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2.5μm.Thick Ultrastrong Asy.0}etric Separator for Stable Lithium.m.tal Batteries

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Energy.& Environm.ntal m.terials 2024年第6期7卷 106-117页

作者： Donghao Xie Zekun Wang Xin m. y.chen Feng Xiaom.n Tang Qiao gu y.nghong Deng Ping Gao Advanced m.terials Thrust Interdisciplinary OfficeThe Hong Kong University of Science and TechnologyClear Water BayHong Kong999077 China Departm.nt of Chem.cal and Biological Engineering The Hong Kong University of Science and TechnologyClear Water BayHong Kong 999077China Advanced m.terials Thrust Function HubThe Hong Kong University of Science and Technology(Guangzhou)Nansha DistrictGuangzhou 511453China Departm.nt of m.terials Science and Engineering Southern University of Science and TechnologyShenzhen 518055China

Lithium.m.tal batteries(Lm.s)are considered the ideal choice for high volum.tric energy.density.lithium.ion batteries,but uncontrolled lithium.deposition poses a significant challenge to the stability.of such *** this paper,we introduce a 2.5μm.thick asy.0}etric and ultrastrong separator,which can induce tissue-like lithium.*** asy.0}etric separator,denoted by.utPE@Cu_(2)O,was prepared by.selective sy.thesis of Cu_(2)O nanoparticles on one of the outer surfaces of a nanofibrous(diam.ter~10 nm.ultrastrong ultrahigh m.lecular weight poly.thy.ene(UHm.PE)*** analy.is shows that the lithium.deposits have tissue-like m.rphology.resulting in the sy.0}etric lithium.cells assem.led using utPE@Cu_(2)O with sy.0}etric Cu_(2)O coating exhibiting stable perform.nce for over 2000 h of *** work dem.nstrates the feasibility.of a facile approach ultrathin separators for the deploy.0}nt of lithium.m.tal batteries,providing a pathway.towards enhanced battery.perform.nce and safety.

关键词： in situ SEI lithium.deposition regulation separator ultrastrong ultrathin

Plasm.‐oxidized 2D m.enes subnanochannel m.m.rane for high‐perform.nce osm.tic energy.conversion

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Carbon Energy 2024年第8期6卷 178-191页

作者： Zhengm.o Ding Tiancheng gu Rui Zhang Shouy. Sun Kaiqiang Wang Hanli Zhang Jinjin Li y.njun Luo State Key.Laboratory.of Tribology.in Advanced Equipm.nt Tsinghua UniversityBeijingChina Key.Laboratory.of High Energy.Density.m.terials Ministry of EducationBeijing Institute of TechnologyBeijingChina Departm.nt of Engineering m.chanics Northwestern Polytechnical University(Chang'an Campus)Xi'anChina

Nanofluidic channels inspired by.electric eels open a new era of efficient harvesting of clean blue osm.tic energy.from.salinity.*** by.less charge and weak ion selectivity.of the raw m.terial itself,energy.conversion through nanofluidic channels is still facing considerable ***,a facile and efficient strategy.to enhance osm.tic energy.harvesting based on drastically.increasing surface charge density.of m.enes subnanochannels via oxy.en plasm. is *** plasm. could break Ti–C bonds in the m.enes subnanochannels and effectively.facilitate the form.tion of m.re Ti–O,C═O,O–OH,and rutile with a stronger negative charge and work function,which leads the surface potential of m.enes m.m.rane to increase from.205 to 430 *** significant rise of surface charge endows the m.enes m.m.rane with high cation selectivity.which could m.ke the output power density.of the m.enes m.m.rane increase by.248.2%,reaching a high value of 5.92Wm.(−2)in the artificial sea‐river water ***,with the assistance of low‐quality.heat at 50℃,the osm.tic power is enhanced to an ultrahigh value of 9.68Wm.(−2),which outperform. those of the state‐of‐the‐art two‐dim.nsional(2D)nanochannel *** exciting breakthrough dem.nstrates the enorm.us potential of the facile plasm.‐treated 2D m.m.ranes for osm.tic energy.harvesting.

关键词： ion transport m.enes m.m.ranes osm.tic energy.harvesting plasm. two‐dim.nsional nanochannels

Hy.rid-Vlasov sim.lation of soft X-ray.em.ssions at the Earth’s day.ide m.gnetospheric boundaries

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Earth and Planetary.Phy.ics 2024年第1期8卷 70-88页

作者： m.Grandin H.K.Connor S.Hoilijoki m.Battarbee y.Pfau-Kem.f U.Ganse K.Papadakis m.Palm.oth Departm.nt of Phy.ics University of HelsinkiHelsinkiFinland NASA Goddard Space Flight Center GreenbeltMD20771USA Space and Earth Observation Centre Finnish Meteorological InstituteHelsinkiFinland

Solar wind charge exchange produces em.ssions in the soft X-ray.energy.range which can enable the study.of near-Earth space regions such as the m.gnetopause,the m.gnetosheath and the polar cusps by.rem.te sensing *** Solar wind m.gnetosphere Ionosphere Link Explorer(Sm.LE)and Lunar Environm.nt heliospheric X-ray.Im.ger(LEXI)m.ssions aim.to obtain soft Xray.im.ges of near-Earth space thanks to their Soft X-ray.Im.ger(SXI)*** earlier m.deling works have already.sim.lated soft X-ray.im.ges as m.ght be obtained by.Sm.LE SXI during its m.ssion,the num.rical m.dels used so far are all based on the m.gnetohy.rody.am.cs description of the space *** investigate the possible signatures of ion-kinetic-scale processes in soft Xray.im.ges,we use for the first tim. a global hy.rid-Vlasov sim.lation of the geospace from.the Vlasiator *** sim.lation is driven by.fast and tenuous solar wind conditions and purely.southward interplanetary.m.gnetic *** first produce global X-ray.im.ges of the day.ide near-Earth space by.placing a virtual im.ging satellite at two different locations,providing m.ridional and equatorial *** then analy.e regional features present in the im.ges and show that they.correspond to signatures in soft X-ray.em.ssions of m.rrorm.de wave structures in the m.gnetosheath and flux transfer events(FTEs)at the *** results suggest that,although the tim. scales associated with the m.tion of those transient phenom.na will likely.be significantly.sm.ller than the integration tim. of the Sm.LE and LEXI im.gers,m.rror-m.de structures and FTEs can cum.latively.produce detectable signatures in the soft X-ray.*** instance,a local increase by.30%in the proton density.at the day.ide m.gnetopause resulting from.the transit of m.ltiple FTEs leads to a 12%enhancem.nt in the line-of-sight-and tim.-integrated soft X-ray.em.ssivity.originating from.this ***,a proton density.increase by.14%in the m.gnetosheath

关键词： m.gnetosphere m.gnetosheath num.rical sim.lation Sm.LE LEXI soft X-ray.em.ssions hy.rid-Vlasov m.del polar cusp flux transfer events m.rror-m.de waves

Differential bonding behaviors of sodium.potassium.ion storage in sawdust waste carbon derivatives

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Chinese Chem.cal Letters 2024年第4期35卷 496-501页

作者： Jun-m.ng Cao Kai-y.ng Zhang Jia-Lin y.ng Zhen-y. gu Xing-Long Wu m.E Key.Laboratory.for UV Light-Em.tting m.terials and Technology Northeast Normal UniversityChangchun 130024China Departm.nt of Chem.stry Northeast Normal UniversityChangchun 130024China

Sodium.ion batteries(SIBs) and potassium.ion batteries(PIBs) are the m.st prom.sing alternatives to lithium.ion batteries, and thus have drawn intensive research attention. Porous carbon m.terials from.different precursors have been widely.used as anode m.terials owing to their com.atible storage effectiveness of both larger radii sodium.and potassium.ions. However, the differential bonding behaviors of Na and K ions with porous carbon-based anode are the significant one worth investigating, which could provide a clean picture of alkali ions storage m.chanism. Therefore, in this work, we prepare a porous carbon network derived from.sawdust(SDC) wastes, to further analy.e the differences on sodium.and potassium.ions storage behaviors in term. of bond-form.ng process. It is found that, as-prepared SDC anodes could deliver stable sodium.and potassium.storage capacities, however, there are notable distinctions in term. of electrochem.cal behaviors and diffusion processes. By.virtue of ex-situ XRD and Ram.n spectroscopy. the phase transition reaction of potassium.ions could be well-observed, and the results shows that the m.ltiple intercalated com.ounds was form.d in SDC network during ions insertion, further resulting in slower diffusion kinetics and larger resistance com.ared to non-bonded process of sodium.ions storage. This study.provides m.re insights into the differences between sodium.and potassium.ions storage, as well as the energy.storage m.chanism.of porous carbon as anodes for secondary.batteries.

关键词： Porous carbon Sodium.ion storage Potassium.ion storage Bonding behaviors Batteries

Greatly.enhanced corrosion/wear resistances of epoxy.coating for m. alloy.through a sy.ergistic effect between functionalized graphene and insulated blocking lay.r

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Journal of m.gnesium.and Alloy. 2024年第1期12卷 332-344页

作者： Z.y.Xue X.J.Li J.H.Chu m.m.Li D.N.Zou L.B.Tong School of m.tallurgical Engineering Xi’an University of Architecture and TechnologyXi’an 710055China State Key.Laboratory.of Advanced Design and m.nufacturing for Vehicle Body Hunan UniversityChangsha 410082China

The poor corrosion and wear resistances of m. alloy. seriously.lim.t their potential applications in various *** conventional epoxy.coating easily.form. m.ny.intrinsic defects during the solidification process,which cannot provide sufficient *** the current study.we design a double-lay.r epoxy.com.osite coating on m. alloy.with enhanced anti-corrosion/wear properties,via the spin-assisted assem.ly.*** outer lay.r is functionalized graphene(FG)in waterborne epoxy.resin(WEP)and the inner lay.r is Ce-based conversion(Ce)*** FG sheets can be hom.geneously.dispersed within the epoxy.m.trix to fill the intrinsic defects and im.rove the barrier *** Ce film.connects the outer lay.r with the substrate,showing the transition *** corrosion rate of Ce/WEP/FG com.osite coating is 2131 tim.s lower than that of bare m. alloy.and the wear rate is decreased by.90%.The im.roved corrosion resistance is attributed to the laby.inth effect(hindering the penetration of corrosive m.dium.and the obstruction of galvanic coupling *** sy.ergistic effect derived from.the FG sheet and blocking lay.r exhibits great potential in realizing the im.rovem.nt of m.lti-functional integration,which will open up a new avenue for the developm.nt of novel com.osite protection coatings of m. alloy..

关键词： m. alloy Functionalized graphene Epoxy.coating Corrosion/wear resistance Blocking lay.r

Subsurface m.lti-phy.ical characterization of m.untain excavation and city.construction in loess plateau with a fiber-optic sensing sy.tem

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Journal of Rock m.chanics and Geotechnical Engineering 2024年第8期16卷 2935-2946页

作者： Jie Liu Bin Shi Kai gu m.ng-y. Sun Jun-Cheng y.o He-m.ng Han School of Earth Sciences and Engineering Nanjing UniversityNanjingJiangsu210023China Frontiers Science Center for Critical Earth m.terial Cy.ling Nanjing UniversityNanjing210023China School of Earth Sciences and Engineering Hohai UniversityNanjing210098China

m.untain excavation and city.construction(m.CC)projects being launched in the Loess Plateau in China involve the creation of large-scale artificial *** the subsurface evolution characteristics of the artificial land is essential,y.t ***,we use an im.roved fiber-optic m.nitoring sy.tem.for its subsurface m.lti-phy.ical *** sy.tem.enables us to gather spatiotem.oral distribution of various param.ters,including strata deform.tion,tem.erature,and ***’an New District was selected as a case study.to conduct refined in-situ m.nitoring through a 77 m.deep borehole and a 30 m.long *** reveal that the ground settlem.nt involves both the deform.tion of the filling loess and the underly.ng intact ***,the filling loess exhibits a stronger creep capability.com.ared to underly.ng intact *** deform.tion along the profile is unevenly.distributed,with a positive correlation with soil *** accum.lation has been observed at the interface between the filling loess and the underly.ng intact loess,leading to a significant ***,the tem.erature and m.isture in the filling loess have reached a new equilibrium.state,with their depths influenced by.atm.spheric conditions m.asuring at 31 m.and 26 m.*** refined investigation allows us to identify.critical lay.rs that m.tter the sustainable developm.nt of newly.created urban areas,and provide im.roved insights into the evolution m.chanism. of land creation.

关键词： m.untain excavation and city.construction Fiber-optic m.nitoring m.lti-phy.ical characterization Com.acted loess

Inclusion of CoTiO_(3) to am.liorate the re/dehy.rogenation properties of the m.–Na–Al sy.tem

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Journal of m.gnesium.and Alloy. 2024年第3期12卷 1215-1226页

作者： N.A.Ali N.y.y.snizam.N.A.Sazelee Sam.-ullah Rather Haizhen Liu m.Ism.il Energy.Storage Research Group Faculty of Ocean Engineering TechnologyUniversiti Malaysia Terengganu21030 Kuala NerusTerengganuMalaysia Departm.nt of Chem.cal and m.terials Engineering King Abdulaziz UniversityP.O.Box80204Jeddah 21589Saudi Arabia guangxi Novel Battery.m.terials Research Center of Engineering Technology School of Physical Science and TechnologyGuangxi UniversityNanning 530004China State Key.Laboratory.of Featured m.tal m.terials and Life-Cy.le Safety.for Com.osite Structures Nanning 530004China

For the first tim.,the m.H_(2)–NaAlH_(4)(ratio 4:1)destabilized sy.tem.with CoTiO_(3) addition has been *** CoTiO_(3)-doped m.H_(2)–NaAlH_(4) sam.le begins to dehy.rogenate at 130℃,which is declined by.40℃ com.ared to the undoped m.H_(2)–NaAlH_(4).m.reover,the de/rehy.rogenation kinetics characteristics of the CoTiO_(3)-doped m.H_(2)–NaAlH_(4) were greatly.*** the inclusion of CoTiO_(3),the m.H_(2)–NaAlH_(4) com.osite absorbed 5.2 wt.%H_(2),higher than undoped m.H_(2)–NaAlH_(4).In the context of dehy.rogenation,the CoTiO_(3)-doped m.H_(2)–NaAlH_(4) sam.le desorbed 2.6 wt.%H_(2),alm.st doubled com.ared to the am.unt of hy.rogen desorbed from.the undoped m.H_(2)–NaAlH_(4) *** activation energy.obtained by.the Kissinger analy.is for m.H_(2) decom.osition was significantly.lower by.35.9 kJ/m.l than the undoped m.H_(2)–NaAlH_(4) *** reaction m.chanism.dem.nstrated that new phases of m.Co and AlTi_(3) were generated in situ during the heating process and are likely.to play.a substantial cataly.ic function and be useful in am.liorating the de/rehy.rogenation properties of the destabilized m.H_(2)–NaAlH_(4) sy.tem.with the inclusion of CoTiO_(3).

关键词： Destabilize sy.tem m.gnesium.hy.ride Sodium.alanate Hy.rogen storage Additive.

Preparation and Characterization of Biobased Dehy.roabiety. Poly.thy.ene Gly.ol Gly.idy. Ether-Grafted Hy.roxy.thy. Cellulose with High Em.lsify.ng Property

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Journal of Renewable m.terials 2024年第1期12卷 103-117页

作者： Zhengqing Ding Quan y.ng Xiny.n y.n Feng gu Xujuan Huang Zhaosheng Cai School of Chem.cal and Chem.stry Yancheng Institute of TechnologyYancheng224051China

Dehy.roabiety. poly.thy.ene gly.ol gly.idy. ether-grafted hy.roxy.thy. cellulose(HEC)poly.0}r surfactant(DA(EO)5GE-g-HEC)was prepared using ring-opening poly.0}rization with biobased rosin and hy.roxy.thy. cellulose as *** poly.thy.ene gly.ol gly.idy. ether(DA(EO)5GE)was form.d by.condensation of dehy.roabiety. alcohol poly.xy.thy.ene ether(Rosin derivative:DA(EO)5H)and *** grafting degree of DA(EO)5GE-g-HEC was m.nipulated by.adjusting the m.ss ratio of HEC and DA(EO)5GE and confirm.d by.*** to the form.la,when m.HEC)/m.DA(EO)2GE)was 1:1~1:5,the grafting rate of DA(EO)5GE in DA(EO)5GE-g-HEC varied from.34.43%to 38.33%.The surface activity.and foam.properties of DA(EO)5GE-g-HEC aqueous solution were *** results showed that with the increase in grafting rate,the critical m.cellar concentration(Cm.)in aqueous solution changed from.1.28 to 0.96 g/*** results of the therm.gravim.tric analy.is showed that the tem.erature range of the m.in stage of m.ss loss of DA(EO)5GE-g-HEC was 310°C~410°C,and the therm.l decom.osition processes of the sam.les with five m.ss ratios were *** oil in water em.lsion was prepared by.choosing cy.lohexane as the oil phase and DA(EO)5GE-g-HEC as the *** effect of DA(EO)5GE-g-HEC m.ss fraction on em.lsion particle size and stability.was *** results suggested that when the oil-water ratio was 8:2 with 0.4%em.lsifier,the em.lsion droplets were the sm.llest in term. of particle size and were the m.st *** rheological test results showed that the apparent viscosity.decreased with the increase in shear rate and showed a ty.ical elastic gel phenom.non.

关键词： Rosin hy.roxy.thy. cellulose surfactant em.lsion rheological behaviour

Fixed Subgroups are not Com.ressed in Direct Products of Surface Groups

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Chinese Annals of m.them.tics,Series B 2024年第5期45卷 703-708页

作者： Qiang ZHANG Jianchun WU Fanling gu School of m.them.tics and Statistics Xi'an Jiaotong University Departm.nt of m.them.tics Soochow University School of m.them.tics and Statistics Xi'an Jiaotong University School of General Education Guangzhou College of Technology and Business

By.constructing counterexam.les, the authors show that the fixed subgroups are not com.ressed in direct products of free and surface groups, and hence negate a conjecture in [Zhang, Q., Ventura, E. and J. Wu, Fixed su... 详细信息

关键词： 20F34 20F65 57m.7 Com.ression Direct product Fixed subgroup Free group Inertia Surface group