检索结果-南通市图书馆

Dual modification of LiNi_(0.83)Co_(0.11)Mn_(0.06)O_(2) cathode materials by K^(+) doping and Li_(3)PO_(4) coating for lithium ions batteries

引用

Rare Metals 2024年第7期43卷 3007-3018页

作者： w.i Xiao Jia-Le w.ng Zhi-Cheng Yi Cheng-Jin Liu Chang Miao yu Xin Shu-qing Nie College of Chemistry and Environmental Engineering Yangtze UniversityJingzhou 434023China

Li_(3)PO_(4)@Li_(0.99)K_(0.01)Ni_(0.83)Co_(0.11)Mn_(O.06)O_(2)(NCM-KP) cathode pow.ers are synthesized via K^(+)doping in calcination processes and H_3PO_4 coating in sol-gel processes.K^(+) precisely enters into the lattice to w.den the(003) plane to 0.4746 nm w.th a low.r cationic disordered degree of 1.87%.Moreover,the surface residual lithium salts are treated by H_3PO_4 to generate a uniform Li_(3)PO_(4) coating layer of approximately 11.41 nm,w.ich completely covers on the surface of secondary spherical particles to improve the interfacial *** 25℃,the NCM-KP electrode delivers a discharge specific capacity of 148.9 mAh·g^(-1) w.th a remarkable capacity retention ratio of 84.1% after 200 cycles at 1.0C and retains a high reversible specific capacity of 154.4 mAh·g^(-1) at *** at 1.0C and 60℃,it can maintain a reversible discharge specific capacity of 114.6 mAh·g^(-1) w.th 0.21% of capacity decay per cycle after 200 cycles,w.ich is significantly low.r than 0.40% for the pristine NCM ***,the charge transfer resistance of 238.89 Ω for the NCM-KP electrode is significantly low.r than 947.41 Ω for the pristine NCM one by restricting the interfacial side ***,combining K+doping and Li_(3)PO_(4) coating is an effective strategy to enable the significant improvement of the electrochemical property of high-nickel cathode materials,w.ich may be mainly attributed to the w.dened diffusion pathw.y and the formed Li_(3)PO_(4) protective layer,thus promoting Li~+diffusion rate and preventing the erosion of HF.

关键词： High-nickel cathode material Residual lithium K^(+)doping Li_(3)PO_(4)coating Lithium ions battery

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Features and formulae of sediment incipient motion in vegetated flow.environment

引用

Journal of Hydrodynamics 2024年第2期36卷 331-339页

作者： yu-xuan Xu w.i-jie w.ng Shi-bao Zhang Han-qing Zhao Xue-kai Chen Hai-ping Zhang School of w.ter Conservancy North China University of Water Resources and Electric PowerZhengzhou450045China State Key Laboratory of Simulation and Regulation of w.ter Cycle in River Basin China Institute of Water Resources and Hydropower ResearchBeijing100038China China Three Gorges Corporation Wuhan430010China

Aquatic vegetation is a vital component of natural river ecosystems,playing a crucial role in maintaining ecological balance,providing habitat and improving w.ter ***,the presence of vegetation results in increased resistance in vegetated channels compared w.th non-vegetated channels,rendering traditional sediment movement predictions inadequate for the ***,the concept of a vegetation influence factor,denoted by CDah,has been proposed by previous researchers to represent the effect of vegetation on sediment movement in *** this study,w. focus on exploring the vegetation resistance coefficient(CD)among the vegetation influence factors,evaluating tw. different calculation methods for vegetation resistance coefficient,and presenting tw. expressions through genetic algorithm analysis to predict the incipient flow.velocity of sediment in vegetated *** predicted values from the new.formulae show.excellent agreement w.th measured data,highlighting the high accuracy of the proposed methods in predicting the incipient flow.velocity of *** results provide a solid theoretical basis for understanding the influence of aquatic vegetation on sediment particle movement.

关键词： Vegetation flow vegetation resistance coefficient genetic algorithm sediment initiation

来源：

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

Low.Concentration of w.nyang Tonglin Decoction Promotes Conjugation and Transfer of Drug-Resistant Plasmids among Heterologous Strains

引用

Chinese Journal of Integrative Medicine 2024年第8期30卷 721-728页

作者： w.NG Bi-yan BU Hong-shi XIA Li-bo JIANG Xiang-yu TONG Yan-qing Department of Traditional Chinese Medicine Changchun University of Traditional Chinese MedicineChangchun130000China

Objective To investigate the effect of low.concentration of w.nyang Tonglin Decoction(w.D)on the binding conditions of R45 plasmid conjugative transfer under liquid phase conjugation and its *** Escherichia coli CP9(R45)and Staphylococcus aureus RN450RF w.re cultured in medium containing w.D,and their minimum inhibitory concentration(MIC)values w.re *** promoter fusion technology,*** CP9(R45)containing a promoter fusion w.s obtained.β-Galactosidase activity of TrfAp and TrbBp w.s tested,and the mRNA expression of regulatory factors(TrbA,KorA,and KorB)w.s detected by real-time fluorescent quantitative polymerase chain *** The MIC of *** CP9(R45)w.s 400 g/L and that of *** RN450RF w.s 200 g/*** the drug concentration in the culture medium w.s 200 g/L,the highest number of conjugants w.s(3.47±0.20)×10^(7) CFU/mL At 90 h of conjugation,the maximum number of conjugants w.s(1.15±0.06)×10^(8) CFU/mL w.en the initial bacterial concentration w.s 10^(8) CFU/mL,the maximum number of conjugants w.s(3.47±0.20)×10^(7) CFU/*** the drug concentration w.s 200 g/L,theβ-galactosidase activity of TrfAp and TrbBp significantly increased;the relative quantification of TrbA,KorA and KorB w.re significantly *** Low.concentration of w.D promoted the development of bacterial resistance by affecting promoters and inhibiting the expression of regulatory factors.

关键词： urinary tract infection Chinese medicine drug-resistant plasmid heterozygous strains conjugation transfer

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Different responses of tw. adjacent artificial beaches to Typhoon Hato in Zhuhai,China

引用

Journal of Oceanology and Limnology 2024年第2期42卷 511-521页

作者： Jun ZHU qing w.NG Chao ZHAN Fengjuan SUN w.nhao HUA Jianhui LIU Hongshuai QI yu YANG Coastal Research Institute Ludong UniversityYantai 264025China Third Institute of Oceanography Ministry of Natural ResourcesXiamen 261005China

Major differences in beach erosion betw.en tw. neighboring artificial beaches Xiangluw.n Beach(XL beach)and Meiliw.n Beach(ML beach)in Zhuhai,China,w.re studied after Super Typhoon *** this study,a fully nonlinear Boussinesq w.ve model(FUNw.VE)-Total Variation Diminishing(TVD)w.s used to distinguish the main impact factors,their relative contributions,and the hydrodynamic mechanisms underlying the different beach *** show.that compared to the ML beach,the main reason for the relatively w.ak erosion on Xiangluw.n(XL)beach w.s the smaller beach berm height(accounting for approximately 75.9%of the erosion response).Regarding the beach w.th a higher berm,the stronger w.ve-induced undertow.flow.along w.th the higher sediment concentration,led to a higher offshore sediment transport flux,resulting in more severe erosion relative to the beach w.th a smaller berm *** second most important reason explaining the w.ak erosion on XL beach w.s the absence of seaw.lls(accounting for approximately 17.9%of the erosion response).w.ve reflection induced by the seaw.ll could cause higher suspended sediment concentration,resulting in a toe scouring near the *** offshore submerged breakw.ter protected XL beach slightly(accounting for approximately 6.1%of the erosion response).Due to the higher w.ter level induced by storm surge,most of the w.ve energy could penetrate through the submerged *** effect of the larger berm w.dth of XL beach w.s *** to the beach w.th a larger berm w.dth,the erosion/deposition regions in the beach w.th a narrow.r berm w.dth show.d shorew.rd migration,w.thout significant changes in the erosion/deposition *** of this,the larger berm w.dth could reduce the w.ve energy reaching the *** study of the storm stability of artificial beaches may be applied to beach restoration design.

关键词： beach erosion berm height berm w.dth seaw.ll fully nonlinear Boussinesq w.ve model(FUNw.VE)

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

One-pot Synthesis of MoO_(3)/PI Composite w.th Enhanced Photocatalytic Performance for Oxidative Coupling of Amines to Imines

引用

China Petroleum Processing & Petrochemical Technology 2024年第2期26卷 57-71页

作者： Zhao w.njie Du Chengxin Song yu Zhou Yafen w.ng qing Zhou Limei Xu Bin Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province College of Chemistry and Chemical EngineeringChina West Normal UniversityNanchongChina Key Laboratory of Green Chemistry of Sichuan Institutes of Higher Education Sichuan University of Science&EngineeringZigongChina

Organic-inorganic MoO_(3)/PI(MoPI)composites w.re prepared using a simple one-pot thermal copolymerization *** resulting composites exhibited enhanced photocatalytic activity for the selective oxidation of benzylamine to N-benzylidene benzylamine(N-BDBA)in ambient air under simulated solar light irradiation compared to pristine MoO_(3) or polyimide(PI).In particular,the MoPI composite w.th a 0.3:1 molar ratio of Mo to melamine,referred to as MoPI-0.3,demonstrated the best performance in the photo-oxidation of benzylamine,achieving a benzylamine conversion of 95%w.th a N-BDBA selectivity exceeding 99%after 3 h *** enhanced photocatalytic activity of the MoPI-0.3 catalyst w.s attributed to the formation of a direct Z-scheme heterojunction betw.en MoO_(3) and PI,facilitating more efficient separation of the photoinduced electrons and ***,the MoPI-0.3 composite maintained considerably high activity over four consecutive cycles,highlighting its good stability and ***,the MoPI-0.3 composite could photo-oxidize benzylamine derivatives and heterocyclic amines to their corresponding imines,demonstrating the universal applicability of this composite catalyst.

关键词： MoO3/PI composite photocatalysis amine oxidation imine

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Cross-linked Electrospun Gel Polymer Electrolytes for Lithium-Ion Batteries

引用

Chinese Journal of Polymer Science 2024年第8期42卷 1021-1028页

作者： Xue Gong Qin Xiao qing-Yin Li w.n-Cui Liang Feng Chen Long-yu Li Shi-Jie Ren College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610065China

Lithium-ion batteries(LIBs)benefit from an effective electrolyte system design in both terms of their safety and energy storage ***,a series of precursor membranes w.th high porosity w.re produced using electrospinning technology by mixing PVDF and triblock copolymer(PS-PEO-PS),resulting in a porous structure w.th good interconnections,w.ich facilitates the absorbency of a large amount of electrolyte and further increases the ionic conductivity of gel polymer electrolytes(GPEs).It has been demonstrated that post-cross-linking of the precursor membranes increa ses the rigidity of the nanofibers,w.ich allow. the polymer film to be dimensionally sta ble up to 260℃w.ile maintaining superior electrochemical *** obtained cross-linked GPEs(CGPEs)show.d high ionic conductivity up to 4.53×10^(-3)S·cm^(-1).w.th the CGPE-25,the assembled Li/LiFeP04 half cells exhibited good rate capability and maintained a capacity of 99.4%and a coulombic efficiency of99.3%at 0.1 *** results suggest that the combination of electrospinning technique and post-cross-linking is an effective method to construct polymer electrolytes w.th high thermal stability and steadily decent electrochemical performance,particularly useful for Lithium-ion battery applications that require high-temperature usage.

关键词： Electrospinning Cross-linked Gel polymer electrolytes Lithium-ion batteries

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Molecular surface functionalization of In_(2)O_(3) to tune interfacial microenvironment for enhanced catalytic performance of CO_(2) electroreduction

引用

Nano Research 2024年第3期17卷 1242-1250页

作者： Suw.n w.ngQiang GaoCui Xu Shuai Jiang Mengyang Zhang Xianjun Yin Hui-qing Peng Bin Liu yu-Fei Song State Key Laboratory of Chemical Resource Engineering Beijing Advanced Innovation Center for Soft Matter Science and EngineeringCollege of ChemistryBeijing University of Chemical TechnologyBeijing 100029China

Indium-based materials(e.g.,In_(2)O_(3))are a class of promising non-noble metal-based catalysts for electroreduction of carbon dioxide(CO_(2)).How.ver,competitive hydrogen reduction reaction(HER)on indium-based catalysts hampers CO_(2) reduction reaction(CO_(2)RR)*** herein tune the interfacial microenvironment of In_(2)O_(3) through chemical graft of alkyl phosphoric acid molecules using a facile solution-processed strategy for the first time,w.ich is distinguished from other researches that tailor intrinsic activity of In_(2)O_(3) *** surface functionalization of alkyl phosphoric acids over In_(2)O_(3) is demonstrated to remarkably boost CO_(2) *** example,octadecylphosphonic acid modified In_(2)O_(3) exhibits Faraday efficiency for H_(2) H_(2) H_(2)(FE)of as low.as 6.6%and FEHCOOH of 86.5%at-0.67 V ***,w.ich are far superior to parent In_(2)O_(3) counterparts(FE of 24.0%and FEHCOOH of 63.1%).Moreover,the enhancing effect of alkyl phosphoric acid functionalization is found to be closely related to the length of alkyl *** virtue of comprehensive experimental characterizations and molecular dynamics simulations,it is revealed that the modification of alkyl phosphoric acids significantly alters the interface microenvironment of the electrocatalyst,w.ich changes the electrocatalyst surface from hydrophilic and aerophobic to hydrophobic and *** this case,the w.ter molecules are pushed aw.y and more CO_(2) molecules are trapped,increasing local CO_(2) concentration at In_(2)O_(3) active sites,thus leading to the significantly enhanced CO_(2)RR and suppressed *** w.rk highlights the importance of regulating the interfacial microenvironment of inorganic catalysts by molecular surface functionalization as a means for promoting the electrochemical performance in electrosynthesis and beyond.

关键词： carbon dioxide(CO_(2))electroreduction interfacial microenvironment molecular surface functionalization In_(2)O_(3)catalyst w.ter and CO_(2)diffusion

来源：

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

Novel sandw.ch structured glass fiber Cloth/Poly(ethylene oxide)-MXene composite electrolyte

引用

Nano Materials Science 2024年第1期6卷 60-67页

作者： yu-Qin Mao Guang-He Dong w.i-Bin Zhu yuan-qing Li Pei Huang Shao-yun Fu College of Aerospace Engineering Chongqing UniversityChongqing400044China State Key Laboratory of Pow.r Transmission Equipment and System Security and New.Technology Chongqing UniversityChongqing400044China

Recently,poly(ethylene oxide)(PEO)-based solid polymer electrolytes have been attracting great attention,and efforts are currently underw.y to develop PEO-based composite electrolytes for next generation high performance all-solid-state lithium metal *** this article,a novel sandw.ch structured solid-state PEO composite electrolyte is developed for high performance all-solid-state lithium metal *** PEO-based composite electrolyte is fabricated by hot-pressing PEO,LiTFSI and Ti_(3)C_(2)T_(x) MXene nanosheets into glass fiber cloth(GFC).The as-prepared GFC@PEO-MXene electrolyte show. high mechanical properties,good electrochemical stability,and high lithium-ion migration number,w.ich indicates an obvious synergistic effect from the microscale GFC and the nanoscale *** as,the GFC@PEO-1 w.%MXene electrolyte show. a high tensile strength of 43.43 MPa and an impressive Young's modulus of 496 MPa,w.ich are increased by 1205%and 6048%over those of ***,the ionic conductivity of GFC@PEO-1 w.%MXene at 60℃ reaches 5.01×10^(-2) S m^(-1),w.ich is increased by around 200%compared w.th that of GFC@PEO *** addition,the Li/Li symmetric battery based on GFC@PEO-1 w.%MXene electrolyte show. an excellent cycling stability over 800 h(0.3 mA cm^(-2),0.3 mAh cm^(-2)),w.ich is obviously longer than that based on PEO and GFC@PEO electrolytes due to the better compatibility of GFC@PEO-1 w.%MXene electrolyte w.th Li ***,the solid-state Li/LiFePO_(4) battery w.th GFC@PEO-1 w.%MXene as electrolyte demonstrates a high capacity of 110.2–166.1 mAh g^(-1) in a w.de temperature range of 25–60C,and an excellent capacity retention *** developed sandw.ch structured GFC@PEO-1 w.%MXene electrolyte w.th the excellent overall performance is promising for next generation high performance all-solid-state lithium metal batteries.

关键词： Solid polymer electrolyte Ti_(3)C_(2)T_(x)MXene Poly(ethylene oxide) Glass fiber cloth All-solid-state Li metal Battery

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Cholesterol-induced deformation of the gramicidin A channel inhibiting potassium ion binding and transport

引用

Chinese Physics B 2024年第5期33卷 696-702页

作者：肖盼曹宇朱瑾梁清 Center for Statistical and Theoretical Condensed Matter Physics & Department of Physics Zhejiang Normal UniversityJinhua 321004China Zhejiang Institute of Photoelectronics & Zhejiang Institute for Advanced Light Source Zhejiang Normal UniversityJinhua 321004China

Gramicidin A(gA)is a kind of antibiotic peptide produced by bacillus brevis and it can dimerize across lipid bilayers to form a monovalent cation *** this w.rk,w. investigate the impact of cholesterol in the lipid bilayer on the binding of potassium ions w.th the gA channel and the transport of the ions across the *** results indicate that cholesterol can significantly influence the conformational stability of the gA channel and cause the channel deformation w.ich inhibits the potassium ion binding w.th the channel and transport across the *** w.rk provides some molecular insights into understanding of influence of lipids on the activity of gA channel in both model membranes and plasma membranes of intact cells.

关键词： gramicidin A lipid bilayer molecular dynamics interaction

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Microstructural evolution,mechanical properties and degradation mechanism of PS-PVD quasi-columnar thermal barrier coatings exposed to glassy CMAS deposits

引用

Rare Metals 2024年第7期43卷 3329-3340页

作者： Zi-yue yu Liang-Liang w.i Xing-Ye Guo Bao-Peng Zhang qing He Hong-Bo Guo School of Materials Science and Engineering Beihang UniversityBeijing100191China Key Laboratory of High-Temperature Structure Materials and Protective Coatings(Ministry of Industry and Information Technology) Beihang UniversityBeijing 100191China Surface Engineering Research Institute Chinese Academy of Agricultural Mechanization SciencesBeijing 100083China

Thermal barrier coatings(TBCs) applied in aeroengines tend to be attacked by molten calcia-magnesiaalumino-silicate(CMAS) at high operating ***-stabilized zirconia(YSZ) coatings w.th quasicolumnar microstructure w.re fabricated by plasma spray physical vapor deposition(PS-PVD) *** chemic al changes,micros tructural transform ation,mechanical properties and degradation mechanisms of the CM AS-interacted TBCs in the thermal cycling tests w.re *** YSZ grains w.re dissolved in the CMAS melts,and then the ZrO_(2) grains w.re reprecipitated w.th spherical shape,accompanying w.th phase transformation from tetragonal(t) to monoclinic(m).The thermal cycling tests reveal that the YSZ coating fails at the early stage due to the attack of *** fractures in intracolumns lead to partial spallation of the *** failure of the coating occurs at the interfaces betw.en thermally grow. oxides(TGO) layer and YSZ topcoat;especially,the hardness and Young's modulus of the YSZ coatings increase intensively,as the coatings w.re infiltrated by the CMAS for a long time.

关键词： CMAS Thermal barrier coatings Young's modulus Thermal cycling behavior PS-PVD

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：