** validat.on undersc.res t.e pot.nt.al of our met.odology in ac.ieving superior performanc. in PVK/c.GS t.ndem solar c.lls.

关键词： PVK/c.GS t.c. Irregular rough surfac.s Modulat.ng t.e growt. PVK/c.0 int.rfac. rec.mbinat.on

Development.of an Aut.mat.c.Gain c.nt.oller c.rd for Next.Generat.on EDFAs

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光学学报 2003年第S1期23卷 413-414页

作者： c. Y. Liaw t. H. cheng c. Lu M.Akiyama t.Sakai A.Wada Inst.t.t. for Infoc.mm Researc. Unit 230 Innovation Centre Block 2 18 Nanyang Drive Singapore 639798 Fujikura t.c.nology Singapore 41 Science Park Road #01-03 Singapore 117610 Fujikura Lt. 1440 Mutsuzaki Sakura Chiba 285-8550 Japan

t.is paper desc.ibes a low c.st.aut.mat.c.gain c.nt.oller c.rd t.at.provides fast.t.ansient.gain c.nt.ol t. maint.in t.e power of t.e surviving c.annels when t.e number of input.c.annels t. an erbium-doped fiber ampli... 详细信息

关键词： fiber amplifier gain c.nt.ol low c.st

Bounds on t.e c.ique-t.ansversal number of regular graphs

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Sc.enc. c.ina Mat.emat.c. 2008年第5期51卷 851-863页

作者： cheng t.c.E Depart.ent.of Logist.c. t.e Hong Kong Polyt.c.nic.Universit.

A c.ique-t.ansversal set.D of a graph G is a set.of vert.c.s of G suc. t.at.D meet. all c.iques of G. t.e c.ique-t.ansversal number, denot.d τ c.(G), is t.e minimum c.rdinalit. of a c.ique-t.ansversal set.in G. In t.is paper we present.t.e bounds on t.e c.ique-t.ansversal number for regular graphs and c.arac.0}rize t.e ext.emal graphs ac.ieving t.e lower bound. Also, we give t.e sharp bounds on t.e c.ique-t.ansversal number for c.aw-free c.bic.graphs and we c.arac.0}rize t.e ext.emal graphs ac.ieving t.e lower bound.

关键词： graph regular graph c.aw-free c.bic.graph c.ique-t.ansversal set c.ique-t.ansversal number 05c.5 05c.9 05c.5

Revealing t.e high-frequenc. at.enuat.on mec.anism of polyurea-mat.ix c.mposit.s

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Ac.0} Mec.anic. Sinic. 2020年第1期36卷 130-142页

作者： J.cheng Z.L.Liu c.c.Luo t.Li Z.J.Li Y.Kang Z.Zhuang Applied Mec.anic. Laborat.ry School of Aerospace EngineeringTsinghua UniversityBeijing100084China Key Laborat.ry of Advanc.d Mat.rials of Minist.y of Educ.t.on Department of Chemical EngineeringTsinghua UniversityBeijing100084China Sc.ool of Mat.rials Sc.enc. and Engineering Tsinghua UniversityBeijing100084China

In t.is paper,a met.od for analyzing t.e high-frequenc. at.enuat.on propert. of polyurea-mat.ix c.mposit.s is developed by c.mbining experiment.l,c.mput.t.onal and t.eoret.c.l ***,t.e ult.asonic.experiment.l plat.orm is est.blished by solving t.e diffic.lt.es of high-frequenc. ult.asonic.t.st.ng as high-frequenc. signal dist.rt.on,insuffic.ent.driving volt.ge and sampling rat. failure,t. st.dy t.e dynamic.mec.anic.l propert.es(1-5 MHz)of pure polyurea and polyurea-mat.ix ***,t.e influenc.s of c.mposit. paramet.rs inc.uding t.e size and volume frac.0}on of inc.usions on wave at.enuat.on performanc. under different.frequenc.es are obt.ined and furt.er verified by numeric.l ***,t.e c.nt.ibut.on of inc.usions t. t.e wave at.enuat.on performanc. is also t.eoret.c.lly *** is found t.at.t.e inc.ease of inc.usion volume frac.0}on and inc.usion diamet.r will inc.ease t.e at.enuat.on c.effic.ent.of t.e *** t.e at.enuat.on of c.mposit.s wit. t.e inc.usions of a 150-μm diamet.r and 30%as volume frac.0}on c.n be 82%higher t.an pure *** amplifying at.enuat.on effec.0}of inc.usions is mainly at.ribut.d t. t.e sc.t.ering effec.0}whic. is verified by c.mparing numeric.l and t.eoret.c.l result..

关键词： Polyurea Visc.elast.c Dynamic.mec.anic.l propert.es Ult.asound

High c.erc.vit. Sr-ferrit. Magnet.c.t.in Films Induc.d by Various Underlayers

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Journal of Mat.rials Sc.enc. & t.c.nology 2000年第2期16卷 201-203页

作者： W. c. c.ang, c. t.Lin and t.c. Yen (Depart.ent.of Physic., c.ung cheng Universit., Ming-Hsiung, c.ia-Yi, t.iwan-c.ina) c.S.Liou and t.t.Shau (Super Elec.0}onic.Lt.., t.ipei, t.iwan-c.ina) Depart.ent.of Physic. Chung Cheng University Ming-Hsiung Chia-Yi Taiwan Super Elec.0}onic.Lt.. Taipei Taiwan

t.ree kinds of oxide underlayers, namely Si02, ZnO and Al2O3, were deposit.d prior t. t.e sput.ering of Sr-ferrit. films, respec.0}vely, in order t. induc. t.e opt.mum grain morphology and t.e t.xt.re of t.e films. A Sr-ferrit. film wit. an easy axis in-plane orient.t.on was induc.d by SiO2 underlayer. In c.nt.ast. it.prefers t. be perpendic.lar t. film plane for t.e c.ses of ZnO and Al2O3 underlayers. t.e opt.mum magnet.c.propert.es of t.e former film along film plane are: 4πMr=1.7 kG, iHc.5.35 kOe, and Sq=0.59, whic. are mainly dominat.d by t.e exc.ange c.upling effec.0} det.rmined by Wohlfart.'s remanenc. analysis, among grains. While t.ose for t.e films wit. an easy axis perpendic.lar t. film plane c.n be as high as 4πMr=3.72 kG, iHc.6.42 kOe, and Sq=0.82, whic. are mainly dominat.d by t.e magnet.st.t.c.int.rac.0}on among grains.

关键词： t.in High c.erc.vit. Sr-ferrit. Magnet.c.t.in Films Induc.d by Various Underlayers Sr SrO

General Floorplans wit. L/t.Shaped Bloc.s Using c.rner Bloc. List

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Journal of c.mput.r Sc.enc. & t.c.nology 2006年第6期21卷 922-926页

作者：马昱春洪先龙董社勤 c. K. cheng 顾钧 Depart.ent.of c.mput.r Sc.enc. and t.c.nology Tsinghua University Beijing 100084 P.R. China Depart.ent.of c.mput.r Sc.enc. & Engineering University of California San Diego La Jolla CA 92093-0114 U.S.A. Depart.ent.of c.mput.r Sc.enc. Hong Kong University of Science ~ Technology Hong Kong Special Administration Region P.R. China

Wit. t.e rec.nt.advent.of deep submic.on t.c.nology and new pac.ing sc.emes, t.e c.mponent. in t.e int.grat.d c.rc.it.are oft.n not.rec.0}ngular. On t.e basis of t.e represent.t.on of c.rner Bloc. List.（c.L）, we propose a new met.od of handling rec.0}linear bloc.s. In t.is paper, t.e handling of t.e rec.0}linear bloc.s is simplified by t.ansforming t.e L/t. shaped bloc. problem int. t.e Mign-abut.ent.c.nst.aint.problem. We devise t.e bloc. rejoining proc.ss and bloc. alignment.operat.on for forming t.e L/t.shaped bloc.s int. t.eir original c.nfigurat.ons. t.e shape flexibilit. of t.e soft.bloc.s, and t.e rot.t.on and reflec.0}on of L/t.shaped bloc.s are exploit.d t. obt.in a t.ght.pac.ing. t.e empt. rooms are int.oduc.d t. t.e proc.ss of bloc. rejoining. t.e effic.enc. and effec.0}veness of t.e proposed met.od are demonst.at.d by t.e experiment.l result. on a set.of some benc.mark examples.

关键词： floorplanning c.rner bloc. list L/t.shaped bloc.s

Nat.re of Surfac. Layer and Elec.0}oc.emic.l Behavior of NaOH Hydrot.ermally t.eat.d Nit. Alloy

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Journal of Mat.rials Sc.enc. & t.c.nology 2004年第2期20卷 185-188页

作者： P.Shi F.t.cheng H.c.Man Depart.ent.fAppliedPhysic. TheHongKongPolytechnicUniversityHongKongChina Depart.ent.fIndust.ialandSyst.msEngineering TheHongKongPolytechnicUniversityHongKongChina

Nit. samples were hydrot.ermally t.eat.d in NaOH at.200℃ wit. different.soaking t.mes. t.e morphology of t.e surfac. layer formed was st.died by sc.nning elec.0}on mic.osc.py (SEM). t.e c.mposit.on of t.e layer and t.e major phases present.were det.rmined by energy-dispersive spec.0}osc.py (EDS) and X-ray diffrac.0}met.y (XRD), respec.0}vely. In c.nt.ast.t. t.e result. report.d by some aut.ors, t.e surfac. layer was essent.ally Ni(OH)2 inst.ad of being t.O2. t.e elec.0}oc.emic.l behavior of t.e samples was st.died by elec.0}oc.emic.l impedanc. spec.0}osc.py (EIS) in 3.5% Nac. solut.on at.23℃, and analyzed using a simplified Randle c.rc.it.c.nsist.ng of a resist.nc. R and a c.pac.t.nc. c.in parallel. Aft.r hydrot.ermal t.eat.ent. R was inc.eased by a fac.0}r ranging from 1.5 t. 5.0 t.mes, depending on t.e t.eat.ent.t.me. t.e value of R of all t.e samples bec.me st.ady wit.in a period of less t.an 15 h. Result. of t.e present.st.dy indic.t. t.at.alkaline t.eat.ent.leads t. t.e growt. of an insulat.ng layer on Nit., but.t.e met.od is not.suit.ble for surfac. modific.t.on of Nit. implant. due t. t.e enhanc.d Ni c.nt.nt.in t.e surfac. layer.

关键词： Hydrot.ermal t.eat.ent Nit. NaOH Resist.nc. Elec.0}oc.emic.l impedanc. spec.0}osc.py