摘要：The integration and accommodation of the wind and solar energy pose great challenges on today’s power system operation due to the intermittent nature and volatility of the wind and solar *** efficient large-scale electrical energy storage is one of the most effective and economical solutions to those *** the comprehensive review of the existing storage technologies,this paper proposes an overall design scheme for the Non-supplementary Fired Compressed Air Energy Storage(NFCAES)system,including system design,modeling and efficiency assessment,as well as protection and ***,the design principles of the multistage regenerative,*** recovery system which is used to fully recycle and utilize the waste heat from compression are provided,so as the overall system efficiency evaluation *** paper theoretically ascertains the storage decoupling rules in the potential and internal energy of molecular compressed air and reveals the conversion mechanism of gas,heat,power,electricity and other forms of *** this basis,a 500-k W physical simulation system of CAES system(TICC-500,Tsinghua-IPCCAS-CEPRI-CAES)is built,which passed a system-wide 420-k W load power generation test with less pollution and zero carbon ***,the multi-form energy conversion of multi-stage regenerative CAES and storage efficiency is verified,especially its incomparable superiority in solving the uncertainty problem in wind and solar power ***,the propaganda and application scenario of the CAES system in China is introduced.

摘要：Efficient,low-cost,and stable electrocatalysts for water splitting are highly ***,three-dimensional(3D)Ni_(2)P nanosheet arrays were fabricated and simultaneously modulated by heterostructure engineering and Mn doping(Mn-doped Ni_(2)O_(3)/Ni_(2)P and Mn-doped Ni_(x)S_(y)/Ni_(2)P)via a facile hydrothermal reaction and subsequent phosphorization and *** to the Mn doping,synergistic effect in the heterostructures,and abundantly exposed active sites from the 3D-nanosheet arrays,Mn-doped Ni_(2)O_(3)/Ni_(2)P and Mn-doped Ni_(x)S_(y)/Ni_(2)P exhibit excellent properties for the hydrogen evolution reaction(HER)and oxygen evolution reaction(OER),*** former achieves an excellent current density of-10 mA cm^(-2) at a low overpotential of 104 mV for HER,while the latter attains 100 mA cm^(-2) for OER at an ultralow overpotential of 290 mV and exhibits superior stability at 50 mA cm^(-2) for 160 ***,the Mndoped Ni_(2)O_(3)/Ni_(2)P//Mn-doped Ni_(x)S_(y)/Ni_(2)P couple show high overall-water-splitting activity with a cell voltage of 1.65 V at 10 mA cm^(-2) and outstanding durability at 50 mA cm^(-2) for 120 h in an alkaline *** work presents an effective strategy to design and synthesize low-cost and highly active non-noble metal electrocatalysts for overall water splitting through the simultaneous application of heterostructure engineering,foreign-metal-atom doping,and a 3Dnanoarray *** strategy brings a paradigm shift toward the mass production of low-cost non-noble metal electrocatalysts for renewable energy devices.

摘要：多模态成像引导的光动力和光热治疗在癌症治疗上具有明显的优势.同时具有近红外光(NIR)吸收、高活性氧(ROS)产率和高光热转换效率的物质是非常理想的光疗试剂.本文设计合成了一种具有“受体-供体-受体”(A-D-A)结构的分子IDCIC.随后通过在IDCIC表面包裹DSPE-PEG2000-NH2得到了水溶性纳米颗粒IDCIC *** NPs具有近红外吸收,峰值位于760 nm;同时还具有近红外二区荧光发射,峰值在1000 nm左右,荧光量子产率为1.2%,使得IDCIC NPs具有良好的光声成像和NIR-Ⅱ荧光成像能力.此外,IDCIC NPs在808 nm激光器照射下可以同时产生单线态氧(量子产率为9.1%)、羟基自由基(·OH)和热量(光热转换效率为78.9%).基于以上这些特性,IDCIC NPs可以用于多模态成像引导的光动力/光热联合癌症治疗.

摘要：As an important energy carrier in terms of carbon neutrality,green hydrogen produced by water electrolysis using renewable electricity has attracted worldwide *** polymer electrolyte water electrolyzer(PEWE)has the potential to be a mainstay in the green hydrogen market in the future because of its superior ***,the development of PEWE is constrained by the slow progress of the membrane electrode assembly(MEA),which is an essential component of PEWE and largely determines the cost and performance of the ***,the MEA must be optimized from the aspects of reducing cost and improving performance to promote the development of *** this review,we first discuss the recent progress of the materials and design strategies of MEA,including the cost,activity,and stability of catalysts,distribution and thickness of ionomers,and ion transport efficiency of ion exchange membranes(IEMs).Then,the effects of all components and interlayer interfaces on the ions,electrons,and mass transfer in MEA and,consequently,the performance of PEWE are ***,we propose perspectives on developing MEA by optimizing the catalyst activity and stability of IEM,interface contact between adjacent components,and evaluation methods of performance.

摘要：In this work,the nickel-based powder metallurgy superalloy FGH95 was selected as experimental material,and the experimental parameters in multiple overlap laser shock processing(LSP)treatment were selected based on orthogonal experimental *** experimental data of residual stress and microhardness were measured in the same *** residual stress and microhardness laws were investigated and *** neural network(ANN)with four layers(4-N-(N-1)-2)was applied to predict the residual stress and microhardness of FGH95 subjected to multiple overlap *** experimental data were divided as training-testing sets in *** energy,overlap rate,shocked times and depth were set as inputs,while residual stress and microhardness were set as *** prediction performances with different network configuration of developed ANN models were compared and *** developed ANN model with network configuration of 4-7-6-2 showed the best predict *** predicted values showed a good agreement with the experimental *** addition,the correlation coefficients among all the parameters and the effect of LSP parameters on materials response were *** can be concluded that ANN is a useful method to predict residual stress and microhardness of material subjected to LSP when with limited experimental data.

摘要：hotodynamic therapy(PDT)has been drawing more and more attention in the antibacterial *** photosensitizers(PSs)tend to aggregate in aqueous media,which reduces the generation of reactive oxygen species(ROS)and seriously affects the photodynamic *** efforts have been made to prevent aggregation of traditional *** contrast,aggregation-induced emission PSs(AIE-PSs)take advantage of aggregation to boost ROS generation and fluorescence ***,the efficacies of the reported antibacterial AIE-PSs are ***,we report a new class of highly effective antibacterial AIE-PSs based on nitrobenzoic acid ***,a negatively charged AIE-PS,can not only selectively kill spherical bacteria(Staphylococcus aureus(***))rather than rod-shaped bacteria(Escherichia coli(***)),but also be easily extended to several AIE-PSs(TTVBP1–3)with positive charges and broad-spectrum antibacterial *** demonstrate that TTVBP2 can kill3.0 log_(10)of *** at very low concentration(125 nmol L^(-1)),TTVBP3 can kill 4.7 log_(10)of Staphylococcus epidermidis(***)at a concentration of 1μmol L^(-1)and 3.8 log_(10)of *** at 5μmol L^(-1),thus enabling them among the most effective antibacterial AIE-PSs reported so ***,these AIE-PSs exhibit excellent wash-free imaging ability for bacteria by simple mixing with *** thus envision that TTVBA,a nitrobenzoic acid-based extendable AIE-PS,provides a new route for the design of AIE-PSs in antibacterial treatment.

摘要：The design and preparation of suitable supports are of great importance for gold catalysts to attain excellent catalytic performance for alcohol *** this work,we found that ZnO-CuO mixed oxides supported gold catalysts showed much better catalytic activity for base-free aerobic oxidation of benzyl alcohol than Au/ZnO and Au/CuO catalysts,and among them Au/Zn0.7Cu0.3O displayed the best catalytic *** addition,the Au/Zn0.7Cu0.3O catalyst could selectively catalyze the aerobic oxidation of a wide range of alcohols to produce the corresponding carbonyl compounds with high yields under mild conditions without *** characterizations indicated that the outstanding catalytic performance of Au/Zn0.7Cu0.3O was correlated with the small size of Au nanoparticles(NPs),good low-temperature reducibility,high concentration of surface oxygen species,and collaborative interaction between Au NPs and mixed oxide.

摘要：Binary cooperative complementary materials,consisting of two components with entirely opposite physiochemical properties at the nanoscale, are presented as a novel principle for the design and construct of functional materials. By summarizing recent achievement in materials science, it can be found that the cooperative interaction distance between the pair of complementary property must be comparable with the scale of related physical or chemical parameter. When the binary components are in the cooperative distance, the cooperation between these building blocks becomes dominant and endows the macroscopic materials with unique properties and advanced functionalities that cannot be achieved by either of building blocks.

摘要：*** is an important phenomenon in nature and is involvedin all areas of the chemical *** andheterogeneous catalysis are key techniques in chemical *** development of efficient,stable,and environmentallyfriendly catalytic methods is receiving much attentionbecause of the increasing global shortage of energy and seriousenvironmental damage.A number of efforts have been made inthe past for designing rationally catalysts to achieve desirablecatalytic activities,selectivities,and stabilities for specific reactions[1].The current energy crisis is affecting economies inevery region,particularly in fossil‐oil‐consuming countries,because of rapidly decreasing available stocks,therefore biomassconversion to fuels and chemicals using various approaches,including thermal,biological,and chemocatalyticprocesses,is attracting great attention worldwide[2].

摘要：摩擦发光(ML)是由机械力作用在材料上引起的发光现象。近年来,金属配合物ML材料因其独特的光学发射特性而受到广泛关注,在应力传感、防伪、结构健康监测、医疗健康、结构检测等领域有着广阔的应用前景。本文综述了近年来具有摩擦发光性质的金属配合物材料的研究进展,包括镧系金属配合物和过渡金属配合物。此外,还讨论了摩擦发光的产生机制、设计原理、光物理性质及其应用前景。本综述将为构建金属配合物摩擦发光材料以及拓展其在应力传感、结构检测等方面的应用提供启发和指导。