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Assem.lage-based biom.nitoring of freshwater ecosy.tem.health via m.ltim.tric indices:A critical review and suggestions for im.roving their applicability

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Water Biology.and Security 2022年第3期1卷 28-42页

作者： Robert L.Vadas Jr. Robert m.Hughes y.on Jae Bae m.n Jeong Baek Orestes Carlos Bello Gonzáles m.rcos Callisto débora ReisdeCarvalho Kai chen m.ria T.Ferreira Pablo Fierro Jon S.Harding dana m.infante C.J.Kley.hans diego R.m.cedo isabela m.rtins Norm.n m.rcado Silva Nabor m.y. Susan J.Nichols Paulo S.Pom.eu Renata Ruaro deborah R.O.Silva R.Jan Stevenson Bianca de Freitas Terra Christa Thirion douglas Ticiani Lizhu Wang Chris O.y.der 2909 Boulevard Rd SEOlympiaWA98501-3971USA Am.is Opes institute 2895 SE GlennCorvallisOR97333USA d.partment of Fisheries Wildlife&Conservation SciencesOregon State UniversityCorvallisOR97331USA division of Environm.ntal Science&Ecological engineering Korea University145 Anam-roSeongbuk-guSeoul02841South Korea National institute of Biological Resources Ministry of Environment42 Hwangyeong-roSeo-guIncheon22689South Korea Centro de investigacion en Biodiversidad y.Conservacion Universidad Autonoma del Estado de Morelos1001Col.ChamilpaC.P62209CuernavacaMorelosMexico departam.nto de Genética Ecologia e EvoluçaoInstituto de Ciências BiologicaUniversidade Federal de Minas GeraisAvenida Ant^onio Carlos 6627CEP31270-901Belo HorizonteMGBrazil departam.nto de Ecologia e Conservaçao Universidade Federal de Lavras37200-900LavrasMGBrazil State Key.Laboratory.of m.rine Resource Utiliization in South China Sea Hainan UniversityHaikou570228China Forest Research Centre&Associate Laboratory.TERRA University of LisbonTapada da Ajuda1349-017LisbonPortugal instituto de Ciencias m.rinas y.Lim.ologicas Universidad Austral de ChileValdiviaChile School of Biological Sciences University of CanterburyPrivate Bag 4800Christchurch8140New Zealand d.partment of Fisheries&Wild.ife Michigan State University1405 South Harrison Road#318East LansingMI48823USA d.partment of Water Affairs and Forestry.retired) 8th Avenue 771Wonderboom South0084PretoriaSouth Africa departam.nto de Geografia Instituto de GeociênciasUniversidade Federal de Minas GeraisAvenida Antônio Carlos 6627CEP31270-901Belo HorizonteMGBrazil instituto Guaicuy 109 Rua BrasopolisBelo HorizonteMG31150-170Brazil Centro de investigación en Biodiversidad y.Conservación Universidad Autónoma del Estado de MorelosAvenida Universidad 1001Col.ChamilpaC.P.62209CuernavacaMorelosMexico instituto Experim.ntal de Biología Universidad San Francisco Xavier de ChuquisacaSucreBolivia Centre for Applied Water Science Un

Freshwater biota are m.re com.rehensive and direct indicators of biological im.acts,and m.re m.aningful to the public than water quality.or phy.ical habitat *** biotic data and the m.ltiple biological indicators developed from.them.offer a m.ch richer array.of data for assessing the im.acts of pollution controls than a lim.ted set of phy.ical or chemical *** recent decades,assem.lage-based assessm.nts by.ecologists,environm.ntal scientists,and water quality.agencies have been em.loy.d globally.for determ.ning the condition of,and threats to,freshwater ecosy.tem..A key.step in this advance has been the developm.nt of m.ltim.tric indices(m.is)or indices of biotic integrity.iBis)based on quantitative assessm.nts of algae,m.crophy.e,m.croinvertebrate,fish or riparian bird *** Europe,where biological assem.lages are m.ndated for assessing freshwater ecosy.tem.health,m.ny.indices are ***,the proliferation of m.is globally.has not alway. occurred through the application of rigorous study.designs and m.nitoring protocols,nor have they.alway. effectively.incorporated functional m.trics,stressor assessm.nts,and statistical ***,in this review,we discuss eleven m.jor concerns with the developm.nt and application(including logistical lim.tations)of m.ltim.tric indicators based on freshwater biota to encourage m.re rigorous and widely.applicable(transferable)m.i use and ***,our concerns focus on reference conditions;sam.ling effort,m.thods,and season;trophic guild definition;m.tric com.rehensiveness,options,screening and scoring;and m.i *** could also benefit from.increased attention to ecological m.chanism. and m.tric developm.nt,to further im.rove our understanding of anthropogenic im.acts as well as rehabilitation effects on freshwater ecosy.tem. *** closer attention to study.designs,ecological m.chanism. and m.tric developm.nt should further im.rove our understa

关键词： iBi m.i Fish m.croinvertebrates Algae Stream. Rivers Lakes Wetlands Biological m.nitoring

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Perform.nce of LEd with m.xed wavelengths or two-phase culture on the growth and lipid accum.lation of Chlorella py.enoidosa

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international Journal of Agricultural and Biological engineering 2021年第1期14卷 90-96页

作者： Bingquan Chu Jiewei Zhao Huim.n Zheng Jiny.n Gong Kai chen Suwan Zhang Gongnian Xiao y.ng He College of Biosy.tem. engineering and Food Science Zhejiang UniversityHangzhou 310058China School of Biological and chemical engineering Zhejiang University of Science and TechnologyHangzhou 310023China

Chlorella py.enoidosa,a ty.e of lipid-rich green algae,features broad prospects for application in such fields as healthy.foods,biodiesel and so *** light-utilizing efficiency.of the cells is a critical factor that influences the biom.ss and lipid contents of photoautotrophic *** illum.nation wavelengths hinder m.croalgal *** patterns about the im.acts of m.xed light em.tting diode(LEd)wavelengths or two-phase culture over the growth and lipid accum.lation of Chlorella py.enoidosa were *** the different LEd wavelengths(white,purple,blue,green,y.llow and red)at the light intensity.of 200μm.l/m.·s tested,red and green gave m.xim.m.biom.ss and lipid contents,*** on the discovery.two-phase(red was illum.nated for 12 d.in the first phase,and then shifted to green light for 8 d.in the second phase,R→G)or m.xed LEd(R:G=3:7 or R:G=7:3)culture protocol was adopted for the high lipid-accum.lation of Chlorella *** results indicated that the lipid contents of Chlorella py.enoidosa treated with two-phase(R→G)or m.xed LEd culture was significantly.higher than that of white light with the sam. intensity.pd the highest lipid-accum.lation rate was 26.37 m./L·d.in the two-phase *** acid(FA)analy.is showed that 13 ty.es FAs were detected and unsaturated FAs were over 50%(w/w).26.8%-27.7%(w/w)palm.tic acid(C16:0)was the m.jor saturated FA,while the largest proportions of m.nounsaturated FA and poly.nsaturated FA were oleic acid(C18:1)and linoleic acid(C18:2),***,although no difference in the FA com.osition of Chlorella py.enoidosa treated with different protocols was found,the absolute content did differ significantly.coinciding with that of the total ***,the ratio of unsaturated FAs in Chlorella py.enoidosa was significantly.increased under the m.xed LEd(R:G=7:3)(p<0.05).

关键词： Chlorella py.enoidosa m.xed LEd wavelength two-phase biom.ss lipid fatty.acid

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im.roving current and m.tigating energy.loss in ternary.organic photovoltaics enabled by.two well-com.atible sm.ll m.lecule acceptors

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Science China Chem.stry 2021年第4期64卷 608-615页

作者： y.nna Sun Huan-Huan Gao Sim.n Wu Lingxian m.ng Xiangjian Wan m.ngy.ng Li Zaifei m. Ziqi Guo Shitong Li Hongtao Zhang chenxi Li y.ngsheng chen State Key.Laboratory.and.institute of Elem.nto-Organic Chem.stry The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer MaterialsInstitute of Polymer ChemistryRenewable Energy Conversion and Storage CenterCollege of ChemistryNankai UniversityTianjin 300071China Center for Advanced Low-dim.nsion m.terials Stage Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of Materials Science and EngineeringDonghua UniversityShanghai 201620China

Ternary.organic photovoltaic(OPV)strategy.is an effective but facile approach to enhance the photovoltaic perform.nce for single-junction ***,a series of ternary.OPVs were fabricated by.em.loy.ng a wide bandgap donor(PBdB-TF)and two acceptor-donor-acceptor(A-d-A)-ty.e nonfullerene sm.ll m.lecule acceptors(NF-Sm.s,called F-2 Cl and 3 TT-OCiC).As the third com.onent,the near-infrared Sm.,3 TT-OCiC,has com.lem.ntary.absorption spectrum.narrow bandgap and wellcom.atible cry.tallization property.to the host acceptor(F-2 Cl)for efficient ternary.*** these,the optim.l ternary.devices y.eld significantly.enhanced power conversion efficiency.of 15.23%,one of the very.few exam.les with PCE higher than15%other than y. *** is m.inly.attributed to the increased short-circuit current density.of 24.92 m.A cm.(-2) and dram.tically.decreased energy.loss of 0.53 e *** work presents a successful exam.le for sim.ltaneously.im.roving current,m.nim.zing energy.loss and together with m.dify.ng the m.rphology.of active lay.rs in OPVs,which will contribute to the further construction of high perform.nce ternary.OPVs.

关键词： organic photovoltaics ternary.devices sm.ll m.lecule acceptors film.m.rphology energy.loss

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3d打印柔性SiO_(2)气凝胶复合材料的研究

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硅酸盐通报 2024年第5期43卷 1756-1763页

作者：陈浩储成义王雨婷鲍希希邱琢皓程昱川郭建军单兴刚孙爱华宁波大学材料科学与化学工程学院宁波315211 中国科学院宁波材料技术与工程研究所浙江省增材制造材料重点实验室宁波315201 浙江理工大学科技与艺术学院绍兴312369

SiO_(2)气凝胶因特殊网络结构而存在优异的性质,如高比表面积、高孔隙率、低热导率和低密度,是优异的保温绝热材料。但SiO2气凝胶机械性能脆弱,导致传统制造方法难以制备复杂和微小型构件,极大地阻碍了SiO_(2)气凝胶在隔热领域的发展和... 详细信息

SiO_(2)气凝胶因特殊网络结构而存在优异的性质,如高比表面积、高孔隙率、低热导率和低密度,是优异的保温绝热材料。但SiO2气凝胶机械性能脆弱,导致传统制造方法难以制备复杂和微小型构件,极大地阻碍了SiO_(2)气凝胶在隔热领域的发展和应用。本文通过3d打印直写技术制备了柔性SiO_(2)气凝胶复合材料,通过研究不同聚乙烯醇(PVA)溶液和十八酸钠(C_(17)H_(35)COONa)的含量,找到最佳浆料配比,打印的柔性SiO_(2)气凝胶复合材料在100℃下的热导率低至0.026 W/(m.K),同时具有较好的压缩性能、弯曲性能和疏水性。这项研究为SiO_(2)气凝胶的规模化应用提供一种可能。

关键词：气凝胶 SiO_(2) 3d打印柔性低热导率疏水

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The Study.on Bam.oo m.crofibers isolated by.Steam.Explosion and Their Com.rehensive Properties

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Journal of Renewable m.terials 2023年第6期11卷 2809-2822页

作者： Qiushi Li Ronggang Luo y. chen Jinhui Xiong Bei Qiao Xijuan Chai Linkun Xie Juan Wang Lianpeng Zhang Siqun Wang Guanben du Kaim.ng Xu y.nnan Provincial Key.Laboratory.of Wood Adhesives and Glued Products Southwest Forestry UniversityKunming650224China international Joint Research Center for Biom.ss m.terials Ministry of Science and TechnologySouthwest Forestry UniversityKunming650224China Key.Laboratory.for Forestry.Resources Conversion and Utilization in the Southwest m.untains of China Ministry of EducationSouthwest Forestry UniversityKunming650224China Center for Renewable Carbon The University of TennesseeKnoxvilleTN37996USA

To overcom. the shortage of wood resources as well as to develop novel natural fibers m.terials,the Chim.nobam.usa quadrangularis(CQ)and Qiongzhuea tum.dinoda(QT)planted.in Southwest China were effectively.isolated by.the steam.explosion(SE).The fine and uniform.bam.oo m.crofibers derived from.CQ and QT were obtained,and their sm.llest average widths were 12.62μm.and 16.05μm.*** effects of steam.explosion on the m.cro-m.rphology.chemical com.osition,therm.l stability.cry.tallinity.surface wettability.and m.chanical properties of bam.oo m.crofibers were com.rehensively.*** results showed that the relative content of cellulose in bam.oo m.crofibers increased but the hem.cellulose and lignin contents decreased after *** degrees of cry.tallinity.for CQ and QT increased from.40.49%and 39.46%to 68.90%and 55.78%,*** therm.l stability.and surface hy.rophilicity.were also *** CQ m.crofibers had a m.xim.m.decom.osition tem.erature of 2.79°C,a tensile strength of 58.54 m.a,an elongation at break of 0.6%,and a water contact angle of 2.7°higher than those of the QT m.crofibers.

关键词： m.crofiber properties bam.oo steam.explosion Chim.nobam.usa quadrangularis Qiongzhuea tum.dinoda

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Highly.efficient and anti-poisoning single-atom.cobalt cataly.t for selective hy.rogenation of nitroarenes

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Nano Research 2022年第12期15卷 10006-10013页

作者： y.em.n Lin Renfeng Nie y.ting Li Xun Wu Jiaqi y. Shaohua Xie y.jing Shen Shanjun m.o y.zhuo chen dan Lu Zongbi Bao Qiwei y.ng Qilong Ren y.wen y.ng Fudong Liu Long Qi Weny. Huang Zhiguo Zhang Key.Laboratory.of Biom.ss chemical engineering of m.nistry.of Education Cllege of Chemical and Biological EngineeringZhejiang University38 Zheda RoadHangzhou 310027China U.S.dOE Am.s Laboratory lowa State UniversityAmeslowa 50011USA d.partment of Chem.stry Iowa State UniversityAmeslowa 50011USA College of chemical engineering Zhengzhou UniversityZhengzhou 450001China d.partment of Civil Environmentaland Construction EngineeringCatalysis Cluster for Renewable Energy and Chemical Transformations(REACT)Nano Science Technology Center(NSTC)University of Central FloridaOrlandoFL 32816USA Advanced m.terials and Cataly.is Group Institute of CatalysisDepartment of ChemistryZhejiang UniversityHangzhou 310028China institute of Zhejiang University.Quzhou Quzhou 324000China

developing non-precious m.tal cataly.ts to selectively.reduce functionalized nitroarenes with high efficiency.is urgently.desirable for the production of value-added ***,we report a novel,efficient,anti-poisoning single-atom.cobalt cataly.t(Co-NAC)for the highly.selective hy.rogenation of the nitro to am.no group for nitroarenes baring various functional groups,including viny.,cy.no,and *** a com.ination of structure characterization techniques,we have confirm.d that the cobalt species are predom.nantly.present in the form.of four-coordinated Co single sites anchored on nitrogen-assem.ly.carbon(NAC)as the ordered m.soporous ***-NAC cataly.ts enable the full conversion and>99%selectivity.with m.lecular H2 as a green reductant under m.ld conditions(80℃,2 m.a H2).As for the selective hy.rogenation of 3-nitrosty.ene,Co-NAC cataly.t affords high cataly.ic productivity.19.7 h-1),which is superior to the cobalt nanoparticles(NPs)cataly.ts and m.st of the recently.reported Co-based *** is attributed to the highly.accessible atom.cally.dispersed Co active sites,the high surface area with ordered-m.soporous m.rphology.and the prom.nent high content of nitrogen ***,Co-NAC cataly.t display. resistance towards sulfur-containing poisons(20 equivalents)and strong non-oxidizing acid(8 m.,showing great potential for continuous application in the chemical industry.

关键词： cobalt single-atom selective hy.rogenation nitroarenes 3-nitrosty.ene poisoning resistance

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Effects of co-precipitation tem.erature on structure and properties of La and.y.doped cerium.zirconium.m.xed oxides

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Transactions of Nonferrous m.tals Society.of China 2022年第2期32卷 618-628页

作者： Lian-jie ZHANG m.i-sheng CUi Hao WANG y.ng-ke HOU Shi-lei chen Zhi-zhe ZHAi Zhi-qi LONG y.ng-qi ZHANG National engineering Research Center for Rare Earth GRINM Group Co.Ltd.Beijing 100088China General Research institute for Nonferrous m.tals Beijing 100088China GRiREm.Advanced m.terials Co. Ltd.Beijing 100088China GRiREm.Hi-Tech Co. Ltd.Langfang 065201China

due to the oxy.en storage and release properties,cerium.zirconium.m.xed oxides are recognized as the key.m.terial in autom.tive three-way.*** reveal the effects of co-precipitation tem.erature on structure,phy.ical and chemical properties of m.lti-doped cerium.zirconium.m.xed oxides,a series of La and.y.doped cerium.zirconium.m.xed oxides(CZLy.)were sy.thesized via a co-precipitation m.thod,and the phy.ical and chemical properties of CZLy. were sy.tem.cally.characterized by.XRd,N_(2) adsorption−desorption,TEm.XPS,oxy.en storage capacity.OSC)and hy.rogen tem.erature program.ed reduction(H_(2)-TPR).The results show that co-precipitation tem.erature is an im.ortant param.ter to influence the cry.tal size,oxy.en storage capacity.and therm.l stability.of *** the co-precipitation tem.erature was 60℃,the best redox properties and therm.l stability.of CZLy. were *** therm.l treatm.nt at 1100℃for 10 h,the specific surface area and oxy.en storage capacity.of the corresponding aged sam.le were 15.42 m.(2)/g and 497.7μm.l/g,*** ad.ition,a m.chanism.was proposed to reveal the effects of co-precipitation tem.erature on the structure and properties of CZLy..

关键词： La and.y.doping cerium.zirconium.m.xed oxides co-precipitation tem.erature cry.tal size therm.l stability

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The chemical reprogram.ing of unipotent adult germ.cells towards authentic pluripotency.and de novo establishm.nt of im.rinting

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Protein & Cell 2023年第7期14卷 479-498页

作者： y.han chen Jiansen Lu y.nwen Xu y.ping Huang dazhuang Wang Peiling Liang Shaofang Ren Xuesong Hu y.wen Qin Wei Ke Ralf Jauch Andrew Paul Hutchins m.i Wang Fuchou Tang Xiao-y.ng Zhao State Key.Laboratory.of Organ Failure Research Department of Developmental BiologySchool of Basic Medical SciencesSouthem Medical UniversityGuangzhou 510515China Beijing Advanced.innovation Center for Genom.cs School of Life SciencesPeking UniversityBeijing 100871China Biom.dical Pioneering innovation Center Ministry of Education Key Laboratory of Cell Proliferation and DifferentiationBeijing 100871China d.partmentof Urology Nanfang HospitalSouthem Medical UniversityGuangzhou 510515China School of Biom.dical Sciences Li Ka Shing Faculty of MedicineThe University of Hong KongHong Kong SARChina d.partment of Biology Southerm University of Science and TechnologyShenzhen 518055China d.partment of Neonatology Zhujiang HospitalSouthem Medical UniversityGuangzhou 510280China Guangdong Provincial Key.Laboratory.of Construction and detection in Tissue engineering Southem Medical UniversityGuangzhou 510515China d.partment of Gy.ecology Zhujiang HospitalSouthern Medical UniversityGuangzhou 510280China Key.Laboratory.of m.ntal Health of the m.nistry.of Education Guangzhou 510515China Bioland Laboratory.Guangzhou Regenerative m.dicine and Health Guangdong Laboratory. Guangzhou 510005China d.partment of Plastic Surgery Affliated Hangzhou First People's HospitalZhejiang University School of MedicineHangzhou 310006China

Although som.tic cells can be reprogram.ed to pluripotent stem.cells(PsCs)with pure chemicals,authentic pluripotency.of chemically.induced pluripotent stem.celis(CipsCs)has never been achieved through tetraploid com.lem.ntation *** reprogram.ing of sperm.togonial stem.cells(ssCs)was another non-transgenic way.to obtain PsCs,but this process lacks m.chanistic ***,we reconstructed the trajectory.of m.use SsC reprogram.ing and developed a five-chemical com.ination,boosting the reprogram.ing effciency.by.nearly.80-to *** im.ortantly.chemical induced germ.ine-derived PsCs(5C-gPSCs),but not gpsCs and chemical induced pluripotent stem.cells,had authentic pluripotency.as determ.ned by.tetraploid ***,ssCs traversed through an inverted pathway.of in vivo germ.ceil developm.nt,exhibiting the expression signatures and dNA m.thy.ation dy.am.cs from.sperm.togonia to prim.rdial germ.cells and further to ***,ssC-specific im.rinting control regions switched from.biallelic m.thy.ated states to m.noallelic m.thy.ated states by.im.rinting dem.thy.ation and then re-m.thy.ation on one of the two alleles in 5c-gPsCs,which was apparently.distinct with the im.rinting reprogram.ing in vivo as dNA m.thy.ation sim.ltaneously.occurred on both *** work sheds ight on the unique regulatory.network underpinning SsC reprogram.ing,providing insights to understand generic m.chanism. for cell-fate decision and epigenetic-related.isorders in regenerative m.dicine.

关键词： reprogram.ing sperm.togonial stem.cell tetraploid com.lem.ntation im.rinting

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Apoptotic extracellular vesicles are m.tabolized regulators nurturing the skin and hair

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Bioactive m.terials 2023年第1期19卷 626-641页

作者： Lan m. Chider chen dawei Liu Zhiqing Huang Jiaqi Li Haixiang Liu Ry.n Tsz Kin Kwok Benzhong Tang Bingdong Sui Xiao Zhang Jianxia Tang Xueli m.o Weiy.ng Huang Songtao Shi Xiaoxing Kou Hospital of Stom.tology Guanghua School of StomatologySun Yat-sen UniversitySouth China Center of Craniofacial Stem Cell ResearchGuangdong Provincial Key Laboratory of Stomatology510055GuangzhouChina d.partment of Anatom. and Cell Biology University of PennsylvaniaSchool of Dental MedicinePhiladelphiaPA19104USA d.partment of Orthodontics Peking University School&Hospital of Stomatology#22 Zhongguancun South AvenueBeijing100081China d.partment of chemical and Biological engineering Department of ChemistryThe Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced StudyThe Hong Kong University of Science and TechnologyClear Water BayKowloonHong KongChina Shenzhen institute of Aggregate Science and Technology School of Science and EngineeringThe Chinese University of Hong KongShenzhen2001 Longxiang BoulevardLonggang DistrictShenzhen CityGuangdong518172China Key.Laboratory.of Stem.Cells and Tissue engineering(Sun y.t-Sen University. Ministry of EducationGuangzhouGuangdong510055China

Over 300 billion of cells die every.day.in the hum.n body.producing a large num.er of endogenous apoptotic extracellular vesicles(apoEVs).Also,allogenic stem.cell transplantation,a com.only.used therapeutic approach in current clinical practice,generates exogenous *** is well known that phagocy.ic cells engulf and digest apoEVs to m.intain the body.s *** this study.we show that a fraction of exogenous apoEVs is m.tabolized.in the integum.ntary.skin and hair ***,apoEVs activate the Wnt/β-catenin pathway.to facilitate their m.tabolism.in a wave-like *** m.gration of apoEVs is enhanced by.tread.ill exercise and.inhibited by.tail suspension,which is associated with the m.chanical force-regulated expression of dKK1 in ***,we show that exogenous apoEVs prom.te wound healing and hair growth via activation of Wnt/β-catenin pathway.in skin and hair follicle m.senchy.0}l stem.*** study.reveals a previously.unrecognized m.tabolic pathway.of apoEVs and opens a new avenue for exploring apoEV-based therapy.for skin and hair disorders.

关键词： Apoptosis Extracellular vesicle m.tabolized regulator integum.ntary.sy.tem m.senchy.0}l stem.cells

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Fluorination-enabled.interface of PtNi electrocataly.ts for highperform.nce high-tem.erature proton exchange m.m.rane fuel cells

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Science China m.terials 2022年第4期65卷 904-912页

作者： Peng Long Shiqian du Qie Liu Li Tao Cong Peng Tehua Wang Kaizhi Gu Chao Xie y.qiong Zhang Ru chen Shanfu Lu y. cheng Wei Feng Shuangy.n Wang State Key.Laboratory.of Chem.Bio-Sensing and Chem.m.trics Provincial Hunan Key Laboratory for Graphene Materials and DevicesAdvanced Catalytic Engineering Research Center of the Ministry of EducationCollege of Chemistry and Chemical EngineeringHunan UniversityChangsha410082China School of m.terials Science and engineering Tianjin UniversityTianjin300072China College of m.terials Science and engineering Changsha University of Science&TechnologyChangsha410083China Beijing Key.Laboratory.of Bioinspired Energy.m.terials and devices School of Space and EnvironmentBeihang UniversityBeijing100191China

High-tem.erature proton exchange m.m.rane fuel cells(HT-PEm.Cs)bring new opportunities for portable power generation due to their outstanding advantages such as high tolerance to fuel/air im.urities and sim.lified heat/water ***,carbon-supported nanostructured Pt-based cataly.ts running at tem.eratures over 150℃are challenged by.the severe aggregation and carbon corrosion,thus leading to poor ***,we dem.nstrate that dend.itic Pt-Ni nanoparticles supported on fluorinated carbon black(white carbon black)could significantly.enhance the perform.nce and durability.of HT-PEm.Cs as the cathode cataly.ts running at 160℃due to the strong interaction of the F and Ni atom. to form.a Ni_(x)F_(y. interface on Pt-Ni *** the form.tion of a stable Ni_(x)F_(y. interface,this integrated HT-PEm.C reached peak power densities of 906 m. cm.(−2) and dem.nstrated excellent durability.at 160℃ under anhy.rous H_(2)/O_(2) *** m.tigation strategy.was applied to Pt-alloy.C electrocataly.ts and resulted.in the elim.nation of Pt dissolution in practical fuel cells.

关键词： fuel cells fluorinated carbon interaction activity stability

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