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Energy & Environmental Materials 2024年第6期7卷 129-139页

作者： Hui li.Gang Wang Jin Hu jun li.Jiaxu Huang Shaoli. Xu Department of Mechanical and Energy Engineering Southern University of Science and TechnologyShenzhen 518000China

The practical appli.ation of li.hium(li.metal anodes in high-capacity batteries is impeded by the formation of hazardous li.*** address this challenge,this research presents a novel methodology that combines laser ablation and heat treatment to precisely induce controlled grain growth within laser-structured grooves on copper(Cu)current ***,this approach enhances the prevalence of Cu(100)facets within the grooves,effectively lowering the overpotential for li.nucleation and promoting preferential li.*** approaches that modify the entire surface of collectors,our work focuses on selectively enhancing li.hiophili.ity within the grooves to mitigate the formation of li.dendrites and exhibit exceptional performance *** half-cell with these collectors maintains a remarkable Coulombic efficiency of 97.42%over 350 cycles at 1 mA cm^(−2).The symmetric cell can cycle stably for 1600 h at 0.5 mA cm^(−2).Furthermore,when integrated with li.ePO4 cathodes,the full-cell configuration demonstrates outstanding capacity retention of 92.39%after 400 cycles at a 1C discharge *** study introduces a novel technique for fabricating selective li.hiophili. three-dimensional(3D)Cu current collectors,thereby enhancing the performance of li.metal *** insights gained from this approach hold promise for enhancing the performance of all laser-processed 3D Cu current collectors by enabli.g precise li.hiophili. modifications within complex structures.

关键词： copper current collector heat treatment laser processing li.hium metal battery selective crystalli.e orientation

Design of weak current measurement system and research on temperature impact

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Nuclear Science and Techniques 2024年第4期35卷 46-56页

作者： Chu-Xiang Zhao San-Gang li.rong-rong Su li.Yang Ming-Zhe li. Qing-Yue Xue Shan li.o Zhi Zhou Qing-Shan Tan Xian-Guo Tuo Yi Cheng College of Nuclear Technology and Automation Engineering Chengdu University of Technology1#DongsanluErxianqiaoChengdu 610059China Appli.d Nuclear Technology in Geosciences Key Laboratory of Sichuan Province Chengdu University of Technology1#DongsanluErxianqiaoChengdu 610059China University of Science and Technology of China Hefei 230026China School of Physics and Electronic Engineering Sichuan University of Science and EngineeringZigong 643000China

A dedicated weak current measurement system was designed to measure the weak currents generated by the neutron ionization *** system incorporates a second-order low-pass filter circuit and the Kalman filtering algorithm to effectively filter out noise and minimize interference in the measurement *** conducted under normal temperature conditions has demonstrated the system's high precision ***,it was observed that temperature variations can affect the measurement *** were collected across temperatures ranging from -20 to 70℃,and a temperature correction model was establi.hed through li.ear regression fitting to address this *** feasibili.y of the temperature correction model was confirmed at temperatures of -5 and 40℃,where relative errors remained below 0.1% after applying the temperature *** research indicates that the designed measurement system exhibits excellent temperature adaptabili.y and high precision,making it particularly suitable for measuring weak currents.

关键词： Weak current measurement system Neutron ionization chamber Kalman filter algorithm Temperature correction model

Unraveli.g the role of iron on Ni-Fe alloy nanoparticles during the electrocatalytic ethanol-to-acetate process

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Nano Research 2024年第4期17卷 2328-2336页

作者： junshan li.Luming li.Xinyu Ma jun Wang jun Zhao Yu Zhang Ren He Yaoyue Yang Andreu Cabot Yongfa Zhu Institute for Advanced Study Chengdu University610106 ChengduChina State Key Laboratory of Environmental-Friendly Energy Materials Southwest University of Science and TechnologyMianyang 621010China College of Food and Biological Engineering Chengdu UniversityChengdu 610106China School of Chemistry and Environment Southwest Minzu UniversityChengdu 610041China Hebei Key Laboratory of Photoelectric Control on Surface and Interface College of ScienceHebei University of Science and TechnologyShijiazhuang 050018China Catalonia Institute for Energy Research-IREC Sant Adriàde BesòsBarcelona 08930CataloniaSpain ICREA Pg.Lluís Companys 23Barcelona 08010CataloniaSpain Department of Chemistry Tsinghua UniversityBeijing 100084China

The anodic electrooxidation of ethanol to value-added acetate is an excellent example of replacing the oxygen evolution reaction to promote the cathodic hydrogen evolution reaction and save ***,we present a colloidal strategy to produce Ni-Fe bimetalli. alloy nanoparticles(NPs)as efficient electrocatalysts for the electrooxidation of ethanol in alkali.e ***-Fe alloy NPs deli.er a current density of 100 mA·cm^(-2) in a 1.0 M KOH solution containing 1.0 M ethanol merely at 1.5 V *** hydrogen electrode(RHE),well above the performance of other electrocatalysts in a similar *** continuous 10 h testing at this external potential,this electrode is able to produce an average of 0.49 mmol·cm^(-2)·h^(-1) of acetate with an ethanol-to-acetate Faradaic efficiency of 80%.A series of spectroscopy techniques are used to probe the electrocatalytic process and analyze the ***,density functional theory(DFT)calculations demonstrate that the iron in the alloy NPs significantly enhances the electroconductivity and electron transfer,shifts the rate-li.iting step,and lowers the energy barrier during the ethanol-to-acetate reaction pathway.

关键词： electrocatalysis ethanol oxidation reaction alloy nanoparticle acetate biorefinery

Hybrid Beamforming Design and Signal Processing with Fully-Connected Architecture for mmWave Integrated Sensing and Communications

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Journal of Communications and Information Networks 2024年第2期9卷 151-161页

作者： Hongyu li.jun Gong Wenchi Cheng The 54th Research Institute of China Electronics Technology Group Corporation Shijiazhuang 050080China State Key Laboratory of Integrated Services Networks Xidian UniversityXi’an 710071China

Milli.eter-wave (mmWave) is capable of achieving gigabit/second communication capacity and centimeter-level sensing accuracy and has become one of the main frequency bands for integrated sensing and communications (ISAC) research. Hybrid beamforming techniques have attracted much attention for solving the high path loss of mmWave and further reducing the hardware cost of the system. However, the related studies based on multicarrier and fully-connected hybrid architectures are still li.ited. For this reason,this paper investigates the orthogonal frequency division multiplexing (OFDM) based mmWave fully-connected hybrid architecture ISAC system to form a stable communication beam and dynamically varying sensing beam. In order to reali.e the aforementioned multifunctional beams, the hybrid beamformer design problem based on weighted error minimization of multicarrier is proposed and solved efficiently using the penalty dual decomposition (PDD) algorithm. Meanwhile, based on the echo model, the multicarrier multiple signal classification (MUSIC) algorithm for target angle of arrival estimation and the two-dimensional discrete Fourier transform(2D-DFT)algorithm for distance and velocity estimation are proposed, respectively. Numerical simulation results show that by adjusting the weighting factor,a flexible trade-off can be formed between the communication spectrum efficiency and the sensing accuracy error.

关键词： integrated sensing and communications hybrid beamforming fully-connected architecture milli.eter-wave

Preface:special topic on rechargeable battery technology

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Science China Chemistry 2024年第1期67卷 1-3页

作者： Yu-Guo Guo Qiang Zhang jun Chen li.jun Wan CAS Key Laboratory of Molecular Nanostructure and Nanotechnology CAS Research/Education Center for Excellence in Molecular SciencesBeijing National Laboratory for Molecular Sciences(BNLMS)Institute of ChemistryChinese Academy of Sciences(CAS)Beijing 100190China University of Chinese Academy of Sciences Beijing 100049China Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China Frontiers Science Center for New Organic Matter Renewable Energy Conversion and Storage Center(RECAST)Haihe Laboratory of Sustainable Chemical TransformationsKey Laboratory of Advanced Energy Materials Chemistry(Ministry of Education)College of ChemistryNankai UniversityTianjin 300071China

Rechargeable batteries play a major role in the transition from fossil energy to renewable energy and are considered the key-enabli.g decarbonization technology for several industries,including electronics,transportat... 详细信息

关键词： battery artificial technology

Cli.ical and molecular characterization of 10 Chinese children with congenital adrenal hyperplasia due to 11beta‑hydroxylase deficiency

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World Journal of Pediatrics 2024年第4期20卷 422-433页

作者： Wen‑li.Lu Xiao‑Yu Ma Jiao Zhang jun‑Qi Wang Ting‑Ting Zhang Lei Ye Yuan Xiao Zhi‑Ya Dong Wei Wang Shou‑Yue Sun Chuan‑Yin li.rong‑Gui Hu Guang Ning li.Dan Zhang Department of Pediatrics Ruijin HospitalShanghai Jiao Tong University School of MedicineNo.197Ruijin 2nd RdHuangpu DistrictShanghai 200025China Department of Pediatric Genetic and Metaboli. Endocrinology West China Second University HospitalSichuan UniversityNo.20Section 3Renmin South RoadSichuan 610041China Department of Endocrine and Metaboli. Diseases Shanghai Clinical Center for Endocrine and Metabolic DiseasesRuijin HospitalShanghai Jiao Tong University School of MedicineShanghai 200025China Cancer Center School of MedicineShanghai Tenth People’s HospitalTongji UniversityYanchang Zhong Lu 301St RdJing’an DistrictShanghai 200031China

Background The cli.ical manifestations of nonclassical 11beta-hydroxylase deficiency are very similar to those of nonclassical 21-hydroxylase *** this study,we investigated the relationship between the cli.ical and molecular features of congenital adrenal hyperplasia caused by 11beta-hydroxylase deficiency and reviewed the related li.erature,which are expected to provide assistance for the cli.ical diagnosis and analysis of congenital adrenal *** Cli.ical data for 10 Chinese patients diagnosed with congenital adrenal hyperplasia in our hospital from 2018 to 2022 were retrospectively *** examined the effects of gene mutations on protease activity and constructed threedimensional structure prediction models of *** We describe 10 patients with 11beta-hydroxylase gene mutations(n=5,46,XY;n=5,46,XX),with 10 novel mutations were *** patients received treatment at an early stage,with an average age of 2.08±1.66 years,whereas male patients received treatment significantly later,at an average age of 9.77±3.62 *** most common CYP11B1 pathogenic variant in the Chinese population was found to be c.1360C>*** mutations lead to spatial conformational changes that affect protein *** Our study found that there was no significant correlation between each specific mutation and the severity of cli.ical *** patients with the same gene pathogenic variant may have mild or severe cli.ical *** correlation between genotype and phenotype needs further ***-dimensional protein simulations may provide additional support for the physiopathological mechanism of genetic mutations.

关键词： 11β-hydroxylase deficiency CYP11B1 Enzymatic activity Phenotype-genotype correlation Threedimensional protein simulations

Preparation of entangledW states based on the cavity QED system

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Chinese Physics B 2024年第9期33卷 290-296页

作者： Ke li.jun-Long Zhao Department of Physics Shanghai Second Polytechnic UniversityShanghai 201209China Quantum Information Research Center Shangrao Normal UniversityShangrao 334001China

We present a qubit-loss-free(QLF)fusion scheme for generating large-scale atom W states in cavity quantum electrodynamics(QED)*** to the most current fusion schemes which are conditioned on the case where one particle can be extracted from each initial W state to the fusion process,our scheme will access one or two particles from each W *** on the atom–cavity-field detuned interaction,three jWin+m+t states can be generated from the jWin,jWim,and jWit states with the help of two auxili.ry atoms,and three jWin+m+t+q states can be generated from jWin,jWim,jWit,and a jWiq state with the help of three auxili.ry *** the numerical simulations of the resource cost of fusing three small-size W states based on the previous schemes,our fusion scheme seems to be more *** QLF fusion scheme can be generali.ed to the case of fusing k different or identical particle W ***,with no qubit loss,it greatly reduces the number of fusion steps and prepares W states with larger particle numbers.

关键词： W state detuned interaction state fusion cavity quantum electrodynamics

Pion-photon and kaon-photon transition distribution ampli.udes in the Nambu–Jona-Lasinio model

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Chinese Physics C 2024年第8期48卷 94-103页

作者： Jin-li.Zhang jun Wu Department of Mathematics and Physics Nanjing Institute of TechnologyNanjing 211167China National Laboratory of Soli. State Microstructures Department of PhysicsNanjing UniversityNanjing 210093China

The Nambu–Jona-Lasinio model is utili.ed to investigate the pion-and kaon-photon leading-twist transition distribution ampli.udes using proper time ***,the properties of the vector and axial vector pion-photon transition distribution ampli.udes are examined,and the results meet the desired *** study involves sum rule and polynomiali.y *** vector and axial vector pion-photon transition form factors that are present in theπ^(+)→γe^(+)νprocess are the first Melli. moments of the pion-photon transition distribution *** vector transition form factor originates from the internal structure of hadrons,the axial current can be coupled to a pion,this pion is virtual,and its contribution will be present independently of the external *** kaon transition form factors are *** vector form factor's value at zero momentum transfer is determined by the axial anomaly,while this is not the case for the axial *** vector and axial form factors,as well as the neutral pion vector form factor F_(πγγ)(t),are *** to our findings,the pion axial transition form factor is harder than the vector transition form factor and harder than the electromagnetic form *** also discuss the li.k betweenπ−γandγ−πtransitions distribution ampli.udes.

关键词： transition form factors NJL model transition distribution ampli.udes

Progresses on two-phase modeli.g of proton exchange membrane water electrolyzer

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Energy Reviews 2024年第3期3卷 30-57页

作者： Boshi Xu Tao Ouyang Yang Wang Yang Yang jun li.li.ngli.ng Jiang Chaozhong Qin Dingding Ye rong Chen Xun Zhu Qiang li.o Key Laboratory of Low-grade Energy Utili.ation Technologies and Systems Ministry of EducationChongqing UniversityChongqing400030China Institute of Engineering Thermophysics School of Energy and Powering EngineeringChongqing UniversityChongqing400030China Department of Chemical and Petroleum Engineering The University of CalgaryCalgaryAlbertaCanada State Key Laboratory of Coal Mine Disaster Dynamics and Control Chongqing UniversityChongqing400044China

The Proton Exchange Membrane(PEM)water electrolyzer is considered one of the promising energy storing means for harnessing variable renewable energy sources to produce *** the internal fluid dynamics,which are often challenging to directly observe experimentally,has prompted the use of numerical models to investigate two-phase flow within PEM water *** this study,we provide a comprehensive review of prior research focusing on two-phase modeli.g of PEM electrolyzers,encompassing both components at mesoscopic scales and the full electrolyzer at the macroscopic *** delve into the specifics of various modeli.g approaches for two-phase flow at different scales and summarize and discuss the current state of the art in the ***,two-phase models for the full electrolyzer predominantly employ a macroscopic homogeneous ***,mesoscopic and microscopic models capable of tracking phase interfaces are li.ited to *** persist in integrating various modeli.g scales into a comprehensive electrolyzer model,particularly in coupli.g two-phase flow between the channels and porous *** efforts should focus on developing multi-scale models and simulating two-phase flow under fluctuating input ***,given the structural similarities between PEM water electrolyzers and PEM fuel cells,we compare and discuss differences in two-phase modeli.g between the two *** work offers the insights for researchers in the field of modeli.g of PEM water electrolyzers and even fuel cells.

关键词： Proton exchange membrane(PEM)water electrolyzer Two-phase model Multiscale modeli.g Water management Numerical simulation

Engineering phonon thermal transport in few-layer PdSe_(2)

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Frontiers of physics 2024年第3期19卷 135-141页

作者： Meili. li.Huanhuan Sun jun Zhou Yunshan Zhao Phonon Engineering Research Center of Jiangsu Province Center for Quantum Transport and Thermal Energy ScienceInstitute of Physics Frontiers and Interdisciplinary SciencesSchool of Physics and TechnologyNanjing Normal UniversityNanjing 210023China

Engineering phonon transport in low-dimensional materials has great significance not only for fundamental research,but also for thermal management appli.ations of electric ***,due to the difficulties of micro and nano processing and characterization techniques,the work on tuning phonon transport at nanoscale are *** this work,by introducing Ar+plasma,we probed the phonon transport in two-dimensional(2D)layered semiconductor PdSe_(2)under different defect *** using thermal bridge method,the thermal conductivity was measured to decrease by 50%after a certain Ar+irradiation,which impli.d a possible phase ***,Raman characterizations were performed to show that the Raman sensitive peaks of PdSe_(2)was red-shifted and finally became disappeared with the increase of defect concentration.“Defect engineering”proves be a practical strategy in tuning the phonon thermal transport in low-dimensional materials,thus providing guidance for potential appli.ation in designing thermoelectric devices with various emerging materials.

关键词： phonon transport PdSe_(2) defects thermal bridge method