检索结果-南通市图书馆

Nano Research 2023年第1期16卷 1642-1650页

作者： Yong Cheng Bingbing Chen limin Chang Dongyu {1. Chunli wang Shaohua wang Ping Nie limin wang key {1. of Preparation and Applications of Environmental Friendly materials(Jilin Normal university) Ministry of EducationChangchun 130103China State key {1. of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryCASChangchun 130022China Department of Energy science and {1. Nanjing Tech UniversityNanjing 210000China State key {1. of metastable materials science and technology Yanshan UniversityQinhuangdao 066004China

SnO2-based anode materials have attracted much attention due to high capacity and relatively mild voltage ***,limited by low initial Coulombic efficiency(ICE)and poor stability,its practical application is still ***,it has been found that compositing carbon or metal particles with SnO2 is an effective strategy to achieve high alkaline-ion *** this strategy may improve the kinetics and ICE of the electrochemical reaction,the specific mechanism has not been clearly *** this work,we found that the invalidation SnO2 may go through two steps:1.the conversion process from SnO2 to Sn and Li2O;2)the collapse of the electrode material resulted from huge volume changes during the alloyed Sn with alkaline *** address these issues,a unique robust Co-NC shell derived from ZIF-67 is introduced,in which the transited metallic Co nanoparticles could accelerate the decomposition of Sn-O and Li-O bonds,thus expedite the kinetics of conversion *** a result,the SnO2@Co-NC electrode achieves a more complete and efficient transfer between SnO2 and Sn phases,possessing a potential to achieve high alkaline-ion(Li+/Na+/K+)storages.

关键词： alkaline-ion storage SnO2 anode conversion reaction electron transfer

低温轧制对高强高导Cu-1.r-0.2Zr-0.25Nb合金性能及析出行为的影响

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

金属学报 2024年第3期60卷 405-416页

作者：李龙健李仁庚张家郡曹兴豪康慧君王同敏大连理工大学材料科学与工程学院辽宁省凝固控制与数字化制备技术重点实验室大连116024 南京工业大学先进轻质高性能材料研究中心南京210009

随着现代工业中交通、电气、航空航天、电子等领域的快速发展,对铜合金的性能要求越来越高。强度和导电率是相互矛盾的性质,实现铜合金兼具高强度和高导电率是现代铜工业发展的重要课题。采用真空熔炼、低温轧制、时效处理等工艺制备了C... 详细信息

随着现代工业中交通、电气、航空航天、电子等领域的快速发展,对铜合金的性能要求越来越高。强度和导电率是相互矛盾的性质,实现铜合金兼具高强度和高导电率是现代铜工业发展的重要课题。采用真空熔炼、低温轧制、时效处理等工艺制备了Cu-1.r-0.2Zr-0.25Nb(质量分数,%)合金,研究了低温轧制对Cu-1.r-0.2Zr-0.25Nb合金显微组织、力学性能和导电性能的影响,分析了时效工艺对析出相种类、形貌和分布的影响。结果表明,Cu-1.r-0.2Zr-0.25Nb合金主要由Cr相、富Zr相、Cr2Nb相及Cu基体相组成。450℃短时(30 min)时效后Cu-1.r-0.2Zr-0.25Nb合金即可析出纳米级fcc结构的Cr析出相,在长时间(300 min)时效后,会形成bcc结构的Cr析出相。Cu-1.r-0.2Zr-0.25Nb合金经过低温轧制和时效处理后,在Cu基体中形成了纳米析出相、纳米变形孪晶和位错等混合组织并获得了优异的综合性能。低温轧制Cu-1.r-0.2Zr-0.25Nb合金450℃时效30 min后,抗拉强度为700 MPa,导电率为73.29%IACS;450℃时效300 min后,导电率可达79.81.IACS,此时,抗拉强度、屈服强度和硬度分别为646 MPa、606 MPa和21. HV。结合实验结果和对强度贡献计算表明,位错强化和析出强化是Cu-1.r-0.2Zr-0.25Nb合金的主要强化机制。

关键词： Cu-1.r-0.2Zr-0.25Nb合金低温轧制析出相强度导电率

Stabilizing effects of atomic Ti doping on high-voltage high-nickel layered oxide cathode for lithium-ion rechargeable batteries

在线全文

学校读者我要写书评

暂无评论

Nano Research 2022年第5期15卷 4091-4099页

作者： Yong Cheng Yan Sun Changting Chu limin Chang Zhaomin {1. Dongyu zhang Wanqiang Liu zechao Zhuang limin {1. key {1. of Preparation and Applications of Environmental Friendly materials(Ministry of Education) Jilin Normal UniversityChangchun 130103China State key {1. of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China School of materials {1. and engineering Changchun University of Science and TechnologyChangchun 130022China Department of Chemistry Tsinghua UniversityBeijing 100084China

High-voltage high-nickel lithium layered oxide cathodes show great application prospects to meet the ever-increasing demand for further improvement of the energy density of rechargeable lithium-ion batteries(LIBs)mainly due to their high output ***,severe bulk structural degradation and undesired electrode-electrolyte interface reactions seriously endanger the cycle life and safety of the ***,2 mol%Ti atom is used as modified material doping into LiNi_(0.8)Co_(0.2)Mn_(0.2O2)(NCM)to reform LiNi_(0.6)Co_(0.2)Mn_(0.1.)Ti_(0.02)O_(2)(NCM-Ti)and address the long-standing inherent *** a high cut-off voltage of 4.5 V,NCM-Ti delivers a higher capacity retention ratio(91.8%vs.82.9%)after 1.0 cycles and a superior rate capacity(1.8 vs.1.5 mAh·g^(-1.)at the high current density of 1. C than the pristine *** designed high-voltage full battery with graphite as anode and NCM-Ti as cathode also exhibits high energy density(240 Wh·kg^(-1.)and excellent electrochemical *** superior electrochemical behavior can be attributed to the improved stability of the bulk structure and the electrode-electrolyte interface owing to the strong Ti-O bond and no unpaired *** in-situ X-ray diffraction analysis demonstrates that Ti-doping inhibits the undesired H2-H3 phase transition,minimizing the mechanical *** ex-situ TEM and X-ray photoelectron spectroscopy reveal that Ti-doping suppresses the release of interfacial oxygen,reducing undesired interfacial *** work provides a valuable strategic guideline for the application of high-voltage high-nickel cathodes in LIBs.

关键词： lithium-ion battery high-voltage high-nickel cathode Ti-doping structural stability interface stability

二维六方Mo_(2)B_(2)作为金属离子电池负极材料的第一性原理研究

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

硅酸盐学报 2024年第7期52卷 2232-2242页

作者：曹宇张国辉王长刚周静蔡永茂赵耀东北电力大学现代电力系统仿真控制与绿色电能新技术教育部重点实验室吉林132012 东北电力大学电气工程学院吉林132012 东北电力大学化学工程学院吉林132012 东北电力大学理学院吉林132012 中国铁路设计集团有限公司天津300308

可充电金属离子电池(RMBs)迫切需要开发新型高比容量的负极材料。采用第一性原理计算方法研究了六方h-Mo_(2)B_(2)MBene作为RMBs(Li、Na、Mg和K离子)负极材料的潜力。计算结果表明,h-Mo_(2)B_(2)MBene结构稳定且具有良好的导电性。作为R... 详细信息

可充电金属离子电池(RMBs)迫切需要开发新型高比容量的负极材料。采用第一性原理计算方法研究了六方h-Mo_(2)B_(2)MBene作为RMBs(Li、Na、Mg和K离子)负极材料的潜力。计算结果表明,h-Mo_(2)B_(2)MBene结构稳定且具有良好的导电性。作为RMBs负极材料组装成Li离子电池、Na离子电池、K离子电池和Mg离子电池时,其理论比容量分别为:753、31.、1.5 mA·h·g^(–1.和1.06 mA·h·g^(–1.。与传统石墨负极相比,h-Mo_(2)B_(2)在锂离子电池中具有更高的比容量,而Mg离子在h-Mo_(2)B_(2)上的超大理论容量得益于Mg离子可以携带更多的电荷。Li、Na、Mg和K离子在h-Mo_(2)B_(2)上具有较低的扩散势垒,分别为39、1.、37 meV和7 meV。Li、Na、Mg和K离子在h-Mo_(2)B_(2)中的平均开路电压分别为:0.36、0.47、0.63 V和0.63 V。这些优异的性能表明,h-Mo_(2)B_(2)MBene可以作为锂离子、钠离子以及镁离子电池等领域中一种非常有前景的负极材料。

关键词：第一性原理计算金属离子电池负极材料二维过渡金属硼化物

δ-MnO_(2)原位负载纳米木质素基分级多孔炭的制备及其电化学性能

在线全文

学校读者我要写书评

暂无评论

化工进展 2024年第2期43卷 1013-1021页

作者：娄瑞牛涛嫄曹启航张依依雷雯祺卢聪敏王志伟陕西科技大学机电工程学院陕西西安710021 广西大学轻工与食品工程学院广西清洁化制浆造纸与污染控制重点实验室广西南宁530004

由于生物质具有来源广泛、成本低廉、可再生等优点,近年来生物质基多孔炭作为电极材料在超级电容器方面的应用被广泛研究。本文以麦草生物质分离得到的纳米木质素(lignin nanoparticles,LNP)为炭前体,经碳酸锌活化预处理后在不同热解温... 详细信息

由于生物质具有来源广泛、成本低廉、可再生等优点,近年来生物质基多孔炭作为电极材料在超级电容器方面的应用被广泛研究。本文以麦草生物质分离得到的纳米木质素(lignin nanoparticles,LNP)为炭前体,经碳酸锌活化预处理后在不同热解温度(600~800℃)下制备LNP基分级多孔炭(LPC)。并通过溶液反应法将δ-MnO_(2)纳米晶原位负载于LPC上,成功合成具有三维(3D)纳米片状结构的炭基复合材料(MnO_(2)/LPC)。借助扫描电子显微镜、X射线衍射仪和傅里叶变换红外光谱仪等手段耦合电化学性能测试技术,对MnO_(2)/LPC的微观形貌、结构组成及电化学性能等进行表征。研究结果显示,LNP衍生LPC的热解温度对δ-MnO_(2)原位生长行为有着重要影响。当LPC的热解温度从600℃升高到800℃时,原位生长的MnO_(2)从纳米簇状颗粒逐渐演变成3D交联的多孔纳米片层结构。此外,以MnO_(2)/LPC制备的工作电极表现出优异的电化学性能。当电流密度为1./g时,在800℃下的MnO_(2)/LPC具有最高的质量比电容(1.5F/g);当电流密度增大至5A/g时,其比电容量仍保持为1.0F/g,并具有良好的倍率性能(75.9%);同时,该复合材料组装成的对称超级电容器在二电极体系下具有较高的比电容(87F/g)和能量密度(3.03W·h/kg)。

关键词：纳米木质素多孔炭二氧化锰电化学

维普期刊数据库博看期刊

Preliminary analysis of two NAC transcription factor expression patterns in Larix olgensis

在线全文

学校读者我要写书评

暂无评论

Journal of Forestry Research 2022年第2期33卷 601-609页

作者： Qing cao Peiqi An Sufang {1. Junhui wang Hanguo {1. Lei {1. State key {1. of Tree Genetics and Breeding Northeast Forestry UniversityHarbin 150040People’s Republic of China Chinese Academy of Forestry Beijing 100000People’s Republic of China

The NAC transcription factor family is plant-specific with various biological ***,there are few studies on the NAC gene involving coniferous *** research and expression analysis of NAC genes in Larix olgensis can be used to analyse the function of the NAC gene in the *** of excellent genetic materials and molecular breeding have been utili{1.d to cultivate high-quality,stress-resistant *** to the transcriptome data for ***,the genes Uni-gene81.90 and Unigene70699 with complete ORFs(open reading frames)were obtained by conserved domain analy-sis and named LoNAC1.and LoNAC2,*** cDNAs of LoNAC1.and LoNAC2 were 1.71.bp and 1.95 bp in length,encoding 656 and 364 amino acids,*** molecular weights of the proteins encoded by the two genes were predicted to be 72.61.kDa and 41.1. kDa,and subcellular localization analysis indicated that the proteins were concentrated in the *** results of real-time quantitative PCR analysis showed that at different growth stages and in different tissues of ***,the relative expression levels of the two NAC genes were highest in the stem,and the expression differences were more obvious in non-lignified *** drought,salt and alkali stress and hormone treatment,expression was induced to different *** expression levels of LoNAC1.and LoNAC2 in semi-lignified *** were higher than in the other two periods(non-lignified and lignified),and expression levels significantly increased under drought and salt *** expression levels changed under hormone *** is speculated that these two genes may not only be related to drought and salt stress and secondary growth but may also be induced by hormones such as abscisic ***,LoNAC1.and LoNAC2 are genetic materials that can be used for molecular breeding of larch.

关键词： Larix olgensis NAC transcription factor Bioinformatics analysis Expression patterns

Emerging contaminants:A One Health perspective

在线全文

学校读者我要写书评

暂无评论

The Innovation 2024年第4期5卷 140-170,139页

作者： Fang wang Leilei Xiang Kelvin Sze-Yin Leung Martin Elsner Ying zhang Yuming Guo Bo Pan Hongwen Sun Taicheng An Guangguo Ying Bryan WBrooks Deyi Hou Damian EHelbling Jianqiang Sun Hao Qiu Timothy MVogel Wei zhang Yanzheng Gao Myrna JSimpson Yi Luo Scott XChang Guanyong Su Bryan MWong Tzung-May Fu Dong Zhu Karl JJobst Chengjun Ge Frederic Coulon Jean Damascene Harindintwali Xiankui zeng Haijun wang Yuhao Fu Zhong Wei Rainer Lohmann Changer Chen Yang Song Concepcion Sanchez-Cid Yu wang Ali El-Naggar Yiming Yao Yanran Huang Japhet Cheuk-Fung Law Chenggang Gu Huizhong Shen Yanpeng Gao Chao Qin Hao Li Tong zhang Natàlia Corcoll Min Liu Daniel SAlessi Hui Li Kristian KBrandt Yolanda Pico Cheng Gu Jianhua Guo Jianqiang Su Philippe Corvini Mao Ye Teresa Rocha-Santos Huan He Yi Yang Meiping Tong Weina zhang Fidèle Suanon Ferdi Brahushi Zhenyu wang Syed AHashsham Marko Virta Qingbin Yuan Gaofei Jiang Louis A.Tremblay Qingwei Bu Jichun Wu Willie Peijnenburg Edward Topp Xinde cao Xin Jiang Minghui Zheng Taolin zhang Yongming Luo Lizhong Zhu Xiangdong Li DamiàBarceló Jianmin Chen Baoshan Xing Wulf Amelung Zongwei Cai Ravi Naidu Qirong Shen Janusz Pawliszyn Yong-guan Zhu Andreas Schaeffer Matthias C.Rillig Fengchang Wu Gang Yu James M.Tiedje State key {1. of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China university of Chinese Academy of {1.s Beijing 100049China Department of Chemistry Hong Kong Baptist UniversityHong KongChina HKBU Institute of Research and Continuing Education Shenzhen Virtual University ParkShenzhenChina Technical university of Munich TUM School of Natural SciencesInstitute of Hydrochemistry85748 GarchingGermany School of Resources&Environment Northeast Agricultural UniversityHarbin 150030China Climate Air Quality Research UnitSchool of Public Health and Preventive MedicineMonash UniversityMelbourneVICAustralia Faculty of Environmental science&{1. Kunming University of Science&TechnologyKunming 650500China Ministry of Education key {1. of Pollution Processes and Environmental Criteria College of Environmental Science and EngineeringNankai UniversityTianjin 300350China Guangdong key {1. of Environmental Catalysis and Health Risk Control School of Environmental Science and EngineeringInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China Ministry of Education key {1. of Environmental Theoretical Chemistry South China Normal UniversityGuangzhouGuangdong 510006China Department of Environmental science Baylor UniversityWacoTXUSA Center for Reservoir and Aquatic Systems Research(CRASR) Baylor UniversityWacoTXUSA School of Environment Tsinghua UniversityBeijing 100084China School of Civil and Environmental engineering Cornell UniversityIthacaNY 14853USA key {1. of Microbial technology for Industrial Pollution Control of Zhejiang Province Zhejiang University of TechnologyHangzhou 310014China School of Environmental science and {1. Shanghai Jiao Tong UniversityShanghai 200240China Laboratoire d’Ecologie Microbienne Universite Claude Bernard Lyon 1UMR CNRS 5557UMR INRAE 1418VetAgro Sup69622 VilleurbanneFrance Department of Pla

Environmental pollution is escalating due to rapid global development that often prioritizes human needs over planetary *** global efforts to mitigate legacy pollutants,the continuous introduction of new substances remains a major threat to both people and the *** response,global initiatives are focusing on risk assessment and regulation of emerging contaminants,as demonstrated by the ongoing efforts to establish the UN’s Intergovernmental {1.-Policy Panel on Chemicals,Waste,and Pollution *** review identifies the sources and impacts of emerging contaminants on planetary health,emphasizing the importance of adopting a One Health *** for monitoring and addressing these pollutants are discussed,underscoring the need for robust and socially equitable environmental policies at both regional and international *** actions are needed to transition toward sustainable pollution management practices to safeguard our planet for future generations.

关键词： pollution planet contaminants

Crystallization and Corrosion Resistance of (Fe_(0.78)Si_(0.09)B_(0.1.))1.0_(-x)Ni_x (x=0,2 and 5) Glassy Alloys

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of materials {1. & technology 2011年第12期27卷 1169-1177页

作者： Haitian Ma Weimin wang die {1. Guihua Li Chongde cao Hongdi {1. key {1. for Liquid-Solid Structural Evolution and Processing of materials （Ministry of Education） Shandong University Jinan 250061 China School of Mechannical and Eiectrical engineering Weifang University Weifang 261061 China Shandong Institute of Metrology Jinan 250014 China Department of Applied Physics Northwestern Polytechnical University Xitan 710072 China

The crystallization of the （Fe0.78Si0.09B0.1.）1.0-xNix glassy alloys （x=O, 2 and 5） has been investigated by X-ray diffraction （XRD） and differential scanning calorimeter （DSC）. Corrosion resistance analyses have been carried out using electrochemical measurements and corrosion products have been analyzed by scanning electron microscopy （SEM）. The experimental results show that the addition of Ni can promote the nucleation of c^-Fe, retard the decomposition of the {1. borides, and alter the crystallization mode of the present Fe-based glassy alloys. The lattice constant （ao^e） of c^-Fe in the annealed samples shows a decreasing trend with increasing annealing time. The Ni addition can improve the corrosion resistance of the as-quenched Fe-based glassy alloys in H2S04, NaCI and NaOH solutions. The results indicate that Ni can promote the diffusion of Si atoms during quenching and annealing processes.

关键词： Crystallization Corrosion resistance Fe-based glassy alloys

Effect of Al2O3 on the viscosity of cao-SiO2-Al2O3-MgO-Cr2O3 slags

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and materials 2021年第5期28卷 797-803页

作者： Chen-yang Xu Cui wang Ren-{1. Xu Jian-liang zhang Ke-xin Jiao School of Metallurgical and Ecological engineering University of Science and Technology BeijingBeijing 100083China State key {1. of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

We investigated the effect of Al2O3 content on the viscosity of cao-SiO2-Al2O3-8wt%MgO-1.t%Cr2O3(mass ratio of cao/SiO2 is 1.0,and Al2O3 content is 1.wt%-29wt%)*** results show that the viscosity of the slag increases gradually with increases in the Al2O3 content in the range of 1.wt%to 29wt%due to the role of Al2O3 as a network former in the polymerization of the aluminosilicate structure of the *** increases in the Al2O3 content from 1.wt%to 29wt%,the apparent activation energy of the slags also increases from 1.0.85 to 21..23 kJ/mol,which is consistent with the variation in the critical *** Fourier-transform infrared spectra indicate that the degree of polymerization of this slag is increased by the addition of *** application of Iida’s model for predicting the slag viscosity in the presence of Cr2O3 indicates that the calculated viscosity values fit well with the measured values when both the temperature and Al2O3 content are at relatively low levels,i.e.,the temperature range of 1.73 to 1.03 K and the Al2O3 content range of 1.wt%-29wt%in cao-SiO2-Al2O3-8wt%MgO-1.t%Cr2O3 slag.

关键词： slag viscosity high aluminium oxide apparent activation energy structure viscosity prediction

Core-branch Co Ni hydroxysulfides with versatilely regulated electronic and surface structures for superior oxygen evolution electrocatalysis

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2019年第11期28卷 8-14页

作者： Bin wang Cheng Tang Hao-Fan wang Xiao Chen Rui cao Qiang zhang Beijing key {1. of Green Chemical Reaction engineering and technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China School of Chemistry and Chemical engineering Shaanxi Normal UniversityXi’an 710119ShaanxiChina School of Chemical engineering The University of AdelaideAdelaideAustralia AIST-Kyoto university Chemical Energy {1. Open Innovation laboratory(ChEM-OIL) National Institute of Advanced Industrial Science and Technology(AIST)YoshidaSakyo-kuKyoto 606-8501Japan

To satisfy the rapid development of gas-involving electrocatalysis(O2, CO2, N2, etc.), nanostructured electrocatalysts with favorably regulated electronic structure and surface nanostructures are urgently required. Herein, we highlighted a core-branch hydroxysulfide as a significantly enhanced oxygen evolution reaction electrocatalyst. This hydroxysulfide was facilely fabricated via a versatile interfacial reaction in S2- inorganic solution at room temperature for a designed period. The moderative growth kinetics contributed to the growth of interconnected hydroxysulfide nanosheets with high-sulfur contents on the hydroxide precursor substrates, resulting in a hierarchical nanostructure with multifunctional modifications, including regulated electronic structure, rapid electron highway, excellent accessibility, and facilitated mass transfer. Such synthetic methodology can be generalized and facilely governed by regulating the temperature, concentration, duration, and solvent for targeted nanostructures. Contributed to the favorably regulated electronic structure and surface nanostructure, the as-obtained core-branch Co2NiS2.4(OH)1.2 sample exhibits superior OER performance, with a remarkably low overpotential(279 m V required for 1..0 m A c^m-2), a low Tafel slope(52 m V dec^-1., and a favorable long-term stability. This work not only presents a promising nanostructured hydroxysulfide for excellent OER electrocatalysis, but also shed fresh lights on the further rational development of efficient electrocatalysts.

关键词： Oxygen evolution reaction Hydroxysulfides Anion regulation Interfacial reaction Hierarchical structure